EP3877700A1 - Heating system and cooking apparatus comprising the same - Google Patents

Heating system and cooking apparatus comprising the same

Info

Publication number
EP3877700A1
EP3877700A1 EP19829256.7A EP19829256A EP3877700A1 EP 3877700 A1 EP3877700 A1 EP 3877700A1 EP 19829256 A EP19829256 A EP 19829256A EP 3877700 A1 EP3877700 A1 EP 3877700A1
Authority
EP
European Patent Office
Prior art keywords
heating
heating system
series
cooking
thermal
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.)
Pending
Application number
EP19829256.7A
Other languages
German (de)
French (fr)
Inventor
Bruno CASO
Maxence BESSIEUX
Mickael Pinho
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.)
Rosinox SAS
Original Assignee
Rosinox SAS
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 Rosinox SAS filed Critical Rosinox SAS
Publication of EP3877700A1 publication Critical patent/EP3877700A1/en
Pending legal-status Critical Current

Links

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
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • F24C7/067—Arrangement or mounting of electric heating elements on ranges
    • 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
    • H05B3/72—Plates of sheet metal

Definitions

  • the invention relates to a hob-type heating system intended, in particular, for cooking appliances.
  • These cooking plates operate thanks to armored heating resistors. These are mounted just below the hob. These resistors have the drawback of having a long temperature rise time because of the envelope present around the resistive film, as well as of a small contact surface allowing heat exchanges with the cooking plate and of a high thermal inertia.
  • These heating resistors are composed of a resistive heating film of nickel chrome alloy centered in a tube (copper, stainless steel, incoloy or inconel) filled with an insulating material (magnesium oxide) ensuring thermal transfer and insulation. electric.
  • An object of the invention is to provide a heating system of the optimized hob type with low thermal inertia allowing a rapid rise in temperature while having optimum temperature distribution and regulation.
  • a heating system comprising a cooking plate having a lower surface, heating means positioned under the cooking plate opposite the lower surface, characterized in that that the heating means comprise a thermal diffuser bearing on the lower surface of the hob and extending opposite it in a complementary manner, and a heating element bearing on a lower face of the thermal diffuser and s' extending opposite a part of the underside of the thermal diffuser.
  • the heating system according to the invention has at least one of the following technical characteristics:
  • the cooking plate is a thin plate having a small thickness
  • the cooking plate is made of refractory material
  • the thermal diffuser is made of a thermally conductive material, in particular aluminum or copper;
  • the heating element comprises a flat resistive film
  • the heating element comprises a support plate on which the flat resistive film extends
  • the heating system further comprises means for holding in position the plate, the thermal diffuser, and the heating element;
  • the heating means comprise a series of heating elements distributed on the underside of the thermal diffuser;
  • the heating means also comprise a thermal sensor associated with the heating element.
  • a cooking appliance intended for the direct cooking of food comprising a heating system having at least one of the preceding technical characteristics.
  • FIG. 1 is a three-dimensional view of a heating system according to the invention.
  • FIG. 1 is a bottom view of the heating system of Figure 1;
  • FIG. 3 is a side view of the heating system of Figure 1;
  • FIG. 4 is an exploded three-dimensional view of the heating system of Figures 1 to 3;
  • FIG. 5 is a three-dimensional view of a heating element of the heating system according to the invention.
  • the heating system 1 according to the invention comprises a stack formed by a cooking plate 10, a thermal diffuser 20, one or more heating elements 30.
  • the thermal diffuser 20 and the heating element or elements 30 are part of the heating means of the heating system 1 according to the invention.
  • the heating system 1 according to the invention comprises means for holding in position 12.50 of the stack thus formed.
  • the cooking plate 10 is here a rectangular-shaped cooking plate.
  • the cooking plate 10 comprises an upper cooking surface 13 intended to directly receive food to be cooked, such as meat, fish or vegetables.
  • the cooking plate 10 has a lower surface 14.
  • the cooking plate 10 is a thin plate having a small thickness.
  • the hob 10 is made of a refractory material.
  • the hob is made of refractory stainless steel.
  • the cooking plate 10 Extending from the lower surface 14, the cooking plate 10 comprises a first series of studs 11 distributed over the lower surface 14.
  • This first series of studs 11 allows the mounting of the heating system 1 according to the invention on a cooking appliance (not shown).
  • the studs 11 are attached threaded rods welded to the lower surface 14 of the cooking plate 10.
  • the studs 11 are made of stainless steel.
  • the series of studs 11 comprises twenty studs 11. Other numbers and distributions of these studs are possible depending on the configuration of the heating system 1 according to the invention.
