EP0598083A1 - Radiant burner bor boilers. - Google Patents

Radiant burner bor boilers.

Info

Publication number
EP0598083A1
EP0598083A1 EP93912581A EP93912581A EP0598083A1 EP 0598083 A1 EP0598083 A1 EP 0598083A1 EP 93912581 A EP93912581 A EP 93912581A EP 93912581 A EP93912581 A EP 93912581A EP 0598083 A1 EP0598083 A1 EP 0598083A1
Authority
EP
European Patent Office
Prior art keywords
burner
gas
support plate
gas distributor
burner according
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
EP93912581A
Other languages
German (de)
French (fr)
Other versions
EP0598083B1 (en
Inventor
Hans Viessmann
Peter Hofbauer
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.)
Viessmann Werke GmbH and Co KG
Original Assignee
Viessmann Werke 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
Priority claimed from DE19924219443 external-priority patent/DE4219443A1/en
Priority claimed from DE9304247U external-priority patent/DE9304247U1/en
Application filed by Viessmann Werke GmbH and Co KG filed Critical Viessmann Werke GmbH and Co KG
Publication of EP0598083A1 publication Critical patent/EP0598083A1/en
Application granted granted Critical
Publication of EP0598083B1 publication Critical patent/EP0598083B1/en
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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape

Definitions

  • the invention relates to a radiant burner for Walkerkes ⁇ sel, consisting of a support plate with a gas supply line leading to a gas inflow opening in the support plate and with a curved burner surface arranged on the other side of the support plate made of wire mesh.
  • Radiation burners of this type are known, for example, from US Pat. No. 3,360,028.
  • the curved burner surface made of wire mesh has an elongated, approximately semi-cylindrical shape, as a result of which the circular gas inflow opening in relation to the burner surface inevitably becomes very small and this results in poor gas distribution, on which even a small slotted diaphragm behind the gas inflow opening does not make any significant difference changes.
  • such a burner is poorly suited for today's compact spatial shapes of combustion chambers or boilers, ie one would have to arrange several such semi-cylindrical burners in parallel next to one another in order to be able to approximately achieve a largely uniform radiation exposure of the combustion chamber walls involved . The same applies approximately to a burner according to US Pat. No. 3,291,187.
  • a radiation burner according to FR-A-1 361 509 which is practically spherical and also has a small gas inflow opening in relation to the size of the burner surface, also shows poor gas distribution.
  • the spherical shape results in considerable reflections on the burner connection side.
  • the object of the invention is to improve it in such a way that the largest possible gas inflow opening is available with respect to the size of the burner surface, the shape of the burner surface is as stable as possible in terms of its shape, and between the inflow opening and the burner surface a gas distribution as uniform as possible over the entire burner surface should be achievable.
  • a steel burner of the generic type according to the invention in that the burner surface is in the form of a hemisphere and is concentric with this and with a distance that is substantially smaller with respect to the hemispherical diameter of the burner surface and at least one also hemispherical and also am Support plate is attached gas distributor made of perforated sheet metal, and that the diameter of the gas inflow opening corresponds essentially to the diameter of the hemispherical gas distributor.
  • FIG. 1 shows in section a special embodiment of the burner as an integral unit with a boiler lock
  • Fig. 4 also in section the burner for atmospheric operation
  • Fig. 5 is a plan view of the burner according to Fig. 4 and 6 shows in section the arrangement of the burner in the combustion chamber of a boiler.
  • the radiant burner consists basically and in a known manner of a support plate 1 with a gas supply line 3 leading to a gas inflow opening 2 in the support plate 1 and with a curved burner surface 4 made of wire mesh arranged on the other side of the support plate 1.
  • the burner surface 4 is designed in the form of a hemisphere and concentrically below it and with a distance A which is considerably smaller with respect to the hemispherical diameter D of the burner surface 4, at least one gas distributor which is also hemispherical and also fastened to the support plate 1 5 is arranged from perforated sheet metal, and that the diameter D ⁇ of the gas inflow opening 6 essentially corresponds to the diameter D2 of the hemispherical gas distributor 5 (see FIG. 4).
  • the support plate 1 is provided with annular step embossments 7, to which the burner surface 4 and the at least one gas distributor 5 are connected with their peripheral edges 8.
  • the peripheral edge 8 of the burner surface 4 (see FIGS. 1, 2) is fastened to the supporting plate 1 simply by folding the peripheral edge of the supporting plate.
  • the support plate 1 is in relation to the gas supply side GS in the form of a formed on the burner axis 9 convexly curved gas guide funnel 10, which also forms a step embossing 7 at the outlet, which centers the inner gas distributor 5 '.
  • this gas distributor 5 ' has a small edge 7' that is piled up and serves as a centering for the second gas distributor 5 (see also FIG. 3).
  • FIG. 3 A special embodiment with regard to the fastening of the gas distributors 5, 5 'is illustrated in FIG. 3.
  • the outer gas distributor 5 is attached to the support plate, which is relatively extends close to the actual burner surface 4 formed by the wire mesh and is therefore also exposed to relatively high and changing heat loads which can lead to the fastening being torn.
  • Such cracks do not render the burner inoperable, but the gas distribution 5, 5 'required and as uniform as possible gas distribution for burning Such cracks or "leaky" locations interfere to a certain extent.
  • the burner according to FIG. 3 is designed such that when two gas distributors 5, 5 'are arranged, the width B of the peripheral edge 8 of the inner gas distributor 5' is essentially the radial distance A ⁇ of both gas distributors 5, 5 'plus the Width B ⁇ of the peripheral edge 8 'of the outer gas distributor 5 is fastened to that of the inner one, the peripheral edge 8' being fastened to that of the inner gas distributor 5 'near the attachment area AB of the inner gas distributor 5' on the supporting plate 1.
  • the outer gas distributor 5 is no longer in direct connection with the support plate 1, but is held by the peripheral edge of the inner gas distributor 5 ', which in turn is attached to the support plate 1 as far as possible from the burner surface.
  • the freedom of movement of the peripheral edge of the outer or near the burner surface of the distributor 5 is increased to a sufficient extent, and it is no longer possible for the outer gas distributor 5 to be torn off at the peripheral edge.
  • an additional carrier ring were arranged on the carrier, which would only be attached to the carrier on the inner circumference and on which the peripheral edges of the gas distributors would be fastened.
  • a further insulation ring 20 is arranged under the support plate 1 in the region of its outer circumference between the latter and the heat insulation ring 15, this lying on the inside against the outer step embossment 7 of the support plate 1, and finally this is Support plate * 1 with its outer peripheral edge fixed by an externally placed tensioning and insulation ring 17 on the heat insulation ring 15.
  • This training also contributes directly to the heat relief in this area, as gas can no longer escape and burn there.
  • Such a ring 17 could, moreover, be easily fitted onto the atmospheric burner according to FIG. 4, which of course is to be arranged in the horizontal position, as shown, in the lower region of a boiler burner shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Ceramic Products (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

