STOVE Russian patent published in 1997 - IPC

FIELD: stove heating. SUBSTANCE: stove includes fuel chamber for burning fuel, accumulating chamber with heat accumulating material and water reservoir combined by common housing provided with air ducts (smoke flues), additional labyrinth passage for supply of air from space surrounding the stove to fuel burning zone. Walls of this passage are partially combined with walls of labyrinth passage of fire box whose door is provided with additional passage for supply of air space surrounding the stove to fuel burning zone. Additional passages are provided for gas flows: additional gas duct-passage is made between accumulator and water reservoir; this passage is provided with devices for selective distribution of gas. Vertical shield with upper closures is provided around stove in area of accumulator and fire box; besides that, additional passages are provided for admitting gas flows through accumulator; additional passages are provided with closing (opening) devices. EFFECT: enhanced efficiency. 4 cl, 2 dwg