EP0725557A1 - Heizvorrichtung - Google Patents

Heizvorrichtung Download PDF

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Publication number
EP0725557A1
EP0725557A1 EP96200230A EP96200230A EP0725557A1 EP 0725557 A1 EP0725557 A1 EP 0725557A1 EP 96200230 A EP96200230 A EP 96200230A EP 96200230 A EP96200230 A EP 96200230A EP 0725557 A1 EP0725557 A1 EP 0725557A1
Authority
EP
European Patent Office
Prior art keywords
heating device
ceramic layer
foregoing
substrate
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.)
Withdrawn
Application number
EP96200230A
Other languages
English (en)
French (fr)
Inventor
Leonardus Johannes Maria Krul
Maarten Josephus Stottelaar
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.)
Atag Keukentechniek BV
Original Assignee
Atag Keukentechniek BV
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 Atag Keukentechniek BV filed Critical Atag Keukentechniek BV
Publication of EP0725557A1 publication Critical patent/EP0725557A1/de
Withdrawn legal-status Critical Current

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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
    • H05B3/20—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
    • H05B3/262—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an insulated metal plate
    • 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

Definitions

  • the invention relates to a heating device, which comprising: a substrate; a ceramic layer covering the substrate; electric heating means; detection means for detecting temperature; and a control circuit for controlling the heating means on the basis of the temperature detection.
  • Such a heating device is known wherein the heating means and the detection means are placed at a distance from the surface of the heating device to be heated.
  • the substrate is herein usually manufactured from metal wherein uniform conduction of heat to the surface to be heated is achieved through the metal substrate.
  • the distance of the heating means and the detection means to the surface to be heated has the drawback that only after a relatively long time has elapsed can the control circuit bring about required changes in the temperature of the surface to be heated by controlling the amount of power running to the heating means.
  • the control circuit bring about required changes in the temperature of the surface to be heated by controlling the amount of power running to the heating means.
  • the heating device as grill plate in the catering sector and large-scale kitchen applications, it is necessary to have the heating device functioning continually while no use is being made thereof for long periods. A high energy consumption is the result.
  • a further drawback of this existing technology is that the energy consumption of a heating device according to this known art is also very high since the entire substrate and the surface to be heated of the heating device are heated, while heating of only a portion of the surface is necessary. This is particularly the case when such a heating device is used as grill plate in the preparation of food, in particular meat products.
  • the invention has for its object to obviate the above stated drawbacks, and provides to this end a heating device which is distinguished in that the heating means are formed by at least one resistance strip which is arranged on the ceramic layer.
  • a heating device is further distinguished in that the detection means comprise at least one thermal strip which is arranged on the ceramic layer in the vicinity of the resistance strip.
  • Another property of a heating device according to the present invention is that it contains at least two separate areas which are controlled by the control circuit and which each have at least one resistance strip and detection means.
  • the heating means and the detection means are arranged very close to the surface to be heated and close to each other, whereby the control circuit can bring about very rapidly the required changes in the temperature of the surface to be heated of the heating device.
  • a further advantage is that the temperature of separate areas of the surface to be heated can be controlled by the control circuit, whereby no longer the entire surface is heated, which produces considerable energy saving.
  • the embodiment of a grill plate according to the known art shown in fig. 1 comprises: a substrate 1 manufactured from metal; a heat conducting protective layer 2; heating means designed as heating element 3; a power cable 4; and a control circuit with a thermostat button 5.
  • the heating element 3 is situated in the substrate. In other embodiments the heating element is pressed against the underside of the substrate. The degree of heating is adjustable using the thermostat button 5 with which the amount of power carried through the power cable 4 is adjusted.
  • the heating element 3 heats the whole substrate 1, wherein the heat spreads through substrate 1 and therefore heat is likewise conducted to the top surface of the heating device, on which surface preparation of food takes place, in particular the grilling or frying of meat products.
  • the grill plate shown in fig. 2 comprises: a substrate 1 of steel; a ceramic layer 10 covering the substrate 1; resistance strips 13; a thermal strip 12; and a protective layer 2.
  • the ceramic layer 10 covers substrate 1 completely, wherein conductor strips 11, thermal strips 12 and resistance strips 13 are arranged on the ceramic layer 10 by means of a screen-printing technique.
  • the strips 11, 12 and 13 on the ceramic layer 10 are further covered by a protective layer 2.
  • the power supplied via the power cable 4 is transmitted through the resistance strips 13 via the conductor strips 11.
  • the amount of this current is controlled by the control circuit (not shown) which is placed behind the control panel 15.
  • the thermal strip 12 provides the control circuit with the data relating to the temperature of the heating device necessary for controlling the current.
  • Fig. 3 shows in detail the above described construction of the heating device.
  • the substrate 1 is completely covered with a ceramic layer 10 which is arranged on the substrate using a spray technique or using an immersion technique in accordance with the electrophoresis principle.
  • the substrate 1 is manufactured from vitreous steel or stainless steel and the ceramic layer 10 is preferably produced from the enamel material elpor.
  • the strips 11, 12 and 13 are preferably arranged on the enamel layer 10 by means of a screen-printing technique.
  • the conductor strips 11 are formed in this embodiment by the conducting paste palladium-silver, but can likewise be made of conducting pastes of for example silver, gold or nickel.
  • the thermal strip is preferably formed using a PTC paste, wherein it should be noted that other materials can also be used.
  • the surface of the heating device for heating is divided into a number of areas, wherein each area is provided with separate conductor strips, resistance strips and one or more than one thermal strip.
  • the control circuit is herein adapted such that it controls the power to each area on the basis of the temperature of the relevant area, and therefore controls the temperature in this area of the heating device.
  • a separate control circuit is provided for each area.
  • holes are arranged through the substrate 1 through which wiring is placed for connecting the conducting strips, resistance strips and thermal strips to the control circuit.
  • the connections of the wiring and the strips can be effected herein by means of a soldering technique or by means of conducting epoxy or polyamide glues.
  • the enamelled substrate is provided on both sides with conducting strips, resistance strips and thermal strips, the inside of each hole through the substrate is likewise enamelled, wherein the strips run through the enamelled holes to the other side.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Baking, Grill, Roasting (AREA)
  • Control Of Resistance Heating (AREA)
EP96200230A 1995-02-02 1996-02-02 Heizvorrichtung Withdrawn EP0725557A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9500196A NL9500196A (nl) 1995-02-02 1995-02-02 Verwarmingsinrichting.
NL9500196 1995-02-02

