WO2000010364A3 - Improvements relating to electric heating elements - Google Patents

Improvements relating to electric heating elements Download PDF

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Publication number
WO2000010364A3
WO2000010364A3 PCT/GB1999/002664 GB9902664W WO0010364A3 WO 2000010364 A3 WO2000010364 A3 WO 2000010364A3 GB 9902664 W GB9902664 W GB 9902664W WO 0010364 A3 WO0010364 A3 WO 0010364A3
Authority
WO
WIPO (PCT)
Prior art keywords
track
ptcr
temperature
resistance
main heater
Prior art date
Application number
PCT/GB1999/002664
Other languages
French (fr)
Other versions
WO2000010364A2 (en
Inventor
Robert Andrew O'neill
Original Assignee
Otter Controls Ltd
Oneill Robert Andrew
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 Otter Controls Ltd, Oneill Robert Andrew filed Critical Otter Controls Ltd
Priority to DE69909654T priority Critical patent/DE69909654T2/en
Priority to EP99939537A priority patent/EP1145598B1/en
Priority to AT99939537T priority patent/ATE245335T1/en
Priority to AU53806/99A priority patent/AU5380699A/en
Publication of WO2000010364A2 publication Critical patent/WO2000010364A2/en
Publication of WO2000010364A3 publication Critical patent/WO2000010364A3/en

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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0213—Switches using bimetallic 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0269—For heating of fluids
    • 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
    • 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
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Abstract

Thick film heating elements can cause problems if associated water heating vessels are used on a sloping surface so that if the vessel boils dry an elevated part of the heating element is first exposed to overheating and self-destructs. To protect against this the invention proposes to divide the heating element track into parallel-connected main heater and sensor portions, the sensor portion surrounding the main heater portion and comprising a plurality of parallel-connected track portions having NTCR (negative temperature coefficient of resistance) characteristics and connected in series therewith a track portion having a PTCR (positive temperature coefficient resistance) characteristic. By virtue of this arrangement, if one of the NTCR track portions begins to boil dry, so its temperature will increase and its resistance reduce so that more current flow through the PTCR track portion and its temperature rises. With a bimetallic thermally-responsive control arranged to sense the temperature of the PTCR track portion and to switch off at least the main heater portion if it overheats, effective control of the heater operation can be achieved by use of a bimetallic control.
PCT/GB1999/002664 1998-08-12 1999-08-12 Improvements relating to electric heating elements WO2000010364A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69909654T DE69909654T2 (en) 1998-08-12 1999-08-12 IMPROVEMENTS ON ELECTRIC HEATING ELEMENTS
EP99939537A EP1145598B1 (en) 1998-08-12 1999-08-12 Improvements relating to electric heating elements
AT99939537T ATE245335T1 (en) 1998-08-12 1999-08-12 IMPROVEMENTS TO ELECTRIC HEATING ELEMENTS
AU53806/99A AU5380699A (en) 1998-08-12 1999-08-12 Improvements relating to electric heating elements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9817594.6 1998-08-12
GB9817594A GB2340713B (en) 1998-08-12 1998-08-12 Improvements relating to electric heating elements

Publications (2)

Publication Number Publication Date
WO2000010364A2 WO2000010364A2 (en) 2000-02-24
WO2000010364A3 true WO2000010364A3 (en) 2001-11-08

Family

ID=10837151

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/002664 WO2000010364A2 (en) 1998-08-12 1999-08-12 Improvements relating to electric heating elements

Country Status (7)

