WO1989004109A1 - Induction cooking plate or hob - Google Patents

Induction cooking plate or hob Download PDF

Info

Publication number
WO1989004109A1
WO1989004109A1 PCT/SE1988/000572 SE8800572W WO8904109A1 WO 1989004109 A1 WO1989004109 A1 WO 1989004109A1 SE 8800572 W SE8800572 W SE 8800572W WO 8904109 A1 WO8904109 A1 WO 8904109A1
Authority
WO
WIPO (PCT)
Prior art keywords
coils
cooking
field
plate according
coil
Prior art date
Application number
PCT/SE1988/000572
Other languages
English (en)
French (fr)
Inventor
Claes Johan Henning Axelson
Original Assignee
Aktiebolaget Electrolux
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 Aktiebolaget Electrolux filed Critical Aktiebolaget Electrolux
Publication of WO1989004109A1 publication Critical patent/WO1989004109A1/en
Priority to NO901420A priority Critical patent/NO170120C/no
Priority to FI902154A priority patent/FI92008C/fi
Priority to DK105390A priority patent/DK169229B1/da

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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention refers to an induction cooking plate or hob as defined in the preamble of the appending claim 1.
  • the object of the invention is to eliminate or at least considerably reduce the leak field without any appreciable reduction of the useful field.
  • the object will be achieved in an induction cooking plate or hob having the characterizing features of claim 1. Preferred embodiments appear from the appending sub-claims.
  • Fig. 1 schematically shows a ceramic cooking hob.
  • Figs. 2-5 show four different arrangements of induction coils.
  • Figs. 6 and 7 show two different constructive embodiments of coils with coil cores.
  • Fig. 8 is a section along the line VIII - VIII in Fig. 6, and
  • FIG. 3 two plane coils 22, 23 have been coaxially disposed and here the cores have been designated 24 and 25. As shown by the arrows, the currents in the coils have opposite directions of flow.
  • Fig. 5 there is indicated the possibility of arranging several coils in matrix form. If the coils have a common winding as shown, the directions of the fields will be those indicated by plus and minus signs. I na field point far from the cooking hob the field contributions will essentially cancel out each other.
  • FIGs. 7 and 9 there is shown how in the same way as shown with referen ⁇ ce to Figs. 6 and 8 the embodiment of Fig. 3 can be realized.
  • a similar coil holder has a base plate 35, a peripheral edge 36 as well as a central core portion 37 and an annular core portion 38.
  • a magnetic coupling to the cooking-utensil per unit length of the wire in the coil equals the magnetic coupling in the single coil case according to Fig. 1.
  • the magnetic coupling is defined as the inductively transferred power per Ampere of current and per meter of wire and the magnetic coupling is also a measure of the efficiency.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • General Induction Heating (AREA)
  • Baking, Grill, Roasting (AREA)
PCT/SE1988/000572 1987-10-29 1988-10-27 Induction cooking plate or hob WO1989004109A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO901420A NO170120C (no) 1987-10-29 1990-03-28 Induksjonskokeplate eller- komfyr.
FI902154A FI92008C (fi) 1987-10-29 1990-04-27 Induktiokeittolevy tai -sivulevy
DK105390A DK169229B1 (da) 1987-10-29 1990-04-27 Induktionskoge- eller varmeplade

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8704224-8 1987-10-29
SE8704224A SE459541B (sv) 1987-10-29 1987-10-29 Induktionskokplatta eller -kokhaell

Publications (1)

Publication Number Publication Date
WO1989004109A1 true WO1989004109A1 (en) 1989-05-05

Family

ID=20370055

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000572 WO1989004109A1 (en) 1987-10-29 1988-10-27 Induction cooking plate or hob

Country Status (5)

Country Link
CH (1) CH676181A5 (da)
DK (1) DK169229B1 (da)
FI (1) FI92008C (da)
SE (1) SE459541B (da)
WO (1) WO1989004109A1 (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649576A1 (fr) * 1989-07-04 1991-01-11 Bonnet Sa Plaque de cuisson par chauffage par induction
DE19845844A1 (de) * 1998-10-05 2000-04-06 Bsh Bosch Siemens Hausgeraete Induktor für ein Induktions-Kochfeld
WO2009090108A1 (de) * 2008-01-14 2009-07-23 BSH Bosch und Siemens Hausgeräte GmbH Induktionsheizkörper mit einer kreisförmigen induktorspule

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142872A1 (de) * 1991-12-23 1993-06-24 Thomson Brandt Gmbh Verfahren und vorrichtung zum induktiven beheizen von behaeltern unterschiedlicher groesse
DE19500449A1 (de) * 1995-01-10 1996-07-11 Ego Elektro Blanc & Fischer Kochstellenbeheizung für Kochgefäße
DE10022865C2 (de) * 2000-05-10 2002-09-12 Werner Irnich Induktionskochmulde

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029926A (en) * 1974-10-29 1977-06-14 Roper Corporation Work coil for use in an induction cooking appliance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029926A (en) * 1974-10-29 1977-06-14 Roper Corporation Work coil for use in an induction cooking appliance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649576A1 (fr) * 1989-07-04 1991-01-11 Bonnet Sa Plaque de cuisson par chauffage par induction
DE19845844A1 (de) * 1998-10-05 2000-04-06 Bsh Bosch Siemens Hausgeraete Induktor für ein Induktions-Kochfeld
WO2009090108A1 (de) * 2008-01-14 2009-07-23 BSH Bosch und Siemens Hausgeräte GmbH Induktionsheizkörper mit einer kreisförmigen induktorspule
ES2335376A1 (es) * 2008-01-14 2010-03-25 Bsh Electrodomesticos España, S.A. Cuerpo de calentamiento por induccion con una bobina inductora circular.
ES2335376B1 (es) * 2008-01-14 2011-01-17 Bsh Electrodomesticos España, S.A. Cuerpo de calentamiento por induccion con una bobina inductora circular.
US8440944B2 (en) 2008-01-14 2013-05-14 Bsh Bosch Und Siemens Hausgeraete Gmbh Induction heater comprising a circular inductor coil

Also Published As

Publication number Publication date
DK105390A (da) 1990-04-27
FI92008B (fi) 1994-05-31
FI92008C (fi) 1994-09-12
SE8704224D0 (sv) 1987-10-29
SE8704224L (sv) 1989-04-30
DK169229B1 (da) 1994-09-12
FI902154A0 (fi) 1990-04-27
SE459541B (sv) 1989-07-10
DK105390D0 (da) 1990-04-27
CH676181A5 (da) 1990-12-14

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