| 摘要 |
PURPOSE: A boiler with a grate having excellent heat resistance and abrasion resistance is provided to improve thermal efficiency by introducing a fire tube cleaning member supplying compressed air for cleaning the fire tube and to extend lifetime of the boiler. CONSTITUTION: A boiler(B) comprises a plurality of grate elements(30) and a grate. The grate element includes an upper surface unit(30A), front surface and rear surface support units(31,31'), and both sides of the wall(33). The support units are connected to the upper surface unit. The both sides of the wall are connected to the upper surface unit. The grate elements include a return current space surrounded by the support unit and the both sides of the wall. A front nozzle(31A) is formed on the front surface support unit. The grate comprises a fixing unit and a transfer unit. |
