EP0639743B1 - Table de cuisson - Google Patents

Table de cuisson Download PDF

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Publication number
EP0639743B1
EP0639743B1 EP94112654A EP94112654A EP0639743B1 EP 0639743 B1 EP0639743 B1 EP 0639743B1 EP 94112654 A EP94112654 A EP 94112654A EP 94112654 A EP94112654 A EP 94112654A EP 0639743 B1 EP0639743 B1 EP 0639743B1
Authority
EP
European Patent Office
Prior art keywords
sensor
support plate
cover layer
cooking
field according
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.)
Expired - Lifetime
Application number
EP94112654A
Other languages
German (de)
English (en)
Other versions
EP0639743A3 (fr
EP0639743A2 (fr
Inventor
Henry Dipl.-Ing. Karlheinz
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0639743A2 publication Critical patent/EP0639743A2/fr
Publication of EP0639743A3 publication Critical patent/EP0639743A3/fr
Application granted granted Critical
Publication of EP0639743B1 publication Critical patent/EP0639743B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • F24C15/105—Constructive details concerning the regulation of the temperature
    • 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
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means

Definitions

  • the invention relates to a hob with a glass or glass-ceramic material existing support plate, on the At least one sensor is applied to the top.
  • the output power is common each heating unit to control the glass ceramic To protect overheating. This is done on the bottom surface of the glass ceramic material with a corresponding temperature Sensor measured.
  • This arrangement of the sensor proves turned out to be inconvenient, however, if due to the sensor supplied temperature information the output power of the Heating unit should be regulated to a user-selected To achieve cookware temperature and upright too receive.
  • Other measurands, such as weight of a cookware or the detection of liquid the support plate are in the arrangement of the sensor on the lower Surface of the support plate cannot be measured.
  • DE-A-38 37 096 provides for a sensor direct measurement of the cookware temperature, i.e. an arrangement the sensor on the top of the glass ceramic hob, taken into consideration. From a realization of this Idea is discouraged because it increases costs the manufacturing process made more complicated and by that The sensor protrudes beyond the hob at least to some extent Extent the benefits in terms of appearance and the Possibility of cleaning the otherwise smooth hob surface would be rendered obsolete.
  • DE-C-32 29 380 describes a radiant heater for electric cookers described with glass ceramic cover plates, where in Area of the cooking zone on the underside of cover plate two Sensors, namely a temperature sensor and a metal plate to determine the extent of the curvature of curved cookware, are located.
  • Glass ceramic cooktops are described in DE-GM-88 01 334.0. where that is on top of glass ceramic plates printed decor extreme mechanical stress therefore has grown and is perfectly visible remains because it is arranged in recesses in the footprint is.
  • the disadvantage of the prior art is in that, in contrast to the decor, sensors have so far only been used the underside of glass ceramic plates are arranged and this means that measured variables relating to the cookware are only indirect can measure.
  • sensors By arranging conductive sensors on the Underside of the support plate is also an electrical hazard Flashover from heating coil to sensor enlarged, resulting in dangerous operating conditions of the household appliance can lead.
  • the object of the present invention is therefore to direct sensing of measured values on the top the glass-ceramic plate by means of a sensor technology while overcoming the disadvantages inherent in the sensors above to enable.
  • This object is achieved in that a cover layer covering at least one sensor.
  • the application of the sensor itself on the top differs not from attaching the sensor to the bottom, so that the costs and the manufacturing process are identical in this regard are.
  • the sensors prefferably have connecting lines assigned and this also covered.
  • the sensors are advantageously in a surface area applied within this cooking zone.
  • a temperature sensor Spatially assigned area outside the cooking zone, to measure their residual heat.
  • first opaque top layer material and the material of the decorative coating advantageously simplifies the manufacturing process.
  • the the same purpose is used in a further preferred exemplary embodiment the replacement of the decorative coating with a first top layer.
  • the sensors over a large area and not on the linear design a sensor oriented covered with the top layer. It is expedient to use the first cover layer a clear second top layer is used so the geometric arrangement of the sensors below the Top layer remains recognizable.
  • the connecting lines are of the sensors to the edge of the support plate, the is covered by a frame surrounding the support plate, and from there with control electronics located below the support plate conductively connected.