Publications (1)

Publication Number Publication Date
EP0725557A1 true EP0725557A1 (de) 1996-08-07

Family

ID=19865534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96200230A Withdrawn EP0725557A1 (de) 1995-02-02 1996-02-02 Heizvorrichtung

Country Status (2)

Country Link
EP (1) EP0725557A1 (de)
NL (1) NL9500196A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019499A1 (en) * 1996-10-31 1998-05-07 Delta Theta Limited Heating element with a plurality of parallel tracks mounted on a substrate
EP0901311A3 (de) * 1997-09-02 1999-06-09 GKR Gesellschaft für Fahrzeugklimaregelung mbH Elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug
FR2841154A1 (fr) * 2002-06-19 2003-12-26 Electricite De France Agitateur rotatif a surface chauffante pour milieu liquide, pulverulent ou pateux

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187836A (en) * 1986-03-11 1987-09-16 Thorn Emi Appliances Cooking hob
EP0286217A1 (de) * 1987-02-25 1988-10-12 THORN EMI plc Bahnen aus starkem Film mit elektrischem Widerstand
EP0286216A1 (de) * 1987-02-25 1988-10-12 THORN EMI plc Grundlage zum Tragen elektrischer Bahnen und/oder Komponenten
DE3833293A1 (de) * 1987-10-01 1989-04-20 Interconnection B V Heizelement
EP0353063A2 (de) * 1988-07-29 1990-01-31 Emaco Ltd. Kochgeräte
EP0381792A1 (de) * 1987-08-26 1990-08-16 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Kochgerät
DE4028354A1 (de) * 1989-09-06 1991-03-07 Interconnection B V Heizungselement und system, das ein solches heizungselement umfasst

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187836A (en) * 1986-03-11 1987-09-16 Thorn Emi Appliances Cooking hob
GB2230852A (en) * 1986-03-11 1990-10-31 Electrolux Ltd Cooking hob
EP0286217A1 (de) * 1987-02-25 1988-10-12 THORN EMI plc Bahnen aus starkem Film mit elektrischem Widerstand
EP0286216A1 (de) * 1987-02-25 1988-10-12 THORN EMI plc Grundlage zum Tragen elektrischer Bahnen und/oder Komponenten
EP0381792A1 (de) * 1987-08-26 1990-08-16 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Kochgerät
DE3833293A1 (de) * 1987-10-01 1989-04-20 Interconnection B V Heizelement
EP0353063A2 (de) * 1988-07-29 1990-01-31 Emaco Ltd. Kochgeräte
DE4028354A1 (de) * 1989-09-06 1991-03-07 Interconnection B V Heizungselement und system, das ein solches heizungselement umfasst

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019499A1 (en) * 1996-10-31 1998-05-07 Delta Theta Limited Heating element with a plurality of parallel tracks mounted on a substrate
EP0901311A3 (de) * 1997-09-02 1999-06-09 GKR Gesellschaft für Fahrzeugklimaregelung mbH Elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug
EP1530405A2 (de) 1997-09-02 2005-05-11 Behr GmbH & Co. KG Elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug
EP1492384A3 (de) * 1997-09-02 2005-12-07 Behr GmbH & Co. KG Elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug
EP1530405A3 (de) * 1997-09-02 2007-04-18 Behr GmbH & Co. KG Elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug
FR2841154A1 (fr) * 2002-06-19 2003-12-26 Electricite De France Agitateur rotatif a surface chauffante pour milieu liquide, pulverulent ou pateux

Also Published As

Publication number Publication date
NL9500196A (nl) 1996-09-02

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