BURNING DEVICE Russian patent published in 2009 - IPC F23D5/00 

FIELD: heating.

SUBSTANCE: invention relates to power engineering and may be used in heat generating plants to adjust stable and pulse burning. According to the invention a burner is provided consisting of a housing, which is connected to blowing air source. Convergent-divergent nozzle is installed along the housing axis so that it can move in longitudinal direction. Tapered parts of convergent and divergent sections are 1÷0.25 and 0.33÷0.1 respectively. Burning stabiliser is represented with tapered jet and stabilizing lattice with aperture angle of 60÷90° and maximum diameter not exceeding controlled area of nozzle. The furnace chamber is in the semi-spherical shape and rigidly connected to burning stabiliser. No less than three fuel injectors are installed on the spherical wall and evenly arranged along circumferential coordinate and at an angle to the central axis of burner housing. In addition convergent-divergent nozzle is installed in the housing with narrowing radial gap, which forms near-wall channel with a value no less than 10÷16 mm and 5÷8 mm at blowing air inlet and outlet respectively. Recirculation pipeline links the furnace chamber with narrowing device which is represented with de Laval nozzle and installed on the liquid fuel supply pipeline and before furnace chamber.

EFFECT: improvement of burner operation effectiveness.

1 dwg