Domestic combustion boiler using coal dust (P.F.) - has pre-heatable electric glow plug, for igniting dust/air blast

摘要

Boiler for small plants has an electrically heated glow plug following the puverised fuel burner in the direction of blas. More particularly the p.f. fired boiler plant is for household use, and has p.f. silo, pneumatic conveyor, p.f. burner, glow plug, exhaust gas filter, chimney and gas bottle. The glow plug can be connected to a thermostat so that it can be heated up before switching on the burner. The current capacity of electrode igniters as used for oil plant, is insufficient for p.f. The plug is on the opposite boiler wall or near the p.f. blast mixture, with an iron core and/or an armoured, e.g. ceramics core, emitting enough radiant heat for ignition.