| 摘要 |
<p>A generally cylindrical casing is hollow, and is supported by a base so that the axis of the casing is horizontal. A vertical partition divides the casing into a fire chamber and a smaller exhaust chamber. The smaller chamber is vented to the outside atmosphere by a chimney. The partition does not completely isolate the chambers, but enables them to be interconnected through a small gap at its bottom. Extending rearwardly along the curved portion of the casing are two oppositely disposed parallel horizontal elongated air intake slits at the level of the bottom of the partition. The major portion of the section of the casing that surrounds the fire chamber is of glass. The base can have a horizontal shallow half cylindrical shell at its top which supports the casing and a vertical hollow intake duct extending from a bottom opening in the base to the slits to feed air thereto. Alternatively, one of the slits can be defined by the gap between a hinged lid and the casing providing access to the chamber.</p> |
