Furnace exhaust method and apparatus

Details Furnace exhaust method and apparatus Furnace exhaust method and apparatus

1999-06-04

2000-08-29

Hoang, Tu Ba

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

373110, 432120, F27D 1100

Patent

active

061112275

ABSTRACT:
An electrically heated furnace wherein electrical heating elements are mounted and supported so that they face the inner furnace walls and are isolated from direct communication with articles being treated within the furnace such that clean air flows over the heating elements providing oxygen to create an aluminum oxide coating on the heating elements and maintains a clean atmosphere about the heating elements. Air circulation from exterior the furnace is through ports in the furnace walls and over the electrical heating elements; exhaust from the furnace is through ports in the furnace walls into a plenum and out through a flue creating pressure differentials with the pressure in the furnace area where articles are being subjected to heat is lower than the atmosphere and the area in which the heating elements are located.

REFERENCES:
patent: 5378144 (1995-01-01), Cress
patent: 5674425 (1997-10-01), Hong
patent: 5694831 (1997-12-01), Haroun et al.
patent: 5756974 (1998-05-01), Hong

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