Incinerator

Claim 2

An incinerator for burning waste material, comprising in combination: a. a combustion chamber having spaced end walls and a side wall with its central longitudinal axis extending between said end walls; b. inlet means for introducing waste material and air into said chamber in a manner effective for providing a vortical movement of said waste material towards one of said end walls; c. means for igniting said waste material during its vortical movement; d. an exhaust flue port passing through one end wall of the combustion chamber substantially concentric with said central longitudinal axis, comprising a flue pipe extending into said combustion chamber having an open end positioned inward away from the one end wall; and, e. an annular plenum chamber surrounding a portion of the flue pipe in an area intermediate its length and having at least one supply conduit communicating with a source of cooling gas entering into said plenum chamber, said annular plenum chamber being provided with at least one orifice adjacent to the surface of the flue pipe extending therefrom into the combustion chamber whereby cooling gas can discharge from the plenum chamber through said orifice and flow over the surface of the flue pipe.

Claim 3

The incinerator of claim 1, wherein the supply conduit for cooling gas enters into the annular plenum chamber in a tangential direction to cause a swirling movement of the cooling gas around the surface of the flue pipe.

Claim 4

The incinerator of claim 2, wherein the orifice in the plenum chamber for the discharge of cooling gas is an annular slot extending around the flue pipe.

Claim 5

The incinerator of claim 2, wherein the orifice in the plenum chamber for the discharge of cooling gas is a plurality of openings positioned in an annular arrangement around the flue pipe.

Claim 6

The incinerator of claim 1, wherein the annular plenum chamber surrounds at least the portion of the flue pipe which passes through the combustion chamber end wall.

Claim 7

The incinerator of claim 5, wherein the annular plenum chamber surrounding an intermediate area of the flue pipe which passes through the combustion chamber end wall, terminates within the combustion chamber approximately adjacent the inner surface of the end wall of said chamber.

Claim 8

The incinerator of claim 6, wherein the orifice in the annular plenum chamber directs the discharged cooling gas along the surface of the flue pipe extending therefrom into the interior of the combustion chamber.

Claim 9

The incinerator of claim 7, wherein the annular plenum chamber is provided with at least two cooling gas supply conduits entering said chamber in tangential directions to cause a swirling movement of the cooling gas around the surface of the flue pipe.

Claim 10

An incinerator for burning waste material, comprising in combination: a. a combustion chamber having spaced end walls and a side wall with its central longitudinal axis extending between said end walls; b. inlet mans for introducing waste material and air into said chamber in a manner effective for providing a vortical movement of said waste material towards one of said end walls; c. means for igniting said waste material during its vortical movement; d. an exhaust flue port passing through one end wall of the combustion chamber substantially coaxially with said central longitudinal axis, comprising a flue pipe extending a predetermined distance into said combustion chamber and having an open end for communication with the interior of the combustion chamber positioned inward away from the one end wall; and, e. an annular plenum chamber surrounding a length of the flue pipe in the area passing through the one end wall of the combustion chamber and having at least one supply conduit communicating with a source of cooling gas entering into said annular plenum chamber in a tangential direction to cause a swirling movement of the cooling gas around the surface of the flue pipe, said annular plenum chamber being provided with at least one orifice adjacent to the surface of the flue pipe extending therefrom into the combustion chamber and being directed to discharge cooling gas from said plenum chamber to flow over the surface of the flue pipe extending therefrom into the interior of the combustion chamber in a swirling path.

Claim 11

An incinerator for burning waste material, comprising in combination: a. a combustion chamber having spaced end walls and a side wall with its central longitudinal axis extending between said end walls; b. inlet mans for introducing waste material and air into said chamber in a manner effective for providing a vortical movement of said waste material towards one of said end walls; c. means for igniting said waste material during its vortical movement; d. an exhaust flue port passing through one end wall of the combustion chamber substantially coaxially with said central longitudinal axis, comprising a flue pipe extending a predetermined distance into said combustion chamber and having an open end for communication with the interior of the combustion chamber positioned inward away from the one end wall; and, e. an annular plenum chamber surrounding a length of the flue pipe in the area passing through the one end wall of the combustion chamber and having at least one supply conduit communicating with a source of cooling gas entering into said annular plenum chamber in a tangential direction to cause a swirling movement of the cooling gas around the surface of the flue pipe, said annular plenum chamber being provided with at least one orifice adjacent to the surface of the flue pipe extending therefrom into the combustion chamber and being directed to discharge cooling gas from said plenum chamber to flow over the surface of the flue pipe extending therefrom into the interior of the combustion chamber in a swirling path.

Claim 12

The incinerator of claim 9, wherein the annular plenum chamber surrounding a length of the flue pipe extends from outside the combustion chamber and through the end wall of the combustion chamber and terminates within the combustion chamber approximately adjacent to the inner surface of the end wall of said chamber.