Drain for condensate from flue gas

Details Drain for condensate from flue gas Drain for condensate from flue gas

1984-11-13

1986-09-16

Bennett, Henry

Fluid handling

Siphons

With flow starting, stopping or maintaining means

137142, 237 55, B08B 300

Patent

active

046116222

ABSTRACT:
For use with a hydrocarbon-fueled furnace whose secondary heat exchanger so cools the combusted gas as to condense much of its water vapor, and having a blower to the flue, a combined trap and drain is provided for the condensate formed both in the heat exchanger and in the flue. At the base of the flue is a standpipe whose upper overflow outlet is connected to a dip tube. Between the level of its lower end and the overflow level is a side inlet into the standpipe, connected to a tube leading downward from the heat exchanger's condenser. When the furnace blower applies both negative pressure to the condenser and positive pressure to the flue, the water levels in the trap and tube adjust to balance out these pressures.

REFERENCES:
patent: 4309947 (1982-01-01), Ketterer
patent: 4372487 (1983-02-01), Hollister
patent: 4403572 (1983-09-01), Gerstmann et al.

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