PCT No. PCT/DE93/00506 Sec. 371 Date Feb. 7, 1994 Sec. 102(e) Date Feb. 7, 1994 PCT Filed Jun. 11, 1993 PCT Pub. No. WO93/25846 PCT Pub. Date Dec. 23, 1993.The invention relates to a radiant burner for boilers, consisting of a sheet metal support (1), with a gas feed line (3) leading to a gas inlet port (2) in the sheet metal support (1) and a curved burner surface (4) of wire cloth arranged at an opposite side of the sheet metal support. According to the invention, the burner surface (4) is of hemispherical shape and at least one similarly hemispherical gas distributor (5) of perforated sheet metal is arranged concentrically under the burner surface and is spaced therefrom at a distance (A) which is considerably smaller than the diameter (D) of the hemisphere of the burner surface (4) and is also affixed to the sheet metal support (1). The diameter (D1) of the gas inlet port (6) corresponds substantially to the diameter (D2) of the hemispherical gas distributor (5). Such a construction fulfills the requirements of a large gas inlet port, stability of the burner surface and good gas distribution over the burner surface.

Description

Strahlungsbrenner für Heizkessel Radiant burner for boilers
Die Erfindung betrifft einen Strahlungsbrenner für Heizkes¬ sel, bestehend aus einem Tragblech mit zu einer Gaseinström¬ öffnung im Tragblech führenden Gaszufuhrleitung und mit einer auf der anderen Seite des Tragbleches angeordneten gewölbten Brennerfläche aus Drhatgewebe.The invention relates to a radiant burner for Heizkes¬ sel, consisting of a support plate with a gas supply line leading to a gas inflow opening in the support plate and with a curved burner surface arranged on the other side of the support plate made of wire mesh.
Derartige Strahlungsbrenner sind bspw. nach der US-A- 3 360 028 bekannt. Die gewölbte Brennerfläche aus Drahtgewebe hat hierbei eine langgestreckte, etwa halbzylindrische Form, wodurch die kreisförmig ausgebildete Gaszuströmöffnung in be¬ zug auf die Brennerfläche zwangsläufig sehr klein wird und sich dadurch eine schlechte Gasverteilung ergibt, an der auch eine kleine geschlitzte Blende hinter der Gaszuströmöffnung nichts wesentliches ändert. Außerdem ist ein solcher Brenner schlecht für die heutigen kompakten Raumformen von Brennkam¬ mern bzw. Heizkesseln geeignet, d.h., man müßte mehrere sol¬ cher halbzylindrischen Brenner parallel nebeneinander anord¬ nen, um eine weitgehend gleichmäßige Strahlungsbeaufschlagung der beteiligten Brennkammerwände angenähert erreichen zu kön¬ nen. Gleiches gilt in etwa auch für einen Brenner nach der US-A-3 291 187.Radiation burners of this type are known, for example, from US Pat. No. 3,360,028. The curved burner surface made of wire mesh has an elongated, approximately semi-cylindrical shape, as a result of which the circular gas inflow opening in relation to the burner surface inevitably becomes very small and this results in poor gas distribution, on which even a small slotted diaphragm behind the gas inflow opening does not make any significant difference changes. In addition, such a burner is poorly suited for today's compact spatial shapes of combustion chambers or boilers, ie one would have to arrange several such semi-cylindrical burners in parallel next to one another in order to be able to approximately achieve a largely uniform radiation exposure of the combustion chamber walls involved . The same applies approximately to a burner according to US Pat. No. 3,291,187.
Eine ebenfalls schlechte Gasverteilung zeigt auch ein Strah¬ lungsbrenner nach der FR-A-1 361 509, der praktisch Kugelform und in bezug auf die Größe der Brennerfläche eine ebenfalls kleine GasZuströmöffnung hat. Außerdem ergeben sich durch die Kugelform beachtliche Rückstrahlungsbelastungen zur Brenner¬ anschlußseite hin.A radiation burner according to FR-A-1 361 509, which is practically spherical and also has a small gas inflow opening in relation to the size of the burner surface, also shows poor gas distribution. In addition, the spherical shape results in considerable reflections on the burner connection side.
Ausgehend von einem Strahlungsbrenner der gattungsgemäßen Art liegt der Erfindung die Aufgabe zugrunde, diesen dahingehend zu verbessern, daß in bezug auf die Größe der Brennerfläche eine möglichst große Gaseinströmöffnung vorhanden, die Bren¬ nerfläche von ihrer Formgebung her möglichst stabil und zwi¬ schen Zuströmöffnung und Brennerfläche eine möglichst gleich¬ mäßige Gasverteilung auf die gesamte Brennerfläche erreichbar sein soll. Diese Aufgabe ist mit einem Stahlungsbrenner der gattungsge¬ mäßen Art nach der Erfindung dadurch gelöst, daß die Brenner¬ fläche in Form einer Halbkugel ausgebildet und unter dieser konzentrisch und mit in bezug auf den Halbkugeldurchmesser der Brennerfläche wesentlich kleineren Abstand mindestens ein ebenfalls halbkugelförmiger