WO1985005528A1 - Dispositif de chauffage - Google Patents

Dispositif de chauffage Download PDF

Info

Publication number
WO1985005528A1
WO1985005528A1 PCT/SE1985/000197 SE8500197W WO8505528A1 WO 1985005528 A1 WO1985005528 A1 WO 1985005528A1 SE 8500197 W SE8500197 W SE 8500197W WO 8505528 A1 WO8505528 A1 WO 8505528A1
Authority
WO
WIPO (PCT)
Prior art keywords
pot
foil
heating device
elements
cooking
Prior art date
Application number
PCT/SE1985/000197
Other languages
English (en)
Inventor
Ha^okan JANSSON
Jan Hermansson
Original Assignee
Kopal Försäljnings Ab
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 Kopal Försäljnings Ab filed Critical Kopal Försäljnings Ab
Publication of WO1985005528A1 publication Critical patent/WO1985005528A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/004—Cooking-vessels with integral electrical heating means
    • 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
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/58—Heating hoses; Heating collars

Definitions

  • the present invention relates to a heating device preparing food, particularly in large kitchens and the li
  • the vessels used to prepare food in large kitchens are themselves large in size.
  • the cooking pots norm ly used have a volumetric capacity of several hundred lit Steam is the conventional mediumused to heat such large cooki pots.
  • the pot has two walls which present therebetween e_sp into which steam is introduced, so as to be brought into contact with substantially the whole of the inner wall de fining the chamber in which food is prepared.
  • Steam-heate cooking pots are encumbered with a number of disadvantage however.
  • the lower temperature at the bottom of the cooking pot creates in the liquid contained therein a flow pattern in which there is formed an upwardly moving stream immedia tely adjacent the vertical inner wall of the pot and a dow wardly moving stream immediately adjacent the upwardly moving stream radially inwards thereof.
  • the present invention fully solves the aforesaid problems and provides a heating device to which a high lev of power can be applied and with which the power input can be regulated unlimitedly throughout the whole power range.
  • the present invention relates to a heating device for preparing food, primarily cooking pots and grilling plates or tables in large kitchens and the like, said device comprising electrical resistance elements adap to supply thermal energy to a surface to be heated, such a the outer surface of a cooking pot and the underside of a grill surface, and being characterized in that the resis ⁇ tance elements comprise resistance elements in the form of electrically conductive foil which is vulcanized firmly to the aforesaid surface with the aid of a thin layer of vulc nizable rubber material.
  • Figure 1 schematically illustrates a cooking pot
  • Figure 2 is a detail view of part of a heating element
  • Figure 3 is a sectional view in larger scale taken o the line A-A in Figure 2;
  • Figure 4 is a block schematic illustrating electroni control apparatus
  • FIG 5 is a side view of the cooking pot illustra ⁇ ted in Figure 1;
  • Figure 6 schematically illustrates a grill plate or table.
  • the present invention is well suited for application with cooking pots of the aforedescribed kind.
  • the invention can also be equally as well applied to grill plate or tables and other food-preparing devices where a high maximum power input is desired.
  • Figure 1 illustrates a heating device in the form of a schematically illustrated cooking pot 1
  • Figure 6 illustrates a further example of a heating device in the form of a grill surface or table 2, seen from above.
  • the heating device comprises electrical resistance elements 2-5; 3-11 adapted to supply thermal energy to the surface to be heated.
  • the cooking pot 1 is a single-wall vessel and the elements 2-5 lie against its peripheral sur- face 12 and against the bottom 13 respectively.
  • the elements 6-11 are placed on the undersurface of the plates 14 of the table.
  • the resistance elements 2-5; 6-11 comprise resistance filaments 15 in the form of an electrically conductive foil, which is vulca ⁇ nized firmly to the aforesaid surface with the aid of a thin layer 16 of a vulcanizable rubber material.
  • the foil used is preferably a so-called Kanthal- foil produced by Bulten-Kanthal AB in Sweden. It will be understood that other makes of foil can also be used, however.
  • the electrically conductive foil 17 comprises a slender electrical conductor 15 which extends backwards and forwards in a pattern such that the width of the foil excee the width of the conductor 15, cf Figure 2.
  • Figure 3 illustrates in larger scale a section of a foil 15 taken on a line corresponding to the line A-A in Figure 2.
  • the foil 17 is also provided with a vulcanized rubber layer 18 on the sid remote from said surface.
  • the thin layer 16 of rubber material located betwee the foil 17 and said surface 12,13 has a thickness beneath 1 mm, preferably beneath 0.5 mm.
  • the lower thickness limit is set with a view to the fact that the layer 16 shall for an electric insulation between the conductor 15 and the wa 12,13.
  • the walls of the cooking pot are made of stainless steel.
  • the layer 16 comprises vulcanizable silicone rubber.
  • thermal conductivity of vulcanized silicone rubber is sufficient to achieve power inputs of up to 10 W/c when transferring heat from the conductor 15 to the aforesaid wall.
  • Full scale experiments have shown that when the wall 12,13 is cooled, for example by a liquid being heated the temperature of the outer sur ⁇ face 19 of the foil is only slightly increased when the
  • the foil 17 is preferably applied to said surface i strip-like elements, as illustrated in Figure 1.
  • the width of the strip-like elements is suitably from 5 to 20 cm.
  • the foil is preferably mounted on the peripheral surface 12 of the pot in strip ⁇ like elements 23,24,25 extending in superimposed, relation ⁇ ship around the pot from the bottom 13 thereof.
  • An element 35 is also mounted on the bottom 13 of the pot. The element 35 covers substantially the whole of the pot bottom. Electrical conductors 20,21,22,26 connect respective elements to a current source.
  • the heating device includes control means 27 arranged to delive separately the desired power to each of the strip-like ele- ments 23,24,25 or groups of elements, and the element 35 located on the pot bottom.
  • the pot When preparing soop, for example, the pot is filled to a level L2, cf. Figure 5, and all the elements, includi the element on the pot bottom, are energized.
  • Temperature sensing device such as thermistors 28,29,30,31, are suitably placed adjacent each element 23,24,25,35 for sensing prevailing temperatures.
  • the thermistors 28-31 are connected to the afore ⁇ said control means 27.
  • the control means 27 may be provide with control devices of a more or less sophisticated character.
  • a microprocessor 32 containing a program by means of which it can calculate a suitable power and suitable set- point values for the temperatures of the various elements 24,25,35 in dependence on the desired mean temperature of the liquid, the volume of liquid in the pot etc..
  • the thermistor will then serve as real-value sensors.
  • the microprocessor 32 includes a keyboard 33, on which the desired temperature, volume cooking time, etc. can be set, and a display 34 showing the information in ⁇ serted into the microprocessor.
  • the foil 17 is vulcanized to the underside of the plates 14, in different regions 6-11. This enables an extremely high lev of power to be applied to one or more regions to achieve desired heating of theplates, and the power supplied to various parts of the plate can be regulated individually in use, in a manner corresponding to that described with reference to a cooking pot.
  • the maximum power input is suitably about 20-30 kW with respect to the bottom element 35 of th pot and about 10-15 kW in respect of each element 23,24,25

