EP0335617A3 - Current source limitation for thick film heating elements - Google Patents

Current source limitation for thick film heating elements Download PDF

Info

Publication number
EP0335617A3
EP0335617A3 EP19890302961 EP89302961A EP0335617A3 EP 0335617 A3 EP0335617 A3 EP 0335617A3 EP 19890302961 EP19890302961 EP 19890302961 EP 89302961 A EP89302961 A EP 89302961A EP 0335617 A3 EP0335617 A3 EP 0335617A3
Authority
EP
European Patent Office
Prior art keywords
track
thick film
current source
heating elements
film heating
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP19890302961
Other languages
German (de)
French (fr)
Other versions
EP0335617B1 (en
EP0335617A2 (en
Inventor
Simon Neville Balderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thorn EMI PLC
Original Assignee
Thorn EMI PLC
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 Thorn EMI PLC filed Critical Thorn EMI PLC
Priority to AT89302961T priority Critical patent/ATE98082T1/en
Publication of EP0335617A2 publication Critical patent/EP0335617A2/en
Publication of EP0335617A3 publication Critical patent/EP0335617A3/en
Application granted granted Critical
Publication of EP0335617B1 publication Critical patent/EP0335617B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/005—Heaters using a particular layout for the resistive material or resistive elements using multiple resistive elements or resistive zones isolated from each other
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/019—Heaters using heating elements having a negative temperature coefficient

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

A heating element (1) comprises a plurality of thick film electrically resistive tracks (2, 4, 6), of which at least one has a temperature coefficient of resistance in excess of 0.006 per degree C. A first track (2) is for electrical connection to a power supply. Means (12, 14) for electrically connecting the first track (2) to a second track (4, 6) comprise a component which depends on temperature such that, in use, the current flowing in the second track (4, 6) increases with the temperature of the first track (2).
EP89302961A 1988-03-25 1989-03-23 Current source limitation for thick film heating elements Expired - Lifetime EP0335617B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89302961T ATE98082T1 (en) 1988-03-25 1989-03-23 CURRENT LIMITATION FOR THICK FILM HEATING ELEMENTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8807139 1988-03-25
GB888807139A GB8807139D0 (en) 1988-03-25 1988-03-25 Current source limitation for thick film heating elements

Publications (3)

Publication Number Publication Date
EP0335617A2 EP0335617A2 (en) 1989-10-04
EP0335617A3 true EP0335617A3 (en) 1991-03-20
EP0335617B1 EP0335617B1 (en) 1993-12-01

Family

ID=10634106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89302961A Expired - Lifetime EP0335617B1 (en) 1988-03-25 1989-03-23 Current source limitation for thick film heating elements

Country Status (4)

Country Link
EP (1) EP0335617B1 (en)
AT (1) ATE98082T1 (en)
DE (1) DE68911008T2 (en)
GB (1) GB8807139D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2049180B1 (en) * 1992-09-17 1996-11-01 Eika S Coop Ltda IMPROVEMENTS IN RADIANT HEATERS.
GB9423901D0 (en) * 1994-11-26 1995-01-11 Pifco Ltd Improvements to thick film elements
GB2307385B (en) * 1995-11-17 2000-05-24 Ceramaspeed Ltd Radiant electric heater
GB2307384B (en) * 1995-11-17 2000-05-24 Ceramaspeed Ltd Infra-red heater
GB2363046B (en) * 2000-05-30 2005-01-26 Otter Controls Ltd Improvements relating to electric heating emlements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777930A (en) * 1954-04-28 1957-01-15 Nathanson Max Heating unit
US3396055A (en) * 1965-04-16 1968-08-06 Vitreous Steel Products Compan Radiant heating panels and resistive compositions for the same
EP0208823A1 (en) * 1985-07-15 1987-01-21 Kanthal AB Electrical resistance heating element
EP0227405A2 (en) * 1985-12-16 1987-07-01 RAYCHEM CORPORATION (a Delaware corporation) Self-regulating heater employing reactive components

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777930A (en) * 1954-04-28 1957-01-15 Nathanson Max Heating unit
US3396055A (en) * 1965-04-16 1968-08-06 Vitreous Steel Products Compan Radiant heating panels and resistive compositions for the same
EP0208823A1 (en) * 1985-07-15 1987-01-21 Kanthal AB Electrical resistance heating element
EP0227405A2 (en) * 1985-12-16 1987-07-01 RAYCHEM CORPORATION (a Delaware corporation) Self-regulating heater employing reactive components

Also Published As

Publication number Publication date
DE68911008T2 (en) 1994-06-16
GB8807139D0 (en) 1988-04-27
ATE98082T1 (en) 1993-12-15
EP0335617B1 (en) 1993-12-01
EP0335617A2 (en) 1989-10-04
DE68911008D1 (en) 1994-01-13

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