und ebenfalls am Tragblech befe¬ stigter Gasverteiler aus gelochtem Blech angeordnet ist, und daß der Durchmesser der Gaseinströmöffnung im wesentlichen dem Durchmesser des halbkugelförmigen Gasverteilers ent¬ spricht.Starting from a radiant burner of the generic type, the object of the invention is to improve it in such a way that the largest possible gas inflow opening is available with respect to the size of the burner surface, the shape of the burner surface is as stable as possible in terms of its shape, and between the inflow opening and the burner surface a gas distribution as uniform as possible over the entire burner surface should be achievable. This object is achieved with a steel burner of the generic type according to the invention in that the burner surface is in the form of a hemisphere and is concentric with this and with a distance that is substantially smaller with respect to the hemispherical diameter of the burner surface and at least one also hemispherical and also am Support plate is attached gas distributor made of perforated sheet metal, and that the diameter of the gas inflow opening corresponds essentially to the diameter of the hemispherical gas distributor.
Mit dieser erfindungsgemäßen Ausbildung sind alle gestellten Forderungen nach Kompaktheit, Stabilität und optimaler Gas¬ verteilung erfüllt.With this design according to the invention, all demands for compactness, stability and optimal gas distribution are met.
Weitere Ausgestaltungen ergeben sich nach den Unteransprü¬ chen, deren Vorteile im Rahmen der nachfolgenden Beschreibung von Ausführungsbeispielen mit erläutert werden.Further refinements result from the subclaims, the advantages of which are also explained in the following description of exemplary embodiments.
Es zeigt schematischIt shows schematically
Fig. 1 im Schnitt eine besondere Ausführungsform des Bren¬ ners als integrale Einheit mit einem Heizkesselver¬ schluß;1 shows in section a special embodiment of the burner as an integral unit with a boiler lock;
Fig. 2 im Schnitt den "nackten" Brenner mit zwei Gasvertei¬ lern und dem Tragblech;2 shows in section the "naked" burner with two gas distributors and the support plate;
Fig. 3 im Schnitt eine besondere Ausführungsform des Bren¬ ners;3 shows in section a special embodiment of the burner;
Fig. 4 ebenfalls im Schnitt den Brenner für atmosphärischen Betrieb;Fig. 4 also in section the burner for atmospheric operation;
Fig. 5 eine Draufsicht auf den Brennernach Fig. 4 und Fig. 6 im Schnitt die Anordnung des Brenners in der Brenn¬ kammer eines Heizkessels.Fig. 5 is a plan view of the burner according to Fig. 4 and 6 shows in section the arrangement of the burner in the combustion chamber of a boiler.
Der Strahlungsbrenner besteht grundsätzlich und in bekannter Weise aus einem Tragblech 1 mit zu einer Gaseinströmöffnung 2 im Tragblech 1 führenden Gaszufuhrleitung 3 und mit einer auf der anderen Seite des Tragbleches 1 angeordneten gewölbten Brennerfläche 4 aus Drahtgewebe.The radiant burner consists basically and in a known manner of a support plate 1 with a gas supply line 3 leading to a gas inflow opening 2 in the support plate 1 and with a curved burner surface 4 made of wire mesh arranged on the other side of the support plate 1.
Für einen solchen Brenner ist nun aber wesentlich, daß die Brennerfläche 4 in Form einer Halbkugel ausgebildet und unter dieser konzentrisch und mit in bezug auf den Halbkugeldurch¬ messer D der Brennerfläche 4 wesentlich kleineren Abstand A mindestens ein ebenfalls halbkugelförmiger und ebenfalls am Tragblech 1 befestigter Gasverteiler 5 aus gelochtem Blech angeordnet ist, und daß der Durchmesser D-^ der Gaseinström¬ öffnung 6 im wesentlichen dem Durchmesser D2 des halbkugel¬ förmigen Gasverteilers 5 entspricht (siehe ?ig.4).For such a burner, however, it is essential that the burner surface 4 is designed in the form of a hemisphere and concentrically below it and with a distance A which is considerably smaller with respect to the hemispherical diameter D of the burner surface 4, at least one gas distributor which is also hemispherical and also fastened to the support plate 1 5 is arranged from perforated sheet metal, and that the diameter D ^ of the gas inflow opening 6 essentially corresponds to the diameter D2 of the hemispherical gas distributor 5 (see FIG. 4).
An dieser Ausbildung ändert sich grundsätzlich nichts, d.h., egal ob nun der Brenner mit Gebläse betrieben wird oder at¬ mosphärisch, d.h., etwas zu ändern ist nur die Art der GasZu¬ führung, wie sie bspw. für einen atmosphärischen Brenner in Fig. 4 dargestellt ist, der in diesem Falle nur einen Gasver¬ teiler 5 aufweist und an dem die Größe der Gaseinströmöffnung besonders deutlich wird.Basically nothing changes in this configuration, ie, regardless of whether the burner is operated with a blower or atmospheric, ie, only the type of gas supply that needs to be changed, as is the case, for example, for an atmospheric burner in FIG. 4 is shown, which in this case has only one gas distributor 5 and on which the size of the gas inflow opening becomes particularly clear.
