HEATER BUNDLES FOR THERMAL GRADIENT COMPENSATION

HEATER BUNDLES FOR THERMAL GRADIENT COMPENSATION

A heater bundle (12) includes a plurality of heater assemblies (18), at least one of the heater assemblies (18) including a plurality of heater units, at least one of the heater units defining at least one independently controlled heating zone. A thermal provision is configured to modify a thermal c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: EVERLY, Mark
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Beschreibung
Zusammenfassung:A heater bundle (12) includes a plurality of heater assemblies (18), at least one of the heater assemblies (18) including a plurality of heater units, at least one of the heater units defining at least one independently controlled heating zone. A thermal provision is configured to modify a thermal conductance along a length of the at least one heater assembly (18) to compensate for non-uniform temperatures within at least one heater unit. The heater bundle (12) includes a power supply device (14) including a controller (15) configured to modulate power to the independently controlled heating zone through the power conductors based on the determined temperature to provide a desired power output along a length of at least one heater assembly (18).