STONE OVEN Russian patent published in 2013 - IPC F24B7/00 

FIELD: heating.

SUBSTANCE: stone oven is a furnace chamber, at the end of which there is a closed hollow tank placed with square, round or other shape for increase of furnace space. A stone retort is inserted into the inner cavity of the tank in the form of a hollow multi-turn screw, the end of which is placed with its upper cover onto the tank, thus closing the furnace space, at the same time flame and hot smoke rise in the hollow screw, creating a long full multi-turn flame and smoke exchange with the inner surface of the screen tank (when filled with water).

EFFECT: increased efficiency, increased reliability and safety, higher convenience of assembly and operation.

1 dwg