Fecha de publicación: 31/08/2005 Fuente: WIPO "bee" Burner insert has a safety sink (1) open at the top and inserted into the combustion chamber in place of a grate and/or ash box. Preferred Features: The safety sink has an outwardly protruding peripheral flange (2) on its outer side placed on the support surface (5) for the grate. The flange has air passage openings (3). The upper edge of the safety sink protrudes upward over the flange.