  • the cooking plate 10 comprises a second series of studs 12 forming a part of the means for holding in position 12.50 the stack formed by the cooking plate 10, the thermal diffuser 20 and or heating elements 30, the second series of studs 12 projects from the lower surface 14 of the cooking plate 10.
  • the studs of the second series of studs 12 are, for example, rods added threaded welded on the lower surface 14.
  • the studs of the second series of studs 12 are made of copper for example.
  • the series of studs 12 comprises forty-eight studs. Other numbers and distributions of these studs are possible depending on the configuration of the heating system 1 according to the invention, in particular according to the number of heating elements 30 installed.
  • the second series of studs 12 receives, once said stack formed, clamping means 50, which are here nuts coming to be screwed on the studs. These nuts 50 can be made of brass for example.
  • the thermal diffuser 20 is here a plate of rectangular shape.
  • the thermal diffuser has an upper face 23 and a lower face 24. It further comprises, here, a peripheral rim 25 which projects from the lower face 24.
  • the thermal diffuser 20 comprises a first series through holes 21 whose number and positioning correspond to the number and positions of studs 11 that the series of through holes 21 is intended to receive during an assembly of the heating system 1 according to the invention.
  • the thermal diffuser 20 comprises a second series of through holes 22 whose number and positioning correspond to the number and positions of studs of the second series of studs 12 that the series of through holes 22 is intended to receive during 'An assembly of the heating system 1 according to the invention.
  • the thermal diffuser 20 extends opposite the lower surface 14 of the cooking plate 10 and the upper face 23 comes to bear on the lower surface 14 of the cooking plate 10.
  • the thermal diffuser 20 has a shape complementary to it so as to cover a maximum surface of the latter. This makes it possible to obtain an optimal heat exchange surface between the heating means and the cooking plates 10.
  • the rim 25 protects the heating element or elements 30 which are positioned in abutment against the underside 24 of the thermal diffuser 20 and which we will now describe.
  • the heating element 30 comprises a support plate 34 on which extends a flat resistive film 33.
  • the planar shape of the flat resistive film 33 provides a large heat exchange surface .
  • the flat resistive film 33 is in the shape of a "U”.
  • the heating element 30 here comprises three flat resistive films 33 which are mounted in parallel with each other. It should be noted that the number and the shape of the flat resistive films 33 can be different depending on the configuration of the heating element 30 as well as the desired heating regulation.
  • the support plate 34 further comprises a series of through holes 32, here eight in number. These through holes 32 are configured so as to receive, during assembly of the heating system 1 according to the invention, all or part of the studs of the second series of studs 12. Thus, once assembled, the heating element 30 extends opposite the lower surface 24 of the diffuser thermal 20 and bears on said lower surface 24 of the thermal diffuser 20.
  • the heating system 1 comprises a series of six heating elements 30 distributed on the underside 24 of the thermal diffuser 20. Again, the number and position of the heating elements 30 are depending on the desired configuration of the heating system 1 according to the invention. The fact of having several heating elements 30 makes it possible to create simply and easily different cooking zones at the level of the upper cooking surface 13 of the cooking plate 10. The maximum number of these cooking zones is equal to the number of heating elements 30 installed. In fact, with such a structure, it is possible to power the heating elements present 30 differently and independently of each other.
  • thermal sensors 40 are provided: there is a thermal sensor 40 associated with each of the heating elements 30.
  • the thermal sensor 40 is for example a thermocouple which is brazed and insulated on one of the studs of the second series of studs 12 passing through the support plate 34 of the associated heating element 30.
  • Such a heating system 1 is intended to be mounted on a cooking appliance which further comprises a control and supply unit for the heating elements 30 connected, on the one hand, to the terminals d supply 31 of the heating elements 30 and, on the other hand, on the thermal sensors 40.
  • a heating system 1 makes it possible to obtain rapid temperature increases due to its low thermal inertia while having a regulation of the heating (and therefore cooking) temperature multi independent points or multi zones. Furthermore, such a heating system 1 according to the invention makes it possible, by virtue of its structure, to have temperature uniformity at the level of the upper cooking surface 13 of the cooking plate 10. Thus, the consumption of electrical energy is controlled due to the possibility of managing several cooking zones: for example to heat only part of the cooking plate without having to heat the whole of said plate. cooking. The efficiency of the system is thus improved. Of course, it is possible to make numerous modifications to the invention without going beyond the ambit of the latter.

