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1. (WO1997017583) POWER CONTROL FOR FURNACE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017583 International Application No.: PCT/SE1996/001427
Publication Date: 15.05.1997 International Filing Date: 06.11.1996
Chapter 2 Demand Filed: 15.05.1997
IPC:
H05B 3/62 (2006.01)
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
3
Ohmic-resistance heating
62
Heating elements specially adapted for furnaces
Applicants:
SANDVIK AKTIEBOLAG (publ) [SE/SE]; S-811 81 Sandviken, SE
Inventors:
GUSTAVSSON, Frank; SE
Agent:
TÅQUIST, Lennart; Sandvik Aktiebolag (publ) Patent Dept. S-811 81 Sandviken, SE
Priority Data:
9503927-707.11.1995SE
Title (EN) POWER CONTROL FOR FURNACE
(FR) REGULATION DE PUISSANCE POUR FOUR
Abstract:
(EN) Power control of the heating process in a three-phase connected electric furnace by dividing the process into intervals and controlling the average power during these intervals. The power generation in a respective phase is separately controlled and the power control can in a simple way be implemented in existing and new furnaces without access to neutral wire.
(FR) L'invention porte sur une régulation de puissance du processus de chauffage dans un four électrique triphasé consistant à subdiviser le processus en intervalles et à agir sur la puissance moyenne pendant ces intervalles. La production d'énergie dans les phases respectives est commandée de manière distincte et la régulation de puissance peut s'exercer de façon simple dans des fours déjà existants comme dans de nouveaux fours sans avoir besoin d'accéder au conducteur neutre.
Designated States: JP
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0859939JP2000500269