Condensate isolator and drainage system for furnace
AssigneeInter-City Products Corporation (USA)
InventorsDavid B. Schumacher, William G. Manda
Life of this patent
Estimating the term…
Abstract
The present invention involves a gas furnace having a condensate trap formed in the transition box between the secondary heat exchanger and the exhaust blower. The gas furnace includes gas burners which burn fuel within the passageways of the heat exchanger are induced through its internal passageways by an exhaust blower. The transition box connects the heat exchangers with the exhaust blower and provides a location for condensate to collect for discharge through the integral condensate trap assembly. Also, the exhaust blower housing has drainage ports to convey condensate from the blower and vent back to the condensate trap.
Claims18
A gas furnace comprising:
- means for igniting a gaseous fuel and creating products of combustion;
- a heat exchanger for extracting heat from the products of combustion, said heat exchanger associated with said igniting means and defining a passageway for the products of combustion;
- an exhaust blower in fluid communication with said heat exchanger and arranged to draw the products of combustion through said heat exchanger;
- and
- a transition box assembly fluidly connecting said heat exchanger and said exhaust blower, said transition box assembly including a condensate entrance opening immediately adjacent to and in fluid connection with said exhaust blower through which said transition box assembly collects liquid condensate formed within or downstream of said exhaust blower, said transition box assembly including an integrated condensate trap for removing liquid condensate from said transition box assembly, said condensate trap including a barrier wall and a drainage hole, said barrier wall extending below said drainage hole to prevent the combustion gases from escaping through said drainage hole.
A system for collecting and draining condensate from a furnace having a condenser, said system comprising:
- blower means;
- and
- passage means between the condenser and said blower means, said passage means being adapted to convey combustion products and condensate from the condenser to said blower means, and also being adapted to collect the condensate conveyed and drain the condensate from the system, said passage means including a condensate entrance opening immediately adjacent to and in fluid connection with said blower means through which said passage means collects liquid condensate formed within or downstream of said blower means, said passage means including an integrated condensate trap assembly with a barrier wall and a drainage hole, said barrier wall extending below said drainage hole to prevent the combustion products from escaping through said drainage hole.
Dependencies are inferred from the claim text.