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Cookers (AREA)

Abstract

Un dispositif de chauffage pour cuisiner, destiné essentiellement à des casseroles et des grils dans de grandes cuisines et autres comprend des résistances électriques adaptées pour fournir une énergie thermique à une surface à chauffer telle que la surface extérieure d'une casserole de cuisine et le dessous d'une table ou surface d'un gril. Selon l'invention les résistances (2-5) comprennent des filaments de résistance sous la forme d'une feuille électriquement conductrice qui est vulcanisée fermement sur la surface sus-mentionnée (12; 13) à l'aide d'une fine couche d'un matériau de caoutchouc vulcanisable. Selon un mode de réalisation, lorsque le dispositif de chauffage est une casserole de cuisine (1), la feuille est appliquée sur la surface périphérique (12) de la casserole (1) sous la forme d'éléments en forme de bande (23, 24, 25) qui s'étendent autour de la casserole en relation de superposition depuis son fond (13). Un élément (35) est également prévu sur le fond (13) de la casserole et recouvre sensiblement la totalité du fond de la casserole.
PCT/SE1985/000197 1984-05-10 1985-05-06 Dispositif de chauffage WO1985005528A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8402536A SE8402536L (sv) 1984-05-10 1984-05-10 Uppvermningsanordning
SE8402536-0 1984-05-10

Publications (1)

Publication Number Publication Date
WO1985005528A1 true WO1985005528A1 (fr) 1985-12-05

Family

ID=20355831

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1985/000197 WO1985005528A1 (fr) 1984-05-10 1985-05-06 Dispositif de chauffage

Country Status (3)

