EP 0040148 A1 19811118 - Burner torch with a device for the protection against flasback, backflow of gas and production of dangerous gaseous mixtures.
Title (en)
Burner torch with a device for the protection against flasback, backflow of gas and production of dangerous gaseous mixtures.
Title (de)
Brennerlanze mit Vorrichtung zum Schutz gegen Rückzündung, Gasrückströmung und Bildung gefährlicher Gasgemische.
Title (fr)
Chalumeau avec dispositif de protection contre les allumages intérieurs, retour de gaz et créations de mélanges gazeux dangereux.
Publication
Application
Priority
FR 8010326 A 19800508
Abstract (en)
1. A blowtorch (1) comprising means (2) for the intake of a combustible gas and means (3) for the intake of a combustion gas, the pressure of this gas being greater than that of the combustible gas ; means (4, 5) for controlling the flow of these gases, arranged in the said means for intake ; means (6) for ensuring the mixing of the said gases ; means (7) for the outflow of the said gaseous mixture to the burner or nozzle (8) of the said blowtorch ; and two non-return valves (9, 10) arranged respectively in each of the means for the intake of gas, characterised in that the non-return valve (9) which is arranged in the means for the intake of the combustible gas is placed downstream of the corresponding means of control (4), and in that a means (11), such as a metallic sinter, for suppressing a flame, is arranged in the means for the intake of the combustible gas, between the non-return valve (9) and the means for mixing, in the immediate vicinity of the latter components.
Abstract (fr)
Chalumeau (1) comprenant des moyens (2) pour l'admission d'un gaz combustible et des moyens (3) pour l'admission d'un gaz comburant, la pression de ce gaz étant supérieure à celle du gaz combustible; des moyens (4,5) de réglage du débit de ces gaz disposés sur lesdits moyens d'admission; des moyens (6) pour assurer le mélange desdits gaz; des moyens (7) pour la sortie dudit mélange gazeux jusqu'au bec ou à la buse (8) dudit chalumeau; caractérisé en ce qu'il comporte un clapet (9,10) disposé sur chacun des moyens d'admission de gaz et un moyen (11) pour étouffer une flamme, disposé entre lesdits clapets et les moyens de mélange desdits gaz. Prévention des accidents dus à des retours de gaz en particulier dans le circuit de gaz combustible.
IPC 1-7
IPC 8 full level
F23D 14/82 (2006.01)
CPC (source: EP)
F23D 14/825 (2013.01)
Citation (search report)
- FR 2235622 A5 19750124 - ATLANTIQUE CHANTIERS [FR]
- FR 609335 A 19260812
- FR 592979 A 19250813
- FR 1336491 A 19630830
- US 2611424 A 19520923 - SMITH ELMER H
- CH 472632 A 19690515 - MUELLER MAX [CH]
- FR 1480261 A 19670512
- FR 756283 A 19331207 - LINDE AIR PROD CO
- FR 344531 A 19041107 - PAUL CHARLES DUMESML [FR]
- FR 527827 A 19211031 - ERNEST PRESTON PRATOR [US]
- FR 1453621 A 19660603 - MESSER GRIESHEIM GMBH
Designated contracting state (EPC)
AT BE CH DE GB IT LU NL SE
DOCDB simple family (publication)
EP 0040148 A1 19811118; EP 0040148 B1 19840509; AT E7424 T1 19840515; DE 3163468 D1 19840614; FR 2482259 A1 19811113; FR 2482259 B1 19861121
DOCDB simple family (application)
EP 81400738 A 19810508; AT 81400738 T 19810508; DE 3163468 T 19810508; FR 8010326 A 19800508