| 摘要 |
The invention relates to a burner, comprising a primary air tube guiding a fuel mass flow and having a fuel nozzle formed at the burner-opening-side end, and a secondary air tube that coaxially surrounds the primary air tube, and a core air tube preferably coaxially arranged inside the primary air tube, wherein the fuel nozzle forms an ignition device provided with at least one electric resistance wire (16), and which supplies, in the burner, in the region of the fuel ignition location that is forming, the amount of heat energy required for the initiation and the course of the initial pyrolysis and ignition of the fuel conveyed in the primary air tube. The aim of the invention is to create an alternative and improved fuel nozzle. Said aim is achieved in that the fuel nozzle is integrally formed, in that at least one spirally circulating groove is formed in the surface of a secondary air repellent cone facing the secondary air tube, in which groove the at least one resistance wire (16) is spirally wound in at least one resistance wire winding (17) that comprises a plurality of windings. |
