| 摘要 |
An elongate combustion chamber is inclined at a 50 DEG to 80 DEG angle to the vertical, is connected at the lower end face to a feed duct through which fuel is pushed into the chamber and is open at the upper end face. The side walls forming the lower part of the chamber are downwardly converging and the free edges are spaced from each other at a distance decreasing in the direction of the open upper end face from the lower end face to form a primary air opening from a primary air channel therebeneath, the tapered opening covered by corresponding downwardly converging solid side walls connected at an apex and spaced from the other walls to form an air passage therebetween from the primary air channel to the combustion chamber. The upper side walls of the combustion chamber defining the lower partition of a secondary air channel and being provided with openings for secondary air feed into the chamber, end plates sealing the upper and lower ends of the chamber and primary and secondary air channels, and blast-air feed conduits connected into the lower ends of the primary and secondary air channels to supply air thereto from a blower.
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