EP0006048B1 - Burner for a gas torch - Google Patents

Burner for a gas torch Download PDF

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Publication number
EP0006048B1
EP0006048B1 EP79400319A EP79400319A EP0006048B1 EP 0006048 B1 EP0006048 B1 EP 0006048B1 EP 79400319 A EP79400319 A EP 79400319A EP 79400319 A EP79400319 A EP 79400319A EP 0006048 B1 EP0006048 B1 EP 0006048B1
Authority
EP
European Patent Office
Prior art keywords
burner
grid
section
side walls
chamber
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
Application number
EP79400319A
Other languages
German (de)
French (fr)
Other versions
EP0006048A1 (en
EP0006048B2 (en
Inventor
Claude Courrege
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.)
Rippes SA
Original Assignee
Rippes 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.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9208981&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0006048(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rippes SA filed Critical Rippes SA
Publication of EP0006048A1 publication Critical patent/EP0006048A1/en
Application granted granted Critical
Publication of EP0006048B1 publication Critical patent/EP0006048B1/en
Publication of EP0006048B2 publication Critical patent/EP0006048B2/en
Expired legal-status Critical Current

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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
    • 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
    • F23D14/52—Nozzles for torches; for blow-pipes

Definitions

  • the present invention relates to a burner for a torch with rapid gas flow.
  • burners for gas torches comprising an expansion chamber and a combustion chamber separated by a diffusion grid constituting the nozzle means, allowing the distribution of the gas flow in the combustion chamber where the gas is consumed, this kind of burner during the combustion of the gas has its side walls which are brought to very high temperature not admitting the possibility of gripping by the user. So as to overcome this drawback, some burners are equipped with a secondary surround offset from the side walls and provided with large recesses in order to allow ventilation.
  • the burner which is the subject of the invention comprises two symmetrical half shells fixed to each other having an inlet end which adjusts and fits on the gas flow supply duct and, in its extension, an outlet end , intermediate between the two ends, a diffusion grid constituting the nozzle means is maintained and delimits an expansion chamber and a constituting chamber, the diffusion grid has a U or V-shaped section provided with recesses constituting the means nozzle for the flow and distribution of the gas flow both on its front part of circular or triangular shape and on its side walls, these being offset from the interior walls of the burner in order to create flow paths for the passing gas flow across them, flow taking place outside the combustion chamber by virtue of the conical section extension of said chamber intended to cause an increase in the speed of Lement of the lateral gas flow, the combustion in the gas flow chamber which flows through the front part of the grid, allowing the ignition of the lateral gas flow outside said chamber while promoting the attachment of the flame.
  • the diffusion grid consists of one or two sheets depending on the gas pressures used, the said sheet or sheets are provided with recesses constituting the nozzle means, the surface of the recesses being at least equal to or greater than the outlet section of the combustion chamber, in the case of using low or medium pressure gases, two sheets are used, they are superimposed and joined or not joined at the front and this in order to avoid flashbacks, the section of the recesses of the upper sheet being larger than the section of the recesses in the lower sheet.
  • the burner 1 has two symmetrical half shells 2 and 3 fixed to each other by welding or any other known means, the end 4 is the cylindrical entry intended for s' fit and fit onto the fast-flowing gas flow supply duct, not shown, the end 5 is the outlet.
  • a diffusion grid 6, constituting the nozzle means is maintained, it delimits the expansion chamber 7 and the combustion chamber 8.
  • said grid 6 has a U-shaped section whose front part 11 1 is circular, the perforated sheets 9 and 10 have recesses constituting the nozzle means both on the front part 11 and on the side walls 12, the total surface of the recesses of the upper sheet 9 is approximately 50% greater than the total surface of the recesses of the sheet lower 10 and this in order to avoid flashbacks, the total surface of the recesses in the lower sheet 10 being equal to or greater than the outlet surface 5 of the combustion chamber of the burner 1, the grid 6 can be formed by a single perforated sheet, in particular in the case of the use of high pressure gases, while for medium pressure gases two superimposed and joined perforated sheets can be used.
  • the grate 6 is held in the burner 1 by means of the extensions 13 of the side walls 12 which are inserted in the grooves 14 arranged on the shells 2 and 3, the insertion of the extensions 13 in the grooves 14 determines the position of the side walls 12 of the grid 6 relative to the interior faces of the burner 1 so as to generate corridors 15 for the flow of the gas flow passing through said walls 12, the spacing is such that it only allows the flow of the gas flow but not its combustion this taking place outside the combustion chamber 8, thanks to the extension 16 of the chamber 8 of conical shape which causes an increase in the speed of flow of the lateral gas flow, the combustion in the chamber gas flow flowing at high speed outside the chamber while promoting the attachment of the flame.
  • the expansion chambers 7 and combustion 8 may be of different shapes: in the shape of a parallelepiped, cylindrical, ovoid, etc., the shape of the grids 6 of section in the shape of U or V being adapted to match the shape of said chambers, in particular that of combustion.

