EP2706893A1 - Heating container for heating food and transportable device including such a heating container - Google Patents

Heating container for heating food and transportable device including such a heating container

Info

Publication number
EP2706893A1
EP2706893A1 EP12728661.5A EP12728661A EP2706893A1 EP 2706893 A1 EP2706893 A1 EP 2706893A1 EP 12728661 A EP12728661 A EP 12728661A EP 2706893 A1 EP2706893 A1 EP 2706893A1
Authority
EP
European Patent Office
Prior art keywords
heating vessel
heating
protective shell
screen
resistive track
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Withdrawn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
EP12728661.5A
Other languages
German (de)
French (fr)
Inventor
Laurent Guegan
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.)
SEB SA
Original Assignee
SEB SA
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 SEB SA filed Critical SEB SA
Publication of EP2706893A1 publication Critical patent/EP2706893A1/en
Withdrawn legal-status Critical Current

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
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/24—Warming devices
    • A47J36/2483—Warming devices with electrical heating means
    • 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
    • A47J45/00—Devices for fastening or gripping kitchen utensils or crockery
    • A47J45/06—Handles for hollow-ware articles
    • A47J45/062—Bowl handles
    • 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
    • A47J45/00—Devices for fastening or gripping kitchen utensils or crockery
    • A47J45/06—Handles for hollow-ware articles
    • A47J45/066—Collar handles
    • 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

Definitions

  • the present invention relates generally to the field of heated transportable apparatus for heating food.
  • the invention relates to a heating vessel for reheating food and a transportable apparatus comprising the heating vessel, a removable lid adapted to seal the heating vessel, and a protective shell to protect the heating vessel.
  • the heating vessel comprises a bottom, and a side wall rising from the bottom.
  • the bottom has an inner surface for receiving food and an outer surface comprising at least one resistive track screen printed.
  • the screen printed resistive track comprises two ends which are each connected to two electrical connection pads for its power supply.
  • Such a portable or portable heating device can heat food contained in the heating vessel in various places such as the workplace, camping or car.
  • the prior art document EP 1 824 366 discloses a portable heating apparatus comprising a stainless steel heating vessel having an inner surface for receiving food, which is covered by a layer of food material such as enamel, and a outer surface comprising a silkscreened resistive track for heating the heating vessel.
  • the method of manufacturing such a heating vessel of the prior art comprises a drawing step to form a stainless steel container, a step of depositing an enamel on the inner surface of the container, and at least one step of deposit of a resistive track silkscreened on the outer surface of the heating vessel.
  • the silkscreened track is conventionally composed of several successive layers, resulting in the following deposition steps:
  • a dielectric enamel layer is applied in one or two times by spraying or in three or five layers by screen printing to allow attachment and electrical insulation of the screen-printed resistive track;
  • these layers are baked at about 850 ° C;
  • a heating track composed of resistive enamel is applied by screen printing to the dielectric enamel layer;
  • silver contact pads are deposited by screen printing at the ends of the screen-printed resistive track forming the ends of electrical connections.
  • the silver contact pads may be fired together with the resistive track in an oven at 700 ° C, provided that prior drying of the bottom has been carried out.
  • a protective layer covers the entire screened resistive track with the exception of the portions of the connection ends. This protective layer is then fired at 650 ° C.
  • the object of the present invention is therefore to provide a heating container and a transportable culinary apparatus for heating food with reduced dimensions, which is less expensive to manufacture and has a reduced environmental impact.
  • the invention relates to a heating container for heating food comprising a bottom, and a side wall rising from the bottom, said bottom having an inner surface for receiving food and an outer surface on which is arranged at least one resistive track silkscreened, said screenprinted resistive track having two ends each connected to an electrical connection pad for its power supply.
  • the heating vessel is entirely made of glass. Only the screen-printed track and the connection pads are not made of glass.
  • the heating vessel is formed in one piece, except for the screen printed track and the connection pads.
  • the invention also relates to a transportable apparatus comprising a heating vessel such as as defined above, a removable cover adapted to seal the heating vessel, and a protective shell for supporting and protecting the heating vessel, thereby forming a double wall.
  • a seal may be disposed between the protective shell and the upper peripheral rim of the heating vessel.
  • transportable means that the apparatus can be moved and used to transport food to be heated between distant places such as between the home where the user has prepared food and the workplace where he wishes to consume such food, this device that can be carried manually and effortlessly by the user.
  • a device To be portable, such a device must weigh empty, that is to say without food, less than 5 kilograms and must not exceed a volume of parallelepiped rectangle dimensions whose dimensions are less than 1 meter.
  • the invention therefore makes it possible to provide a transportable apparatus for reheating food, of reduced size and requiring fewer manufacturing steps, and especially fewer annealing steps.
  • the invention makes it possible to manufacture a heating vessel requiring only one cooking step while three to five cooking stages are necessary when using a stainless steel heating vessel of the prior art.
  • the glass used is preferably a food glass of the borosilicate type which can be put in direct contact with food, and which does not does not require additional manufacturing steps such as processing steps or deposition of layers of food materials on the inner face of the container.
  • the use of the glass does not involve either a step of depositing a thin electrically insulating layer on the outer surface of the container, unlike the manufacturing processes of the prior art using a stainless steel container.
  • the glass being thermally insensitive, it is possible to provide several compartments in the container including a heating compartment and a non-heating compartment. It is also possible to provide two separate heating compartments, each compartment can be heated to a different temperature.
  • the use of glass also improves the visual impact.
  • the user can view the resistive track or serigraphs.
  • Figure 1 shows an exploded view of a transportable apparatus for heating food according to one embodiment of the invention
  • FIG. 2 represents a perspective view of this transportable device ready for use
  • FIG. 3 is a perspective view showing the top of the heating vessel of this transportable apparatus
  • FIG. 4 represents a perspective view showing the underside of the heating vessel of this transportable apparatus
  • FIG. 5 shows a perspective view of a heating vessel according to another embodiment of the invention.
