SWIRLER, METHOD FOR PREVENTION OF BACKFIRE OF BURNER AT LEAST WITH ONE SWIRLER, AND BURNER Russian patent published in 2014 - IPC F23D14/46 F23D14/82 F23R3/14 

FIELD: power industry.

SUBSTANCE: swirler (31, 131, 231) includes central fuel distributing element (37), external wall (39) enveloping the central fuel distributing element (37) and restricting axial combustion air flow passage (41), swirling blades (47) passing in radial direction to external wall (39) and providing the flowing combustion air with a tangential component of the flow, as well as enveloping central fuel distributing element (37), and partition wall (42, 142) located radially inside external wall (39) and dividing flow passage (41) into radially internal section (43) and radially external section (45); radially internal section (43) of the passage provides for combustion air flow without any provision of the tangential component of the flow. Fuel lines (49) pass through radially internal section (43) of the passage to swirling blades (47) in radially external section (45) of the passage.

EFFECT: invention allows preventing backfire in a burner.

13 cl, 7 dwg