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WO1994024490A1 - Plaque de chaleur - Google Patents

Plaque de chaleur Download PDF

Info

Publication number
WO1994024490A1
WO1994024490A1 PCT/GB1994/000739 GB9400739W WO9424490A1 WO 1994024490 A1 WO1994024490 A1 WO 1994024490A1 GB 9400739 W GB9400739 W GB 9400739W WO 9424490 A1 WO9424490 A1 WO 9424490A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
hob
glass
temperature sensitive
ceramic
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.)
Ceased
Application number
PCT/GB1994/000739
Other languages
English (en)
Inventor
Craig Anthony Hill
Maurice Hugh Carter
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.)
Redring Electric Ltd
Original Assignee
Redring Electric 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
Priority to CA002153885A priority Critical patent/CA2153885C/fr
Application filed by Redring Electric Ltd filed Critical Redring Electric Ltd
Priority to DE69410791T priority patent/DE69410791T2/de
Priority to JP6522872A priority patent/JPH08509057A/ja
Priority to EP94912025A priority patent/EP0694149B1/fr
Priority to AU64342/94A priority patent/AU6434294A/en
Publication of WO1994024490A1 publication Critical patent/WO1994024490A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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

Definitions

  • the present invention relates to hobs of the type which employ radiant heating elements.
  • ceramic hobs using radiant heating elements, such as tungsten halogen lamps, or inductive heating units.
  • radiant heating elements such as tungsten halogen lamps, or inductive heating units.
  • ceramic hobs also give the advantage of being easy to clean and are aesthetically pleasing, normally comprising four or more heating units mounted under a single sheet of glass-ceramic.
  • a hob comprising: a substantially
  • planar member having at least one aperture therein defining a hotplate region; a substantially planar glass-ceramic insert located in the aperture and a radiant heating element below the glass-ceramic insert, the glass-ceramic insert being moulded.
  • the present invention retains the advantages provided by a conventional ceramic hob
  • the phrase "moulded glass-ceramic insert” includes inserts made by moulding glass which is then heat treated to change the structure of the glass to that of a glass-ceramic.
  • One such material would be lithium-alumino-silicate.
  • this lens is a Fresnel lens enabling the lowermost surface of the
  • the insert is moulded to support a temperature sensitive element, substantially the whole of the temperature sensitive region of the element preferably being held in thermal contact of the insert. This enables the heating element to then be controlled in dependence on the temperature glass-ceramic
  • temperature sensitive element is preferably formed by a region of the glass-ceramic
  • the glass-ceramic material of the insert is a poor electrical conductor, the resistance of which is temperature dependent.
  • the electrodes would normally be closely spaced because of the poor resistive nature of the glass-ceramic, but this ensures the resistive value is not significantly altered
  • the region of the insert forming the temperature sensitive region can have material
  • the electrodes, or conductive strip of the above embodiments are preferably deposited by screen printing, pad printing or by a spray deposition method.
  • control means is electrically connected to the temperature sensitive
  • seal between the insert and the member which seal is formed from a mixture of alumina/glass fibre and a silicone sealant.
  • a mixture prevents the ingress of water or dirt below the insert, and also provides a high resistance to abrasion when the surface is cleaned.
  • the member supports resilient mounting means which urge a canister in which the heating element is supported towards the insert, the canister comprising thermally insulating material which is arranged such that this is urged into contact with the insert.
  • the member comprises a
  • the glass-ceramic is thermo-chromic as this provides a visual indication that the glass-ceramic is hot even though the hob may be turned off.
  • thermo-chromic glass- ceramic material for use in ceramic hobs.
  • Figure 1 is a schematic view of part of a hob in accordance with the present invention
  • Figure 2 is a cross-section along the line I-I of Figure 1 ;
  • Figures 3 and 4 are alternative configurations of a hob in accordance with the present invention.
  • Figure 5 is a perspective view of a hob of which figures 1 and 2 or 3 of 4 depict a part.
  • the hob comprises a member 1 of vitreous enamelled
  • the glass-ceramic inse ⁇ comprises a lithium-alumino-silicate which has a working range in which it can be moulded of 1200-1800°C.
  • Insert 4 has a Fresnel lens 6 moulded onto its lower surface, seen in Figure 2, which controls the dispersion of light from tungsten halogen lamp 7, and on its upper surface spillage retention channel 10. Energisation of the lamp 7 is controlled in dependence on the electrical resistance of the lower surface of insert 4 which is determined by control circuitry (not shown) by measuring the resistive value of the glass between conductors 8a and 8b. These are platinum based electrodes formed by pad printing and
  • the conductors 8a and 8b are
  • canister 12 is lined with thermally insulating material 14, a wall portion 15 of which is
  • FIG. 3 shows an alternative arrangement of the hob of Figure 1. In this arrangement
  • the ceramic-glass insert 4 has three downwardly extending legs 16, only one of which
  • Figure 4 illustrates an arrangement when the ceramic insert can be inserted into the member 1 from the top, with the canister 12 already in position. A downwardly
  • Figure 5 illustrates a complete hob which Figures 1 and 2 or Figure 3 or Figure 4, depict
  • This hob comprises five hotplates, but it will be realized that any number
  • hotplates could be employed in a hob in accordance with the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Confectionery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Baking, Grill, Roasting (AREA)
  • Table Equipment (AREA)