  • FIG. 1 which is not to scale, shows the cooktop with a Support plate 1 made of glass-ceramic material by a slightly raised frame 2 is bordered. Below the Support plate 1 are several, not shown, e.g. electric radiators arranged. These are on the top cooking zones 3a, 3b, 3c corresponding to support plate 1, 3d assigned.
  • the cooking zones 3a, 3b, 3c, 3d get geometrical assigned devices as a reference number Arabic numeral and a lowercase letter a, b, c, d. there the reference number stands for the type of device, for example 7 for sensor.
  • the assignment of the device to the respective cooking zone 3a, 3b, 3c, 3d takes place via the trailing letters a, b, c or d.
  • Cooking zones 3a, 3b, 3c, 3d are on the top or footprint of the support plate 1 decorative coatings 4b, 4d of ceramic material in the form of circular or oval lines, a first cover layer 5a made from the same Material consists of the decorative coatings 4b, 4d and one first cover layer 5c or a second transparent Cover layer 6b applied from ceramic material.
  • the Cover layers 5a, 5c, 6b or further first cover layers 5b, 5b ', 5d, which consist of the same material as that Decorative coatings 4b, 4d also cover the sensors 7a, 7b, 7b ', 7c, 7d and their connecting lines 8a, 8b, 8b', 8c, 8d.
  • the materials of the Decorative coating 4b, 4d and the first cover layer 5a, 5b, 5b ', 5d may also be different. It is also possible the transparent second cover layer 6b e.g. with a To provide matting and thus the cooking zone 3b mark and do without the decorative coating 4b.
  • Each of the cover layers 5a, 5b, 5b ', 5c, 5d, 6b can also be multilayered.
  • the sensors 7a, 7b, 7b ', 7c, 7d are in thick-film technology applied as well as their connecting lines 8a, 8b, 8b ', 8c, 8d. It is also a realization of the sensors and connection lines possible in thin film technology if this is advantageous.
  • the connecting lines can expediently consist of a precious metal.
  • connection lines 8, 8b, 8b ', 8c, 8d do not lead to connection points shown on the top of the support plate 1, which are covered by the frame 2. From there are them with control electronics located under the support plate 1 conductive via edge connector (not shown) connected. The connection of sensor and control electronics can also be implemented capacitively or inductively if necessary his. Also at least one through hole in the support plate 1 for carrying out electrical lines is conceivable.
  • the temperature sensor 7a is on the Top of the support plate 1 applied, the temperature dependence of the ceramic hob material overheated Locations on the edge of the cooking zone 3a detected.
  • the thermistor 7b In the cooking zone 3b are the thermistor 7b and the piezoelectric weight sensor 7b 'and in the cooking zone 3c is the temperature sensor 7c in known double spiral form (DE-PS 40 22 845 C2) realized. This extends over the entire Cooking zone 3c and therefore covers almost every overheated area the cooking zone, but also covers a large proportion of the total area the cooking zone 3c.
  • the sensors 7a, 7b, 7b ', and 7c are each an area within the cooking zones 3a, 3b and 3c assigned.
  • the thermistor 7d is an area outside the cooking zone 3d assigned to its residual heat capture.
  • the selection of the measurands is not on the above-mentioned, but more information, e.g. the presence of liquid on the Support plate 1 or the presence of a cookware a cooking zone, if this is appropriate.
  • the temperature sensor 7a is with the first cover layer 5a covered.
  • the cover layer 5a is only on the sensor tracks themselves and not in between (see Fig. 3A).
  • the temperature dependence of the sensor 7a is therefore independent of the properties of the ceramic Top layer 5a.
  • the cover layer 5a replaces the decorative coating the cooking zone 3a.
  • a recess 9b formed and with the second cover layer 6b replenished is transparent so that the position of the two sensors 7b formed on the bottom of the recess 9b and 7b 'remains visible, as can be seen in Fig. 1. So is the operator is able to use the point-measuring sensors 7b and 7b 'to use correctly. It can be beneficial the areal expansion of the recess 9b and second cover layer 6b on the areal expansions the sensors 7b, 7b 'and their connecting lines 8b, 8b' limit.
  • the spiral temperature sensor 7c At the bottom of a recess 9c in the cooking zone 3c is the spiral temperature sensor 7c applied.
  • the deepening 9c is filled with the first cover layer 5c, which the decorative coating of the cooking zone 3c replaced.
  • the recess 9c itself can also only have a double spiral shape according to the linear design of the Sensor 7c be formed in the support plate 1.
  • the connecting lines 8d of the temperature sensor 7d are on Bottom of a recess 9d applied.
  • the recess 9d is suitably shaped by laser beams, but can, for example can also be done by machining or in the support plate be etched. There can also be two wells for the two connecting lines 8d are formed.
  • the transition from the first cover layer 5d, which fills the depression 9d, is stepless to the surface of the glass ceramic plate 1 realized (see Fig. 3B).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Surface Treatment Of Glass (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)
  • Surgical Instruments (AREA)

Claims (9)

