F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
110/45
F23L 5/00 (2006.01) F23J 3/00 (2006.01) F23L 9/00 (2006.01) F23L 13/02 (2006.01)
Patent
CA 1311651
Abstract Removable apparatus for regulating air flow through an air port in a chemical recovery furnace. A plenum mounted adjacent an air port inside a wind box associated with the furnace supplies combustion air from the wind box to the furnace through the air port, and an adjustable damper mounted inside the plenum regulates the velocity and quantity of air flowing through the plenum. An access port in the plenum allows viewing of the air port opening through the plenum. An actuating mechanism with- draws the damper from the field of view to a retracted position wherein the damper depends from the top of the plenum chamber spaced apart from the air port opening. For airflow damping, the actuating mechanism moves the retracted damper toward the air port opening until the damper is adjacent to the the opening; then a positioning mechanism pivots the damper to a predetermined position in the air stream adjacent the opening. The damper positioning mechanism comprises a spring loaded cylinder that holds the damper by spring tension, when retracted, above the flow of air through the plenum chamber. Upon further compres- sion of the cylinder by the actuating mechanism, the reduced length of the compressed cylinder forces the damper downward into the air stream. When the actuating mechanism is reversed, the spring tension of the compressed cylinder pulls the damper upward to the retracted position.
600713
Goodspeed Byron L.
Ross Thomas W.
Anthony-Ross Company
Goodspeed Byron L.
Oyen Wiggs Green & Mutala Llp
Ross Thomas W.
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