Patent ID: 7083123

Claim:
Internal flame gas burner comprising a gas injector, a vacuum tube, or venture, ensuring an induction of primary air, a pot, and a cap, the cap covering the pot and together with the pot defining an annular distribution chamber for a fuel mixture of air and gas, the chamber having an internal edge that surrounds the center of this chamber and that is perforated with flame exit ports, and the vacuum tube having an inlet open to the ambient air, first and second longitudinal sections having, respectively, convergent and divergent profiles, and an outlet opening into the annular chamber, the first section originating at the inlet of the tube, the second section succeeding the first section and ending at the outlet of the tube, and the injector being relatively closer to the inlet of the vacuum tube than to the outlet of this tube, characterized in that the vacuum tube extends longitudinally along an axis inscribed substantially in a mid-plane of the annular chamber, and in that this tube has a length at most equal to twice the greatest distance separating the internal edge of the chamber from the center of this chamber.