EP3254027A1 - Gasverteilervorrichtung für einen atmosphärischen gasbrenner - Google Patents
Gasverteilervorrichtung für einen atmosphärischen gasbrennerInfo
- Publication number
- EP3254027A1 EP3254027A1 EP16703943.7A EP16703943A EP3254027A1 EP 3254027 A1 EP3254027 A1 EP 3254027A1 EP 16703943 A EP16703943 A EP 16703943A EP 3254027 A1 EP3254027 A1 EP 3254027A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- coaxial
- injector
- outlet opening
- distribution device
- 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
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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
-
- 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
-
- 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
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14641—Special features of gas burners with gas distribution manifolds or bars provided with a plurality of nozzles
Definitions
- the invention relates to a gas distributor device for an atmospheric gas burner according to claim 1. Furthermore, the invention relates to an atmospheric burner with such a gas distributor device according to claim 10.
- Atmospheric or self-priming burners represent a widespread variant of gas burners, especially in the lower power range.
- the supply of oxygen-containing fuel is carried out
- the combustion air is in the gas valve by the after
- Combustion air into the combustion chamber is due to the thermal buoyancy of the effluent combustion exhaust gases.
- the gas in the valve tears only part of the required combustion air
- Gas flow entrains ambient air (primary air), with mixing processes of these gaseous components occurring at the layer boundary between fuel gas and ambient air.
- the proportion of air in the air-gas mixture produced as well as its homogeneity varies depending on the particular burner concept.
- a gas burner comprising a distributor housing with a gas supply port and at least one formed in a front wall of the distributor housing and connected via a gas supply passage to the gas supply port injector.
- the injector is in the form of a Koaxialinjektors with a central air outlet opening and one along its circumference of the central
- Air outlet opening extending and surrounding coaxial
- Gas outlet opening is a tubular gas flow generated, which is surrounded on both sides by air. This will be a particularly good
- Blending between fuel gas and combustion air allows, which arises in particular due to turbulence effects in the boundary layers between the flowing fuel gas and the entrained ambient air.
- the distributor housing a rear wall opposite the front wall with an opening in the
- Front wall protruding indentation includes. The central
- Air outlet opening is formed in a bottom portion of the recess.
- the gas outlet opening is formed by an annular gap arranged between the indentation and the opening of the front wall.
- Air outlet opening of the mixture formation provided.
- a second primary air flow is generated on the outside of the tubular fuel gas flow.
- This embodiment of the injector results in a particularly simple construction of the gas distribution device, which is characterized by simple clamping and
- the front wall and the rear wall of the distributor housing are formed in the form of two plates, which are connected to each other directly or by means of at least one arranged between the plates connecting element.
- the indentation of the rear wall has a front section extending beyond the plane of the front wall and which is at least partially enclosed by a collar bounding the opening of the front wall.
- a collar bounding the opening of the front wall This improves the aerodynamic properties of the coaxial injector.
- the tubular gas flow can be homogenized in the flow-forming region formed between the outside of the indentation and the inside of the collar.
- a particularly homogeneous second primary air flow can be generated by the collar.
- the Koaxialinjektor is circular with a circular air outlet opening and a circular air outlet opening annularly formed gas outlet opening.
- the circular design of the Koaxialinjektors allows a particularly dense arrangement of adjacent Koaxialinjektoren.
- the Koaxialinjektor cross-shaped with a cross-shaped air outlet opening and one
- the mixing of the two gaseous components can be further improved.
- At least one multi-coaxial injector comprising a plurality of coaxial injectors is provided.
- Coaxial injectors of the multicoaxial injector are arranged close to each other in such a way that a reciprocal interaction of the air-gas flows generated by them results.
- Multikoaxialinjektors can achieve a mutual influence of adjacent Koaxialinjektoren and thus the mixing and
- the multicoaxial injector comprises a cross-shaped central coaxial injector and a plurality of circular peripheral coaxial injectors respectively arranged between two arms of the cross-shaped coaxial injector. This special arrangement allows efficient mixing of the gaseous components with low space requirement.
- the multicoaxial injector comprises three circular coaxial injectors arranged in the form of an isosceles triangle. Also, this special design of the multicoaxial injector allows a particularly efficient mixing or homogenization of the air-gas mixture at the same time low
- FIG. 1 shows a perspective view of a conventional gas distributor device with a distributor housing and a plurality of injectors in the form of gas nozzles
- Fig. 2 is a perspective view of a gas distributor apparatus for an atmospheric gas burner according to the invention with a plurality of coaxially formed injectors;
- FIG. 3 shows a sectional view of the gas distributor device from FIG. 2 along a sectional plane A-A for clarifying the operating principle of a coaxial injector;
- FIG. 4 is a front elevational view of the gas distributor apparatus of FIG. 2; FIG.
