Patent ID: 7958884

Claim:
A solid fuel burner, comprising: a space for solid fuel to be burned; a base bordering the space; a top comprising a cover bordering the space for solid fuel; at least one side wall bordering the space for solid fuel and extending between the base and the top and including non-adjustable air intake openings; a grate arranged inside the space for solid fuel within fixed distance from the base; an ash space located below the grate; at least one substantially vertical fire pipe arranged inside the space for solid fuel and arranged to be surrounded by the solid fuel, the fire pipe comprising a wall, a lower end, an open upper end, openings in the wall to permit air to flow between the fire pipe and the space for solid fuel, and an air intake at the lower end, the fire pipe extending through the cover such that a perpendicular distance between the fire pipe and the side wall from the top to the base is constant; and a substantially horizontal air intake pipe connected to the lower end of the fire pipe at a point between the grate and the base, the air intake pipe comprising a first open end arranged outside of the at least one side wall of the burner and a second open end arranged within the fire pipe, wherein the second open end is not directly connected to the ash space.