  • FIGS. 6 and 7 show temperature and power curves as a function of heating time
  • FIG. 6 corresponds to a heating vessel comprising 450 ml of water
  • FIG. 7 corresponds to an empty heating vessel (heater). dried up) .
  • the invention relates to a heating vessel 2 for reheating food and a transportable apparatus 1 comprising such a heating vessel 2 for transporting, storing, reheating previously prepared food, serving it and consuming it at the same time. help from one and the same container.
  • the transportable apparatus 1 for reheating food comprises a heating container 2 and a removable lid 16 'adapted to seal the heating container 2.
  • This heating container 2 comprises a bottom 3, and a side wall 6 rising from the bottom 3.
  • the bottom 3 has an inner surface 4 for receiving food and an outer surface 5 comprising at least one track Resistive Screen-printed 7.
  • the screen-printed resistive track 7 comprises two ends which are each connected to two electrical connection pads 8a, 8b for its power supply.
  • the screen-printed resistive track 7 and the electrical connection pads 8a, 8b are fixed on the outer surface 5 of the base 3.
  • the heating vessel 2 is entirely made of glass. Only the screen-printed track and the connection pads are not made of glass.
  • the glass heating vessel 2 is formed in one piece, except for the screen printed track and the connection pads.
  • the heating vessel 2 is manufactured during a molding step.
  • the glass constituting the heating container 2 is a food glass which may be a borosilicate or fluosilicate or glass ceramic type toughened glass.
  • the glass is of the borosilicate type because it is a food glass that can be easily molded and is resistant to the temperatures applied to heat the food.
  • the thermal conductivity of the borosilicate is 1.2 W / m / K.
  • the glass constituting the heating vessel 2 is at least locally frosted, colored or opaque, in order to mask the screen-printed heating track 7.
  • the bottom 3 of the heating vessel 2 may be entirely frosted.
  • the heating vessel 2 is dish-shaped and preferably has a circular shape.
  • the container 2 is wider than deep. It has a thickness of at least 1 mm and preferably between 1 mm and 10 mm.
  • the bottom 3 of the heating vessel 2 is substantially flat and is integral with a circular side wall 6.
  • the side wall 6 of the container 2 flares away from the bottom 3 of the container 2 and towards the upper edge of the container, thereby forming a transportable heating plate.
  • Such a container may be made by known methods for making glass containers.
  • the heating vessel 2 comprises an upper peripheral rim 12 extending from the side wall 6 of the heating vessel 2, at its upper part, and towards the outside of the heating vessel 2.
  • the upper peripheral rim 12 has a lower surface 13 'and an upper surface 13 adapted to support the removable cover 16'.
  • the upper peripheral flange 12 is parallel to a plane (X, Y), which is itself parallel to the bottom 3.
  • the upper peripheral flange 12 has a width of at least 2 mm and preferably between 2 mm and 10 mm .
  • the removable cover 16 ' is adapted to seal the container 2, and has a compressible seal thereon over the entire contact area between the lid and the upper surface 13 of the upper peripheral flange 12 of the heating container 2.
  • This compressible seal is preferably nitrile rubber (NBR) or silicone and may be a seal pressure cooker type.
  • the lid may be polypropylene.
  • This heating vessel 2 can thus be hermetically sealed at least during the transport phase of the heating plate to avoid spilling the food, to keep it warm if it has been preheated or to avoid degrading it.
  • the electrical connection pads 8a, 8b which are positioned at the two ends of the screen-printed resistive track 7 and the latter are in contact with the outer surface 5 of the bottom 3 of the heating vessel 2. Thanks to this arrangement, the heat produced by the resistive track serigraphed 7 is transmitted by conduction directly to the food contained in the heating vessel 2 by passing through the thickness of the bottom 3 of the heating vessel 2 glass.
  • the screen-printed resistive track 7 is a screen printed conductive paste in the form of an elongate track.
  • the contact surface between the screen printed resistive track 7 and the heating vessel 2 is important. It improves the performance of the device and the homogeneity of heating.
  • This contact surface represents at least 40% of the useful area which is also called the heating surface of the bottom 3 of the heating vessel 2.
  • the screen-printed resistive track 7 covers at least 40% of the outer surface 5 from the bottom 3.
  • the screen-printed resistive track 7 is covered by the screen-printed resistive track 7. This characteristic makes it possible to have a relatively homogeneous heating temperature on the bottom 3 of the heating vessel 2 thus avoiding the points of degradation and burning food.
  • the screen-printed resistive track 7 obtained by screen printing has the advantage of providing a heating means that is easy to produce industrially and inexpensively.
  • the screen-printed resistive track 7 is composed of a nickel-filled polymer material.
  • This polymeric material may be a polyamide imide (PAI), a polyimide (PI), a polyether sulfone (PES), a polyether imide (PEI), a polyphenylene sulfone (PPS), a silicone and an epoxy resin, for example.
  • PAI polyamide imide
  • PI polyimide
  • PES polyether sulfone
  • PPS polyether imide
  • silicone a silicone and an epoxy resin
  • Nickel has the intrinsic property of having a high temperature coefficient (about 0.005 ° C -1 ).
  • the graph of FIG. 6 represents a temperature curve 30 and a power curve 32 as a function of the heating time of the heating vessel 2.
  • FIG. 6 corresponds to a test carried out with a heating vessel 2 comprising 450 ml of water .
  • the graph of FIG. 7 represents a temperature curve 31 and a power curve 33 as a function of the heating time of the heating vessel 2.
  • FIG. 7 corresponds to a test carried out with an empty heating vessel 2 (dry heating) .
  • the axis of the abscissa 34 represents the time
  • the left ordinate axis 35 represents the temperature (in ° C)
  • the right ordinate axis 36 represents the power (in watts).
  • the temperature of the heating vessel 2 eventually stabilizes without the need for thermostat or timer type control means.
  • the heating without thermal regulation makes it possible to avoid "stressing" the food, the rise in temperature being progressive.
