Apparatus for preventing dust accumulation in exhaust duct of an

Details Apparatus for preventing dust accumulation in exhaust duct of an Apparatus for preventing dust accumulation in exhaust duct of an

1993-11-03

1995-02-28

Reynolds, Bruce A.

Industrial electric heating furnaces

Environmental control

373 77, 373 80, 266144, F27D 1700

Patent

active

053944313

ABSTRACT:
A smoke suction duct of an electric furnace is constructed as a separate member from other exhaust duct portions and other devices and is supported to be rotatable about an axis of the duct. Further, the smoke suction duct is either alternately turned to right and left or continuously turned in one direction by a duct turning device. Since accumulating dust is raised to an upper portion of the smoke suction duct where an exhaust gas flow has a high velocity due to rotation of the smoke suction duct and is pushed toward a combustion tower by the exhaust gas flow, dust is advantageously prevented from accumulating on a bottom of the smoke suction duct.

REFERENCES:
patent: 2684392 (1954-07-01), Moore
patent: 3173980 (1965-03-01), Hysinger
patent: 3900696 (1975-08-01), Tress et al.

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