Abstract

The invention relates to a heating system (1) comprising a cooking plate (10) having a lower surface (14), heating means (20,30,40) positioned under the cooking plate opposite the lower surface, the heating means comprising a thermal diffuser (20) resting on the lower surface of the cooking plate and extending opposite thereto in a complementary manner, and heating elements (30) resting on a lower surface (24) of the thermal diffuser and extending opposite a portion of the lower surface of the thermal diffuser.

Description

SYSTÈME DE CHAUFFE ET APPAREIL DE CUISSON LE COMPORTANT  HEATING SYSTEM AND COOKING APPARATUS COMPRISING SAME
DOMAINE TECHNIQUE DE L’INVENTION TECHNICAL FIELD OF THE INVENTION
[0001] L’invention concerne un système de chauffe de type plaque de cuisson destiné, notamment, à des appareils de cuisson.  The invention relates to a hob-type heating system intended, in particular, for cooking appliances.
ETAT DE LA TECHNIQUE ANTERIEURE STATE OF THE PRIOR ART
[0002] Actuellement, il existe des appareils de cuisson électriques professionnels permettant de cuire des aliments directement sur une plaque de cuisson généralement en inox ou chrome, sans passer par l’intermédiaire d’une poêle ou d’une casserole. Les aliments ainsi cuits sont de type viande, poisson ou légume.  Currently, there are professional electric cooking appliances for cooking food directly on a hob generally made of stainless steel or chrome, without going through a pan or saucepan. The food thus cooked is of the meat, fish or vegetable type.
[0003] Ces plaques de cuisson fonctionnent grâce à des résistances chauffantes blindées. Celles-ci sont montées juste au-dessous de la plaque de cuisson. Ces résistances ont l’inconvénient d’avoir un temps de montée en température long à cause de l’enveloppe présente autour du film résistif, ainsi que d’une faible surface de contact permettant les échanges thermiques avec la plaque de cuisson et d’une inertie thermique élevée. Ces résistances chauffantes sont composées d’un film résistif chauffant en alliage de nickel chrome centré dans un tube (en cuivre, acier inoxydable, incoloy ou inconel) rempli d’un matériau isolant (oxyde de magnésium) assurant le transfert thermique et l’isolation électrique. These cooking plates operate thanks to armored heating resistors. These are mounted just below the hob. These resistors have the drawback of having a long temperature rise time because of the envelope present around the resistive film, as well as of a small contact surface allowing heat exchanges with the cooking plate and of a high thermal inertia. These heating resistors are composed of a resistive heating film of nickel chrome alloy centered in a tube (copper, stainless steel, incoloy or inconel) filled with an insulating material (magnesium oxide) ensuring thermal transfer and insulation. electric.
[0004] Par ailleurs, la régulation et la répartition de température de ces plaques de cuisson ne sont pas optimisées. Furthermore, the regulation and the temperature distribution of these cooking plates are not optimized.
EXPOSE DE L’INVENTION STATEMENT OF THE INVENTION
[0005] Un but de l’invention est de fournir un système de chauffe de type plaque de cuisson optimisé à faible inertie thermique permettant une montée rapide en température tout en ayant une répartition et une régulation de température optimales. [0006]A cette fin, il est prévu, selon l’invention, un système de chauffe comprenant une plaque de cuisson comportant une surface inférieure, des moyens de chauffage positionnés sous la plaque de cuisson en regard de la surface inférieure, caractérisé en ce que les moyens de chauffage comprennent un diffuseur thermique en appui sur la surface inférieure de la plaque de cuisson et s’étendant en regard de celle-ci de manière complémentaire, et un élément chauffant en appui sur une face inférieure du diffuseur thermique et s’étendant en regard d’une partie de la face inférieure du diffuseur thermique. An object of the invention is to provide a heating system of the optimized hob type with low thermal inertia allowing a rapid rise in temperature while having optimum temperature distribution and regulation. To this end, there is provided, according to the invention, a heating system comprising a cooking plate having a lower surface, heating means positioned under the cooking plate opposite the lower surface, characterized in that that the heating means comprise a thermal diffuser bearing on the lower surface of the hob and extending opposite it in a complementary manner, and a heating element bearing on a lower face of the thermal diffuser and s' extending opposite a part of the underside of the thermal diffuser.
[0007] Avantageusement, mais facultativement, le système de chauffe selon l’invention présente au moins l’une des caractéristiques techniques suivantes : Advantageously, but optionally, the heating system according to the invention has at least one of the following technical characteristics:
