| 摘要 |
FIELD: domestic stoves or ranges. ^ SUBSTANCE: heater has housing provided with sides, back and front walls, lid, fire grate in the bottom, ash pun, and chimney. The housing receives convective pipes which are tightly secured to the bottom along the sides and in the openings provided in the opposite sides. The convective pipes are crossed at the top and form furnace chamber which is composed of the furnace with the door arranged at the bottom and in the top zone which receives the pipes for supplying secondary air to the top zone. The convective pipes are open and are in communication with the atmosphere. The top part of the housing provided with the front wall is projected over the furnace door. The furnace together with the top zone forms a common space in the furnace chamber. The convective pipes which shield the furnace chamber are tightly secured to the lid along the front and back walls and in the bottom of the projecting top part of the housing and in its bottom, respectively. The convective pipes have open faces and are in communication with the ambient air. The inclined parts of the crossing convective pipes are provided with bottom and top gas directing shields which form with them the bottom and the top gas ducts, respectively. The top gas-directing shields are interconnected to form a dihedral angle. The pipes for supplying the secondary air are mounted upstream of the inlet to the bottom gas ducts, are bent toward the air flow in the shielding convective pipes, and are secured to them. ^ EFFECT: simplified design and enhanced efficiency. ^ 4 cl, 5 dwg |