  1. Table de cuisson comprenant une plaque d'appui (1) composée de verre ou de matière vitrocéramique sur la partie supérieure de laquelle est disposé au moins un détecteur (7a, 7b, 7b', 7c, 7d), caractérisée en ce que à chaque fois une couche de recouvrement (5a, 5c, 5d, 6b) recouvre le - au moins un - détecteur (7a, 7b, 7b', 7c, 7d), et en ce que la couche de recouvrement (5a, 5b, 5b', 5d) se compose de la même matière qu'un revêtement de décor (4b, 4d) de la plaque d'appui (1).
  2. Table de cuisson selon la revendication 1, caractérisée en ce que des conduites de raccordement (8a, 8b, 8b', 8c, 8d), qui sont recouvertes à chaque fois par la couche de recouvrement (5a, 5b, 5b', 5c, 5d, 6b), sont associées à chacun du - au moins un - détecteur (7a, 7b, 7b', 7c, 7d),
  3. Table de cuisson selon la revendication 2, caractérisée en ce que le - au moins un - détecteur (7b, 7b', 7c, 7d) et les conduites de raccordement (8b, 8b', 8c, 8d) sont agencées dans au moins un creux (9b, 9c, 9d) enfoncé dans la partie supérieure de la plaque d'appui (1), et en ce que la couche de recouvrement (5b, 5b', 5c, 5d, 6b) appliquée à chaque fois sur le - au moins un - détecteur (7b, 7b', 7c, 7d) et les conduites de raccordement (8b, 8b', 8c, 8d) ne font pas saillie sur la surface de la plaque d'appui (1)
  4. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que le - au moins un - détecteur (7a, 7b, 7b', 7c) est associé à chaque fois à une zone de surface à l'intérieur d'une zone de cuisson (3a, 3b, 3c) en étant agencé géométriquement.
  5. Table de cuisson selon la revendication 1, 2 ou 3, caractérisée en ce que le - au moins un - détecteur (7d) est associé à chaque fois géométriquement à une zone de cuisson (3d), mais est agencé dans une zone de surface située en dehors de la zone de cuisson (3d).
  6. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que la couche de recouvrement (5c, 6b) recouvre vers l'extérieur des zones de surfaces situées sur la plaque d'appui (1) par des surfaces prédéfinies grâce à la configuration linéaire du - au moins un - détecteur (7b, 7b', 7c).
  7. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce qu'une pluralité de couches de recouvrement (5a, 5b, 5b', 5c, 5d, 6b) sont agencées les unes à côté des autres sur la plaque d'appui (1) et celles-ci sont facultativement une première couche de recouvrement non transparente (5a, 5b, 5b', 5c, 5d) ou une deuxième couche de recouvrement transparente (6b).
  8. Table de cuisson selon ta revendication 4 en relation avec la revendication 7, caractérisée en ce que la première couche de recouvrement (5a, 5c) qui recouvre le détecteur (7a, 7c) associé à la zone de surface à l'intérieur de la zone de cuisson (3a, 3c), remplace le revêtement de décor de cette zone de cuisson (3a, 3c).
  9. Table de cuisson selon l'une des revendications 2 à 8, caractérisée en ce que les conduites de raccordement (8a, 8b, 8b', 8c, 8d) sont guidées sur le bord de la plaque d'appui (1) jusque dans la zone d'un cadre (2) s'étendant autour de la plaque de cuisson (1) et, de là, sont reliées de façon conductrice à une commande électronique se trouvant sous la plaque d'appui (1).
EP94112654A 1993-08-18 1994-08-12 Table de cuisson Expired - Lifetime EP0639743B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9312369U 1993-08-18
DE9312369U DE9312369U1 (de) 1993-08-18 1993-08-18 Kochfeld

Publications (3)

Publication Number Publication Date
EP0639743A2 EP0639743A2 (fr) 1995-02-22
EP0639743A3 EP0639743A3 (fr) 1998-11-25
EP0639743B1 true EP0639743B1 (fr) 2001-05-30

Family

ID=6896932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112654A Expired - Lifetime EP0639743B1 (fr) 1993-08-18 1994-08-12 Table de cuisson

Country Status (2)

Country Link
EP (1) EP0639743B1 (fr)
DE (2) DE9312369U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2321261A1 (es) * 2007-03-13 2009-06-03 Bsh Electrodosmeticos España S.A. Campo de coccion con una zona de sensor de temperatura.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19926513A1 (de) 1999-06-10 2000-12-21 Bsh Bosch Siemens Hausgeraete Kochfeld mit Wägeeinheit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923884C2 (de) * 1979-06-13 1982-12-02 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Regeleinrichtung zur Ankopplung an Heizelemente für Glaskeramik-Kochflächen
DE3002623A1 (de) * 1980-01-25 1981-07-30 Neff - Werke Carl Neff GmbH, 7518 Bretten Einbau-kochfeld
DE3209260A1 (de) * 1982-03-13 1983-09-22 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kochfeld aus glaskermaischem material
DE3934157C2 (de) * 1989-10-12 1999-01-28 Bosch Siemens Hausgeraete Kochmulde
DE4022845A1 (de) * 1990-07-18 1992-01-23 Schott Glaswerke Temperatursensor oder -sensoranordnung aus glaskeramik und kontaktierenden filmwiderstaenden
GB2249386B (en) * 1990-10-22 1994-03-30 Moorwood Vulcan Ltd Cooker hobs
DE9108013U1 (de) * 1991-06-28 1991-09-05 Bosch-Siemens Hausgeräte GmbH, 8000 München Netzspannungsisolierung für Sensoren unter Glaskeramik-Kochflächen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2321261A1 (es) * 2007-03-13 2009-06-03 Bsh Electrodosmeticos España S.A. Campo de coccion con una zona de sensor de temperatura.

Also Published As

Publication number Publication date
DE59409763D1 (de) 2001-07-05
DE9312369U1 (de) 1994-12-15
EP0639743A3 (fr) 1998-11-25
EP0639743A2 (fr) 1995-02-22

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