A burner is disclosed having a base and a defined central opening. An inner wall stands on the base and defines an inner air gas channel with an outer perimeter of the burner. The inner wall includes a number of inner ports for directing gas from the inner air gas channel into the central opening. A central portion is included within the central opening, the central porting being smaller than the central opening. A central wall is arranged on the central portion and defines a central air gas channel and includes a number of central ports for directing gas from the central air gas channel into the central opening. A forced air element is included for forcing air into the central opening. A number of vanes are included running between the inner wall and the central portion, the vanes being configured to redirect the flow of air being forced into the central opening. The inner and central ports may be curved and/or arranged at an angle with respect to a center of the central opening.
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Mohr, Christian, "Power swirl burner - P-61897/WO (=ID-03922)", Technical Disclosure Commons, (March 10, 2021)