| 摘要 |
The invention relates to water-heating boilers. In the flue tube-furnace a net intermediate emitter is installed, this is made as a tube made of continuous-welded rings between which net is placed. Emitter is surrounded with wire as a spiral and has six ribs welded to the rings at equal distance one from another. From the frontal side of the emitter to one of the ribs a stopper is welded, for prevention of displacement of flue tube with respect to the fire one. The net and the rings of the emitter are made of fire-resistant steel, and diameter of the emitter and its length are smaller than diameter and length of the flue tube, respectively. The invention promotes more uniform distribution of temperatures in the furnace and decrease of harmful outbursts. |
