EP0905446B1 - Atmospheric water cooled gas burner - Google Patents
Atmospheric water cooled gas burner Download PDFInfo
- Publication number
- EP0905446B1 EP0905446B1 EP98114253A EP98114253A EP0905446B1 EP 0905446 B1 EP0905446 B1 EP 0905446B1 EP 98114253 A EP98114253 A EP 98114253A EP 98114253 A EP98114253 A EP 98114253A EP 0905446 B1 EP0905446 B1 EP 0905446B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas burner
- burner
- burner plate
- cooling passages
- plate
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title 1
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000002826 coolant Substances 0.000 abstract description 2
- 238000005524 ceramic coating Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
-
- 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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
- F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
Definitions
- the invention is based on an atmospheric, water-cooled gas burner the preamble of claim 1.
- each individual burner element has flow bodies with a combustion zone formed in a ridge bar with flame exit openings, the ridge bar forming a burner plate for the respective burner elements.
- Cooling tubes are provided for cooling the combustion zones and penetrate the flow bodies or burner elements. This design requires careful mutual adjustment of the flow bodies so that the gas burner has a uniform and uniform flame pattern.
- the cooling pipes are a bit away from the ridge strips, so that the cooling of the ridge strips, which is intended to reduce NO x formation, is also limited.
- the gas burner has a mixing body in which several injector-like mixing tubes for the fuel gas-air mixture are combined into a mixing block, as well as over a firing zone, in which flame outlet openings are arranged.
- the burning zone is from a Burner plate executed separately from the mixing body, which is spread over all Mixing tubes extends. Cooling channels are also integrated in the mixing body.
- the gas burner also known from DE 39 03 690 A1 consists essentially of two Assembled sheet metal parts that have an upper and lower section and thereby a combustion chamber, a burner plate and arranged on both sides of the burner plate Form cooling channels.
- the burner plate and the grid plate can be made of Stainless steel sheets are made, preferably by Laser welding are connected. But also the use of low-alloy or unalloyed steel sheets are possible.
- Cooling channels by expanding corresponding wall areas of the adjacent plates using a pressurized supplied fluids are produced.
- the so educated Channel system can be advantageous in two diagonally opposite corners of the burner plate in Open connecting piece that on the burner plate or Sheet metal parts are attached.
- the temperature stability of the firing zone or burner plate can be increased if a Ceramic layer is applied.
- the flame outlet openings in the burner plate can advantageous with a streamlined passage or Be provided collar, which at the same time Flame control improved and the tendency to pollution reduced.
- FIG. 1 shows a transverse to the Flow bodies guided section through a partial area an atmospheric, water-cooled gas burner
- Figure 2 a side view of a flow body of the gas burner according to Figure 1
- Figure 3 enlarged a section through a portion of the burner plate of the gas burner Line III-III in Figure 1.
- the gas burner has a number of spaced in parallel juxtaposed flow bodies 10, the together from a burner plate made of stainless steel 12 are covered.
- Each flow body 10 has in one flat housing 14 two injector-like widened Entry openings 16, each via a cylindrical Distance 18 of a mixing channel and one itself adjoining, diffuser-like widening section 20 in lead a mixing chamber 22.
- the two open to the top Mixing chambers 22 have edge strips 24 on their long sides provided with which the flow body 10 in the way described in more detail below on the Burner plate 12 are attached.
- the burner plate 12 is slit-shaped Flame outlet openings 26 provided on both Long edges each have a solid collar 28.
- the Flame exit openings 26 are parallel in rows arranged side by side, their location, number and mutual spacing of the arrangement of the flow bodies 10 equivalent.
- Stainless steel existing sheet metal strips 30 attached over both narrow sides of the flow body 10 extend and there are integrally connected to one another via webs 32.
- the burner plate 12 is also on the narrow sides the flow body 10 with edge regions 34, which with the webs 32 of the grid plate 30, 32 are firmly connected.
- the metal strips 30 and longitudinal areas 36 of the webs 32, and preferably overlying areas 38 and 40 of FIG Burner plate 12 are arched so that between them a self-contained channel system for one Coolant with parallel channels 42 and this connecting transverse channels 44 results.