Country Link
EP (1) EP1145598B1 (en)
CN (1) CN1143596C (en)
AT (1) ATE245335T1 (en)
AU (1) AU5380699A (en)
DE (1) DE69909654T2 (en)
GB (1) GB2340713B (en)
WO (1) WO2000010364A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2851404A1 (en) * 2003-02-18 2004-08-20 Acome Soc Coop Travailleurs Heating device for e.g. personal heating application, has device for limiting current crossing heating cable and includes resistive unit that is chosen such that its resistance is negligible when cable has reached its stable mode
GB0700079D0 (en) * 2007-01-04 2007-02-07 Boardman Jeffrey A method of producing electrical resistance elements whihc have self-regulating power output characteristics by virtue of their configuration and the material
PL2106195T3 (en) 2008-03-28 2010-09-30 Braun Gmbh Heating element with temperature sensor
PL2106194T3 (en) * 2008-03-28 2014-05-30 Braun Gmbh Heating element with temperature control
GB2460833B (en) * 2008-06-09 2011-05-18 2D Heat Ltd A self-regulating electrical resistance heating element
GB0911410D0 (en) * 2009-07-01 2009-08-12 Mantock Paul L A low power electric heating system
DE102011002861A1 (en) * 2011-01-19 2012-07-19 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with at least one heater for heating circulating liquid
CN110197749B (en) * 2018-02-27 2022-03-22 香港理工大学 Integrated heater and temperature sensing method thereof
KR102110417B1 (en) 2018-08-21 2020-05-13 엘지전자 주식회사 Electric Heater
KR102177948B1 (en) 2018-10-16 2020-11-12 엘지전자 주식회사 Electric Heater
CN109688645B (en) * 2019-01-24 2021-08-10 广西桂仪科技有限公司 Ceramic thick film hair straightening heater and preparation process thereof
DE102020115017A1 (en) * 2020-06-05 2021-12-09 Eugen Forschner Gmbh ELECTRICAL CIRCUIT FOR A FLUID LINE SYSTEM
CN112747832B (en) * 2020-12-24 2022-04-12 华中科技大学 Heating and self-temperature-feeding fusion type sensor and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185161A (en) * 1985-12-09 1987-07-08 Otter Controls Ltd Controls for electrical heating elements of water heaters
US4849611A (en) * 1985-12-16 1989-07-18 Raychem Corporation Self-regulating heater employing reactive components
EP0427433A2 (en) * 1989-11-04 1991-05-15 Ceramaspeed Limited Radiant electric heaters
DE4317040A1 (en) * 1993-05-21 1994-04-28 Schott Glaswerke Glass ceramic hob with temperature display - has alphabetic display of state of hot plate, activated by temperature sensors beneath hot plate
EP0715483A2 (en) * 1994-11-30 1996-06-05 Strix Limited Electric heaters

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228396A (en) * 1989-02-20 1990-08-22 Emaco Electric hotplate
JPH06342686A (en) * 1993-06-01 1994-12-13 Matsushita Electric Ind Co Ltd Electric heating device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185161A (en) * 1985-12-09 1987-07-08 Otter Controls Ltd Controls for electrical heating elements of water heaters
US4849611A (en) * 1985-12-16 1989-07-18 Raychem Corporation Self-regulating heater employing reactive components
EP0427433A2 (en) * 1989-11-04 1991-05-15 Ceramaspeed Limited Radiant electric heaters
DE4317040A1 (en) * 1993-05-21 1994-04-28 Schott Glaswerke Glass ceramic hob with temperature display - has alphabetic display of state of hot plate, activated by temperature sensors beneath hot plate
EP0715483A2 (en) * 1994-11-30 1996-06-05 Strix Limited Electric heaters

Also Published As

Publication number Publication date
EP1145598A2 (en) 2001-10-17
EP1145598B1 (en) 2003-07-16
ATE245335T1 (en) 2003-08-15
CN1344482A (en) 2002-04-10
CN1143596C (en) 2004-03-24
DE69909654D1 (en) 2003-08-21
GB2340713A (en) 2000-02-23
WO2000010364A2 (en) 2000-02-24
AU5380699A (en) 2000-03-06
EP1145598A3 (en) 2002-09-11
DE69909654T2 (en) 2004-04-15
GB9817594D0 (en) 1998-10-07
GB2340713B (en) 2003-03-12

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