Air modulation for waste incinerator

Claim 2

An incinerator for burning combustible material comprising a primary combustion chamber having an inlet opening for waste material and an outlet port for gases exhausting therefrom, an outlet stack containing a secondary combustion chamber connected to the outlet port to receive gases exhausting from the primary combustion chamber, movable door means closing the inlet opening for waste material, an air supply duct connected to the primary combustion chamber, valve means in the air supply duct continuously modulating air flowing to the primary combustion chamber, and means responsive to temperature of the burning waste material controlling the valve means in the air supply duct whereby an increase of temperature effects a decrease of air being supplied to the primary combustion chamber.

Claim 3

An incinerator as defined in claim 1 having an air supply duct connected to the secondary combustion chamber, valve means in the air supply duct leading to the secondary combustion chamber, temperature responsive means in the secondary combustion chamber inversely controlling the valve means in the air supply duct thereto whereby an increase of temperature in the secondary combustion chamber effects an increase of air being supplied thereto.

Claim 4

An incinerator of the type defined in claim 1 including a cooling means in the primary combustion chamber, and a thermocouple responsive to an increase of temperature in said incinerator actuating the cooling means when the temperature exceeds a predetermined limit.

Claim 5

An incinerator of the type defined in claim 1 including a limit switch operable upon opening the movable door, and means responsive to a signal from said limit switch closing the primary air supply valve when said door is opened.

Claim 6

Apparatus for incinerating combustible material comprising a primary combustion chamber having an inlet opening for waste material and an outlet port for gases exhausting therefrom, an outlet stack containing a secondary combustion chamber connected to the outlet port to receive gases exhausting from the primary combustion chamber, a door for the inlet opening to the primary combustion chamber, an air supply duct connected to the primary combustion chamber, valve means in said air supply duct continuously modulating air flowing to the primary combustion chamber, a secondary air supply duct connected to the secondary combustion chamber, valve means in the secondary air supply duct arranged to control air flowing therethrough, a thermocouple in the secondary combustion chamber detecting the gas temperature therein, and control means responsive to said thermocouple in the secondary combustion chamber simultaneously moving the valve in the secondary air supply duct toward an open position and the valve in the primary air supply duct toward a closed position to provide complete oxidation of the gas produced by the burning waste.

Claim 7

Apparatus for incinerating combustible material comprising a primary combustion chamber having an inlet opening for waste material and an outlet port for gases exhausting therefrom, an outlet stack containing a secondary combustion chamber connected to the outlet port to receive gases exhausting from the primary combustion chamber, a door for the inlet opening to the primary combustion chamber, an air supply duct connected to the primary combustion chamber, valve means in said air supply duct continuously modulating air flowing to the primary combustion chamber, a secondary air supply duct connected to the secondary combustion chamber, valve means in the secondary air supply duct arranged to control air flowing therethrough, a thermocouple in the secondary combustion chamber detecting the gas temperature therein, and control means responsive to said thermocouple in the secondary combustion chamber simultaneously moving the valve in the secondary air supply duct toward an open position and the valve in the primary air supply duct toward a closed position to provide complete oxidation of the gas produced by the burning waste.

Claim 8

An incinerator for burning combustible waste material as defined in claim 5 including a water cooling spray in the primary combustion chamber, a source of water connected to said cooling spray, and means responsive to an increase of temperature in the incinerator actuating the cooling spray in the primary combustion chamber.

Claim 9

An incinerator for burning combustible waste material as defined in claim 6 including a limit switch on the door for the inlet opening to the primary combustion chamber, and means closing the modulating valve to the primary combustion chamber when said door is moved to an ''''open'''' position.