| 摘要 |
The invented stoker comprises integral water-cooled combustion-agent supply pipings (1-7, 15, 16) and fire grates (13, 19) provided with means on the fire grate for preventing refuse fuel being burned on the fire grate from making intimate-contact with fire-grate upper surface. The integral water-cooled air supply pipings admit pressurized air in each of air pipings (1a, 1b, ...) of the air supply pipings into the combustion chamber through air-jet openings (18) disposed on the air pipings and through ash-discharge opening or separate ash-discharge and air admission openings in the fire grate while supporting the fire grate so that incineration capacity and combustion efficiency is increased and enhanced respectively. Plural axial-stage air supply into combustion chamber having large chamber wall distance may be made by use of the invented integral water-cooled internal-channel pipings for maintaining air plenum pressure even far into central region of the combustion chamber. The intimate-contact preventing means on the sectoral-planform fire grates with fluctuational or fluctuation-free upper surface thereof comprises sectoral ring-planform fins (19primes) and sectoral spider-web-planform fins (21a-k) disposed on the fire-grate upper surface while that for fire grates having two parallel planform sides thereof comprises straight fins (20a-f) disposed on the fire-grate upper surface of fluctuational or of fluctuation-free profile. Straight-planform ash-discharge openings in either one of the two categories of said planform fire grates may be mated with agitation discs (11a-j) for agitation of refuse fuel for greater combustion-agent and refuse contact area for a given volume of waste fuel. |