Abstract

Une plaque de chaleur comprend un élément (1) pratiquement plat possédant des ouvertures formant des régions de plaque chauffante, une pièce d'insertion vitrocéramique positionnée dans chaque ouverture au-dessus d'un élément chauffant radiant (7). L'utilisation d'une pièce d'insertion en verre, moulée, correspondant à une région de la plaque chauffante offre plusieurs avantages sur les plaques de chaleur des techniques antérieures comportant traditionnellement une feuille vitrocéramique formée par un processus de verre plat qui s'étend sur une pluralité de régions de la plaque chauffante.
PCT/GB1994/000739 1993-01-20 1994-04-07 Plaque de chaleur Ceased WO1994024490A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002153885A CA2153885C (fr) 1993-01-20 1994-01-19 Magnetoscope pour la thvd numerique
DE69410791T DE69410791T2 (de) 1993-04-13 1994-04-07 Mulde und Verfahren
JP6522872A JPH08509057A (ja) 1993-04-13 1994-04-07 ホ ブ
EP94912025A EP0694149B1 (fr) 1993-04-13 1994-04-07 Plaque de chaleur et procédé
AU64342/94A AU6434294A (en) 1993-04-13 1994-04-07 A hob

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9307608A GB2277145B (en) 1993-04-13 1993-04-13 A hob
GB9307608.1 1993-04-13

Publications (1)

Publication Number Publication Date
WO1994024490A1 true WO1994024490A1 (fr) 1994-10-27

Family

ID=10733734

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1994/000739 Ceased WO1994024490A1 (fr) 1993-01-20 1994-04-07 Plaque de chaleur

Country Status (8)

Country Link
EP (1) EP0694149B1 (fr)
JP (1) JPH08509057A (fr)
AT (1) ATE166955T1 (fr)
AU (1) AU6434294A (fr)
DE (1) DE69410791T2 (fr)
ES (1) ES2117787T3 (fr)
GB (1) GB2277145B (fr)
WO (1) WO1994024490A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5746114A (en) * 1995-08-15 1998-05-05 Harris; David P. Intelligent cooking system with wireless control
WO2007133003A1 (fr) 2006-05-11 2007-11-22 Lg Electronics Inc. Table de cuisson, dispositif de support d'élément chauffant de la table de cuisson et ressort de support d'élément chauffant de la table de cuisson
KR20180093487A (ko) * 2017-02-13 2018-08-22 엘지이노텍 주식회사 카메라 모듈 및 자동차

