| 摘要 |
<p>The present invention provides heating elements (200) and methods for their fabrication and use. The heating elements of this invention include a spirally shaped structure having a plurality of spiral forms, and may contain a thermally conductive, electrically insulated polymeric coating, such as a fluorocarbon resinous coating of about .001-.020 in. in thickness. The preferred spirally shaped heating elements of this invention provide a lower, preferably substantially lower, flux or watt density than that for a Tubular Heating Element of substantially similar Active Element Volume, wherein said spirally shaped heating element has the same or greater overall wattage rating (total watts) than the Tubular Heating Element.</p> |
