| 摘要 |
The boiler comprises a central fuel store 2 of frustoconical shape, flared towards the bottom and limited by a lower grid 4, a central portion 17 of which is of conical shape and flared towards the bottom, the apex 20 being below the base 13 of the water strips 7 surrounding the store 2. Channels 25 bring secondary air from the ash box 5 into the combustion compartment 15. <IMAGE>
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