Air intake for furnace

Details Air intake for furnace Air intake for furnace

1993-07-09

1994-05-24

Dority, Carroll B.

Stoves and furnaces

Hot-air furnaces

Liquid or gaseous fuel

126110R, F24H 300

Patent

active

053139305

ABSTRACT:
An induced flow condenser furnace has a combustion air intake shoe that connects the combustion air pipe to the burner box, and has a provision for draining off any condensate from the combustion air pipe before it reaches the burner box. The shoe has a tray portion with an open top that mates with an intake opening in one wall of the burner box, and a tube portion that connects at one end with the combustion air pipe and at the other end with an end cap. The latter has a drain nipple to permit escape of the condensate. An internal lip is formed in the tube portion traps condensate when the furnace is poised in an inverted or downflow orientation. This permits the furnace to be poised in any of four orientations. The intake shoe facilitates connection of the inlet pipe and drain tube in all multi-poise configurations.

REFERENCES:
patent: 4653466 (1987-03-01), DeHaan et al.
patent: 4960102 (1990-10-01), Shellenberger
patent: 5097819 (1992-03-01), Talbert et al.

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