- the bulge can Example as known by the fact that between the abutting and in the appropriate places and pressure-tightly connected plates 12 and 30, 32 a Hydraulic fluid is injected.
- the channel system 42, 44 is at two diametrically opposite corners of the gas burner with one each attached to the grid plate 30, 32 Connection piece 46 connected.
- the longitudinal edges of the metal strips 30 are next to theirs Connection seams 48 with retaining strips 50 for the Flow body 10 provided. After the correct position Placing the flow body 10 on the burner plate 12 the retaining strips 50 over the edge strips 24 Flow body 10 bent and this on the burner plate 12th established.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Die Erfindung geht aus von einem atmosphärischen, wassergekühlten Gasbrenner nach dem Oberbegriff des Anspruchs 1.The invention is based on an atmospheric, water-cooled gas burner the preamble of claim 1.
Bei bekannten Gasbrennern dieser Art (DE 195 42 649 A1 und DE 92 16 605 U1) sind mindesten zwei nebeneinander angeordnete Brennerelemente vorgesehen. Jedes einzelne Brennerelement verfügt über Strömungskörper mit einer in einer Firstleiste ausgebildeten Brennzone mit Flammenaustrittsöffnungen, wobei die Firstleiste eine Brennerplatte für das jeweilige Brennerelemente bildet. Zur Kühlung der Brennzonen sind Kühlrohre vorgesehen, welche die Strömungskörper bzw. Brennerelemente durchsetzen. Diese Ausführung benötigt eine sorgfältige gegenseitige Justierung der Strömungskörper, damit sich ein einheitliches und gleichmäßiges Flammenbild des Gasbrenners ergibt. Außerdem sind die Kühlrohre von den Firstleisten ein Stück weit entfernt, so dass sich auch die zur Reduzierung der NOx-Bildung vorgesehene Kühlung der Firstleisten in Grenzen hält.In known gas burners of this type (DE 195 42 649 A1 and DE 92 16 605 U1) at least two burner elements arranged next to one another are provided. Each individual burner element has flow bodies with a combustion zone formed in a ridge bar with flame exit openings, the ridge bar forming a burner plate for the respective burner elements. Cooling tubes are provided for cooling the combustion zones and penetrate the flow bodies or burner elements. This design requires careful mutual adjustment of the flow bodies so that the gas burner has a uniform and uniform flame pattern. In addition, the cooling pipes are a bit away from the ridge strips, so that the cooling of the ridge strips, which is intended to reduce NO x formation, is also limited.
Ein weiterer Gasbrenner ist aus DE 296 14 706 U1 bekannt. Der Gasbrenner verfügt über einen Mischkörper, in dem mehrere injektorartige Mischrohre für das Brenngas-Luft-Gemisch zu einem Mischblock zusammengefasst sind, sowie über eine Brennzone, in welcher Flammenaustrittsöffnungen angeordnet sind. Die Brennzone wird von einer getrennt von dem Mischkörper ausgeführten Brennerplatte realisiert, die sich über alle Mischrohre erstreckt. In den Mischkörper sind ferner Kühlkanälen integriert.Another gas burner is known from DE 296 14 706 U1. The gas burner has a mixing body in which several injector-like mixing tubes for the fuel gas-air mixture are combined into a mixing block, as well as over a firing zone, in which flame outlet openings are arranged. The burning zone is from a Burner plate executed separately from the mixing body, which is spread over all Mixing tubes extends. Cooling channels are also integrated in the mixing body.
Der aus DE 39 03 690 A1 ferner bekannte Gasbrenner ist im Wesentlichen aus zwei Blechteilen zusammengesetzt, die einen oberen und unteren Abschnitt haben und dabei eine Brennkammer, eine Brennerplatte und beiderseits der Brennerplatte angeordnete Kühlkanäle ausbilden. The gas burner also known from DE 39 03 690 A1 consists essentially of two Assembled sheet metal parts that have an upper and lower section and thereby a combustion chamber, a burner plate and arranged on both sides of the burner plate Form cooling channels.