  • the food is neither superheated nor transiently cooled (which would be the case if a thermostat was used during cooking).
  • the invention makes it possible to reduce manufacturing costs since no thermostat is used.
  • the combination of a glass heating vessel and a nickel filled polymer track provides an even softer temperature rise since the glass conducts very little heat. There is little risk that the food is charred or thermally stressed.
  • the method of obtaining the track resistive screen printed 7 comprises the following steps:
  • a heating track composed of a nickel-filled polymer is deposited by screen printing on the outer surface 5 of the bottom 3; silver contact or connection pads 8a, 8b are deposited by screen printing at the ends of the screen-printed resistive track 7 forming ends of electrical connections.
  • the silver connection pads 8a, 8b may optionally be fired together with the resistive track in an oven at 300 ° C, provided that the floor has been pre-dried.
  • a protective layer may cover the entire screen-printed resistive track 7 with the exception of the connection pads 8a, 8b.
  • This protective layer is fired at 300 ° C.
  • the bottom 3 and the screen-printed resistive track 7 are then protected from external aggressions thanks to the protective layer.
  • the screen-printed resistive track 7 is ideally designed to operate either with a 12-volt power supply to enable a battery connection such as the battery of a vehicle, or with a 230-volt supply or other.
  • the heating vessel 2 comprises at least two compartments 9a, 9b separated by a partition wall 10.
  • This partition wall 10 is made of glass and is obtained by molding at the same time as the rest of the heating vessel 2.
  • At least one of the compartments 9a of the heating container 2 has a bottom 11a without screen-printed resistive track 7 so as to provide a non-heating compartment 9a to keep food relatively colder.
  • the glass constituting the heating container 2 which has a low coefficient of thermal conduction (approximately 1.2 W / m / K). Thermal transfers between the compartments 9a, 9b are relatively low.
  • FIG. 5 represents a heating vessel 2 comprising two compartments 9a, 9b separated by a separation wall 10, including a non-heating compartment 9a having a bottom 11a without a screen-printed resistive track and a compartment heater 9b having a bottom 11b with a screen-printed resistive track 7.
  • the partition wall 10 extends from one edge to the other of the heating vessel 2 so as to form a semi-disk-shaped compartment 9a, 9b.
  • the partition wall 10 does not cross the center of the heating vessel 2, forming two compartments 9a, 9b having surfaces and unequal volumes.
  • the partition wall 10 passes through the center of the heating vessel 2, forming two compartments 9a, 9b having surfaces and equal volumes.
  • the partition wall 10 may have a generally parallelepipedal shape, and a height of at least 1 cm, for example.
  • the partition wall 10 is obtained by molding the heating vessel 2, together with the rest of the constituent elements (bottom, side wall, flange, handles).
  • the heating vessel 2 may comprise two heated compartments 9a, 9b (not shown). These two compartments 9a, 9b can be heated by the same screen-printed resistive track 7. It is thus possible to transport and heat two distinct dishes without mixing them (for example fish in one compartment, and vegetables in the other compartment).
  • the heating vessel 2 may comprise two compartments 9a, 9b heated and a resistive track serigraphed 7 compartment 9a, 9b. Each resistive screen-printed track 7 is adapted to operate with a different supply voltage (12V or 220V or 110V).
  • the heating vessel 2 may comprise a compartment provided with a screen-printed resistive track 7 adapted to operate with a supply voltage of 12 V, and a compartment provided with a screen-printed resistive track 7 adapted to operate with a voltage 220V power supply.
  • the heating vessel 2 may comprise two compartments 9a, 9b each provided with a screen-printed resistive track 7 adapted to operate with a supply voltage of 220 V.
  • Each screen-printed resistive track 7 is adapted to heat food to different temperatures. It is thus possible to simultaneously heat two different foods, requiring different heating temperatures.
  • the screen-printed resistive tracks 7 are independent and each have their own electrical connections to allow the heating vessel 2 to be heated. It is possible to select the resistive or screened resistive tracks 7 desired according to the type of heating expected. The selection can be made optionally via a manual selector accessible from outside the device or through specific removable connector cords.
  • the upper peripheral rim 12 of the heating vessel 2 comprises a peripheral circumferential rim 14 for centering the bonnet with respect to the heating vessel 2.
  • the peripheral rim of centering 14 projects over the upper face 13 of the upper peripheral rim 12 of the heating vessel 2. It is circular and substantially perpendicular to the upper face 13 of the upper peripheral rim 12.
  • the peripheral rim of centering 14 is positioned as close as possible to the interior of the container of 2.
  • the circumferential centering edge 14 is made of glass.
  • the heating vessel 2 comprises at least one handle 15a, 15b disposed at its periphery for its transport, each handle 15a, 15b being formed by the extension of the upper peripheral rim 12.
  • Each handle 15a, 15b is made of glass.
  • the heating vessel 2 has two handles 15a, 15b opposite. These handles 15a, 15b are parallel to a plane (X, Y), which is substantially horizontal when the heater is placed on a horizontal support. The handles 15a, 15b are also parallel to the bottom 3 of the heating vessel 2.
  • the transportable apparatus 1 comprises a protective shell 16 for receiving the heating vessel 2, thus forming a double wall.
  • a seal is disposed between the protective shell 16 and the upper peripheral rim 12 of the heating vessel 2.
  • the protective shell 16 comprises a bottom 17, a side wall 18 rising from the bottom 17, and two opposite handles 19a, 19b extending from the side wall 18 and outwardly of the protective shell 16.
  • Each handle 19a, 19b of the protective shell 16 comprises a locking means 20a, 20b adapted to block one of the handles 15a, 15b of the heating vessel 2.
  • the heating vessel 2 when positioned on the protective shell 16, is rotatable relative to the protective shell 16 between a locking position in which the handles 15a, 15b of the heating vessel 2 are blocked by the blocking means 20a, 20b, thus keeping the heating vessel 2 against the protective shell 16, and a release position.
