Flue insert to control exhaust gases

Details Flue insert to control exhaust gases Flue insert to control exhaust gases

1993-08-31

1997-09-16

Yeung, James C.

Stoves and furnaces

Stovepipes

126297, 1221552, F23J 1100

Patent

active

056669429

ABSTRACT:
A flue insert which includes a helical vane having an open center axial area and means for mounting the helical vane within a furnace flue stack. The helical vane rotates counterclockwise, i.e. it rotates in a counterclockwise direction from the furnace/boiler end to the atmospheric end of the flue. The helical vane rotates for approximately 540.degree., and has a width which is equal to approximately one-third of the diameter of the flue.

REFERENCES:
patent: 600910 (1898-03-01), Elmendorf
patent: 799120 (1905-09-01), Way
patent: 1332746 (1920-03-01), Oberg
patent: 4953535 (1990-09-01), Hagan

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