MULTIPLE-BEDDED FURNACE Russian patent published in 2009 - IPC F27B9/18 

FIELD: instrument engineering.

SUBSTANCE: invention refers to design of multiple-bedded furnaces. A multiple-bedded furnace comprises a body with its wall having an internal surface and an external surface and limiting an internal cylindrical workspace of the furnace with the vertical axis. The furnace is provided with a number of bottoms that partition the workspace on working areas, and at least one tooth located in a working area above the relevant bottom and provided with an arm arranged at the furnace wall and forming a cleanable circle on internal surface of the furnace when the tooth rotates about the vertical axis. The furnace has a set of pockets in its wall forming a line of following access holes on internal surface of the furnace within the area cleaned with the tooth. Herewith, the full-circle distance of internal surface of the furnace within cleared area between two adjacent access holes is less than full-circle extent of the access hole.

EFFECT: improved reliability and operating safety of the furnace.

11 cl, 6 dwg