  • Each locking means 20a, 20b is formed by an end portion 24 of the handle 19a, 19b of the protective shell 16.
  • the end portion 24 is bent inwardly of the protective shell 16 so as to form a groove 21a, 21b adapted to allow the sliding of one of the handles 15a, 15b of the heating vessel 2 between the locking position in which the handle 15a, 15b of the heating vessel 2 is locked in the groove 21a, 21b, and the release position in which the handle 15a, 15b of the heating vessel 2 is out of the groove 21a, 21b.
  • the thickness of the handle 15a, 15b and the width of the groove 21a, 21b are adapted so that the periphery portion of the handle 15a, 15b can slide in the groove 21a, 21b with a certain resistance.
  • the groove 21a, 21b has a shape of arc.
  • the handle 15a, 15b also comprises a peripheral edge in an arc.
  • the stainless steel heating containers 2 of the prior art are fixed to a protective shell 16 by screws.
  • these fixing means are unsuitable for fixing a glass heating vessel 2.
  • the locking means 20a, 20b according to the invention thus make it possible to fix the glass heating vessel 2 to the protective shell 16. In this way, the user can transport the transportable apparatus 1 safely without risk of dropping the glass heating vessel 2.
  • the transportable apparatus 1 comprises a seal disposed between the heating vessel 2 and the protective shell 16. More specifically, this seal is disposed between the lower wall of the upper peripheral rim 12 of the heating vessel 2 and the upper peripheral edge of the protective shell 16.
  • the seal may be a lip seal or an O-ring, for example.
  • the space between the heating vessel 2 and the protective shell 16 which includes electrical components is watertight, thus allowing the washing and handling of the transportable apparatus 1 without the risk of electrocution or burns.
  • This space between the heating vessel 2 and the protective shell 16 is filled with air, thus forming a double wall. This space provides thermal insulation.
  • the protective shell 16 which is preferably polypropylene, is overmolded by injection around a waterproof connector whose function is to allow a sealed passage of electrical conductors between the outside and the inside of the protective shell 16.
  • this connector Waterproof may have a built-in indicator light signaling the powering up of the heating track.
  • the transportable apparatus 1 comprises a lighting device disposed between the protective shell 16 and the heating vessel 2.
  • the glass used being transparent or semi-transparent, the lighting device allows to illuminate the food in the heating vessel 2 for viewing in the dark.
  • the lighting device also improves the visual impact. It is possible to use different colors of lighting.
  • the screen printed resistive track 7 extends on the outer surface 13 of the bottom 3 of the heating vessel 2 substantially forming a turn.
  • the heating vessel 2 comprises a single screen printed resistive track 7.
  • the two electrical connection pads 8a, 8b are fixed on the bottom 3 of the heating vessel 2 and are positioned next to each other, near the periphery of the bottom 3 of the heating vessel 2.
  • the screen-printed resistive track 7 comprises a first spiral 25 starting from a first electrical connection pad 8a, and wound in a first direction of rotation around the center of the bottom 3, to a central loop 26 positioned in the vicinity of the center from the bottom 3.
  • the screen-printed resistive track 7 comprises a second spiral 27 starting from the central loop 26, and wound in a second direction of rotation opposite to the first direction of rotation around the center of the bottom 3, along the first spiral 25, up to a peripheral loop 28 positioned at the periphery of the bottom 3.
  • the screen-printed resistive track 7 comprises a third spiral 29 starting from the peripheral loop 28, and winding in the first direction of rotation around the center of the bottom 3, along the second spiral 27, to the second electrical connection pad 8b .

Landscapes

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

Abstract

The invention relates to a heating container for reheating food and to a transportable device including such a heating container. The heating container comprises a base (3) and a side wall (6) that extends up from the base (3). The base (3) includes an inner surface (4) intended to receive food and an outer surface (5) provided with at least one screen-printed resistive track (7), said screen-printed resistive track (7) having two ends which are each connected to an electrical bonding pad (8a, 8b) for supplying same with power. According to the invention, the heating container (2) is made entirely from glass.

Description

RECIPIENT DE CHAUFFE POUR LE CHAUFFAGE D'ALIMENTS ET APPAREIL TRANSPORTABLE COMPRENANT UN TEL RECIPIENT DE HEATING CONTAINER FOR HEATING FOODS AND TRANSPORTABLE APPARATUS COMPRISING SUCH A CONTAINER FOR
CHAUFFE La présente invention concerne, de façon générale, le domaine des appareils transportables chauffants pour le chauffage d'aliments. The present invention relates generally to the field of heated transportable apparatus for heating food.
Plus particulièrement, l'invention concerne un récipient de chauffe pour le réchauffage d'aliments et un appareil transportable comprenant ce récipient de chauffe, un couvercle amovible adapté pour fermer hermétiquement le récipient de chauffe, et une coque de protection pour protéger le récipient de chauffe. Le récipient de chauffe comprend un fond, et une paroi latérale se dressant depuis le fond. Le fond présente une surface intérieure destinée à recevoir un aliment et une surface extérieure comprenant au moins une piste résistive sérigraphiée. La piste résistive sérigraphiée comprend deux extrémités qui sont chacune reliée à deux plots de connexion électrique pour son alimentation électrique .  More particularly, the invention relates to a heating vessel for reheating food and a transportable apparatus comprising the heating vessel, a removable lid adapted to seal the heating vessel, and a protective shell to protect the heating vessel. . The heating vessel comprises a bottom, and a side wall rising from the bottom. The bottom has an inner surface for receiving food and an outer surface comprising at least one resistive track screen printed. The screen printed resistive track comprises two ends which are each connected to two electrical connection pads for its power supply.
Un tel appareil chauffant transportable ou portable permet de réchauffer des aliments contenus dans le récipient de chauffe en divers endroits tels que sur le lieu de travail, en camping ou en voiture.  Such a portable or portable heating device can heat food contained in the heating vessel in various places such as the workplace, camping or car.
