EP0271500B1 - Bruleur a gaz de premelange - Google Patents
Bruleur a gaz de premelange Download PDFInfo
- Publication number
- EP0271500B1 EP0271500B1 EP87902439A EP87902439A EP0271500B1 EP 0271500 B1 EP0271500 B1 EP 0271500B1 EP 87902439 A EP87902439 A EP 87902439A EP 87902439 A EP87902439 A EP 87902439A EP 0271500 B1 EP0271500 B1 EP 0271500B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- burner
- premixing
- auxiliary
- tubes
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
-
- 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
Definitions
- Premix gas burners are known, for example from DE-A-3022 763.
- the atmosphere is artificially depleted in its oxygen content by a sub-stoichiometric, non-ignitable addition of fresh gas to the secondary air he follows. This is done by tapping gas from the gas supply line and blowing it out through nozzles or slots into areas of the burner through which the secondary air passes.
- FIG. 2 shows, one can do without the secondary line 3 and the distribution pipes 4 by simply providing outlet openings 11 on the underside 10 of the combustion tube 1, from which the fuel gas enriched with air emerges and along the periphery of the burner tube upwards into the area the flame feet strokes.
- FIG. 4 shows a grate burner made up of several burner chambers with three burner chambers 12 between which are distances 13 through which the secondary air sweeps from bottom to top.
- Auxiliary gas nozzles 5 are present between these main gas nozzles 15 and blow fuel gas from the fuel gas feed line 21 into the intermediate spaces 13.
- this fuel gas will mix with the secondary air and lead to the previously mentioned oxygen-depleted atmosphere of the secondary air.
- FIG. 5 shows a burner similar to FIG. 4, in which three burner tubes 22 are shown as a cylindrical body in a view of the jacket. These burner tubes 22 with horizontal axes analogous to that shown in FIG. 1 have a large number of fuel gas air mixture outlet openings 23 in their upper half region. Gas is blown into the interior of the burner tubes 22 via gas nozzles 15, specifically into the injector channel 16 already mentioned. Primary air is entrained through the gap 17. Auxiliary gas channels 24 branch off from the gas line 21 and extend parallel and at a distance from the burner tubes 22. They have auxiliary gas outlet openings 20 which enrich the secondary air rising between the burner tubes 22 with fuel gas.
- the openings 20 can be designed as shown enlarged in FIG.
- the exemplary embodiment in FIG. 7 is again a boiler burner with individual burner tubes 1 lying next to one another.
- An auxiliary burner tube 25 is arranged between two burner tubes 1 and touches the two burner tubes 1 with its outer circumference.
- the interior 26 of the auxiliary burner tube 25 is fed with a fuel gas / air mixture, for example via a burner nozzle.
- the fuel gas air mixture now representing secondary air for the burner tubes 1 emerges from the interior 26 of the auxiliary burner tube 25 and represents the oxygen-depleted atmosphere of the secondary air already described for the actual main burner tubes 1. It is essential that the secondary air-gas mixture must not be ignitable, that is, the proportion of the fuel gas mixed with the secondary air is so small that this mixture is not ignitable.
- FIG. 8 shows how the three tubes of FIG. 7 are fed. Fuel gas is blown into the injector tubes 16 from the common fuel gas line 21 through three gas nozzles, two main gas nozzles 15 and an auxiliary gas nozzle 5, of which the middle one only serves to enrich the fuel gas To form secondary air for the flames of the two outer main pipes.
- sieves 28 are provided where the mixture has access to the flames of the main burner.
- the sieves consist of metal wire mesh. The idea of these screens 28 can also be applied to the other burner tube constructions.
- the exemplary embodiment according to FIG. 10 shows a burner working particularly advantageously.
- one Upper plate 30 covering the entire burner area is provided, which has all fuel mixture outlet openings, so that flames form above the plate 30.
- Below the plate 30 there is an intermediate space 31 which is delimited at the bottom by a lower plate 32.
- Sections 34 and 35 are formed in any number by retracted intermediate walls 33 between the upper and lower plates 32. All sections 34 are each assigned an injector tube 36, into which fuel gas is blown through a nozzle 15, entraining primary air.
- the sections 35 are assigned another injector tube 36, into which 5 fuel gas is blown in from an auxiliary gas nozzle.
- the sections 35 are provided on both sides of two sections 34 and serve to supply the secondary air / fuel gas mixture for oxygen depletion to the main flames of the burner occurring at the top of the sections 34.
- All sections 34 are in the middle of the burner.
- the burners according to FIG. 10 can have almost any length or width extension. They can be polygonal or round in cross-section. It is only essential that each main burner section 34 is surrounded by a secondary air supply section 35, and as far as possible on all sides.
- the invention has the advantage that the ratio of the admixed secondary air to the fuel gas mixture (primary air and gas) remains largely the same both in the full load and in the partial load ratio. This results in a largely constant efficiency or one in the partial load range of that of the Full load range not significantly different combustion quality. This allows the combustion chamber to be closed as much as possible.
- Figures 12 and 13 show an application of the invention also on a gas forced draft burner, since the previous exemplary embodiments have all referred to atmospheric burners.
