GAS-AIR MIXER FOR COMBUSTIBLE GAS WITH PREMIXING Russian patent published in 2016 - IPC F23D14/64 F23D14/46 

FIELD: power engineering.

SUBSTANCE: claimed mixer comprises the blower assembly (6) with impeller (7) provided with radial vanes (8) driven about rotational axis (X) and with axial inlet section (9) and radial opposite outlet section (10), pipe (11) to house the blower impeller, and the first air feed channel (15). Note here that said first channel is aligned with said axis (X) and has the end part (15a) converging nearby the inlet section (9). The second tubular has flow feed channel (16) at the end of end section (15a) features the minimum cross-section. Note here that the second tubular section is aligned with the first channel (15) to allow the airflow to be mixed with gas flow upstream of the blower inlet section (9). The impeller vanes (8) extend from the impeller datum surface (12). Note here that every vane (8) has the leading edge (13) located in said inlet section (9). Note also the said leading edges make the inlet holes of appropriate vane channels between the pairs of vanes extending between inlet section (9) and outlet section (10). Pipe (11) with the profile (14) of leading surface is located ahead of impeller vanes (8) and spaced therefrom. In compliance with this invention, claimed device comprises the extra appliance (20) extending from the first channel (15) in direction from said axis (X) and located outside said first channel (15). Said extra appliance extends into the area confined simultaneously by the profile of the first channel end part (15), extension of end part (15a) to the impeller datum surface (12) datum surface side nearby the appropriate edges (13), leading edges (13) of the vanes, and profile (14) of the pipe front surface (11) ahead of the vanes (8 nearby the leading edges (13).

EFFECT: stabilised combustion, decreased emission of carbon dioxide.

7 cl, 7 dwg