Mit der erfindungsgemäßen Anordnung nach den Merkmalen des Hauptanspruchs läßt sich ein einfacher und kostengünstiger Aufbau des Gasbrenners verwirklichen, bei welchem alle Flammenaustrittsöffnungen zwangsläufig die vorgeschriebene gegenseitige Zuordnung haben und bei welchem sich außerdem eine gute Kühlwirkung ergibt, weil die Kühlkanäle unmittelbar in der Brennzone direkt neben den Flammenaustrittsöffnungen angeordnet sind.With the arrangement according to the features of Main claim can be a simple and inexpensive Realize the construction of the gas burner, in which all Flame outlet openings inevitably the prescribed have mutual assignment and which one also gives a good cooling effect because the cooling channels immediately in the firing zone right next to the Flame outlet openings are arranged.
Durch die in den Unteransprüchen aufgeführten Merkmale sind vorteilhafte Ausgestaltungen des Gegenstandes des Hauptanspruchs möglich.By the features listed in the subclaims advantageous embodiments of the subject of Main claim possible.
Eine optimale Kühlwirkung läßt sich erzielen, wenn die Kühlkanäle zwischen der Brennerplatte selbst und vorzugsweise an deren Unterseite befestigten, entsprechend geformten Blechteilen gebildet sind.An optimal cooling effect can be achieved if the Cooling channels between the burner plate itself and preferably attached to the underside, accordingly molded sheet metal parts are formed.
Der Zusammenbau der Brennerplatte mit den die Kühlkanäle begrenzenden Blechteile wird vereinfacht, wenn die Blechteile zu einer mit Aussparungen für die Strömungskörper versehenen Gitterplatte verbunden sind.Assembling the burner plate with the cooling channels limiting sheet metal parts is simplified if the Sheet metal parts to one with recesses for the flow body provided grid plate are connected.
Die Brennerplatte und die Gitterplatte können aus Edelstahlblechen bestehen, die vorzugsweise durch Laserschweißen verbunden sind. Aber auch die Verwendung von niedriglegierten oder unlegierten Stahlblechen ist möglich.The burner plate and the grid plate can be made of Stainless steel sheets are made, preferably by Laser welding are connected. But also the use of low-alloy or unalloyed steel sheets are possible.
Weiter wird vorgeschlagen, daß miteinander verbundene Kühlkanäle durch Aufweiten entsprechender Wandbereiche der aneinanderliegenden Platten mittels eines unter Druck zugeführten Fluids hergestellt sind. Das so gebildete Kanalsystem kann vorteilhaft an zwei sich diagonal gegenüberliegenden Ecken der Brennerplatte in Anschlußstutzen einmünden, die an der Brennerplatte oder den Blechteilen befestigt sind.It is also proposed that interconnected Cooling channels by expanding corresponding wall areas of the adjacent plates using a pressurized supplied fluids are produced. The so educated Channel system can be advantageous in two diagonally opposite corners of the burner plate in Open connecting piece that on the burner plate or Sheet metal parts are attached.
Der Zusammenbau der Brennerplatte mit den Strömungskörpern wird vereinfacht, wenn die Haltemittel für die Strömungskörper durch abgewinkelte Randbereiche der Blechteile gebildet sind.Assembling the burner plate with the flow bodies is simplified if the holding means for the Flow body through angled edge areas of the Sheet metal parts are formed.
Die Temperaturstabiliät der Brennzone bzw. Brennerplatte kann erhöht werden, wenn auf die Brennerplatte eine Keramikschicht aufgebracht wird.The temperature stability of the firing zone or burner plate can be increased if a Ceramic layer is applied.
Die Flammenaustrittsöffnungen in der Brennerplatte können vorteilhaft mit einem strömungsgünstigen Durchzug bzw. Kragen versehen sein, der gleichzeitig auch die Flammenhaltung verbessert und die Verschmutzungsneigung verringert.The flame outlet openings in the burner plate can advantageous with a streamlined passage or Be provided collar, which at the same time Flame control improved and the tendency to pollution reduced.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 einen quer zu den Strömungskörpern geführten Schnitt durch einen Teilbereich eines atmosphärischen, wassergekühlten Gasbrenners, Figur 2 eine Seitenansicht eines Strömungskörpers des Gasbrenners nach Figur 1 und Figur 3 vergrößert einen Schnitt durch einen Teilbereich der Brennerplatte des Gasbrenners nach Linie III-III in Figur 1.An embodiment of the invention is in the drawing shown and in the description below explained. 1 shows a transverse to the Flow bodies guided section through a partial area an atmospheric, water-cooled gas burner, Figure 2 a side view of a flow body of the gas burner according to Figure 1 and Figure 3 enlarged a section through a portion of the burner plate of the gas burner Line III-III in Figure 1.
