| US 7,520,746 B1 | ||
| Annealing furnace cooling and purging system and method | ||
| Gwynne Johnston, Barrrington Hills, Ill. (US); and Michael E. Kubis, Lake Villa, Ill. (US) | ||
| Assigned to Temple Steel Company, Chicago, Ill. (US) | ||
| Filed on Jun. 05, 2007, as Appl. No. 11/758,092. | ||
| Int. Cl. F27B 9/02 (2006.01); B32B 15/01 (2006.01) | ||
| U.S. Cl. 432—128 [432/152; 148/516; 266/252] | 30 Claims |
| 1. An electrical device steel lamination annealing furnace, comprising:
a lamination high heat section followed by a lamination cooling section, a lamination purge vestibule, and a lamination oxidation
section;
a conveyor running from the high heat section through the cooling section, purge vestibule, and oxidation section;
the conveyor carrying electrical device steel laminations being annealed which are first heated and then cooled in a plurality
of trays;
the cooling section having a plurality of atmosphere injection tubes each having a plurality of atmosphere injection jets,
the injection jets being beneath the conveyor and spaced in close proximity to the trays on the conveyor and positioned to
blow directly onto the trays from below the trays on the conveyor;
the cooling section also having at least one atmosphere extraction tube lying above the conveyor and positioned to extract
atmosphere in a region of the conveyor above where said injection jets are located; and
a fan having an output connected to said atmosphere injection tubes and an input connected to the atmosphere extraction tubes.
|