Air supply for pit type refuse incinerator

Claim 1

In an incinerator of the class described having a floor and surrounding walls defining a substantially rectangular combustion chamber with a clean-out opening in one side wall extending to the floor of the chamber and a charging opening in a wall at right angles to said first wall and disposed near the top of the chamber, a plurality of horizontal air ducts extending in parallel beneath the floor of the combustion chamber, an air supply header connected to one end of each duct near said first wall of the combustion chamber, a plurality of vertically disposed ducts connected individually to the opposite end of each of said first named ducts and extending upwardly along and on the outside of the corresponding wall opposite said first wall of the combustion chamber with the upper end of each duct closed, a plurality of underfire jet ports in the floor of the combustion chamber connected to each said horizontal duct to receive air therefrom, an overfire port leading through the last named wall of said combustion chamber from each of said vertical ducts, whereby said horizontal ducts constitute manifolds supplying primary air through the floor to the combustion chamber and said vertical ducts supply secondary air through the wall to the combustion chamber, a blower room adjacent said combustion chamber and separated therefrom by said second named wall, a blower in said blower room connected to deliver air to said air supply header, and a charging platfoRm closing the top of said blower room and communicating with said charging opening.