- Fig. 6 is a plan view of a gas distributor device having a plurality of multi-coaxial injectors each formed of three coaxial injectors;
- FIG. 7 shows a sectional view of the injector arrangement from FIG. 6 along the sectional plane A-A;
- FIG. 8 shows the gas distributor device from FIG. 7 in an exploded view
- FIG. 9 shows a further gas distributor device with a plurality of each of a central cross-shaped Koaxialinjektor and a total of four surrounding the cross-shaped Koaxialinjektor circular Koaxialinjektoren.
- FIG. 10 shows a sectional view of the coaxial device from FIG. 9 along the sectional plane A-A;
- FIG. 1 shows a conventional gas distributor apparatus 100 for an atmospheric gas burner.
- the gas distributor device 100 comprises a distributor housing 110 formed in the form of an elongate bar and a total of twelve arranged in series on the front of the housing
- Gas injectors 201 are in the form of simple nozzles for Generating a defined fuel gas jet within the combustion chamber.
- the injectors 201 typically have circular gas outlet openings whose diameter has been selected as a function of the gas pressure and the desired flow rate.
- the fuel gas flowing out of an injector 201 in the form of a jet having a circular diameter entrains the surrounding air and, as a result, generates a primary air flow surrounding the fuel gas jet. Due to the interactions of the two flows, downstream of the fuel gas is mixed with the primary air, whereby a combustible air-gas mixture is generated.
- Fuel gas flow determines which due to the small diameter of the gas outlet opening in this conventional injector concept is relatively low.
- the distributor housing 1 10 of the gas burner consists in the present case of a casting, in which the injectors 201 are screwed by means of screw thread. Due to the complex molded part, the production of such a gas distribution device is relatively complex.
- FIG. 2 shows a possible embodiment of the gas distributor device 100 according to the invention for an atmospheric gas burner.
- the gas distributor device 100 comprises a distributor housing 1 10 which is preferably designed in the form of an elongated beam and has twelve coaxial injectors 150 arranged on the front side 11 of the distributor housing 110 along the housing length.
- the distributor housing 110 in the present example consists of two plate-shaped metal sheets 120, 130 formed, which form the front and rear walls of the distributor housing 1 10.
- the plate-shaped sheets 120, 130 are connected to each other in the present example by means of a connecting element 140.
- the connecting element 140 which may also be formed from a metal sheet, is annular and connects the front wall 120 and the rear wall 130 in their outer border areas with each other.
- the connection can be made by conventional methods, such as welding, soldering, gluing, folding or the like.
- the waiver of a corresponding connecting element 140 is possible, in which case at least one of the sheets 120, 130 is formed trough-shaped (not shown here).
- a formed in this example in the front wall opening 180 serves as a gas supply port for supplying a fuel gas into the interior of the distributor housing 1 10.
- the fuel gas is the individual
- the coaxial injectors 150 each comprise one in the form of an annular gap and one with the
- Air outlet 151 coaxially comprehensive gas outlet 152.
- the Koaxialinjektoren 150 are each formed by the interaction of structures of the front and rear walls 120, 130 of the distributor housing 1 10.
- the interaction of the front and rear walls 120, 130 becomes clear from FIG. 3, which shows a sectional view through one of the coaxial injectors 150 shown in FIG.
- FIG. 3 shows a sectional view through one of the coaxial injectors 150 shown in FIG.
- the front and the rear wall 120, 130 of the distributor housing 1 10 are formed in the form of two mutually parallel and by means of a circumferential connecting element 140 interconnected metal plates.
- the front wall has an opening 121.
- the rear wall 130 in this area is in the housing interior
- the indentation 131 tapers conically, wherein a front portion 132 of the indentation projects beyond the plane of the front wall 120.
- an opening 151 is formed, which serves as a central air outlet opening. The diameter of the
- Opening 121 and the outer diameter of the indentation 131 in the region of the front wall 120 are matched to one another in such a way that an annular gap 152 with a defined gap width, serving as a gas outlet opening, results between the indentation 131 and the front wall 120.
- the collar 122 serves for better beam shaping of the coaxial fuel gas jet indicated in FIG. 3 by means of the arrows 153.