Le document de l'art antérieur EP 1 824 366 divulgue un appareil chauffant portable comprenant un récipient de chauffe en inox présentant une surface intérieure destinée à recevoir des aliments, qui est recouverte par une couche de matériau alimentaire tel de l'émail, et une surface extérieure comprenant une piste résistive sérigraphiée pour le chauffage du récipient de chauffe. The prior art document EP 1 824 366 discloses a portable heating apparatus comprising a stainless steel heating vessel having an inner surface for receiving food, which is covered by a layer of food material such as enamel, and a outer surface comprising a silkscreened resistive track for heating the heating vessel.
Le procédé de fabrication d'un tel récipient de chauffe de l'art antérieur comprend une étape d'emboutissage pour former un récipient en inox, une étape de dépôt d'un émail sur la surface interne du récipient, et au moins une étape de dépôt d'une piste résistive sérigraphiée sur la surface externe du récipient de chauffe.  The method of manufacturing such a heating vessel of the prior art comprises a drawing step to form a stainless steel container, a step of depositing an enamel on the inner surface of the container, and at least one step of deposit of a resistive track silkscreened on the outer surface of the heating vessel.
La piste sérigraphiée est classiquement composée de plusieurs couches successives, entraînant les étapes de dépôt suivantes :  The silkscreened track is conventionally composed of several successive layers, resulting in the following deposition steps:
une couche d'émail diélectrique est appliquée en une fois ou deux fois par pistolage ou en trois ou cinq couches par sérigraphie pour permettre l'accroche et l'isolation électrique de la piste résistive sérigraphiée ;  a dielectric enamel layer is applied in one or two times by spraying or in three or five layers by screen printing to allow attachment and electrical insulation of the screen-printed resistive track;
ces couches sont cuites au four à environ 850°C;  these layers are baked at about 850 ° C;
- une piste chauffante composée d'émail résistif est appliquée par sérigraphie sur la couche d'émail diélectrique ;  a heating track composed of resistive enamel is applied by screen printing to the dielectric enamel layer;
des plots de contact en argent sont déposés par sérigraphie aux extrémités de la piste résistive sérigraphiée formant les extrémités de connexions électriques.  silver contact pads are deposited by screen printing at the ends of the screen-printed resistive track forming the ends of electrical connections.
Les plots de contact en argent peuvent être cuits ensembles avec la piste résistive dans un four à 700°C, sous réserve d' avoir effectué un séchage préalable du fond. Enfin, une couche de protection recouvre la totalité de la piste résistive sérigraphiée à l'exception des portions des extrémités de connexions. Cette couche de protection est alors cuite à 650°C. The silver contact pads may be fired together with the resistive track in an oven at 700 ° C, provided that prior drying of the bottom has been carried out. Finally, a protective layer covers the entire screened resistive track with the exception of the portions of the connection ends. This protective layer is then fired at 650 ° C.
Ces multiples étapes entraînent des temps de fabrication très longs, des coûts de fabrication élevés, ainsi qu'un impact environnemental négatif dû entre autre aux multiples cuissons et aux températures de cuisson élevées.  These multiple steps lead to very long manufacturing times, high manufacturing costs, as well as a negative environmental impact due, among other things, to multiple cooking and high cooking temperatures.
La présente invention a ainsi pour but de fournir un récipient de chauffe et un appareil culinaire transportable pour le réchauffage d'aliments d'encombrement réduit, moins cher à fabriquer, et ayant un impact environnemental réduit.  The object of the present invention is therefore to provide a heating container and a transportable culinary apparatus for heating food with reduced dimensions, which is less expensive to manufacture and has a reduced environmental impact.
L' invention concerne un récipient de chauffe pour le réchauffage d'aliments comprenant un fond, et une paroi latérale se dressant depuis le fond, ledit fond présentant une surface intérieure destinée à recevoir un aliment et une surface extérieure sur laquelle est disposée au moins une piste résistive sérigraphiée, ladite piste résistive sérigraphiée présentant deux extrémités reliées chacune à un plot de connexion électrique pour son alimentation électrique.  The invention relates to a heating container for heating food comprising a bottom, and a side wall rising from the bottom, said bottom having an inner surface for receiving food and an outer surface on which is arranged at least one resistive track silkscreened, said screenprinted resistive track having two ends each connected to an electrical connection pad for its power supply.
Selon l'invention, le récipient de chauffe est entièrement en verre. Seule la piste sérigraphiée et les plots de connexion ne sont pas en verre. Le récipient de chauffe est formé d'une seule pièce, exceptée la piste sérigraphiée et les plots de connexion .  According to the invention, the heating vessel is entirely made of glass. Only the screen-printed track and the connection pads are not made of glass. The heating vessel is formed in one piece, except for the screen printed track and the connection pads.
L' invention concerne également un appareil transportable comprenant un récipient de chauffe tel que défini précédemment, un couvercle amovible adapté à fermer hermétiquement le récipient de chauffe, et une coque protectrice destinée à supporter et protéger le récipient de chauffe, formant ainsi une double paroi. Un joint d'étanchéité peut être disposé entre la coque protectrice et le rebord périphérique supérieur du récipient de chauffe. The invention also relates to a transportable apparatus comprising a heating vessel such as as defined above, a removable cover adapted to seal the heating vessel, and a protective shell for supporting and protecting the heating vessel, thereby forming a double wall. A seal may be disposed between the protective shell and the upper peripheral rim of the heating vessel.
Le terme transportable signifie que l'appareil peut être déplacé et utilisé pour transporter des aliments à réchauffer entre des lieux éloignés tels qu'entre le domicile où l'utilisateur a préparé des aliments et le lieu de travail où il souhaite consommer ces aliments, cet appareil pouvant être porté manuellement et sans effort par l'utilisateur. Pour être transportable, un tel appareil doit peser à vide, c'est à dire sans aliment, moins de 5 kilogrammes et ne doit pas excéder un volume d'encombrement parallélépipédique rectangle dont les dimensions sont inférieures à 1 mètre.  The term transportable means that the apparatus can be moved and used to transport food to be heated between distant places such as between the home where the user has prepared food and the workplace where he wishes to consume such food, this device that can be carried manually and effortlessly by the user. To be portable, such a device must weigh empty, that is to say without food, less than 5 kilograms and must not exceed a volume of parallelepiped rectangle dimensions whose dimensions are less than 1 meter.