Description

La présente invention concerne un brûleur pour chalumeau à écoulement rapide du flux gazeux.The present invention relates to a burner for a torch with rapid gas flow.

On connait des brûleurs pour chalumeau à gaz comportant une chambre de détente et une chambre de combustion séparées par une grille de diffusion constituant les moyens de buse, permettant la répartition du flux gazeux dans la chambre de combustion où le gaz se consume, ce genre de brûleur durant la combustion du gaz a ses parois latérales qui sont portées à très haute température n'admettant pas de possibilité de préhension par l'utilisateur. De sorte à palier à cet inconvénient, certains brûleurs sont équipés d'un entourage secondaire décalé des parois latérales et dotés d'évidements importants afin de permettre un aération.There are known burners for gas torches comprising an expansion chamber and a combustion chamber separated by a diffusion grid constituting the nozzle means, allowing the distribution of the gas flow in the combustion chamber where the gas is consumed, this kind of burner during the combustion of the gas has its side walls which are brought to very high temperature not admitting the possibility of gripping by the user. So as to overcome this drawback, some burners are equipped with a secondary surround offset from the side walls and provided with large recesses in order to allow ventilation.

Le brûleur objet de l'invention comporte deux demies coquilles symétriques fixées l'une à l'autre présentant une extrémité d'entrée s'ajustant et s'emboitant sur le conduit d'amenée du flux gazeux et en son prolongement une extrémité de sortie, intermédiairement entre les deux extrémités une grille de diffusion constituant les moyens de buse est maintenue et délimite une chambre de détente et une chambre de constution, la grille de diffusion présente une section en forme d'U ou V dotée d'évidements constituant les moyens de buse pour l'écoulement et la répartition du flux gazeux tant sur sa partie frontale de forme circulaire ou triangulaire que sur ses parois latérales, celles-ci étant décalées des parois intérieures du brûleur afin de créer des couloirs d'écoulement du flux gazeux passant en leur travers, écoulement ayant lieu jusqu'à l'extérieur de la chambre de combustion grâce au prolongement de section conique de ladite chambre destiné provoquer une augmentation de vitesse d'écoulement du flux gazeux latéral, la combustion dans la chambre du flux gazeux qui s'écoule au travers de la partie frontale de la grille, permettant l'allumage du flux gazeux latéral à l'extérieur de ladite chambre tout en favorisant l'accrochage de la flamme.The burner which is the subject of the invention comprises two symmetrical half shells fixed to each other having an inlet end which adjusts and fits on the gas flow supply duct and, in its extension, an outlet end , intermediate between the two ends, a diffusion grid constituting the nozzle means is maintained and delimits an expansion chamber and a constituting chamber, the diffusion grid has a U or V-shaped section provided with recesses constituting the means nozzle for the flow and distribution of the gas flow both on its front part of circular or triangular shape and on its side walls, these being offset from the interior walls of the burner in order to create flow paths for the passing gas flow across them, flow taking place outside the combustion chamber by virtue of the conical section extension of said chamber intended to cause an increase in the speed of Lement of the lateral gas flow, the combustion in the gas flow chamber which flows through the front part of the grid, allowing the ignition of the lateral gas flow outside said chamber while promoting the attachment of the flame.

La grille de diffusion est constituée par une ou deux tôles selon les pressions de gaz utilisées, la ou lesdites tôles sont dôtées d'évidements constituant les moyens de buse, la surface des évidements étant au moins égale ou supérieure à la section de sortie de la chambre de combustion, dans le cas d'utilisation de gaz à basse ou moyenne pression, deux tôles sont utilisées, elles sont superposées et accolées ou non accolées en partie frontale et ce afin d'éviter les retours de flamme, la section des évidements de la tôle supérieure étant plus importante que la section des évidements de la tôle inférieure.The diffusion grid consists of one or two sheets depending on the gas pressures used, the said sheet or sheets are provided with recesses constituting the nozzle means, the surface of the recesses being at least equal to or greater than the outlet section of the combustion chamber, in the case of using low or medium pressure gases, two sheets are used, they are superimposed and joined or not joined at the front and this in order to avoid flashbacks, the section of the recesses of the upper sheet being larger than the section of the recesses in the lower sheet.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre faite en regard des dessins joints donnés à titre d'exemple non limitatif, où:

  • - la figure 1 est un brûleur de section de sortie rectangulaire,
  • - la figure 2, est un brûleur de section de sortie circulaire,
  • - les figures 3, 4 et 5 représentent en coupe différentes formes de grilles logées dans des brûleurs.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with regard to the accompanying drawings given by way of nonlimiting example, where:
  • FIG. 1 is a burner with a rectangular outlet section,
  • FIG. 2 is a burner with a circular outlet section,
  • - Figures 3, 4 and 5 show in section different forms of grids housed in burners.

Tel que représenté figures 1 à 5, le brûleur 1 comporte deux demies coquilles 2 et 3 symétriques fixées l'une à l'autre par soudure ou tout autre moyen connu, l'extrémité 4 est l'entrée de forme cylindrique destinée à s'emboîter et s'ajuster sur le conduit d'amenée à écoulement rapide du flux gazeux non représenté, l'extrémité 5 est la sortie. Intermédiairement entre l'entrée 4 et sortie 5, une grille de diffusion 6, constituant les moyens de buse, est maintenue, elle délimite la chambre de détente 7 et la chambre de combustion 8. La grille de diffusion 6 représentée figure 3, pour l'utilisation de gaz à faible pression, est constituée par deux tôles perforées 9 et 10 superposées et décalées en partie frontale, ladite grille 6 a une section en forme d'U dont la partie frontale 11 1 est circulaire, les tôles perforées 9 et 10 sont dotées d'évidements constituant les moyens de buse tant sur la partie frontale 11 que sur les parois latérales 12, la surface totale des évidements de la tôle supérieure 9 est supérieure de 50% environ par rapport à la surface totale des évidements de la tôle inférieure 10 et ce de façon à éviter les retours de flamme, la surface totale des évidements de la tôle inférieure 10 étant égale ou supérieure à la surface de sortie 5 de la chambre de combustion du brûleur 1, la grille 6 peut être constituée par une seule tôle perforée, notamment dans le cas d'utilisation de gaz de forte pression, tandis que pour des gaz à moyenne pression deux tôles perforées superposées et accolées peuvent être utilisées.As shown in Figures 1 to 5, the burner 1 has two symmetrical half shells 2 and 3 fixed to each other by welding or any other known means, the end 4 is the cylindrical entry intended for s' fit and fit onto the fast-flowing gas flow supply duct, not shown, the end 5 is the outlet. Intermediate between inlet 4 and outlet 5, a diffusion grid 6, constituting the nozzle means, is maintained, it delimits the expansion chamber 7 and the combustion chamber 8. The diffusion grid 6 shown in FIG. 3, for the use of gas at low pressure, consists of two perforated sheets 9 and 10 superimposed and offset in the front part, said grid 6 has a U-shaped section whose front part 11 1 is circular, the perforated sheets 9 and 10 have recesses constituting the nozzle means both on the front part 11 and on the side walls 12, the total surface of the recesses of the upper sheet 9 is approximately 50% greater than the total surface of the recesses of the sheet lower 10 and this in order to avoid flashbacks, the total surface of the recesses in the lower sheet 10 being equal to or greater than the outlet surface 5 of the combustion chamber of the burner 1, the grid 6 can be formed by a single perforated sheet, in particular in the case of the use of high pressure gases, while for medium pressure gases two superimposed and joined perforated sheets can be used.

La grille 6 est maintenue dans le brûleur 1 au moyen des prolongements 13 des parois latérales 12 qui s'insérent dans les rainures 14 aménagées sur les coquilles 2 et 3, l'insertion des prolongements 13 dans les rainures 14 détermine la position des parois latérales 12 de la grille 6 par rapport aux faces intérieures de brûleur 1 de sorte à engendrer des couloirs 15 pour l'écoulement du flux gazeux passant au travers desdites parois 12, l'écartement est tel qu'il permet seulement l'écoulement du flux gazeux mais non sa combustion celle-ci ayant lieu à l'extérieur de la chambre à combustion 8, grâce au prolongement 16 de la chambre 8 de forme conique qui provoque une augmentation de vitesse d'écoulement du flux gazeux latéral, la combustion dans la chambre du flux gazeux s'écoulant à grande vitesse à l'extérieur de la chambre tout en favorisant l'accrochage de la flamme.The grate 6 is held in the burner 1 by means of the extensions 13 of the side walls 12 which are inserted in the grooves 14 arranged on the shells 2 and 3, the insertion of the extensions 13 in the grooves 14 determines the position of the side walls 12 of the grid 6 relative to the interior faces of the burner 1 so as to generate corridors 15 for the flow of the gas flow passing through said walls 12, the spacing is such that it only allows the flow of the gas flow but not its combustion this taking place outside the combustion chamber 8, thanks to the extension 16 of the chamber 8 of conical shape which causes an increase in the speed of flow of the lateral gas flow, the combustion in the chamber gas flow flowing at high speed outside the chamber while promoting the attachment of the flame.