- FIG. 12 shows a first embodiment of a forced draft burner which has a flame tube 50 which is attached to a housing 51.
- the latter has an air inlet 52 to which air is supplied from a blower, not shown.
- the interior of the housing 51 or of the flame tube 50 is penetrated by a gas supply tube 53, which extends via a solenoid valve is fed a gas network not shown.
- the flame-side part 54 of the flame tube 50 is provided with a baffle plate 55 which has air passage slots 56, via which the interior 62 of the housing 51 communicates with the interior of the end 54 of the flame tube.
- the baffle plate 55 is penetrated by a nozzle head 57, the main gas nozzles 58 of which are arranged radially on a jacket of the nozzle head 57.
- a slot 56 is assigned to each main gas nozzle 57.
- auxiliary gas nozzles 59 are arranged on the jacket of the gas supply pipe 53, via which gas emerges into the interior 62, namely upstream of the baffle plate 55 described design rule set. Air for the burner is thus mixed with natural gas according to the principles already explained.
- the flame tube 50 has a tube insert 60, through which an annular secondary air duct 61 is created.
- the auxiliary gas nozzles 59 are designed or arranged such that they can only blow the auxiliary gas into the secondary air ring duct. The primary air remains unaffected by the auxiliary gas.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Claims (22)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87902439T ATE62539T1 (de) | 1986-05-13 | 1987-05-13 | Vormischgasbrenner. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3616015 | 1986-05-13 | ||
DE3616015 | 1986-05-13 | ||
DE3630281 | 1986-09-05 | ||
DE3630281 | 1986-09-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0271500A1 EP0271500A1 (fr) | 1988-06-22 |
EP0271500B1 true EP0271500B1 (fr) | 1991-04-10 |
Family
ID=25843714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87902439A Expired - Lifetime EP0271500B1 (fr) | 1986-05-13 | 1987-05-13 | Bruleur a gaz de premelange |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0271500B1 (fr) |
DE (1) | DE3769291D1 (fr) |
WO (1) | WO1987006998A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0331037B1 (fr) * | 1988-02-27 | 1995-01-04 | Osaka Gas Co., Ltd. | Brûleur à gaz |
GB8824575D0 (en) * | 1988-10-20 | 1988-11-23 | Airoil Flaregas Ltd | Improvements in burner assemblies |
JPH03140706A (ja) * | 1989-10-25 | 1991-06-14 | Tokyo Gas Co Ltd | 窒素酸化物低発生バーナ |
EP0521568B1 (fr) * | 1991-07-05 | 1996-09-18 | Tokyo Gas Co., Ltd. | Brûleur à gaz à faible taux de NOx |
EP0534554B1 (fr) * | 1991-09-24 | 1997-03-26 | Tokyo Gas Co., Ltd. | Brûleur à faible génération des oxides d'azote et petit appareil de combustion |
CN110566947A (zh) * | 2019-09-16 | 2019-12-13 | 浙江力聚热水机有限公司 | 一种超低氮预混燃气燃烧器及其燃烧方法 |
CN111578283A (zh) * | 2020-05-06 | 2020-08-25 | 郑州博纳热能设备有限公司 | 一种低氮氧化物排放的天然气燃烧器 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2142014A (en) * | 1937-12-02 | 1938-12-27 | John S Zink | Gas burning means |
US2986207A (en) * | 1955-08-15 | 1961-05-30 | Clifford A Scogin | Gas burner |
DE1629968A1 (de) * | 1967-02-22 | 1971-04-01 | Franz Wonisch | Brenner fuer verschiedene Gasarten |
FR2050942A5 (fr) * | 1969-06-30 | 1971-04-02 | Jauzac Serge | |
CH622081A5 (fr) * | 1977-06-17 | 1981-03-13 | Sulzer Ag | |
GB1565247A (en) * | 1978-01-25 | 1980-04-16 | Cromartie Kilns Ltd | Burners for kilns |
DE3022763C2 (de) * | 1980-06-14 | 1983-05-19 | Joh. Vaillant Gmbh U. Co, 5630 Remscheid | Reihenbrenner für ein gasbeheiztes Gerät |
FR2569825B1 (fr) * | 1984-09-04 | 1988-12-09 | Totalgaz Cie Fse | Bruleur a melange prealable integre et a flamme pilote integree |
DE8503838U1 (de) * | 1985-02-08 | 1986-02-13 | Joh. Vaillant Gmbh U. Co, 5630 Remscheid | Reihenbrenner für ein gasbeheiztes Gerät |
DE8526226U1 (de) * | 1985-09-13 | 1986-01-02 | Ruhrgas Ag, 4300 Essen | Heizvorrichtung |
-
1987
- 1987-05-13 WO PCT/DE1987/000223 patent/WO1987006998A1/fr active IP Right Grant
- 1987-05-13 EP EP87902439A patent/EP0271500B1/fr not_active Expired - Lifetime
- 1987-05-13 DE DE8787902439T patent/DE3769291D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE3769291D1 (de) | 1991-05-16 |
WO1987006998A1 (fr) | 1987-11-19 |
EP0271500A1 (fr) | 1988-06-22 |
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