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5994674A (en) * 1993-04-13 1999-11-30 Gda Applied Energy Limited Hob
GB2323922B (en) * 1997-04-02 2001-08-29 Redring Electric Ltd A heating unit for a hob
DE102004023847B4 (de) * 2004-05-13 2013-12-05 BSH Bosch und Siemens Hausgeräte GmbH Kochfläche mit einer Glaskeramikplatte

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2101895A5 (fr) * 1970-07-24 1972-03-31 Gen Electric
DE3440868A1 (de) * 1983-12-19 1985-06-27 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kochmulde
EP0269892A1 (fr) * 1986-11-14 1988-06-08 Eisfink Carl Fink GmbH & Co. Dispositif pour conserver la chaleur des aliments
EP0401651A1 (fr) * 1989-06-07 1990-12-12 Bosch-Siemens HausgerÀ¤te GmbH Table de cuisson pour des cuisinières électriques, pour des plaques de cuisson et similaires
EP0471171A2 (fr) * 1990-07-18 1992-02-19 Schott Glaswerke Dispositif pour la régulation et le limitation de la puissance d'une surface de chauffage en céramique ou un matériau similaire

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781523A (en) * 1972-03-27 1973-12-25 Gen Electric Thermochromic surface heating apparatus
US3885128A (en) * 1974-07-01 1975-05-20 Gen Electric Glass-ceramic plate heating unit cast-in heat spreader
GB2138935B (en) * 1983-04-22 1987-11-18 Redring Electric Ltd Electric hobs
GB8517401D0 (en) * 1985-07-10 1985-08-14 Redring Electric Ltd Electric hobs
GB8709051D0 (en) * 1987-04-15 1987-05-20 Emi Plc Thorn Thermochromic temperature sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2101895A5 (fr) * 1970-07-24 1972-03-31 Gen Electric
DE3440868A1 (de) * 1983-12-19 1985-06-27 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kochmulde
EP0269892A1 (fr) * 1986-11-14 1988-06-08 Eisfink Carl Fink GmbH & Co. Dispositif pour conserver la chaleur des aliments
EP0401651A1 (fr) * 1989-06-07 1990-12-12 Bosch-Siemens HausgerÀ¤te GmbH Table de cuisson pour des cuisinières électriques, pour des plaques de cuisson et similaires
EP0471171A2 (fr) * 1990-07-18 1992-02-19 Schott Glaswerke Dispositif pour la régulation et le limitation de la puissance d'une surface de chauffage en céramique ou un matériau similaire

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5746114A (en) * 1995-08-15 1998-05-05 Harris; David P. Intelligent cooking system with wireless control
WO2007133003A1 (fr) 2006-05-11 2007-11-22 Lg Electronics Inc. Table de cuisson, dispositif de support d'élément chauffant de la table de cuisson et ressort de support d'élément chauffant de la table de cuisson
EP2016338A4 (fr) * 2006-05-11 2015-04-08 Lg Electronics Inc Table de cuisson, dispositif de support d'élément chauffant de la table de cuisson et ressort de support d'élément chauffant de la table de cuisson
KR20180093487A (ko) * 2017-02-13 2018-08-22 엘지이노텍 주식회사 카메라 모듈 및 자동차
KR102705245B1 (ko) * 2017-02-13 2024-09-11 엘지이노텍 주식회사 카메라 모듈 및 자동차

Also Published As

Publication number Publication date
DE69410791T2 (de) 1998-10-01
JPH08509057A (ja) 1996-09-24
EP0694149A1 (fr) 1996-01-31
GB2277145B (en) 1997-08-27
AU6434294A (en) 1994-11-08
DE69410791D1 (de) 1998-07-09
GB9307608D0 (en) 1993-06-02
GB2277145A (en) 1994-10-19
ATE166955T1 (de) 1998-06-15
EP0694149B1 (fr) 1998-06-03
ES2117787T3 (es) 1998-08-16

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