Zwecks vorteilhafter Anbringbarkeit der halbkugelförmigen Brennerfläche 4 und der Gasverteiler 5, 5' ist das Tragblech 1 mit ringförmigen Stufenprägungen 7 versehen, an denen die Brennerfläche 4 und der mindestens eine Gasverteiler 5 mi ihren Umfangsrändern 8 angeschlossen sind. Der Umfangsrand 8 der Brennerfläche 4 (siehe Fig. 1, 2) ist dabei einfach durch Umfalzen des Tragblechumfangsrandes am Tragblech 1 befestigt.For the purpose of advantageously attaching the hemispherical burner surface 4 and the gas distributor 5, 5 ', the support plate 1 is provided with annular step embossments 7, to which the burner surface 4 and the at least one gas distributor 5 are connected with their peripheral edges 8. The peripheral edge 8 of the burner surface 4 (see FIGS. 1, 2) is fastened to the supporting plate 1 simply by folding the peripheral edge of the supporting plate.
Zwecks optimaler Gaseinleitung bei Gebläsebetrieb ist das Tragblech 1 zur Gaszufuhrseite GS hin in Form eines in bezug auf die Brennerachse 9 konvex gewölbten Gasführungstrichters 10 ausgebildet, der am Auslauf ebenfalls eine Stufenprägung 7 bildet, die den inneren Gasverteiler 5' zentriert. Beim Aus¬ führungsbeispiel nach Fig. 1, 2 hat dieser Gasverteiler 5' einen aufgebürdeten kleinen Rand 7' , der als Zentrierung für den zweiten Gasverteiler 5 dient(siehe auch Fig.3).For optimal gas introduction during blower operation, the support plate 1 is in relation to the gas supply side GS in the form of a formed on the burner axis 9 convexly curved gas guide funnel 10, which also forms a step embossing 7 at the outlet, which centers the inner gas distributor 5 '. In the embodiment according to FIGS. 1, 2, this gas distributor 5 'has a small edge 7' that is piled up and serves as a centering for the second gas distributor 5 (see also FIG. 3).
Ebenfalls für mit Gebläse betriebene Brenner hat es sich hin¬ sichtlich der Gasverteilung als vorteilhaft erwiesen, im In¬ nenraum 11 der halbkugelförmigen Brennerfläche 4 und vor dem Gasverteiler 5' im Trichter 10 ein Verdrängungskörper 12 an¬ zuordnen und vor der Öffnung 2 des Tragbleches 1 eine Gaszu- strömkammer 13 in Form eines gegen den Innenraum 11 offenen, spiral- oder schraubenlinienformig verlaufenden und sich im Querschnitt reduzierenden Gasführungskanales 14 vorzusehen, wie dies in den Fig. 1, 3 veranschaulicht ist, aus denen auch hervorgeht, daß das Tragblech 1 unter Zwischenanordnung eines Wärmeisolationsringes 15 mit einer Trägerplatte 16 verbunden und diese mit der GasZuströmkammer 13 versehen ist. Die Trä¬ gerplatte 16 bildet die Verschlußtür für die Brennkammer 18 eines "Kompaktheizkessels" 19, von dem in Fig. 6 nur das hier interessierende Oberteil dargestellt ist.Also for burners operated with blowers, it has proven to be advantageous with regard to the gas distribution to assign a displacement body 12 in the interior 11 of the hemispherical burner surface 4 and in front of the gas distributor 5 'in the funnel 10 and in front of the opening 2 of the support plate 1 to provide a gas inflow chamber 13 in the form of an open to the interior 11, spiral or helical and reducing in cross-section gas guide channel 14, as illustrated in FIGS. 1, 3, from which it can also be seen that the support plate 1 under Intermediate arrangement of a heat insulation ring 15 connected to a carrier plate 16 and this is provided with the gas inflow chamber 13. The carrier plate 16 forms the closing door for the combustion chamber 18 of a "compact heating boiler" 19, of which only the upper part of interest is shown in FIG. 6.
Eine besondere Ausführungsform bezüglich der Befestigung der Gasverteiler 5, 5' ist in Fig. 3 verdeutlicht. Abgesehen da¬ von, daß sich Strahlungsbrenner der vorbeschriebenen Art her¬ vorragend bewährt haben, und die damit bestückten Heizkessel eine nahezu stickoxydfreie Emission zeigen, kann sich jedoch ein gewisser Gefährdungsbereich dort zeigen, wo der äußere Gasverteiler 5 am Tragblech befestigt ist, der sich relativ nahe zur eigentlichen, vom Drahtgewebe gebildeten Brennerflai¬ che 4 erstreckt und somit auch relativ hohen und wechselnden Wärmebelastungen ausgesetzt ist, die zum Reißen der Befesti¬ gung führen können. Solche Risse machen zwar den Brenner nicht betriebsunfähig, aber die von den Gasverteilern 5, 5' zu fordernde, möglichst gleichmäßige Gasverteilung zur Bren- nerflache hin wird von solchen Rissen bzw. "undichten" Stel¬ len bis zu einem gewissen Grade gestört.A special embodiment with regard to the fastening of the gas distributors 5, 5 'is illustrated in FIG. 3. Apart from the fact that radiant burners of the type described above have proven to be excellent and the boilers equipped with them show an almost nitrogen oxide-free emission, a certain danger area can be found where the outer gas distributor 5 is attached to the support plate, which is relatively extends close to the actual burner surface 4 formed by the wire mesh and is therefore also exposed to relatively high and changing heat loads which can lead to the fastening being torn. Such cracks do not render the burner inoperable, but the gas distribution 5, 5 'required and as uniform as possible gas distribution for burning Such cracks or "leaky" locations interfere to a certain extent.
