Patent ID: 9464810
Filing Date: 2016-10-11
CPC Classification: F23C,F23D,F23R

Claim Text:
1. A burner comprising: a swirl chamber having a conical shape defining a central axis; the swirl chamber including a plurality of wall elements; the plurality of wall elements define a pressure side, a suction side and a trailing edge, wherein at least some of the plurality of wall elements include nozzles for fuel injection, said nozzles are located at at least one of the pressure side, the suction side, and the trailing edge, the plurality of wall elements define slots between each other, wherein the slots have different widths (w) in consecutive planes in an axial direction, and the consecutive planes are perpendicular to the central axis; a transition element at a larger end of the swirl chamber and a mixing tube connected to the transition element, the transition element and the mixing tube being manufactured in separate elements and connected together, a passage provided between the transition element and the mixing tube; and an inlet of the passage faces an outside of the mixing tube and the swirl chamber and an outlet of the passage faces an inside of the mixing tube, wherein the passage is arranged to eject a flow through it, parallel to a surface of the mixing tube, wherein an axial location of the outlet of the passage and radial gap of the passage are fixed to ensure a controlled flow through the passage at all operating conditions.