L' invention permet donc de fournir un appareil transportable pour le réchauffage d'aliments, d'encombrement réduit et nécessitant moins d'étapes de fabrication, et surtout moins d'étapes de recuit. L' invention permet de fabriquer un récipient de chauffe ne nécessitant qu'une seule étape de cuisson alors que trois à cinq étapes de cuissons sont nécessaires lorsque l'on utilise un récipient de chauffe en inox de l'art antérieur.  The invention therefore makes it possible to provide a transportable apparatus for reheating food, of reduced size and requiring fewer manufacturing steps, and especially fewer annealing steps. The invention makes it possible to manufacture a heating vessel requiring only one cooking step while three to five cooking stages are necessary when using a stainless steel heating vessel of the prior art.
Le verre utilisé est de préférence un verre alimentaire du type borosilicate qui peut être mis en contact directement avec des aliments, et qui ne nécessite pas d'étapes de fabrication supplémentaires comme des étapes de traitement ou de dépôt de couches de matériaux alimentaires sur la face interne du récipient. L'utilisation du verre n'entraine pas non plus une étape de dépôt d'une fine couche isolante électriquement sur la surface externe du récipient, contrairement aux procédés de fabrication de l'art antérieur utilisant un récipient en inox. The glass used is preferably a food glass of the borosilicate type which can be put in direct contact with food, and which does not does not require additional manufacturing steps such as processing steps or deposition of layers of food materials on the inner face of the container. The use of the glass does not involve either a step of depositing a thin electrically insulating layer on the outer surface of the container, unlike the manufacturing processes of the prior art using a stainless steel container.
On obtient ainsi un récipient de chauffe moins long à fabriquer, moins cher, et entraînant un impact environnemental réduit.  This results in a shorter heating vessel to manufacture, cheaper, and resulting in reduced environmental impact.
De plus, le verre étant thermiquement peu conducteur, il est possible de prévoir plusieurs compartiments dans le récipient dont un compartiment chauffant et un compartiment non chauffant. Il est également possible de prévoir deux compartiments chauffants distincts, chaque compartiment pouvant être chauffé à une température différente.  In addition, the glass being thermally insensitive, it is possible to provide several compartments in the container including a heating compartment and a non-heating compartment. It is also possible to provide two separate heating compartments, each compartment can be heated to a different temperature.
L'utilisation du verre permet également d'améliorer l'impact visuel. L'utilisateur peut visualiser la ou les pistes résistives sérigraphiées.  The use of glass also improves the visual impact. The user can view the resistive track or serigraphs.
D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels:  Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
la figure 1 représente une vue éclatée d'un appareil transportable pour le chauffage d'aliments selon un mode de réalisation de l'invention ;  Figure 1 shows an exploded view of a transportable apparatus for heating food according to one embodiment of the invention;
- la figure 2 représente une vue en perspective de cet appareil transportable prêt à l'utilisation ; - la figure 3 représente une vue en perspective montrant le dessus du récipient de chauffe de cet appareil transportable ; FIG. 2 represents a perspective view of this transportable device ready for use; FIG. 3 is a perspective view showing the top of the heating vessel of this transportable apparatus;
- la figure 4 représente une vue en perspective montrant le dessous du récipient de chauffe de cet appareil transportable ;  FIG. 4 represents a perspective view showing the underside of the heating vessel of this transportable apparatus;
- la figure 5 représente une vue en perspective d'un récipient de chauffe selon un autre mode de réalisation de l'invention ;  - Figure 5 shows a perspective view of a heating vessel according to another embodiment of the invention;
- les figures 6 et 7 représentent des courbes de températures et de puissances en fonction du temps de chauffe, la figure 6 correspond à un récipient de chauffe comprenant 450 ml d'eau, et la figure 7 correspond à un récipient de chauffe vide (chauffe à sec) .  FIGS. 6 and 7 show temperature and power curves as a function of heating time, FIG. 6 corresponds to a heating vessel comprising 450 ml of water, and FIG. 7 corresponds to an empty heating vessel (heater). dried up) .
Comme annoncé précédemment, l'invention concerne un récipient de chauffe 2 pour le réchauffage d'aliments et un appareil transportable 1 comprenant un tel récipient de chauffe 2 pour transporter, stocker, réchauffer de la nourriture préalablement préparée, la servir et la consommer à l'aide d'un seul et même récipient .  As previously announced, the invention relates to a heating vessel 2 for reheating food and a transportable apparatus 1 comprising such a heating vessel 2 for transporting, storing, reheating previously prepared food, serving it and consuming it at the same time. help from one and the same container.
Comme représenté sur les figures 1 et 2, l'appareil transportable 1 pour le réchauffage d'aliments comprend un récipient de chauffe 2 et un couvercle amovible 16' adapté à fermer hermétiquement le récipient de chauffe 2. Ce récipient de chauffe 2 comprend un fond 3, et une paroi latérale 6 se dressant depuis le fond 3. Le fond 3 présente une surface intérieure 4 destinée à recevoir un aliment et une surface extérieure 5 comprenant au moins une piste résistive sérigraphiée 7. La piste résistive sérigraphiée 7 comprend deux extrémités qui sont chacune reliée à deux plots de connexion électrique 8a, 8b pour son alimentation électrique. La piste résistive sérigraphiée 7 et les plots de connexion électrique 8a, 8b sont fixés sur la surface extérieure 5 du fond 3. As shown in FIGS. 1 and 2, the transportable apparatus 1 for reheating food comprises a heating container 2 and a removable lid 16 'adapted to seal the heating container 2. This heating container 2 comprises a bottom 3, and a side wall 6 rising from the bottom 3. The bottom 3 has an inner surface 4 for receiving food and an outer surface 5 comprising at least one track Resistive Screen-printed 7. The screen-printed resistive track 7 comprises two ends which are each connected to two electrical connection pads 8a, 8b for its power supply. The screen-printed resistive track 7 and the electrical connection pads 8a, 8b are fixed on the outer surface 5 of the base 3.