Um dem entgegenzuwirken, ist der Brenner gemäß Fig. 3 derart ausgebildet, daß bei Anordnung von zwei Gasverteilern 5, 5' die Breite B des Umfangsrandes 8 des inneren Gasverteilers 5 ' im wesentlichen der radialen Distanz A^ beider Gasverteiler 5, 5' zuzüglich der Breite B^ des Umfangsrandes 8' des äuße¬ ren Gasverteilers 5 auf dem des inneren befestigt ist, wobei der Ümfangsrand 8' auf dem des inneren Gasverteilers 5 ' nahe dem Ansatzbereich AB des inneren Gasverteilers 5 ' am Trag¬ blech 1 befestigt ist.In order to counteract this, the burner according to FIG. 3 is designed such that when two gas distributors 5, 5 'are arranged, the width B of the peripheral edge 8 of the inner gas distributor 5' is essentially the radial distance A ^ of both gas distributors 5, 5 'plus the Width B ^ of the peripheral edge 8 'of the outer gas distributor 5 is fastened to that of the inner one, the peripheral edge 8' being fastened to that of the inner gas distributor 5 'near the attachment area AB of the inner gas distributor 5' on the supporting plate 1.
Durch diese Ausbildung steht der äußere Gasverteiler 5 nicht mehr in direkter Verbindung mit dem Tragblech 1, sondern wird vom Ümfangsrand des inneren Gasverteilers 5' gehalten, der seinerseits wiederum soweit wie möglich entfernt von der Brennerfläche am Tragblech 1 befestigt ist. Dadurch wird der Bewegungsspielraum des Umfangsrandes des äußeren, bzw. bren- nerflächennahen Verteilers 5 in ausreichendem Maße vergrö¬ ßert, und es kann nicht mehr zu Umfangsrandabrissen des äuße¬ ren Gasverteilers 5 kommen. Der gleiche Effekt wäre übrigens auch erreichbar, wenn man auf dem Träger einen zusätzlichen Trägerring anordnete, der nur am inneren Umfang am Träger be¬ festigt wäre und auf dem man die Umfangsränder der Gasvertei¬ ler befestigen würde.With this design, the outer gas distributor 5 is no longer in direct connection with the support plate 1, but is held by the peripheral edge of the inner gas distributor 5 ', which in turn is attached to the support plate 1 as far as possible from the burner surface. As a result, the freedom of movement of the peripheral edge of the outer or near the burner surface of the distributor 5 is increased to a sufficient extent, and it is no longer possible for the outer gas distributor 5 to be torn off at the peripheral edge. The same effect would also be achievable if an additional carrier ring were arranged on the carrier, which would only be attached to the carrier on the inner circumference and on which the peripheral edges of the gas distributors would be fastened.
Wie ferner aus Fig. 3 ersichtlich, ist unter dem Tragblech 1 im Bereich seines Außenumfanges zwischen diesen und dem Wär¬ meisolationsring 15 ein weiterer Isolationsring 20 angeord¬ net, wobei dieser innen an der äußeren Stufenprägung 7 des Tragbleches 1 anliegt, und schließlich ist das Tragblech* 1 mit seinem äußeren Ümfangsrand durch einen außen aufgesetzten Spann- und Isolationsring 17 am Wärmeisolationsring 15 fest¬ gelegt. Diese Ausbildung trägt ebenfalls unmittelbar zur Wärmeentlastung dieses Bereiches bei, da dadurch aus dem un- teren ringförmigen Randbereich der Brennerfläche4 kein Gas mehr austreten und dort brennen kann.As can further be seen from FIG. 3, a further insulation ring 20 is arranged under the support plate 1 in the region of its outer circumference between the latter and the heat insulation ring 15, this lying on the inside against the outer step embossment 7 of the support plate 1, and finally this is Support plate * 1 with its outer peripheral edge fixed by an externally placed tensioning and insulation ring 17 on the heat insulation ring 15. This training also contributes directly to the heat relief in this area, as gas can no longer escape and burn there.
Ein solcher Ring 17 ließe sich übrigens auch ohne weiteres auf den atmosphärischen Brenner nach Fig. 4 aufstecken, der selbstverständlich in horizontaler Stellung, wie dargestellt, im unteren Bereich eines Heizkesselbrennschachtes anzuordnen ist. Such a ring 17 could, moreover, be easily fitted onto the atmospheric burner according to FIG. 4, which of course is to be arranged in the horizontal position, as shown, in the lower region of a boiler burner shaft.