- la plaque de cuisson est une plaque mince présentant une faible épaisseur ; - The cooking plate is a thin plate having a small thickness;
- la plaque de cuisson est en matériau réfractaire ;  - the cooking plate is made of refractory material;
- le diffuseur thermique est en un matériau conducteur thermiquement, notamment en aluminium ou en cuivre ;  - The thermal diffuser is made of a thermally conductive material, in particular aluminum or copper;
- l’élément de chauffe comporte un film résistif plan ;  - the heating element comprises a flat resistive film;
- l’élément chauffant comprend une plaque de support sur laquelle s’étend le film résistif plan ;  - the heating element comprises a support plate on which the flat resistive film extends;
- le système de chauffe comporte en outre des moyens de maintien en position de la plaque, du diffuseur thermique, et de l’élément chauffant ; - The heating system further comprises means for holding in position the plate, the thermal diffuser, and the heating element;
- les moyens de chauffage comprennent une série d’éléments chauffants répartie sur la face inférieure du diffuseur thermique ; et, - The heating means comprise a series of heating elements distributed on the underside of the thermal diffuser; and,
- les moyens de chauffage comportent en outre un capteur thermique associé à l’élément chauffant.  - The heating means also comprise a thermal sensor associated with the heating element.
[0008] Il est aussi prévu, selon l’invention, un appareil de cuisson destiné à la cuisson directe d’aliments comportant un système de chauffe présentant au moins l’une des caractéristiques techniques précédentes. BREVE DESCRIPTION DES FIGURES There is also provided, according to the invention, a cooking appliance intended for the direct cooking of food comprising a heating system having at least one of the preceding technical characteristics. BRIEF DESCRIPTION OF THE FIGURES
[0009] D’autres caractéristiques et avantages de l’invention ressortiront à la lecture de la description qui suit d’un mode de réalisation de l’invention. Aux dessins annexés :  Other features and advantages of the invention will emerge on reading the following description of an embodiment of the invention. In the accompanying drawings:
- la figure 1 est une vue tridimensionnelle d’un système de chauffe selon l’invention ; - Figure 1 is a three-dimensional view of a heating system according to the invention;
- la figue 2 est une vue de dessous du système de chauffe de la figure 1 ; - Fig 2 is a bottom view of the heating system of Figure 1;
- la figure 3 est une vue de côté du système de chauffe de la figure 1 ;- Figure 3 is a side view of the heating system of Figure 1;
- la figure 4 est une vue tridimensionnelle éclatée du système de chauffe des figures 1 à 3 ; - Figure 4 is an exploded three-dimensional view of the heating system of Figures 1 to 3;
- la figure 5 est une vue tridimensionnelle d’un élément chauffant du système de chauffe selon l’invention.  - Figure 5 is a three-dimensional view of a heating element of the heating system according to the invention.
[0010] Pour plus de clarté, les éléments identiques ou similaires sont repérés par des signes de référence identiques sur l’ensemble des figures. For the sake of clarity, identical or similar elements are identified by identical reference signs in all of the figures.
DESCRIPTION DETAILLEE D’UN MODE DE REALISATION DETAILED DESCRIPTION OF AN EMBODIMENT
[0011] En référence aux figures 1 à 4, nous allons décrire un système de chauffe Referring to Figures 1 to 4, we will describe a heating system
1 selon l’invention. 1 according to the invention.
[0012] Le système de chauffe 1 selon l’invention comporte un empilement formé d’une plaque de cuisson 10, d’un diffuseur thermique 20, d’un ou plusieurs éléments chauffants 30. Le diffuseur thermique 20 et le ou les éléments chauffants 30 font parties des moyens de chauffage du système de chauffe 1 selon l’invention. D’autre part, le système de chauffe 1 selon l’invention comporte des moyens de maintien en position 12,50 de l’empilement ainsi formé. The heating system 1 according to the invention comprises a stack formed by a cooking plate 10, a thermal diffuser 20, one or more heating elements 30. The thermal diffuser 20 and the heating element or elements 30 are part of the heating means of the heating system 1 according to the invention. On the other hand, the heating system 1 according to the invention comprises means for holding in position 12.50 of the stack thus formed.
