| 摘要 |
1. Combustion unit of solid material forming a homogeneous longiform cylindrical block such as a log of wood adapted to supply and maintain an open fire in a hearth, of the type comprising a plurality of recesses passing through the block, characterized : a) in that said recesses are constituted in combination, on the one hand, by at least one plane slot (2, 2'), passing through the block and opening out on two long faces of said block and, on the other hand, by a plurality of passages (3, 4, 5, 6 and 7), with axes at right angles with respect to the plane of said slot (2, 2'), each orthogonal passage being constituted by cylindrical bores of diameter included between 0.4 and 0.8 times the thickness of the longiform block and opening out on a long face forming front face (8) of the block and terminating on the opposite side in an inner slot (2, 2'), the rear wall (15) of said slot thus being visible from the front face (8) of the log through said passages (3, 4, 5, 6, 7), b) and in that it comprises immobilization means constituted by a flat portion allowing the stable positioning of the block, particularly on the fire-dogs, so that, in this stable and univocal position, the slot is located in a substantially vertical plane, the orthogonal passages thus being adapted to be oriented horizontally and turned towards the space of the premises served by the hearth.
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