Le fait que la combustion du flux gazeux latéral a lieu à l'extérieur de la chambre à combustion engendre un avantage certain, notamment au niveau des parois du brûleur 1 qui restent froides durant ladite combustion.The fact that the combustion of the lateral gas flow takes place outside the combustion chamber generates a certain advantage, in particular at the level of the walls of the burner 1 which remain cold during said combustion.

Sans sortie du cadre de l'invention, les chambres de détente 7 et de combustion 8 peuvent être de différentes formes: en forme de parallélépipède, cylindrique, ovoîde, etc., la forme des grilles 6 de section en forme d'U ou V étant adaptée pour épouser la forme desdites chambres, notamment celle de combustion.Without departing from the scope of the invention, the expansion chambers 7 and combustion 8 may be of different shapes: in the shape of a parallelepiped, cylindrical, ovoid, etc., the shape of the grids 6 of section in the shape of U or V being adapted to match the shape of said chambers, in particular that of combustion.

Claims (6)

1. A burner for a blowlamp with fast gas flow, comprising two symmetrical half shells (2, 3) fixed to each other presenting an inlet tip (4) fitting and interlocking onto the lead-in gas pipe and on its extension an outlet tip (5), in between the two tips (4, 5) there is a diffusion grid (6) constituting the nozzle which separates a pressure-reduction chamber (7) and a combustion chamber (8), featured by the diffusion grid (6) presenting a cross-section in the shape of a U or V provided with holes constituting the nozzle for the flow of the gas both on its front part (11) of circular or triangular shape and on its side walls (12), the latter being offset from the interior walls of the burner (1) so as to form flow corridors (15) for the gas passing across them but whose combustion takes place outside the combustion chamber (8) because of the extension (18) of conical section of the said chamber (8), causing an increase in the speed of the said lateral flow, the combustion in the chamber (8) of the gas flowing from the front part (11) of the grid (6) has the effect of allowing the lateral gas flow to be lit outside the said chamber (8) whilst encouraging the engagement of the flame.
2. A burner for a blowlamp as in claim 1 featured by the dh fusion grid (6) of cross-section in the shape of a U or V being provided with holes whose total area is at least equal to or greater than the cross-section of the outlet of the combustion chamber (8).
3. A burner for a blowlamp as in claim 1 featured by the grid (6) being made, according to the pressure of the gas used, of one or two plates (9, 10) provided with holes, the two plates (9, 10) are superimposed side by side or offset in their front part, the cross-section of the holes in the upper plate (9) being larger than the cross-section of the holes in the lower plate (10).
4. A burner for a blowlamp as in claim 1 featured by the diffusion grid (6) being held in the burner (1) by means of extensions (13) of the side walls (12) inserted into grooves (14) made in the body of the burner (1
5. A burner for a blowlamp as in claim 4 featured by the interlocking of the extensions (13) of the side walls (12) into the grooves (14) determining the spacing of the side walls (12) from the grid (6) and from the interior faces of the burner (1).
6. A burner for a blowlamp as in claim 1 featured by the front part (11) of the grid extended by the side walls (12) presenting a cross-section in the form of a U or V which is circular or conical, or conical without extension by the side walls (12).
EP79400319A 1978-05-29 1979-05-21 Burner for a gas torch Expired EP0006048B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7816497A FR2427551A1 (en) 1978-05-29 1978-05-29 GAS TORCH BURNER
FR7816497 1978-05-29

Publications (3)

Publication Number Publication Date
EP0006048A1 EP0006048A1 (en) 1979-12-12
EP0006048B1 true EP0006048B1 (en) 1983-01-12
EP0006048B2 EP0006048B2 (en) 1986-09-10

Family

ID=9208981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400319A Expired EP0006048B2 (en) 1978-05-29 1979-05-21 Burner for a gas torch

Country Status (4)