[0013] La plaque de cuisson 10 est ici une plaque de cuisson de forme rectangulaire. La plaque de cuisson 10 comprend une surface supérieure 13 de cuisson destinée à recevoir directement des aliments à cuire comme de la viande, du poisson ou des légumes. La plaque de cuisson 10 comporte une surface inférieure 14. Dans une forme de réalisation, la plaque de cuisson 10 est une plaque mince présentant une faible épaisseur. La plaque de cuisson 10 est réalisée en un matériau réfractaire. Par exemple, la plaque de cuisson est en acier inoxydable réfractaire. The cooking plate 10 is here a rectangular-shaped cooking plate. The cooking plate 10 comprises an upper cooking surface 13 intended to directly receive food to be cooked, such as meat, fish or vegetables. The cooking plate 10 has a lower surface 14. In one embodiment, the cooking plate 10 is a thin plate having a small thickness. The hob 10 is made of a refractory material. For example, the hob is made of refractory stainless steel.
[0014] S’étendant en saillie depuis la surface inférieure 14, la plaque de cuisson 10 comporte une première série de goujons 11 répartie sur la surface inférieure 14. Cette première série de goujons 11 permet le montage du système de chauffe 1 selon l’invention sur un appareil de cuisson (non représenté). Par exemple, les goujons 11 sont des tiges filetées rapportées soudées sur la surface inférieure 14 de la plaque de cuisson 10. Les goujons 11 sont en acier inoxydable. Ici, sur les figures, la série de goujons 11 comporte vingt goujons 11. D’autres nombres et répartitions de ces goujons sont possibles selon la configuration du système de chauffe 1 selon l’invention. Extending from the lower surface 14, the cooking plate 10 comprises a first series of studs 11 distributed over the lower surface 14. This first series of studs 11 allows the mounting of the heating system 1 according to the invention on a cooking appliance (not shown). For example, the studs 11 are attached threaded rods welded to the lower surface 14 of the cooking plate 10. The studs 11 are made of stainless steel. Here, in the figures, the series of studs 11 comprises twenty studs 11. Other numbers and distributions of these studs are possible depending on the configuration of the heating system 1 according to the invention.
[0015] De manière similaire, la plaque de cuisson 10 comporte une deuxième série de goujons 12 formant une partie des moyens de maintien en position 12,50 de l’empilement formé de la plaque de cuisson 10, du diffuseur thermique 20 et de ou des éléments chauffants 30, la deuxième série de goujons 12 s’étend en saillie depuis la surface inférieure 14 de la plaque de cuisson 10. Comme pour la première série, les goujons de la deuxième série de goujons 12 sont, par exemple, des tiges filetées rapportées soudées sur la surface inférieure 14. Les goujons de la deuxième série de goujons 12 sont en cuivre par exemple. Ici, sur les figures, la série de goujons 12 comporte quarante-huit goujons. D’autres nombres et répartitions de ces goujons sont possibles selon la configuration du système de chauffe 1 selon l’invention, en particulier selon le nombre d’éléments chauffants 30 installés. Il est à noter que la deuxième série de goujons 12 reçoit, une fois ledit empilement formé, des moyens de serrage 50, qui sont ici des écrous venant se visser sur les goujons. Ces écrous 50 peuvent être en laiton par exemple. Similarly, the cooking plate 10 comprises a second series of studs 12 forming a part of the means for holding in position 12.50 the stack formed by the cooking plate 10, the thermal diffuser 20 and or heating elements 30, the second series of studs 12 projects from the lower surface 14 of the cooking plate 10. As for the first series, the studs of the second series of studs 12 are, for example, rods added threaded welded on the lower surface 14. The studs of the second series of studs 12 are made of copper for example. Here, in the figures, the series of studs 12 comprises forty-eight studs. Other numbers and distributions of these studs are possible depending on the configuration of the heating system 1 according to the invention, in particular according to the number of heating elements 30 installed. It should be noted that the second series of studs 12 receives, once said stack formed, clamping means 50, which are here nuts coming to be screwed on the studs. These nuts 50 can be made of brass for example.
