A PELLET BOILER WITH A ROTATABLE GRATE

摘要

PURPOSE: A pellet boiler with a rotatable fire grate structure is provided to supply convenience by incline a fire grate after a pellet is completely combusted and to clean pellet ashes remaining inside a combusting unit with a fire grate ash receiver. CONSTITUTION: A pellet boiler with a rotatable fire grate structure comprises a fuel supply unit, a transfer unit, an ignition unit, a combusting unit, a heat exchanger, an exhausting unit, and an ash receiver. The combusting unit includes a fire grate. The fire grate includes a fixed grate (142) and a rotary grate (143). A gap between the fixed grate and the rotary grate is separated in a predetermined gap and a ventilation hole is formed between the fixed grate and the rotary grate.