EP 0808078 A1 19971119 - Amorphous metallic alloy electrical heater system
Title (en)
Amorphous metallic alloy electrical heater system
Title (de)
Elektrische Heizvorrichtung mit amorphe Metallegierung
Title (fr)
Système de chauffage électrique comportant un alliage métallique amorphe
Publication
Application
Priority
EP 96107892 A 19960517
Abstract (en)
An electrical heating system uses heating elements made of ribbons of amorphous metallic alloys. The heating elements have a large area using long and wide ribbons, to achieve good heat transfer to the surroundings, that is low thermal resistance. The area of the heating elements and thus the thermal resistance is determined according to the desired thermal power, under the constraint of a low operating temperature, that is a temperature well below the embrittlement temperature of the amorphous alloy used in the heating elements. The operating temperature is preferably kept low enough so as not to generate benzopyrene or other unhealthy or ecologically unfavorable fumes or gases. The thin ribbons with low thermal resistance also have a fast heating constant, that is the heater reaches its steady state temperature in a short time. The electrical heating system uses low cost insulation and support materials, that is materials intended for use at low temperatures only. Further cost reduction is achieved by making the heating elements of lower cost alloys, that is alloys capable of withstanding oxidation only at low temperatures. The heating elements undergo treatment using the Manov process of overheating the melted alloy to a precise temperature prior to rapid quenching, to achieve more reliable ribbons with more reproducible characteristics. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
H05B 3/10 (2013.01); H05B 3/36 (2013.01); H05B 2203/003 (2013.01); H05B 2203/014 (2013.01); H05B 2203/017 (2013.01); H05B 2203/021 (2013.01); H05B 2203/022 (2013.01); H05B 2203/032 (2013.01)
Citation (search report)
- [A] EP 0295351 A1 19881221 - BEAUFEREY JEAN FRANCOIS
- [A] EP 0177669 A2 19860416 - ALLIED CORP [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 008, no. 098 (C - 221) 9 May 1984 (1984-05-09)
- [A] "MIT POLYIMID ISOLIERTE FOLIEN-HEIZELMENTE", PLASTVERARBEITER, vol. 34, no. 9, 1983, SPEYER/RHEIN; DE, pages 827 - 828, XP002016682
Designated contracting state (EPC)
DE DK ES FR GB IT SE
DOCDB simple family (publication)
EP 0808078 A1 19971119; EP 0808078 B1 20011004; DE 69615663 D1 20011108; DE 69615663 T2 20020620; DK 0808078 T3 20011217; ES 2163550 T3 20020201
DOCDB simple family (application)
EP 96107892 A 19960517; DE 69615663 T 19960517; DK 96107892 T 19960517; ES 96107892 T 19960517