[0016] Le diffuseur thermique 20 est ici une plaque de forme rectangulaire. Le diffuseur thermique comporte une face supérieure 23 et une face inférieure 24. Il comporte en outre, ici, un rebord 25 périphérique qui s’étend en saillie depuis la face inférieure 24. D’autre part, le diffuseur thermique 20 comporte une première série d’orifices traversants 21 dont le nombre et le positionnement correspondent aux nombre et positions de goujons 11 que la série d’orifices traversants 21 est destinée à recevoir lors d’un assemblage du système de chauffe 1 selon l’invention. En outre, le diffuseur thermique 20 comporte une deuxième série d’orifices traversants 22 dont le nombre et le positionnement correspondent aux nombre et positions de goujons de la deuxième série de goujons 12 que la série d’orifices traversants 22 est destinée à recevoir lors d’un assemblage du système de chauffe 1 selon l’invention. Ainsi, une fois assemblé, le diffuseur thermique 20 s’étend en regard de la surface inférieure 14 de la plaque de cuisson 10 et la face supérieure 23 vient en appui sur la surface inférieure 14 de la plaque de cuisson 10. De plus, le diffuseur thermique 20 présente une forme complémentaire de celle-ci de sorte à couvrir une surface maximale de cette dernière. Ceci permet d’obtenir une surface d’échange thermique optimal entre les moyens de chauffage et la plaques de cuisson 10. The thermal diffuser 20 is here a plate of rectangular shape. The thermal diffuser has an upper face 23 and a lower face 24. It further comprises, here, a peripheral rim 25 which projects from the lower face 24. On the other hand, the thermal diffuser 20 comprises a first series through holes 21 whose number and positioning correspond to the number and positions of studs 11 that the series of through holes 21 is intended to receive during an assembly of the heating system 1 according to the invention. In addition, the thermal diffuser 20 comprises a second series of through holes 22 whose number and positioning correspond to the number and positions of studs of the second series of studs 12 that the series of through holes 22 is intended to receive during 'An assembly of the heating system 1 according to the invention. Thus, once assembled, the thermal diffuser 20 extends opposite the lower surface 14 of the cooking plate 10 and the upper face 23 comes to bear on the lower surface 14 of the cooking plate 10. In addition, the thermal diffuser 20 has a shape complementary to it so as to cover a maximum surface of the latter. This makes it possible to obtain an optimal heat exchange surface between the heating means and the cooking plates 10.
[0017] Le rebord 25 permet de protéger le ou les éléments chauffants 30 qui sont positionnés en appui contre la face inférieure 24 du diffuseur thermique 20 et que nous allons maintenant décrire. The rim 25 protects the heating element or elements 30 which are positioned in abutment against the underside 24 of the thermal diffuser 20 and which we will now describe.
[0018] En référence à la figure 5, l’élément chauffant 30 comporte une plaque support 34 sur laquelle s’étend un film résistif plan 33. La forme plane du film résistif plan 33 permet d’avoir une surface d’échange thermique importante. A chacune des extrémités du film résistif plan 33, ce dernier comporte une borne de connexion électrique 31. Ici, le film résistif plan 33 est en forme de « U ». D’autre part, l’élément chauffant 30 comprend, ici trois films résistifs plan 33 qui sont montés en parallèle les uns par rapport aux autres. Il est à noter que le nombre et la forme des films résistifs plan 33 peuvent être différents en fonction de la configuration de l’élément chauffant 30 ainsi que de la régulation de chauffe recherchée. Referring to Figure 5, the heating element 30 comprises a support plate 34 on which extends a flat resistive film 33. The planar shape of the flat resistive film 33 provides a large heat exchange surface . At each end of the flat resistive film 33, the latter has an electrical connection terminal 31. Here, the flat resistive film 33 is in the shape of a "U". On the other hand, the heating element 30 here comprises three flat resistive films 33 which are mounted in parallel with each other. It should be noted that the number and the shape of the flat resistive films 33 can be different depending on the configuration of the heating element 30 as well as the desired heating regulation.
[0019] La plaque support 34 comporte en outre une série d’orifices traversants 32, ici au nombre de huit. Ces orifices traversants 32 sont configurés de sorte à recevoir, lors d’un assemblage du système de chauffe 1 selon l’invention, tout ou partie des goujons de la deuxième série de goujons 12. Ainsi, une fois assemblé, l’élément chauffant 30 s’étend en regard de la surface inférieure 24 du diffuseur thermique 20 et vient en appui sur ladite surface inférieure 24 du diffuseur thermique 20. The support plate 34 further comprises a series of through holes 32, here eight in number. These through holes 32 are configured so as to receive, during assembly of the heating system 1 according to the invention, all or part of the studs of the second series of studs 12. Thus, once assembled, the heating element 30 extends opposite the lower surface 24 of the diffuser thermal 20 and bears on said lower surface 24 of the thermal diffuser 20.
