GAS-WELDING BURNER Russian patent published in 2009 - IPC B23K5/00 F23D14/40 

FIELD: mechanics; tools.

SUBSTANCE: burner tip comprises nozzle, tube and mixer located between handle and tube, and the mixer has inlet channel of injecting oxygen, inlet channels of injected combustible gas and mixing chamber located at the outlet of specified channels. Area of injecting oxygen inlet channel section, sum of areas of injected combustible gas inlet channels sections and area of mixer mixing chamber are in ratio of 1:(0.7-3.5):(5-9.5). Angle between every inlet channel of injected combustible gas and inlet channel of injecting oxygen of mixer makes 60-90°. Mixing chamber is arranged with cylindrical inlet part with diameter "d" that goes to conic part with expansion in direction of combustible mixture flow. Length of cone part H>(10-15)d, and angle at the cone top is α=6-12°. Thickness of mixer wall in upper part in direction of combustible mixture supply in the area of mixing chamber cylindrical part inlet location is S>2.5 d.

EFFECT: expansion of possibilities for control of parameters, improved stability of burning and creation of optimal composition of combustible mixture, high quality of gas-flame processing of different parts.

3 dwg