Country Link
EP (1) EP0179894A1 (fr)
SE (1) SE8402536L (fr)
WO (1) WO1985005528A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293026A2 (fr) * 1987-05-08 1988-11-30 BRAVO S.p.A. Appareil de chauffage, du type récipient, pour produits alimentaires fluides ou pâteux
EP0344446A2 (fr) * 1988-04-29 1989-12-06 Lancet S.A. Cuiseur ménager
EP0345833A1 (fr) * 1988-03-18 1989-12-13 BRAVO S.p.A. Manteau chauffant électrique pour réservoirs
US5070222A (en) * 1989-05-23 1991-12-03 Lancet S.A. Heating system employing an induction producing element and a high permeability foil
EP0626148A1 (fr) * 1993-05-27 1994-11-30 Thermoplan Ag Récipient de lait chauffant
US5374807A (en) * 1990-10-15 1994-12-20 Yahav; Shimon Domestic cooking apparatus
WO1997039667A1 (fr) * 1996-04-19 1997-10-30 Thermion Systems International Procede de chauffage de la surface d'un recipient pour aliments
DE10120136A1 (de) * 2001-04-25 2002-11-14 Frima Sa Garverfahren und Gargerät mit automatischer Garguterkennung
EP1369067A2 (fr) 2002-06-06 2003-12-10 Frima SA Elément de chauffage modulaire et appareil de cuisson pourvu de tels éléments
EP1489363A1 (fr) * 2003-06-18 2004-12-22 Frima Sa Méthode de calibrage d'appareil de cuisson et appareil de cuisson

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE563568C (de) * 1932-11-07 Ingbuero Hoechtl & Sauer G M B Elektrisches Koch- und Heizgeraet mit aus emailliertem Eisenblech hergestelltem Mantel- und Einsatzgefaess
DE866220C (de) * 1950-07-12 1953-02-09 Lieselotte Brunner Mit elektrischer Bodenheizung versehener Hochleistungs-Roesttopf
US3108170A (en) * 1958-02-17 1963-10-22 Maxwell K Murphy Heating element
US3842241A (en) * 1973-02-09 1974-10-15 Biozonics Corp Electrically heated aquarium tank
US3869596A (en) * 1973-09-28 1975-03-04 Safeway Products Inc Cookware heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE563568C (de) * 1932-11-07 Ingbuero Hoechtl & Sauer G M B Elektrisches Koch- und Heizgeraet mit aus emailliertem Eisenblech hergestelltem Mantel- und Einsatzgefaess
DE866220C (de) * 1950-07-12 1953-02-09 Lieselotte Brunner Mit elektrischer Bodenheizung versehener Hochleistungs-Roesttopf
US3108170A (en) * 1958-02-17 1963-10-22 Maxwell K Murphy Heating element
US3842241A (en) * 1973-02-09 1974-10-15 Biozonics Corp Electrically heated aquarium tank
US3869596A (en) * 1973-09-28 1975-03-04 Safeway Products Inc Cookware heater

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293026A3 (en) * 1987-05-08 1989-08-16 Bravo S.P.A. Tank-type heating apparatus for fluid or doughy food products
EP0293026A2 (fr) * 1987-05-08 1988-11-30 BRAVO S.p.A. Appareil de chauffage, du type récipient, pour produits alimentaires fluides ou pâteux
EP0345833A1 (fr) * 1988-03-18 1989-12-13 BRAVO S.p.A. Manteau chauffant électrique pour réservoirs
EP0344446A2 (fr) * 1988-04-29 1989-12-06 Lancet S.A. Cuiseur ménager
EP0344446A3 (en) * 1988-04-29 1990-02-07 Lancet S.A. Domestic food cooking apparatus
US5070222A (en) * 1989-05-23 1991-12-03 Lancet S.A. Heating system employing an induction producing element and a high permeability foil
US5508495A (en) * 1990-10-15 1996-04-16 Yahav; Shimon Domestic cooking apparatus
US5374807A (en) * 1990-10-15 1994-12-20 Yahav; Shimon Domestic cooking apparatus
EP0626148A1 (fr) * 1993-05-27 1994-11-30 Thermoplan Ag Récipient de lait chauffant
WO1997039667A1 (fr) * 1996-04-19 1997-10-30 Thermion Systems International Procede de chauffage de la surface d'un recipient pour aliments
US5981911A (en) * 1996-04-19 1999-11-09 Thermicon Systems International Method for heating the surface of a food receptacle
DE10120136A1 (de) * 2001-04-25 2002-11-14 Frima Sa Garverfahren und Gargerät mit automatischer Garguterkennung
EP1369067A2 (fr) 2002-06-06 2003-12-10 Frima SA Elément de chauffage modulaire et appareil de cuisson pourvu de tels éléments
DE10225063B4 (de) * 2002-06-06 2006-03-09 Frima S.A. Gargerät mit modularen Heizelementen
EP1489363A1 (fr) * 2003-06-18 2004-12-22 Frima Sa Méthode de calibrage d'appareil de cuisson et appareil de cuisson

Also Published As

Publication number Publication date
SE8402536D0 (sv) 1984-05-10
EP0179894A1 (fr) 1986-05-07
SE8402536L (sv) 1985-11-11

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