[0020] Comme ici illustré aux figures, le système de chauffe 1 selon l’invention comporte une série de six éléments chauffants 30 répartis sur la face inférieure 24 du diffuseur thermique 20. De nouveau, le nombre et la position des éléments chauffants 30 sont fonction de la configuration recherchée du système de chauffe 1 selon l’invention. Le fait d’avoir plusieurs éléments chauffants 30 permet de créer simplement et facilement des zones de cuisson différentes au niveau de la surface supérieure de cuisson 13 de la plaque de cuisson 10. Le nombre maximum de ces zones de cuisson est égal au nombre d’éléments chauffants 30 installés. En effet, avec une telle structure, il est possible d’alimenter différemment les éléments chauffants présents 30 et ce de manière indépendante les uns des autres. De plus, des capteurs thermiques 40 sont prévus : il y a un capteur thermique 40 associé à chacun des éléments chauffants 30. Cela permet de piloter la température de chacun des éléments chauffants 30 de manière indépendante et donc la température de cuisson de la zone de cuisson associée. Le capteur thermique 40 est par exemple un thermocouple qui est brasé et isolé sur l’un des goujons de la deuxième série de goujons 12 traversant la plaque de support 34 de l’élément chauffant 30 associé. As illustrated in the figures here, the heating system 1 according to the invention comprises a series of six heating elements 30 distributed on the underside 24 of the thermal diffuser 20. Again, the number and position of the heating elements 30 are depending on the desired configuration of the heating system 1 according to the invention. The fact of having several heating elements 30 makes it possible to create simply and easily different cooking zones at the level of the upper cooking surface 13 of the cooking plate 10. The maximum number of these cooking zones is equal to the number of heating elements 30 installed. In fact, with such a structure, it is possible to power the heating elements present 30 differently and independently of each other. In addition, thermal sensors 40 are provided: there is a thermal sensor 40 associated with each of the heating elements 30. This makes it possible to control the temperature of each of the heating elements 30 independently and therefore the cooking temperature of the zone of associated cooking. The thermal sensor 40 is for example a thermocouple which is brazed and insulated on one of the studs of the second series of studs 12 passing through the support plate 34 of the associated heating element 30.
[0021] Un tel système de chauffe 1 selon l’invention est destiné à être monté sur un appareil de cuisson qui comporte en outre une unité de pilotage et d’alimentation des éléments chauffants 30 connecté, d’une part, sur les bornes d’alimentation 31 des éléments chauffants 30 et, d’autre part, sur les capteurs thermiques 40. Such a heating system 1 according to the invention is intended to be mounted on a cooking appliance which further comprises a control and supply unit for the heating elements 30 connected, on the one hand, to the terminals d supply 31 of the heating elements 30 and, on the other hand, on the thermal sensors 40.
[0022] L’utilisation d’un système de chauffe 1 selon l’invention permet d’obtenir des montées en température rapide du fait de sa faible inertie thermique tout en ayant une régulation de la température de chauffe (et donc de cuisson) multi points ou multi zones indépendant. De plus, un tel système de chauffe 1 selon l’invention permet, du fait de sa structure, d’avoir une homogénéité de température au niveau de la surface supérieure de cuisson 13 de la plaque de cuisson 10. [0023]Ainsi, la consommation d’énergie électrique est maîtrisée du fait de la possibilité de gérer plusieurs zones de cuisson : par exemple de ne chauffer qu’une partie de la plaque de cuisson sans avoir à chauffer l’ensemble de ladite plaque de cuisson. Le rendement du système est ainsi amélioré. [0024] Bien entendu, il est possible d’apporter à l’invention de nombreuses modifications sans pour autant sortir du cadre de celle-ci. The use of a heating system 1 according to the invention makes it possible to obtain rapid temperature increases due to its low thermal inertia while having a regulation of the heating (and therefore cooking) temperature multi independent points or multi zones. Furthermore, such a heating system 1 according to the invention makes it possible, by virtue of its structure, to have temperature uniformity at the level of the upper cooking surface 13 of the cooking plate 10. Thus, the consumption of electrical energy is controlled due to the possibility of managing several cooking zones: for example to heat only part of the cooking plate without having to heat the whole of said plate. cooking. The efficiency of the system is thus improved. Of course, it is possible to make numerous modifications to the invention without going beyond the ambit of the latter.