- the fuel gas jet 153 induces in a known manner an outer primary air flow 154, which transports primary air from the environment of the Koaxialinjektors 150.
- the fuel gas jet 153 which leaves the coaxial gas outlet opening 152 in a tubular manner, induces a central fuel gas flow 155, which transports ambient air from the housing rear side 12. Due to the coaxial construction of the
- Injector 150 therefore results in a particularly large contact area between the fuel gas flow and the two primary air streams 154, 155.
- there is a particularly good mixing of the fuel gas with the combustion air wherein the coaxial design caused narrow width of the fuel gas flow mixing with the two sides available primary air even further improved.
- a particularly homogeneous air-gas mixture with a high proportion of air lean mixture, air ratio L> 1 and thus a significant reduction of nitrogen oxide thermal NO x formation can be achieved with the help of the coaxial injector.
- FIG. 4 shows a front view of the gas distributor device 100 of Figure 2.
- Air outlet 151 and the coaxial for this gas outlet opening 152 can be seen. Furthermore, the sectional plane of the sectional view of Figure 3 is indicated.
- FIG. 5 shows an exploded view of the coaxial gas distributor device 100 from FIGS. 2 to 4.
- the distributor housing 110 is composed of only three elements.
- the front wall 120 and the rear wall 130 are formed in the form of two plates, which are connected to each other by means of an annular connecting element 140.
- the rear wall 130 includes tapered indentations 131, which are provided with a central hole 134.
- an elongated recess 170 is provided, which forms part of the internal gas distribution channel.
- the front wall 120 to the Indentations 131 corresponding openings 121 provided, which are included in the present case by means of a collar 122.
- the collar 122 is formed in the form of a conically tapering bulge.
- the front and rear walls 120, 130 are preferably made by means of a suitable forming process, such as deep drawing, stamping, collar pulling, etc. from a suitable sheet. In principle, however, other materials for the construction of the distributor housing 120 are possible.
- coaxial injectors on the gas distribution device 100 may vary.
- circular Koaxialinjektoren basically coaxial injectors with an elongated or cross-shaped contour possible.
- multicoaxial injectors made up of a plurality of mutually influencing coaxial injectors.
- a gas distributor device 100 having a plurality of such multicoaxial injectors is shown in FIG. The figure shows a front view of the
- Gas distributor device 100 with a total of twelve multicoaxial injectors 160.
- Each of the multicoaxial injectors 160 each comprises three small coaxial injectors 150i, 1502, 1503, which are substantially similar to the coaxial injectors of the gas distributor devices shown in FIGS. Due to the immediate vicinity of the coaxial injectors 150i, 1502, 1503, during operation of the gas distributor device 150, the air and gas flows generated from the individual coaxial injectors interact with one another. As a result, additional turbulence between the gas and
- FIG. 7 shows a sectional illustration through a multicoaxial injector 160 from FIG. 6 along the sectional plane A-A. It can be seen here that the individual coaxial injectors 150i, 1502, 1503 have essentially the same structure as the coaxial injector shown in FIG.
- FIG. 8 further shows an exploded view of the coaxial injector from FIG. 6. It can be seen that the distributor housing 110 are formed analogously to the distributor housing shown in FIG. 5 from two plates 120, 130 which are interconnected by means of a connecting element 140.
- a multicoaxial injector can in principle also be constructed from differently shaped coaxial injectors.
- FIG. 9 shows an example
- Embodiment of the gas distributor device 100 with a total of twelve
- Multi-coaxial injectors 160 each consisting of a central coaxial injector
- the central Koaxialinjektor 150, 4 has a cross-shaped air outlet opening 151, which is formed in a bottom region of a likewise cross-shaped recess of the rear wall.
- the cruciform indentation projects into an opening 121 of the front wall 120 which is likewise of a cross-shaped design. This results in one of the cross-shaped contour of the recess of the rear wall following annularly closed gap, which is thus also formed cross-shaped.
- the coaxial injectors 150 4 , 150 s, 150 e, 15 U 7, 150 s of the gas distributor device 100 shown in FIG. 9 have a flat design.
- FIG. 10 shows a sectional illustration through a multicoaxial injector 160 from FIG. 9 along the sectional plane AA.
- the depth of the recesses 131 of the individual injectors 150 4 , 150 s, 1507 of the multicoaxial injector 160 is selected to be substantially flush with the front wall 120.
- the resulting flat construction of the distributor housing 110 allows the use of the gas distributor device 100 in a gas burner with a small installation space.
