Patent ID: 8747108
Filing Date: 2014-06-10
Classification: F23D

Abstract:
1. A burner having at least two concentric flame sections, the burner comprising: a burner head, which contains the at least two concentric flame sections, wherein each section comprises an intermediate segment, an outer segment and a main channel located between the outer segment and the intermediate segment, wherein each segment comprises respective combustion ports, the respective combustion ports of the outer segment comprising a helicoid structure, which defines an inclination to produce inclined flames, the combustion ports of the intermediate segment comprising a straight structure, wherein each combustion port of the intermediate segment comprises a labyrinth; a flame moving chamber disposed between each flame section, wherein the flame sections are covered by a lid; at least one Venturi duct in each flame section with an exit to the main channel; and at least one exit disposed on a lower surface of the burner head to aerate the burner head, wherein the combustion ports comprise a main combustion port having a cross-sectional area defined by a plurality of steps, the plurality of steps defining a slope sequence arranged to control a velocity of a combustion mixture flowing there through, the slope sequence defined by the plurality of steps comprising a first slope in a range from 10° to 30°, a second slope in a range from 0° to 15°, a third slope in a range from 30° to 80° and a fourth slope in a range from 0° to 15°, wherein the combustion ports of the central burner head define an inclination, wherein the inclination of the burner head and the inclination of the central burner are arranged in a clockwise direction or in a counter-clockwise direction, and the inclination directions in both burners is the same or opposite with respect to one another.