WO2002053989A3 - Flexible spirally shaped heating element - Google Patents

Flexible spirally shaped heating element Download PDF

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Publication number
WO2002053989A3
WO2002053989A3 PCT/US2002/000303 US0200303W WO02053989A3 WO 2002053989 A3 WO2002053989 A3 WO 2002053989A3 US 0200303 W US0200303 W US 0200303W WO 02053989 A3 WO02053989 A3 WO 02053989A3
Authority
WO
WIPO (PCT)
Prior art keywords
heating element
spirally shaped
heating elements
shaped heating
tubular
Prior art date
Application number
PCT/US2002/000303
Other languages
French (fr)
Other versions
WO2002053989A2 (en
Inventor
Arx Theodore Von
Clifford D Tweedy
Keith Laken
Original Assignee
Watlow Polymer Technologies
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Watlow Polymer Technologies filed Critical Watlow Polymer Technologies
Publication of WO2002053989A2 publication Critical patent/WO2002053989A2/en
Publication of WO2002053989A3 publication Critical patent/WO2002053989A3/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)

Abstract

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.
PCT/US2002/000303 2001-01-08 2002-01-08 Flexible spirally shaped heating element WO2002053989A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/756,162 2001-01-08
US09/756,162 US6539171B2 (en) 2001-01-08 2001-01-08 Flexible spirally shaped heating element

Publications (2)

Publication Number Publication Date
WO2002053989A2 WO2002053989A2 (en) 2002-07-11
WO2002053989A3 true WO2002053989A3 (en) 2002-08-08

Family

ID=25042284

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/000303 WO2002053989A2 (en) 2001-01-08 2002-01-08 Flexible spirally shaped heating element

Country Status (2)

Country Link
US (3) US6539171B2 (en)
WO (1) WO2002053989A2 (en)

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US20020090209A1 (en) 2002-07-11
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US6744978B2 (en) 2004-06-01
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