Mobile incinerator with a rotary furnace, particularly for household refuse

Claim 1

In a mobile incinerator for collecting and incinerating refuse, said incinerator including a motor vehicle, a rotatable furnace mounted on the chassis of the motor vehicle, the furnace comprising a double-walled drum in the shape of the frustrum of a cone with the large base constituting an inlet opening for introducing material to be incinerated and the small base constituting an outlet opening for removing ash, means defining an ash collecting box positioned below the outlet opening, the axis of said frustrum of said cone comprising the axis of rotation of the furnace, said axis sloping downwardly in a direction from the inward opening toward the outlet opening, drive means for rotating the drum, means for introducing the material to be incinerated into the interior of the drum, burner means disposed in the drum, means for feeding inflammable gas to said burner means, and means for introducing the combustible gas, such as air, into the furnace by passing that gas through the inside wall of the drum, comprising the improvement wherein the inside wall of the drum comprises a gratelike structure constructed of thin perforated sheetlike metal, said gratelike structure having a plurality of openings formed therethrough, said gratelike structure also including air deflectors fixed thereto and directed inwardly toward the inside of the drum and positioned for deflecting the combustible gas which flows inwardly through said openings into the interior of said drum in a predetermined direction, the gratelike structure defining the inside wall coacting with the outside gas-tight wall of the drum to form an open annular space therebetween in which the combustible gas can freely circulate.