GAS BURNER Russian patent published in 2016 - IPC F23D14/20 E01H5/10 

FIELD: energy.

SUBSTANCE: invention relates to power engineering, in particular, to machines for moistening snow mass during continuous construction of snow-ice roads and ground airfields in northern areas. Gas burner includes gas chamber with gas nozzles, pipe for feeding gas into gas chamber and air supply flow pipe with inclusions of loosened snow. Gas chamber is multi-sectional in form of annular partitions of tubes (3, 4 and 5) located in air supply flow pipe (2), and gas supply pipe (1) is made in form of a distribution manifold, axis of which is parallel to axis of air supply flow pipe on its outer side. Annular partitions (3, 4 and 5), forming sections of gas chamber, are made with different outer diameters and are installed in air supply flow pipe (2) coaxially, at different levels, with bottom arrangement of partitions of smaller diameter. In lower part of annular partitions are installed gas nozzles (12), arranged in storey rows, forming for each annular partition a widened combustion zone from inner, middle and outer rows of gas nozzles. Middle gas nozzles are installed with vertical arrangement of axes, parallel to axis of air supply flow pipe (2). In external and internal rows axes of gas nozzles are deflected in different sides from vertical position in radial direction at an angle not greater than 45°. Nozzle (12) in said rows are installed in alternating order, with arrangement of nozzle of middle row between nozzles of inner and outer rows. Furthermore, each nozzle is equipped with cap (14), having hole (18) of variable cross section with convergent and divergent shape, and disc swirler (13), coupled with hole (18) of cap. Disc swirler is provided with recess (15) in centre and at least three through holes (16), connected by slots (17) with recess, having an output into hole (18) of variable cross-section of nozzle cap.

EFFECT: high temperature passing stream of snow, efficient transfer of heat over throughout volume and high efficiency of a gas burner.

1 cl, 4 dwg