F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
F23D 14/62 (2006.01) B23K 7/08 (2006.01) F23D 14/38 (2006.01) F23D 14/82 (2006.01)
Patent
CA 2211772
A fuel gas and preheat oxygen mixer for a gas torch comprises a bore in the torch head receiving a gas mixing insert having an axially thin peripheral gas mixing recess which receives preheat oxygen and fuel gas from corresponding manifold areas across radially thin metering passages. The gases are mixed in the mixing recess and delivered to the torch tip through delivery passages which, together with the mixing recess and metering passages provide gas flow paths having abrupt directional changes, all of which cooperatively resist flashbacks during use of the torch.
Mélangeur de gaz de combustion et d'oxygène de chauffe pour un chalumeau à gaz comportant un trou dans la tête d'oxycoupage qui reçoit un mélangeur de gaz rapporté avec rainure périphérique axialement étroite de mélange du gaz recevant l'oxygène de chauffe et le gaz de combustion des zones correspondantes du distributeur par des passages doseurs radialement étroits. Les gaz sont mélangés dans la rainure périphérique et acheminés à la pointe du chalumeau par des passages diffuseurs qui, avec la rainure de mélange et les passages doseurs, fournissent des trajets d'écoulement des gaz comportant des changements abrupts de direction, tout ceci contribuant à résister aux retours de flamme durant l'utilisation du chalumeau.
Gowling Lafleur Henderson Llp
Lincoln Electric Company (the)
Lincoln Global Inc.
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