EP0953804A1 - Flammstreifen für atmospherischen und vormischenden Brenner - Google Patents

Flammstreifen für atmospherischen und vormischenden Brenner Download PDF

Info

Publication number: EP0953804A1
Authority: EP; European Patent Office
Prior art keywords: slots; flame; axis; offset; length
Prior art date: 1998-04-28
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

EP99401012A

Other languages

English (en)

French (fr)

Other versions

EP0953804B1 (de

Inventor

Lila Menari

Stephen Daemon Andrews

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.)

Saunier Duval Eau Chaude Chauffage SDECC SA

Original Assignee

Saunier Duval Eau Chaude Chauffage SDECC SA

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.)

1998-04-28

Filing date

1999-04-26

Publication date

1999-11-03

1999-04-26 Application filed by Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA

1999-11-03 Publication of EP0953804A1 publication Critical patent/EP0953804A1/de

2003-06-04 Application granted granted Critical

2003-06-04 Publication of EP0953804B1 publication Critical patent/EP0953804B1/de

2019-04-26 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
- F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits

Definitions

the invention relates to a gas burner atmospheric and premixed and concerns more particularly the distribution of the outlet orifices of flame on the burner rail.
Gas burners in particular for bath heaters or boilers usually consist of two half-shells stamped lines delimiting the air-gas mixing chamber, the shells being assembled to form an orifice longitudinal, which is capped with a sheet metal grid provided a plurality of gas outlet ports.
the ramps of burner thus produced are generally placed side by side side and parallel to form a unit capable of operate with different kinds of gas.
a conventional embodiment of a burner ramp consists in piercing the flame outlet grid with a succession of orifices in the form of rectangular slots which are aligned close to one another.
the length of the strip covered by the orifices defines the total length of the flame obtained.
the surface covered by the flame obviously corresponds to the product of this total length by the width which is none other than the length of a slit.
the flame is thus concentrated and the flame front is delimited by the perimeter of the slots thus aligned.
the contact surface between the air and the flame corresponds to this perimeter, which limits the entry of cooling air; therefore the sheet metal parts adjacent to the slots are brought to high temperature and subjected to thermomechanical stresses; the production of No x linked to the flame temperature is therefore not negligible.
the invention provides a new solution in the arrangement of the flame exit orifices, which allows an increase in the flame front at the same time as a reduction in its thickness, and which goes in the direction of improving stability. flame, better cooling, and reduced emission of No x .
the subject of the invention is therefore an exit ramp from flames for atmospheric and premix gas burner comprising a sheet metal grid pierced with a succession of rectangular slots, ramp along which the slots are distributed on either side of the longitudinal axis of the grid and form a sinusoid extending over the entire length of the grid, which increases the length of the front of flames.
the slots are spaced apart others by a constant distance along the axis of the wire rack.
the slots are identical, each of them being offset from its immediate neighbor.
Figure 1 a plan view of a burner rail.
FIG 2 an enlarged plan view of the ramp slots as shown in Figure 1.
Figures 3 and 4 plan views of a variant of burner rail respectively an overview and a view on a larger scale.
FIGS 5 and 6 similar views of another burner rail variant.
FIG. 1 a flame outlet grid formed of a strip 1 made of sheet metal from which are cut slots 2 which are distributed on either side of the longitudinal axis 3 of the grid, and arranged in lace.
Figure 2 shows these slots 2 of general rectangular shape. The slots are identical and spaced from each other by a constant distance e along axis 3. On the other hand, perpendicular to this axis, each slot is offset from its neighbor immediate, with half a slot length l / 2. This half length l / 2 is preferable but not compulsory. Through example it could be variable between l / 5 and l / 0.5.
the ends of the slots form thus a sinusoid on either side of axis 3 as it appears on the left side of Figure 1, this sinusoid extending over the entire length of the grid.
the slots are sized to prevent returns from flame and peeling or blowing. Lag thus introduced between the slots, relative to a conventional alignment, increases the length of the front flame, since this corresponds to the sinusoid of slots.
This developed perimeter can reach, or even exceed three times the length of the flame front by one traditional grid which makes it possible to obtain a rate high primary air. Similarly, the area covered by the flame is seriously increased, up to six times. Through against the thickness of the flame is reduced by 70%.
the flame is thus "stretched" along a path sinusoidal having greater contact with the atmosphere surrounding which allows greater access to air secondary, promoting combustion as well as cooling.
the fact that the flame is shorter allows to place the burner closer to the heat exchanger heat which increases its yield and makes it possible to obtain a more compact device.
the products of hot combustion are cooled and vented over quickly. Also because there are more surfaces of contact between each slot and the metal part neighbor, the temperature distribution and the burner cooling are better. So we have a bearable heating of the metal constituting the outputs of flame. Since there are fewer constraints thermomechanical, the life of the burner is increased.
the slots 2 are of different length. There are slots having a length L and slots shorter of length l, the latter being centered on axis 3. the longer slots are grouped by pair, alternating with the short ones and they are shifted alternately on either side of the axis. The ends of the slots staggered along the axis form also a sinusoid, but less regular than that of the figure 1.
the burner arm made with an outlet grid of flame of this type consists of a shaped shell classic whose dimensions have been optimized for obtain a primary aeration rate close to the stoichiometry and a uniform distribution of the mixture air / gas outlet.
the flames obtained have the main characteristic of being arranged in "lace" and thus offer the maximum of contact surface with surrounding air.