Claims

Patentansprüche: Claims:
1. Strahlungsbrenner für Heizkessel, bestehend aus einem Tragblech (1) mit zu einer Gaseinströmöffnung (2) im Tragblech (1) führenden Gaszufuhrleitung (3) und mit ei¬ ner auf der anderen Seite des Tragbleches (1) angeordne¬ ten gewölbten Brennerfläche (4) aus Drahtgewebe(4' ), d a d u r c h g e k e n n z e i c h n e t , daß die Brennerfläche (4) in Form einer Halbkugel ausge¬ bildet und unter dieser konzentrisch und mit in bezug auf den Halbkugeldurchmesser (D) der Brennerfläche (4) wesentlich kleineren Abstand (A) mindestens ein eben¬ alls halbkugelförmiger und ebenfalls am Tragblech (1) befestigter Gasverteiler (5) aus gelochtem Blech ange¬ ordnet ist, und daß der Durchmesser ( ^) der Gasein¬ strömöffnung (6) im wesentlichen dem Durchmesser (D2) des halbkugelförmigen Gasverteilers (5) entspricht.1. Radiant burner for boilers, consisting of a support plate (1) with a gas supply line (3) leading to a gas inflow opening (2) in the support plate (1) and with a curved burner surface (1) arranged on the other side of the support plate (1) 4) made of wire mesh (4 '), characterized in that the burner surface (4) forms in the form of a hemisphere and at least concentrically therewith and with a substantially smaller distance (A) with respect to the hemisphere diameter (D) of the burner surface (4) a gas distributor (5) made of perforated sheet metal, which is also hemispherical and also fastened to the support plate (1), and that the diameter (^) of the gas inflow opening (6) essentially corresponds to the diameter (D2) of the hemispherical gas distributor ( 5) corresponds.
2. Brenner nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß das Tragblech (1) mit ringförmigen Stufenprägungen (7) versehen ist, an denen die Brennerfläche (4) und der mindestens eine Gasverteiler (5) mit ihren Umfangsrän- dern (8) angeschlossen sind.2. Burner according to claim 1, so that the supporting plate (1) is provided with annular step embossments (7), to which the burner surface (4) and the at least one gas distributor (5) are connected with their peripheral edges (8).
3. Brenner nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß das Tragblech (1) zur Gaszufuhrseite (GS) hin in Form eines in bezug auf die Brennerachse (9) konvex ge¬ wölbten Gasführungstrichters (10) ausgebildet ist.3. Burner according to claim 1 or 2, so that the support plate (1) towards the gas supply side (GS) is designed in the form of a convex gas guide funnel (10) with respect to the burner axis (9).
4. Brenner nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , daß im Innenraum (11) der halbkugelförmigen Brennerflä¬ che (4) und vor dem Gasverteiler (5 ) im Trichter (10) ein Verdrängungskörper (12) angeordnet ist. 4. Burner according to claim 3, characterized in that a displacement body (12) is arranged in the interior (11) of the hemispherical Brennerflä¬ surface (4) and in front of the gas distributor (5) in the funnel (10).
5. Brenner nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , daß vor der Öffnung (2) des Tragbleches (1) eine Gaszu¬ strömkammer (13) in Form eines gegen den Innenraum (11) offenen, spiral- oder schraubenlinienformig verlaufenden und sich im Querschnitt reduzierenden Gasführungskanales (14) angeordnet ist.5. Burner according to one of claims 1 to 4, characterized in that in front of the opening (2) of the support plate (1) a Gaszu¬ flow chamber (13) in the form of an against the interior (11) open, spiral or helical and extending is arranged in the cross section reducing gas guide channel (14).
