HEATING OVEN Russian patent published in 1994 - IPC

FIELD: heating ovens. SUBSTANCE: device has heating chamber, wind box door, air duct with passages and control wind vanes, fire grate, ash chamber, flue dampers, heating element and smoke flue system. After warming-up of the heating element, cold air is fed to it through passage and heated air escapes from it to the room being heated under action of draft due to half-open wind box door. Cooler air from the room enters the heating chamber. Then respective passages and wind box door are closed by means of wind vane. Such position is retained till combustion of fuel has been completed. EFFECT: enhanced efficiency. 4 dwg