Patent ID: 6938563
Filing Date: 2005-09-06
Classification: F23H

Abstract:
1. A grate furnace, comprising: a grate including a plurality of movable grate steps movable in a longitudinal direction of said grate in a stoking movement direction, said grate further comprising at least one stationary grate step between every longitudinally adjacent pair of said movable grate steps; drive devices respectively arranged in areas of underblast chambers under said grate for moving said moveable grate steps; and a housing corresponding to each of the underblast areas, each housing corresponding to one of said drive devices for protecting said drive devices and arranged between said drive devices and said grate, each of said housings comprising a separate housing chamber for each of said drive devices arranged under said grate, each of said housings comprising a first longitudinal section and a second longitudinal section, said first longitudinal section being enclosed in the underblast chamber and said second longitudinal section being partially enclosed in the underblast chamber and being open toward a bottom such that said second longitudinal area is accessible from underneath.