6. Brenner nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , daß das Tragblech (1) unter Zwischenanordnung eines Wär¬ meisolationsringes (15) mit einer Trägerplatte (16) ver¬ bunden und diese mit der GasZuströmkammer (13) versehen ist.6. Burner according to one of claims 1 to 5, so that the support plate (1) with the interposition of a heat insulation ring (15) is connected to a carrier plate (16) and this is provided with the gas inflow chamber (13).
7. Brenner nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , daß bei Anordnung von zwei Gasverteilern (5 , 5' ) die Breite (B) des Umfangsrandes (8) des inneren Gasvertei¬ lers (5') im wesentlichen der radialen Distanz (A^) bei¬ der Gasverteiler (5, 5') zuzüglich der Breite (B^) des Umfangsrandes (8') des äußeren Gasverteilers (5) auf dem des inneren befestigt ist, wobei der Ümfangsrand (8') auf dem des inneren Gasverteilers (5') nahe dem Ansatz¬ bereich (AB) des inneren Gasverteilers (5') am Tragblech (1) befestigt ist.7. Burner according to one of claims 1 to 6, characterized in that when two gas distributors (5, 5 ') are arranged, the width (B) of the peripheral edge (8) of the inner gas distributor (5') is essentially the radial distance ( A ^) bei¬ the gas distributor (5, 5 ') plus the width (B ^) of the peripheral edge (8') of the outer gas distributor (5) on which the inner is attached, the peripheral edge (8 ') on that of the inner Gas distributor (5 ') near the attachment area (AB) of the inner gas distributor (5') is fastened to the support plate (1).
8. Brenner nach einem der Ansprüche 1 bis 7, d a d u r c h g e k e n n z e i c h n e t , daß unter dem Tragblech (1) im Bereich seines Außenum- fanges zwischen diesen und dem Wärmeisolationsring (15) ein weiterer Isolationsring (20) angeordnet ist.8. Burner according to one of claims 1 to 7, so that a further insulation ring (20) is arranged under the support plate (1) in the area of its outer circumference between the latter and the heat insulation ring (15).
9. Brenner nach Anspruch 8, d a d u r c h g e k e n n z e i c h n e t , daß der Isolationsring (20) innen an der äußeren Stufen¬ prägung (17) anliegt. 9. Burner according to claim 8, characterized in that the insulation ring (20) rests on the inside on the outer steps (17).
10. Brenner nach einem der Ansprüche 1 bis 9, d a d u r c h g e k e n n z e i c h n e t , daß das Tragblech (1) mit seinem äußeren Ümfangsrand durch einen außen aufgesetzten Spann- und Isolationsring (17) am Wärmeisolationsring (15) festgelegt ist. 10. Burner according to one of claims 1 to 9, d a d u r c h g e k e n n z e i c h n e t that the support plate (1) with its outer peripheral edge by an externally placed clamping and insulation ring (17) on the heat insulation ring (15) is fixed.
EP93912581A 1992-06-13 1993-06-11 Radiant burner for boilers Expired - Lifetime EP0598083B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19924219443 DE4219443A1 (en) 1992-06-13 1992-06-13 Radiation burner for central heating boiler - has wire mesh burner face with curved section in downstream direction aligned with support aperture
DE4219443 1992-06-13
DE9304247U DE9304247U1 (en) 1993-03-23 1993-03-23 Radiant burners for boilers
DE9304247U 1993-03-23
PCT/DE1993/000506 WO1993025846A1 (en) 1992-06-13 1993-06-11 Radiant burner bor boilers

