EP0269415A3 - Induction heating circuits forcooking appliances - Google Patents

Induction heating circuits forcooking appliances Download PDF

Info

Publication number
EP0269415A3
EP0269415A3 EP87310359A EP87310359A EP0269415A3 EP 0269415 A3 EP0269415 A3 EP 0269415A3 EP 87310359 A EP87310359 A EP 87310359A EP 87310359 A EP87310359 A EP 87310359A EP 0269415 A3 EP0269415 A3 EP 0269415A3
Authority
EP
European Patent Office
Prior art keywords
energisation
pan
induction heating
forcooking
appliances
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.)
Withdrawn
Application number
EP87310359A
Other languages
German (de)
French (fr)
Other versions
EP0269415A2 (en
Inventor
Julian Coppin
Francis Downham
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.)
Creda Ltd
Original Assignee
Creda Ltd
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 Creda Ltd filed Critical Creda Ltd
Publication of EP0269415A2 publication Critical patent/EP0269415A2/en
Publication of EP0269415A3 publication Critical patent/EP0269415A3/en
Withdrawn legal-status Critical Current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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power

Abstract

In an induction heating circuit for a cooking appliance, a pan sensing circuit (7) responds to current flow through a pan heating coil (L2) and inhibits the turning-on of a gate turn-off thryistor (VT1) controlling energisation of the pan coil (L2). In the event that the sensing circuit (7) indicates that a suitable utensil is located over the pan coil (L2), energisation of the latter is allowed, otherwise energisation is inhibited. An interrogation circuit (11) allows energisation at preset intervals during which sensing continues.
EP87310359A 1986-11-25 1987-11-24 Induction heating circuits forcooking appliances Withdrawn EP0269415A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8628100A GB2197999B (en) 1986-11-25 1986-11-25 Improvements in or relating to induction heating circuits for cooking appliances
GB8628100 1986-11-25

Publications (2)

Publication Number Publication Date
EP0269415A2 EP0269415A2 (en) 1988-06-01
EP0269415A3 true EP0269415A3 (en) 1989-01-11

Family

ID=10607865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87310359A Withdrawn EP0269415A3 (en) 1986-11-25 1987-11-24 Induction heating circuits forcooking appliances

Country Status (2)

Country Link
EP (1) EP0269415A3 (en)
GB (1) GB2197999B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210792A (en) * 1976-07-27 1980-07-01 Tokyo Shibaura Electric Co., Ltd. Induction heating apparatus with load detecting and control circuit
DE3445538A1 (en) * 1983-12-14 1985-06-27 Sanyo Electric Co., Ltd., Moriguchi, Osaka Induction heating apparatus
DE3447865A1 (en) * 1984-07-26 1986-02-06 Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa INDUCTION HEATER

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421983B2 (en) * 1974-02-05 1979-08-03
GB1454598A (en) * 1974-07-02 1976-11-03 Cunningham R J Load controlled induction heating
GB1529114A (en) * 1977-03-31 1978-10-18 Diamond Controls Ltd H Power supply circuits
US4438311A (en) * 1979-07-05 1984-03-20 Sanyo Electric Co., Ltd. Induction heating cooking apparatus
US4352000A (en) * 1979-08-10 1982-09-28 Sanyo Electric Co., Ltd. Induction heating cooking apparatus
JPS5652890A (en) * 1979-10-01 1981-05-12 Sony Corp Electromagnetic induction heating cooking device
US4429205A (en) * 1980-01-28 1984-01-31 Roper Corporation Induction heating apparatus
US4885447A (en) * 1985-01-23 1989-12-05 Balay, S.A. System for the induction heating of the electric plates of a cooker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210792A (en) * 1976-07-27 1980-07-01 Tokyo Shibaura Electric Co., Ltd. Induction heating apparatus with load detecting and control circuit
DE3445538A1 (en) * 1983-12-14 1985-06-27 Sanyo Electric Co., Ltd., Moriguchi, Osaka Induction heating apparatus
DE3447865A1 (en) * 1984-07-26 1986-02-06 Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa INDUCTION HEATER

Also Published As

Publication number Publication date
GB8628100D0 (en) 1986-12-31
GB2197999B (en) 1991-01-09
GB2197999A (en) 1988-06-02
EP0269415A2 (en) 1988-06-01

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Legal Events

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Owner name: CREDA LIMITED

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Effective date: 19900618

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18D Application deemed to be withdrawn

Effective date: 19920428

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Inventor name: COPPIN, JULIAN

Inventor name: DOWNHAM, FRANCIS