- FIG. 11 shows an exploded view of the distributor housing 110 of FIGS. 9 and 10. As can be seen, the openings 121 in the front wall 120 have no collars or bulges.
- the coaxial injector concept allows the formation of flow structures which allow mixing of the gaseous components into the gas
- the gas distributor device can also be formed of a material other than sheet metal, such as e.g. Plastic.
- the material other than sheet metal such as e.g. Plastic.
- Gas distribution device can also be realized in the form of a component formed from more than two or three parts.
- the arrangement of the Koaxialinjektoren or the Multikoaxialinjektoren in several rows is basically possible.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT108191A PT108191A (pt) | 2015-02-04 | 2015-02-04 | Dispositivo de distribuição de gás para um queimador de gás atmosférico |
PCT/EP2016/052281 WO2016124641A1 (de) | 2015-02-04 | 2016-02-03 | Gasverteilervorrichtung für einen atmosphärischen gasbrenner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3254027A1 true EP3254027A1 (de) | 2017-12-13 |
EP3254027B1 EP3254027B1 (de) | 2019-09-04 |
Family
ID=55349803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16703943.7A Active EP3254027B1 (de) | 2015-02-04 | 2016-02-03 | Gasverteilervorrichtung für einen atmosphärischen gasbrenner |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3254027B1 (de) |
ES (1) | ES2760325T3 (de) |
MX (1) | MX2017009905A (de) |
PT (2) | PT108191A (de) |
WO (1) | WO2016124641A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023186898A1 (en) * | 2022-03-28 | 2023-10-05 | Orkli S. Coop | Gas burner |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018005192B3 (de) | 2018-07-02 | 2019-12-05 | Truma Gerätetechnik GmbH & Co. KG | Brennervorrichtung |
ES2776748A1 (es) * | 2019-01-30 | 2020-07-31 | Bsh Electrodomesticos Espana Sa | Quemador de gas para una encimera de gas |
EP4163544A1 (de) * | 2021-10-07 | 2023-04-12 | BDR Thermea Group B.V. | Brennerdeck und verfahren zur herstellung desselben |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190905568A (en) * | 1908-03-09 | Antony Henri Meker Georges | Improvements in or relating to Burners for Producer or like Gas. | |
FR1588288A (de) * | 1968-10-01 | 1970-04-10 | ||
US4874310A (en) * | 1988-02-25 | 1989-10-17 | Selas Corporation Of America | Low NOX burner |
DE4003141A1 (de) * | 1990-02-02 | 1991-08-08 | Helmut Rohde | Verfahren zum betreiben eines atmosphaerischen brenners sowie atmosphaerischer brenner |
DE19822336C2 (de) * | 1998-05-19 | 2001-08-16 | Bosch Gmbh Robert | Vorrichtung zum Betreiben eines atmosphärischen, insbesondere vollvormischenden Gasbrenners |
DE29813495U1 (de) * | 1998-07-29 | 1998-10-29 | Buderus Heiztechnik Gmbh, 35576 Wetzlar | Gasdüse |
IT1307513B1 (it) * | 1999-11-15 | 2001-11-06 | Ind Polidoro A S P A | Bruciatore di gas combustibile con emissioni a basso tenore di nox |
DE20016808U1 (de) * | 2000-09-29 | 2000-12-21 | Viessmann Werke Kg | Gasverteiler |
JP2004156895A (ja) * | 2002-10-16 | 2004-06-03 | Matsushita Electric Ind Co Ltd | バーナ、水素発生装置、及び、燃料電池発電システム |
-
2015
- 2015-02-04 PT PT108191A patent/PT108191A/pt unknown
-
2016
- 2016-02-03 PT PT167039437T patent/PT3254027T/pt unknown
- 2016-02-03 ES ES16703943T patent/ES2760325T3/es active Active
- 2016-02-03 MX MX2017009905A patent/MX2017009905A/es unknown
- 2016-02-03 EP EP16703943.7A patent/EP3254027B1/de active Active
- 2016-02-03 WO PCT/EP2016/052281 patent/WO2016124641A1/de active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023186898A1 (en) * | 2022-03-28 | 2023-10-05 | Orkli S. Coop | Gas burner |
Also Published As
Publication number | Publication date |
---|---|
PT3254027T (pt) | 2019-10-28 |
ES2760325T3 (es) | 2020-05-13 |
WO2016124641A1 (de) | 2016-08-11 |
MX2017009905A (es) | 2019-01-24 |
EP3254027B1 (de) | 2019-09-04 |
PT108191A (pt) | 2016-08-04 |
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