Publications (2)

Publication Number Publication Date
EP0598083A1 true EP0598083A1 (en) 1994-05-25
EP0598083B1 EP0598083B1 (en) 1996-04-24

Family

ID=25915668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93912581A Expired - Lifetime EP0598083B1 (en) 1992-06-13 1993-06-11 Radiant burner for boilers

Country Status (9)

Country Link
US (1) US5474443A (en)
EP (1) EP0598083B1 (en)
AT (1) ATE137323T1 (en)
CA (1) CA2115272A1 (en)
DE (1) DE59302359D1 (en)
DK (1) DK0598083T3 (en)
ES (1) ES2086942T3 (en)
GR (1) GR3019934T3 (en)
WO (1) WO1993025846A1 (en)

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ATE189513T1 (en) * 1993-12-06 2000-02-15 Papst Motoren Gmbh & Co Kg BURNER FAN FOR GAS PREMIX BURNERS
AUPP222698A0 (en) * 1998-03-10 1998-04-02 Yeomans, Allan James Buoyant support means for radiant energy collecting apparatus
FR2800444B1 (en) * 1999-10-29 2002-03-08 Ct D Etude Et De Realisation D OVERHEAD HEAT TRANSMITTER WITH INFRARED AND LIGHT GAS RADIATION IN PARTICULAR FOR VERY LOW PRESSURE SUPPLY
KR100460640B1 (en) * 2002-11-20 2004-12-29 삼양보일러 주식회사 A boiler
US20060251998A1 (en) * 2003-04-18 2006-11-09 Dinand Lamberts Metal burner membrane
US7631640B2 (en) * 2004-07-07 2009-12-15 Advanced Propulsion Technologies, Inc. Radiant burner
US7611351B2 (en) * 2005-06-24 2009-11-03 Chemical Physics Technologies, Inc. Radiant gas burner
ITPD20070363A1 (en) * 2007-11-06 2009-05-07 Sit La Precisa Spa BURNER, IN PARTICULAR GAS BURNER WITH PRE-MIXING
JP2011506906A (en) * 2007-12-17 2011-03-03 ベーカート・コンバスチョン・テクノロジー・ベスローテン・フェンノートシャップ New premix burner
US20150330623A1 (en) 2012-12-12 2015-11-19 3M Innovative Properties Company Catalytic burner
PL3126737T3 (en) * 2014-04-04 2020-06-01 Ferroli S.P.A. Pre-mixed gas burner cooled by an air-gas mixture
CN109716023B (en) 2016-09-13 2021-06-18 贝卡尔特燃烧技术股份有限公司 Premix gas burner
WO2019011737A1 (en) 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. Premix gas burner
EP3652485B1 (en) 2017-07-13 2022-04-20 Bekaert Combustion Technology B.V. Premix gas burner
CN110832253A (en) 2017-07-13 2020-02-21 贝卡尔特燃烧技术股份有限公司 Premix gas burner

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Also Published As

Publication number Publication date
EP0598083B1 (en) 1996-04-24
DE59302359D1 (en) 1996-05-30
DK0598083T3 (en) 1996-08-12
GR3019934T3 (en) 1996-08-31
ES2086942T3 (en) 1996-07-01
ATE137323T1 (en) 1996-05-15
WO1993025846A1 (en) 1993-12-23
CA2115272A1 (en) 1993-12-23
US5474443A (en) 1995-12-12

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