Der Gasbrenner hat eine Anzahl von mit Abstand parallel
nebeneinander angeordneten Strömungskörpern 10, die
gemeinsam von einer aus Edelstahl bestehenden Brennerplatte
12 überdeckt sind. Jeder Strömungskörper 10 hat in einem
flachbauenden Gehäuse 14 zwei injektorartig aufgeweitete
Eingangsöffnungen 16, die je über einen zylindrischen
Abstand 18 eines Mischkanals und einen sich daran
anschließenden, diffusorartig erweiternden Abschnitt 20 in
eine Mischkammer 22 führen. Die beiden nach oben offenen
Mischkammern 22 sind an ihren Längsseiten mit Randleisten 24
versehen, mit denen die Strömungskörper 10 in der
nachstehend noch näher beschriebenen Weise an der
Brennerplatte 12 befestigt sind.The gas burner has a number of spaced in parallel
juxtaposed
Die Brennerplatte 12 ist mit schlitzförmigen
Flammenaustrittsöffnungen 26 versehen, die an beiden
Längskanten je einen durchgezogenen Kragen 28 haben. Die
Flammenaustrittsöffnungen 26 sind in Reihen parallel
nebeneinander angeordnet, deren Lage, Anzahl und
gegenseitiger Abstand der Anordnung der Strömungskörper 10
entspricht. An der Unterseite der Brennerplatte 12 sind
zwischen den Reihen der Flammenaustrittsöffnungen 26 aus
Edelstahl bestehende Blechleisten 30 befestigt, die über
beide Schmalseiten der Strömungskörper 10 hinwegreichen und
dort über Stege 32 einstückig miteinander verbunden sind.
Die Brennerplatte 12 steht ebenfalls über die Schmalseiten
der Strömungskörper 10 mit Randbereichen 34 hervor, die mit
den Stegen 32 der Gitterplatte 30, 32 fest verbunden sind.The
Die Blechleisten 30 und Längsbereiche 36 der Stege 32, sowie
vorzugsweise die darüberliegenden Bereiche 38 und 40 der
Brennerplatte 12, sind so aufgewölbt, daß sich zwischen
ihnen ein in sich geschlossenes Kanalsystem für eine
Kühlflüssigkeit mit Parallelkanälen 42 und diese
verbindenden Querkanälen 44 ergibt. Die Aufwölbung kann zum
Beispiel wie bekannt dadurch erfolgen, daß zwischen die
aneinanderanliegenden und an den entsprechenden Stellen fest
und druckdicht verbundenen Platten 12 und 30, 32 eine
Druckflüssigkeit eingepreßt wird. Das Kanalsystem 42, 44 ist
an zwei diametral gegenüberliegenden Ecken des Gasbrenners
mit je einem an der Gitterplatte 30, 32 befestigten
Anschlußstutzen 46 verbunden.The
Die Längsränder der Blechleisten 30 sind neben ihren
Verbindungsnähten 48 mit Halteleisten 50 für die
Strömungskörper 10 versehen. Nach dem lagerichtigen
Aufsetzen der Strömungskörper 10 auf die Brennerplatte 12
werden die Halteleisten 50 über die Randleisten 24 der
Strömungskörper 10 gebogen und diese an der Brennerplatte 12
festgelegt.The longitudinal edges of the
Claims (6)
- Atmospheric, water-cooled gas burner comprising at least two burner elements which are arranged next to one another and which each have at least one flow body (10) having an inlet opening (16) expanded in an injector-like manner, a mixing passage widening in a diffuser-like manner, and a distribution chamber (22), and furthermore comprising a combustion zone in which flame-discharge openings lying above the distribution chambers are arranged and which is connected to cooling-water-carrying cooling passages (42, 44) in a heat-conducting manner, characterized in that the combustion zone is realized by a burner plate (12) which is made separately from the flow bodies (10), extends over all the flow bodies (10) and is provided with retaining means (50) for the flow bodies (10) and on which the cooling passages (42, 44) are arranged.
