Patent ID: 7559286

Claim:
A solid fuel combustion apparatus comprising: a heated enclosure; a first elongate tube having a first end and a second end opposite the first end, said second end of the first elongate tube extending into the heated enclosure; a second elongate tube, the first elongate tube being within the second elongate tube, the first and second elongate tubes providing a first channel therebetween; means for providing solid fuel being connected to the first channel at the first end of the first elongate tube and providing solid fuel thereto; means for providing an ignition flame in the heated enclosure including a third elongate tube, a fourth elongate tube and an ignition fuel source, said first and second elongate tubes being within the third elongate tube, said third elongate tube being within the fourth elongate tube, said second and third elongate tubes providing a second channel therebetweeen and said third and fourth elongate tubes providing a third channel therebetween, the ignition fuel source being connected to the second channel near the first end of the first elongate tube, the fourth elongate tube having an air inlet near the first end of the first elongate tube; and a source of pressurized fluid being connected to the first elongate tube at the first end and providing the pressurized fluid to the heated enclosure, whereby the pressurized fluid is released into the heated enclosure thereby creating a pressure differential between the heated enclosure and the solid fuel feeder means along the first channel, said pressure differential aspirating the solid fuel into the heated enclosure where it is ignited by the ignition flame.