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Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Gas Burners (AREA)

EP99401012A 1998-04-28 1999-04-26 Flammstreifen für atmospherischen und vormischenden Brenner Expired - Lifetime EP0953804B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR9805295		1998-04-28
FR9805295A FR2777978B1 (fr)	1998-04-28	1998-04-28	Rampe de sortie de flammes pour bruleur a gaz atmospherique et a premelange

Publications (2)

Publication Number	Publication Date
EP0953804A1 true EP0953804A1 (de)	1999-11-03
EP0953804B1 EP0953804B1 (de)	2003-06-04

Family

ID=9525740

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP99401012A Expired - Lifetime EP0953804B1 (de)	1998-04-28	1999-04-26	Flammstreifen für atmospherischen und vormischenden Brenner

Country Status (6)

Country	Link
US (1)	US6123543A (de)
EP (1)	EP0953804B1 (de)
JP (1)	JPH11337017A (de)
AT (1)	ATE242457T1 (de)
DE (1)	DE69908486D1 (de)
FR (1)	FR2777978B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10053877B4 (de) *	2000-10-31	2004-10-07	Robert Bosch Gmbh	Brennerplatte für einen Gasbrenner
DE102022212226A1 (de)	2022-11-17	2024-05-23	Robert Bosch Gesellschaft mit beschränkter Haftung	Brenner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1816948A1 (de) *	1968-12-24	1970-06-25	Vaillant Joh Kg	Bunsenbrenner
FR2319080A1 (fr) *	1975-07-21	1977-02-18	Remeha Fabrieken Bv	Bruleur a gaz atmospherique
DE9202096U1 (de) *	1991-02-22	1992-04-02	Joh. Vaillant Gmbh U. Co, 5630 Remscheid	Brenner
EP0773404A2 (de) *	1995-11-09	1997-05-14	Robert Bosch Gmbh	Brenner

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2644515A (en) *	1947-12-22	1953-07-07	Rheem Mfg Co	Gas burner head with secondary air feed grooves
GB1255602A (en) *	1967-09-30	1971-12-01	Sutherland Ltd Ag	Gas burners
US3780954A (en) *	1970-05-15	1973-12-25	Robertshaw Controls Co	Burner construction
DE2132968A1 (de) *	1970-07-04	1972-01-13	Guiseppe Fogliani	Gasbrenner
GB1414979A (en) *	1972-12-07	1975-11-26	Robinson D H	Gas burners
GB1473959A (en) *	1975-08-14	1977-05-18	Aeromatic Co Ltd	Natural gas burners
DE2629988A1 (de) *	1976-07-03	1978-01-05	Haller Meurer Werke Ag	Kastenfoermiges brennerrohr fuer allgasbrenner von gasheizgeraeten
DE2966549D1 (en) *	1978-07-28	1984-02-23	Aldo Polidoro	Atmospheric gas burner with groups of vents for the passage of the mixture of combustible gas and combustion air
US5215457A (en) *	1990-01-24	1993-06-01	Worgas Bruciatori S.R.L.	Combustion process and gas burner with low nox, co emissions

