Ash removal system and heating mechanism for wood waste burners
AssigneeEnterprises International, Inc.
InventorsFrank H. Lamb, Eichi Kikegawa
Life of this patent
Estimating the term…
Abstract
Wood waste fuel is piled on a perforated grate within a combustion chamber. The fuel is burned by underfire air passing through the grate up through the pile. Ash forms at the bottom of the pile and is removed about a complete 360 degree perimeter where it falls into an ash pit and is subsequently removed from the burner. Fuel is fed to the burner through an elongated continuously expanding tube by a reciprocating ram feeder.
Claims10
A solid fuel burner of the type having a combustion chamber, a floor in said chamber having a grate for supporting a pile of fuel, means for feeding the pile, means for introducing underfire combustion air through said grate to said pile for burning the combustible matter in the fuel and leaving a residue ash, the improvement comprising:
- an ash removal system for said burner, said system including a generally continuous peripheral ash discharge opening surrounding substantially the entire periphery of of said combustion chamber and located radially outward of of said combustion chamber and located radially outward of said grate, and
- means for moving ash from the bottom of said pile radially horizontally out through said peripheral ash discharge opening whereby ash is removed at substantially all locations around said pile, said ash removal system including means limiting the vertical height of said discharge opening and blocking radial movement of an upper unburned portion of the pile for limiting the ash discharged to the lowest and, consequently, most fully combusted portion of the pile, thus restricting removal of unburned fuel.
Dependencies are inferred from the claim text.