Le récipient de chauffe 2 est entièrement en verre. Seule la piste sérigraphiée et les plots de connexion ne sont pas en verre. Le récipient de chauffe 2 en verre est formé d'une seule pièce, exceptée la piste sérigraphiée et les plots de connexion. Le récipient de chauffe 2 est fabriqué lors d'une étape de moulage. Le verre constituant le récipient de chauffe 2 est un verre alimentaire qui peut être un verre trempé du type boro-silicate ou fluosilicate ou vitro- céramique .  The heating vessel 2 is entirely made of glass. Only the screen-printed track and the connection pads are not made of glass. The glass heating vessel 2 is formed in one piece, except for the screen printed track and the connection pads. The heating vessel 2 is manufactured during a molding step. The glass constituting the heating container 2 is a food glass which may be a borosilicate or fluosilicate or glass ceramic type toughened glass.
De préférence, le verre est du type boro-silicate car c'est un verre alimentaire qui peut être facilement moulé et qui est résistant aux températures appliquées pour chauffer les aliments. La conductibilité thermique du borosilicate est de 1.2 W/m/K.  Preferably, the glass is of the borosilicate type because it is a food glass that can be easily molded and is resistant to the temperatures applied to heat the food. The thermal conductivity of the borosilicate is 1.2 W / m / K.
Selon un mode de réalisation possible, le verre constituant le récipient de chauffe 2 est au moins localement dépoli, coloré ou opaque, afin de masquer la piste chauffante sérigraphiée 7. Par exemple, le fond 3 du récipient de chauffe 2 peut être entièrement dépoli.  According to one possible embodiment, the glass constituting the heating vessel 2 is at least locally frosted, colored or opaque, in order to mask the screen-printed heating track 7. For example, the bottom 3 of the heating vessel 2 may be entirely frosted.
Le récipient de chauffe 2 est en forme d'assiette et présente de préférence une forme circulaire. Le récipient 2 est plus large que profond. Il présente une épaisseur d'au moins 1 mm et de préférence comprise entre 1 mm et 10 mm. Le fond 3 du récipient de chauffe 2 est sensiblement plat et est solidaire d'une paroi latérale 6 circulaire. La paroi latérale 6 du récipient 2 va en s' évasant en partant du fond 3 du récipient 2 et en allant vers le bord supérieur du récipient, formant ainsi une assiette chauffante transportable. Un tel récipient peut être réalisé par des procédés connus pour fabriquer des récipients en verre. The heating vessel 2 is dish-shaped and preferably has a circular shape. The container 2 is wider than deep. It has a thickness of at least 1 mm and preferably between 1 mm and 10 mm. The bottom 3 of the heating vessel 2 is substantially flat and is integral with a circular side wall 6. The side wall 6 of the container 2 flares away from the bottom 3 of the container 2 and towards the upper edge of the container, thereby forming a transportable heating plate. Such a container may be made by known methods for making glass containers.
Le récipient de chauffe 2 comprend un rebord périphérique supérieur 12 s' étendant depuis la paroi latérale 6 du récipient de chauffe 2, au niveau de sa partie supérieure, et vers l'extérieur du récipient de chauffe 2. Le rebord périphérique supérieur 12 présente une surface inférieure 13' et une surface supérieure 13 adaptée à supporter le couvercle amovible 16' . Le rebord périphérique supérieur 12 est parallèle à un plan (X,Y), qui est lui-même parallèle au fond 3. Le rebord périphérique supérieur 12 présente une largeur d'au moins 2 mm et de préférence comprise entre 2 mm et 10 mm.  The heating vessel 2 comprises an upper peripheral rim 12 extending from the side wall 6 of the heating vessel 2, at its upper part, and towards the outside of the heating vessel 2. The upper peripheral rim 12 has a lower surface 13 'and an upper surface 13 adapted to support the removable cover 16'. The upper peripheral flange 12 is parallel to a plane (X, Y), which is itself parallel to the bottom 3. The upper peripheral flange 12 has a width of at least 2 mm and preferably between 2 mm and 10 mm .
Le couvercle amovible 16' est adapté pour fermer hermétiquement le récipient 2, et possède pour cela un joint compressible sur toute la surface de contact entre le couvercle et la surface supérieure 13 du rebord périphérique supérieur 12 du récipient de chauffe 2. Ce joint compressible est préférentiellement en caoutchouc nitrile (NBR) ou en silicone et peut être un joint de type autocuiseur. Le couvercle peut être en polypropylène .  The removable cover 16 'is adapted to seal the container 2, and has a compressible seal thereon over the entire contact area between the lid and the upper surface 13 of the upper peripheral flange 12 of the heating container 2. This compressible seal is preferably nitrile rubber (NBR) or silicone and may be a seal pressure cooker type. The lid may be polypropylene.
Ce récipient de chauffe 2 peut être ainsi fermé hermétiquement au moins durant la phase de transport de l'assiette chauffante afin d'éviter de renverser la nourriture, afin de la maintenir au chaud si elle a été préalablement préchauffée ou afin d'éviter de la dégrader . This heating vessel 2 can thus be hermetically sealed at least during the transport phase of the heating plate to avoid spilling the food, to keep it warm if it has been preheated or to avoid degrading it.