1998
- 1998-04-28 FR FR9805295A patent/FR2777978B1/fr not_active Expired - Fee Related
1999
- 1999-04-21 US US09/295,097 patent/US6123543A/en not_active Expired - Fee Related
- 1999-04-26 DE DE69908486T patent/DE69908486D1/de not_active Expired - Lifetime
- 1999-04-26 AT AT99401012T patent/ATE242457T1/de not_active IP Right Cessation
- 1999-04-26 EP EP99401012A patent/EP0953804B1/de not_active Expired - Lifetime
- 1999-04-28 JP JP11122276A patent/JPH11337017A/ja active Pending

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1816948A1 (de) *	1968-12-24	1970-06-25	Vaillant Joh Kg	Bunsenbrenner
FR2319080A1 (fr) *	1975-07-21	1977-02-18	Remeha Fabrieken Bv	Bruleur a gaz atmospherique
DE9202096U1 (de) *	1991-02-22	1992-04-02	Joh. Vaillant Gmbh U. Co, 5630 Remscheid	Brenner
EP0773404A2 (de) *	1995-11-09	1997-05-14	Robert Bosch Gmbh	Brenner

Also Published As

Publication number	Publication date
JPH11337017A (ja)	1999-12-10
ATE242457T1 (de)	2003-06-15
EP0953804B1 (de)	2003-06-04
DE69908486D1 (de)	2003-07-10
FR2777978B1 (fr)	2000-06-16
US6123543A (en)	2000-09-26
FR2777978A1 (fr)	1999-10-29

Publication	Publication Date	Title
EP2870410B1 (de)	2017-08-23	Gasbrenner mit oberflächenverbrennung
US5215457A (en)	1993-06-01	Combustion process and gas burner with low nox, co emissions
EP0674135A1 (de)	1995-09-27	Gasbrenner für Industrieöfen
EP0953804B1 (de)	2003-06-04	Flammstreifen für atmospherischen und vormischenden Brenner
FR2511478A1 (fr)	1983-02-18	Bruleur a melange de gaz
FR2684747A3 (en)	1993-06-11	Gas burner of the type with spray pipes
WO2008003869A1 (fr)	2008-01-10	Four tunnel notamment pour biscuiterie
EP1030107B1 (de)	2004-04-28	Vormischbrenner
EP3997384A1 (de)	2022-05-18	Modularer brenner und ofen mit diesem brenner
FR2508618A1 (fr)	1982-12-31	Procede et dispositif pour etablir un echange intense de chaleur et de matiere entre un gaz et un corps oblong, notamment a des fins de prechauffage ou de sechage de barres metalliques
EP0778444B1 (de)	2002-07-17	Flammenkühler für Brenner
EP1885519A1 (de)	2008-02-13	Reflow-ofen mit getrennten, abwechselnden blasdüsen und sauglöchern
KR20040049056A (ko)	2004-06-11	가스복사 버너의 혼합관에 있어서 연료와 공기의혼합촉진장치
EP0089924B1 (de)	1985-12-18	Gasbrenner
EP3569927B1 (de)	2023-07-26	Brennervorrichtung mit gepulster luft/gas-vormischung
FR2774745A1 (fr)	1999-08-13	Procede de chauffage de produits dans une enceinte et bruleur pour la mise en oeuvre de ce procede
EP0679838B1 (de)	1998-03-04	Verbesserungen an Gasbrennern
EP0631091A1 (de)	1994-12-28	Gasbrenner mit niedrigem NOx-Ausstoss
EP0223634B1 (de)	1989-07-19	Gasbrenner der Gas/Luftvormischungsbauart
EP0810404A2 (de)	1997-12-03	Brenner mit vollständiger Brennstoff/Luft-Vormischung
JP2649496B2 (ja)	1997-09-03	赤外線バーナ
WO1989001599A1 (fr)	1989-02-23	Echangeur de chaleur a impact de jet
EP1050712B1 (de)	2004-02-11	Gekühlter und Vollvormischender Gasbrenner
KR0131394Y1 (ko)	1998-12-15	가스렌지의 불옮김장치
JP2002206711A (ja)	2002-07-26	コンロバーナ

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