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US (2) US4631023A (en)
EP (1) EP0006048B2 (en)
DE (1) DE2964465D1 (en)
FR (1) FR2427551A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606491B1 (en) * 1986-11-12 1989-03-03 Stepack IGNITION DEVICE FOR HIGH SPEED BURNER OF COLD NOZZLE TYPE AND BURNER USING THE SAME
FR2615271B1 (en) * 1987-05-12 1990-03-16 Stepack GAS BURNER, COLD NOZZLE TYPE
US5174744A (en) * 1991-11-01 1992-12-29 Gas Research Institute Industrial burner with low NOx and CO emissions
US5626471A (en) * 1994-05-10 1997-05-06 University Of Delaware Adjustable hot gas torch nozzle
US5458484A (en) * 1994-05-16 1995-10-17 Carrier Corporation Pre-mix flame type burner
US5520536A (en) * 1995-05-05 1996-05-28 Burner Systems International, Inc. Premixed gas burner
AU719752B2 (en) * 1996-07-05 2000-05-18 Origin Energy Lpg Limited Improved concentrated heat agricultural flame cultivator apparatus
NZ333772A (en) * 1996-07-05 2000-04-28 Origin Energy Lpg Ltd Apparatus, for weed and plant pest control implement, including a bunsen type burner to heat a vaporisation chamber
CA2262954A1 (en) * 1998-02-24 1999-08-24 Beckett Gas, Inc. Burner nozzle
US6244854B1 (en) * 1999-05-13 2001-06-12 The Boc Group, Inc. Burner and combustion method for the production of flame jet sheets in industrial furnaces
US6579085B1 (en) * 2000-05-05 2003-06-17 The Boc Group, Inc. Burner and combustion method for the production of flame jet sheets in industrial furnaces
US6780005B2 (en) 2002-07-01 2004-08-24 Smurfit-Stone Container Corporation Burner concentrator
WO2007048886A1 (en) * 2005-10-28 2007-05-03 Sefmat Hot air internal ignition burner/generator
US7581948B2 (en) * 2005-12-21 2009-09-01 Johns Manville Burner apparatus and methods for making inorganic fibers
US8523561B2 (en) * 2010-06-09 2013-09-03 Grand Mate Co., Ltd. Combustor of water heater
US9416960B2 (en) * 2012-04-30 2016-08-16 Bevolo Gas & Electric Lights, Inc. Lighting apparatus
EP2864702B1 (en) * 2012-06-22 2017-02-22 Ferndale Investments Pty Ltd A heating torch
US20150184848A1 (en) * 2013-12-26 2015-07-02 Rinnai Corporation Tubular Burner
US10364658B2 (en) 2015-09-14 2019-07-30 Vlp Lift Systems, Llc Downhole pump with controlled traveling valve
WO2019011738A1 (en) * 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. Premix gas burner
WO2019011736A1 (en) * 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. Premix gas burner

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US554253A (en) * 1896-02-11 Robert gilmour finlay
US1354295A (en) * 1918-03-06 1920-09-28 Esda Mfg Company Gas-burner for water-heaters
US1368120A (en) * 1918-09-26 1921-02-08 Cole Elnathan Gas-burner
FR733718A (en) * 1931-06-26 1932-10-10 Gas burner
US2985233A (en) * 1956-08-03 1961-05-23 Vaillant Joh Kg Bunsen burners
US3035632A (en) * 1957-11-12 1962-05-22 Sievert Ab Max Gas torch for welding of plastic materials
US3360029A (en) * 1965-09-29 1967-12-26 Du Pont Flame treating burner device
GB1198094A (en) * 1967-06-05 1970-07-08 Urbaine Et Provinciale D Elect Improvements in or relating to Gas Burners
DE6607199U (en) * 1968-06-06 1971-01-21 Fargas Spa BURNERS FOR GAS FUELS
ES172978Y (en) * 1968-09-07 1972-12-16 Polidoro BURNER FOR GAS FLAME.
BE755649R (en) * 1969-10-24 1971-02-15 Fond Du Lion HEATING UNIT
US3759245A (en) * 1971-12-10 1973-09-18 P Greco Heating torch
US3852025A (en) * 1973-09-28 1974-12-03 Int Magna Corp Infra-red heater
LU78821A1 (en) * 1978-01-06 1978-06-26 Columatec GAS BURNER

Also Published As

Publication number Publication date
EP0006048A1 (en) 1979-12-12
FR2427551B1 (en) 1980-11-14
EP0006048B2 (en) 1986-09-10
US4631023A (en) 1986-12-23
USRE33136E (en) 1989-12-26
DE2964465D1 (en) 1983-02-17
FR2427551A1 (en) 1979-12-28

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