OXYGEN CUTTING TORCH Russian patent published in 1997 - IPC

FIELD: mechanical engineering; welding and cutting equipment. SUBSTANCE: device has outer and inner nozzles, head with heating and cutting oxygen feed and fuel gas supply channels whose outputs communicate through mixer with fuel mixture feed channel which is formed by input section and output nozzle. Cutting oxygen feed channel is arranged coaxially in inner nozzle. In proposed device ratio of summary area of input chambers of heating oxygen and fuel gas of mixer to area of input section of fuel mixture feed channel and to area of output nozzle of fuel mixture feed channel is maintained within 1:(2.3-11.2):(0.65-1.1.5). Ratio of area of input chamber of heating oxygen to area of input chamber of fuel gas of mixer is 1:(2-3.5). EFFECT: enlarged operating capabilities. 3 cl, 3 dwg