Device and method for stabilizing the pressure and the flow of a gaseous mixture supplied to a surface-combustion cylindrical burner

摘要

The invention relates to a gas burner comprising a perforated cylindrical wall used as a combustion surface, a bottom wall and an inlet opening through which a combustible gaseous mixture is fed inside the burner. The stabilisation device consists of a grid (4a) that can be positioned in the inlet opening of the burner, and that comprises a central ring (5a) surrounded by a series of diverting vanes (6), the grid being thus configured so as to allow the free passage of the central portion of the flow of gaseous mixture entering the burner through the central ring (5a) while said diverting vanes (6) generate an eddy movement in the peripheral portion of the flow entering the burner from the outside of the central ring (5a).

主权项

1. A cylindrical gas burner comprising:
a perforated cylindrical wall extending between an inlet opening and a bottom wall, wherein the perforated cylindrical wall includes combustion orifices perforating therethrough; and a pressure and flow rate stabilizing device for introducing a combustible gas mixture through the inlet opening, wherein pressure and flow rate stabilizing device caps the inlet opening from outside of said inlet opening or is positioned inside said inlet opening, wherein the pressure and flow rate stabilizing device further comprises:
a central ring surrounded by a series of diverting vanes, wherein the pressure and flow rate stabilizing device allows a central flow of the combustible gas mixture through the central ring, the central flow having a non-perturbed, or not very perturbed, substantially laminar flow, capable of reaching the bottom wall while flaring out gradually, and wherein the diverting vanes are planar lamellas and generate a vortex flow of the combustible gas mixture with an approximately helical trajectory surround the central flow, such that a constant height of a flame is obtained at each combustion orifice.