Claims

REVENDICATIONS
1. Système de chauffe (1 ) comprenant une plaque de cuisson (10) comportant une surface inférieure (14), des moyens de chauffage (20,30,40) positionnés sous la plaque de cuisson en regard de la surface inférieure, les moyens de chauffage comprenant un diffuseur thermique (20) en appui sur la surface inférieure de la plaque de cuisson et s’étendant en regard de celle-ci de manière complémentaire, caractérisé en ce que les moyens de chauffage comprennent une série d’éléments chauffants (30) répartis et en appui sur une face inférieure (24) du diffuseur thermique et s’étendant en regard d’une partie de la face inférieure du diffuseur thermique. 1. Heating system (1) comprising a cooking plate (10) comprising a lower surface (14), heating means (20,30,40) positioned under the cooking plate facing the lower surface, the means heater comprising a thermal diffuser (20) bearing on the lower surface of the hob and extending opposite it in a complementary manner, characterized in that the heating means comprise a series of heating elements ( 30) distributed and supported on a lower face (24) of the thermal diffuser and extending opposite a part of the lower face of the thermal diffuser.
2. Système de chauffe selon la revendication 1 , caractérisé en ce que la plaque de cuisson est une plaque mince présentant une faible épaisseur. 2. Heating system according to claim 1, characterized in that the cooking plate is a thin plate having a small thickness.
3. Système de chauffe selon la revendication 1 ou 2, caractérisé en ce que la plaque de cuisson est en matériau réfractaire, notamment en acier inoxydable réfractaire. 3. Heating system according to claim 1 or 2, characterized in that the cooking plate is made of refractory material, in particular refractory stainless steel.
4. Système de chauffe selon l’une des revendications 1 à 3, caractérisé en ce que le diffuseur thermique est en un matériau conducteur thermiquement, notamment en aluminium ou en cuivre. 4. Heating system according to one of claims 1 to 3, characterized in that the thermal diffuser is made of a thermally conductive material, in particular aluminum or copper.
5. Système de chauffe selon l’une des revendications 1 à 4, caractérisé en ce que l’élément de chauffe comporte un film résistif plan (33). 5. Heating system according to one of claims 1 to 4, characterized in that the heating element comprises a flat resistive film (33).
6. Système de chauffe selon la revendication 5, caractérisé en ce que l’élément chauffant comprend une plaque de support (34) sur laquelle s’étend le film résistif plan. 6. Heating system according to claim 5, characterized in that the heating element comprises a support plate (34) on which the flat resistive film extends.
7. Système de chauffe selon l’une des revendications 1 à 6, caractérisé en ce qu’il comporte en outre des moyens de maintien (12,50) en position de la plaque, du diffuseur thermique, et de l’élément chauffant. 7. Heating system according to one of claims 1 to 6, characterized in that it further comprises holding means (12.50) in position of the plate, the thermal diffuser, and the heating element.
8. Système de chauffe selon l’une des revendications 1 à 7, caractérisé en ce que les moyens de chauffage comprennent en outre un capteur thermique (40) associé à la série d’éléments chauffants. 8. Heating system according to one of claims 1 to 7, characterized in that the heating means further comprise a thermal sensor (40) associated with the series of heating elements.
9. Système de chauffe selon la revendication 8, caractérisé en ce que les moyens de chauffage comportent une série de capteurs thermiques (40) associé à la série d’éléments chauffants, chaque élément chauffant de la série d’éléments chauffants comportant un capteur thermique de la série de capteurs thermiques. 9. Heating system according to claim 8, characterized in that the heating means comprise a series of thermal sensors (40) associated with the series of heating elements, each heating element of the series of heating elements comprising a thermal sensor from the thermal sensor series.
10. Appareil de cuisson destiné à la cuisson directe d’aliments caractérisé en ce qu’il comporte un système de chauffe selon l’une des revendications 1 à 9. 10. Cooking appliance intended for the direct cooking of food, characterized in that it comprises a heating system according to one of claims 1 to 9.
EP19829256.7A 2018-11-09 2019-10-30 Heating system and cooking apparatus comprising the same Pending EP3877700A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1860370A FR3088413B1 (en) 2018-11-09 2018-11-09 HEATING SYSTEM AND COOKING APPLIANCE INCLUDING IT
PCT/FR2019/052579 WO2020094949A1 (en) 2018-11-09 2019-10-30 Heating system and cooking apparatus comprising the same

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EP3877700A1 true EP3877700A1 (en) 2021-09-15

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Application Number Title Priority Date Filing Date
EP19829256.7A Pending EP3877700A1 (en) 2018-11-09 2019-10-30 Heating system and cooking apparatus comprising the same

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EP (1) EP3877700A1 (en)
FR (1) FR3088413B1 (en)
WO (1) WO2020094949A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622754A (en) * 1970-07-24 1971-11-23 Gen Electric Glass plate surface heating unit with even temperature distribution
GB8605948D0 (en) * 1986-03-11 1986-04-16 Thorn Emi Appliances Cooking hob
US5413032A (en) * 1994-08-18 1995-05-09 The Middleby Corporation Restaurant type griddle with modular construction and which is load sensitive
GB2351894B (en) * 1999-05-04 2003-10-15 Otter Controls Ltd Improvements relating to heating elements
DE102009029460A1 (en) * 2009-09-15 2011-03-24 BSH Bosch und Siemens Hausgeräte GmbH Cooking chamber device with thick film heating element

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FR3088413B1 (en) 2020-12-18
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