- Gas burner according to Claim 1, characterized in that the cooling passages (42, 44) are formed between the burner plate (12) itself and correspondingly formed sheet-metal parts (30, 32) preferably fastened to the underside of the said burner plate (12).
- Gas burner according to Claim 2, characterized in that the sheet-metal parts (30, 32) defining the cooling passages (42, 44) are connected to form a grid plate provided with apertures for the flow bodies (10).
- Gas burner according to Claim 3, characterized in that cooling passages (42, 44) connected to one another are produced by expanding corresponding wall regions of the plates (12, 30, 32), bearing against one another, by means of a fluid fed under pressure.
- Gas burner according to Claim 2, characterized in that the retaining means for the flow bodies (10) are formed by angled edge regions (50) of the sheet-metal parts (30).
- Gas burner according to one of the preceding claims, characterized in that a ceramic layer is applied to the burner plate (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742089 | 1997-09-24 | ||
| DE19742089A DE19742089C2 (en) | 1997-09-24 | 1997-09-24 | Atmospheric, water-cooled gas burner |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0905446A2 EP0905446A2 (en) | 1999-03-31 |
| EP0905446A3 EP0905446A3 (en) | 1999-09-08 |
| EP0905446B1 true EP0905446B1 (en) | 2003-12-17 |
Family
ID=7843440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98114253A Expired - Lifetime EP0905446B1 (en) | 1997-09-24 | 1998-07-30 | Atmospheric water cooled gas burner |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0905446B1 (en) |
| AT (1) | ATE256841T1 (en) |
| DE (2) | DE19742089C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10008549B4 (en) * | 2000-02-24 | 2004-03-25 | Robert Bosch Gmbh | Burner head with metal plate and pipe sections for a coolant |
| WO2002044618A1 (en) * | 2000-12-01 | 2002-06-06 | Furigas Assen B.V. | Premix burner with curved impermeable end cap |
| GB2606769A (en) * | 2021-05-20 | 2022-11-23 | Beckett Thermal Solutions Ltd | Gas burner membrane |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1205556B (en) * | 1986-08-29 | 1989-03-23 | Polidoro Aldo | GAS BURNER HEAD OBTAINED BY A PUNCHED SHEET |
| AT397567B (en) * | 1988-02-08 | 1994-05-25 | Vaillant Gmbh | GAS BURNER |
| IT226008Y1 (en) * | 1991-12-06 | 1997-03-11 | Aldo Polidoro | BURNER-TYPE GAS BURNER |
| AT398470B (en) * | 1992-08-03 | 1994-12-27 | Vaillant Gmbh | ATMOSPHERIC PRE-MIXED GAS BURNER ARRANGEMENT WITH A BURNER PLATE |
| DE29614706U1 (en) * | 1995-08-17 | 1996-10-02 | Joh. Vaillant Gmbh U. Co, 42859 Remscheid | burner |
| DE19542649A1 (en) * | 1995-11-15 | 1997-05-22 | Bosch Gmbh Robert | Atmospheric water=cooled gas burner |
-
1997
- 1997-09-24 DE DE19742089A patent/DE19742089C2/en not_active Expired - Fee Related
-
1998
- 1998-07-30 DE DE59810446T patent/DE59810446D1/en not_active Expired - Fee Related
- 1998-07-30 AT AT98114253T patent/ATE256841T1/en not_active IP Right Cessation
- 1998-07-30 EP EP98114253A patent/EP0905446B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE19742089A1 (en) | 1999-03-25 |
| DE19742089C2 (en) | 2002-03-07 |
| DE59810446D1 (en) | 2004-01-29 |
| EP0905446A3 (en) | 1999-09-08 |
| ATE256841T1 (en) | 2004-01-15 |
| EP0905446A2 (en) | 1999-03-31 |
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