Catalytic afterburner and bottle equipped with same

A catalytic combustion burner in a porous material, paving in its lower part a substantially axial cavity with a wick to convey a combustible liquid to the burner, and in its upper part an annular peripheral zone carrying a catalyst and being separated by a substantially axial annular groove extending from the upper surface of the burner, with a central zone with no catalyst forming a vaporization zone, characterized in that the central zone shuts off, at least in part, the upper part of the cavity and that said upper part communicates with the atmosphere by the presence of at least one open channel, said channel being situated in the upper part of the burner, and each channel being set out substantially radially.

A catalytic combustion flask (1), to contain a combustible liquid (2) the neck of which (5) is designed to hold a combustion catalytic burner (3, 30) with a wick (4) dipping into said liquid (2), said combustion catalytic burner having in its lower part a substantially axial cavity (6) with said wick (4) to convey said combustible liquid (2) to the burner (3, 30), and in its upper part (3b, 30b) an annular peripheral zone (7) carrying a catalyst and being separated by a substantially axial annular groove (9) extending from the upper surface (10) of the burner (3, 30), with a central zone (40) with-no catalyst forming a vaporization zone, characterized in that the central zone (40) shuts off, at least in part, the upper part (24) of the cavity (6) and that said upper part (24) communicates with the atmosphere by the presence of at least one open channel (8, 33), said channel (8, 33) being situated in the upper part (3b, 30b) of the burner (3, 30), and the burner (3, 30) resting on a base (16) fixed into the neck (5) of said flask (1), characteristics in that said base (16) has at least one hole (19) enabling the inside of the flask (1) to communicate with the atmosphere.