Flue terminal gas extractor

Details Flue terminal gas extractor Flue terminal gas extractor

1983-02-08

1986-08-05

Tapolcai, William E.

98 78, F23L 1702

Patent

active

046036199

ABSTRACT:
A flue terminal extractor mounted at the discharge end of a flue comprises a lower unit mounted coaxially on the flue and an upper unit coaxial with and spaced from the lower unit. The lower unit comprises a downwardly facing frustoconical lower base having a central opening through which the flue extends and an upwardly facing frustoconical lower bonnet joined at its outer periphery with the outer periphery of the lower base and having a central opening in which the flue terminates. The upper unit comprises a downwardly facing conical upper base and an upwardly facing conical upper bonnet. The area of the free space for outward flow of gas between the lower unit and the upper unit is at least equal to the cross sectional area of the flue.

REFERENCES:
patent: 211872 (1879-02-01), Van Noorden
patent: 3347147 (1967-10-01), Howard
patent: 3382792 (1968-05-01), Howard
patent: 3788072 (1974-01-01), Burger
patent: 3853042 (1974-12-01), Tobiasson
patent: 4184417 (1980-01-01), Chancellor
patent: 4206693 (1980-06-01), Mitchell

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