ELECTRIC FURNACE

An electrically energizable heating coil having a plurality of convolutions about its longitudinal axis. The coil is kept from deforming by a tubular insulator split longitudinally in a plane corresponding with the longitudinal axis of the coil so that it comprises two half-cylinders. Avoiding defor...

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Bibliographische Detailangaben
Hauptverfasser:	MIZUSHINA Y,JA, SHIMAZAKI M,JA, IEDA M,JA
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY
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Beschreibung
Zusammenfassung:	An electrically energizable heating coil having a plurality of convolutions about its longitudinal axis. The coil is kept from deforming by a tubular insulator split longitudinally in a plane corresponding with the longitudinal axis of the coil so that it comprises two half-cylinders. Avoiding deformation allows uniform heat distribution by the coil. The tubular insulator is made of a thermosetting material and has a supporting radial rib axially thereof on one of half-cylinders along the full axial length of the coil. The rib is disposed in a plane normal to the first-mentioned plane so that in a horizontal position of the coil the rib is a principal support for the coil.