Les plots de connexion électrique 8a, 8b qui sont positionnés aux deux extrémités de la piste résistive sérigraphiée 7 et cette dernière sont en contact avec la surface extérieure 5 du fond 3 du récipient de chauffe 2. Grâce à cette disposition, la chaleur produite par la piste résistive sérigraphiée 7 est transmise par conduction directement vers l'aliment contenu dans le récipient de chauffe 2 en ne traversant que l'épaisseur du fond 3 du récipient de chauffe 2 en verre. La piste résistive sérigraphiée 7 est une pâte conductrice sérigraphiée en forme de piste allongée.  The electrical connection pads 8a, 8b which are positioned at the two ends of the screen-printed resistive track 7 and the latter are in contact with the outer surface 5 of the bottom 3 of the heating vessel 2. Thanks to this arrangement, the heat produced by the resistive track serigraphed 7 is transmitted by conduction directly to the food contained in the heating vessel 2 by passing through the thickness of the bottom 3 of the heating vessel 2 glass. The screen-printed resistive track 7 is a screen printed conductive paste in the form of an elongate track.
La surface de contact entre la piste résistive sérigraphiée 7 et le récipient de chauffe 2 est importante. Elle permet d'améliorer le rendement de l'appareil ainsi que l'homogénéité de chauffe. Cette surface de contact représente au moins 40% de la surface utile qui est aussi appelée surface de chauffe du fond 3 du récipient de chauffe 2. En d' autres termes, la piste résistive sérigraphiée 7 recouvre au moins 40% de la surface extérieure 5 du fond 3.  The contact surface between the screen printed resistive track 7 and the heating vessel 2 is important. It improves the performance of the device and the homogeneity of heating. This contact surface represents at least 40% of the useful area which is also called the heating surface of the bottom 3 of the heating vessel 2. In other words, the screen-printed resistive track 7 covers at least 40% of the outer surface 5 from the bottom 3.
Préférentiellement , au moins 60% de la surface de chauffe du fond 3 est recouverte par la piste résistive sérigraphiée 7. Cette caractéristique permet d'avoir une température de chauffe relativement homogène sur le fond 3 du récipient de chauffe 2 évitant ainsi les points de dégradation et de brûlure des aliments. La piste résistive sérigraphiée 7 obtenue par sérigraphie à l'avantage de fournir un moyen de chauffe facile à produire industriellement et peu coûteux. Preferably, at least 60% of the heating surface of the bottom 3 is covered by the screen-printed resistive track 7. This characteristic makes it possible to have a relatively homogeneous heating temperature on the bottom 3 of the heating vessel 2 thus avoiding the points of degradation and burning food. The screen-printed resistive track 7 obtained by screen printing has the advantage of providing a heating means that is easy to produce industrially and inexpensively.
Avantageusement, la piste résistive sérigraphiée 7 est composée d'un matériau polymère chargé de nickel. Ce matériau polymère peut être un polyamide imide (PAI), un polyimide (PI), un polyéther sulfone (PES) , un polyéther imide (PEI), une polyphénylène sulfone (PPS) , une silicone et une résine époxy, par exemple. Le document FR 2 871 650 décrit un exemple de piste résistive sérigraphiée à base de matériau polymère qui peut être utilisée et son procédé d'obtention.  Advantageously, the screen-printed resistive track 7 is composed of a nickel-filled polymer material. This polymeric material may be a polyamide imide (PAI), a polyimide (PI), a polyether sulfone (PES), a polyether imide (PEI), a polyphenylene sulfone (PPS), a silicone and an epoxy resin, for example. The document FR 2 871 650 describes an example of a screen-printed resistive track based on a polymer material that can be used and its method of production.
Le nickel a la propriété intrinsèque d' avoir un fort coefficient de température (environ 0,005 °C-1) . Nickel has the intrinsic property of having a high temperature coefficient (about 0.005 ° C -1 ).
C'est-à-dire que plus la température de la piste résistive sérigraphiée 7 augmente, plus sa valeur ohmique augmente, et plus la puissance diminue.  That is, the higher the temperature of the screen-printed resistive track 7, the higher its resistance value, and the lower the power.
Le graphique de la figure 6 représente une courbe de température 30 et une courbe de puissance 32 en fonction du temps de chauffe du récipient de chauffe 2. La figure 6 correspond à un test réalisé avec un récipient de chauffe 2 comprenant 450 ml d'eau.  The graph of FIG. 6 represents a temperature curve 30 and a power curve 32 as a function of the heating time of the heating vessel 2. FIG. 6 corresponds to a test carried out with a heating vessel 2 comprising 450 ml of water .
Le graphique de la figure 7 représente une courbe de température 31 et une courbe de puissance 33 en fonction du temps de chauffe du récipient de chauffe 2. La figure 7 correspond à un test réalisé avec un récipient de chauffe 2 vide (chauffe à sec) .  The graph of FIG. 7 represents a temperature curve 31 and a power curve 33 as a function of the heating time of the heating vessel 2. FIG. 7 corresponds to a test carried out with an empty heating vessel 2 (dry heating) .
L'axe des abscisses 34 représente le temps, l'axe des ordonnées de gauche 35 représente la température (en °C) , et l'axe des ordonnées de droite 36 représente la puissance (en watt) . Lorsque le récipient de chauffe 2 fonctionne avec de l'eau, comme représenté sur la figure 6, la température de la piste résistive sérigraphiée 7 s'élève doucement (courbe 30), puisqu'elle transfère ses calories à l'eau. La puissance (courbe 32) baisse doucement également. The axis of the abscissa 34 represents the time, the left ordinate axis 35 represents the temperature (in ° C), and the right ordinate axis 36 represents the power (in watts). When the heating vessel 2 is operating with water, as shown in FIG. 6, the temperature of the screenprinted resistive track 7 rises slowly (curve 30), since it transfers its calories to the water. The power (curve 32) also lowers slowly.
En fonctionnement à sec (sans aliments) , comme représentée sur la figure 7, la température de la piste résistive sérigraphiée 7 monte plus vite (courbe 31) et sa puissance (courbe 33) chute d'autant plus vite.  In dry operation (without food), as shown in FIG. 7, the temperature of the screen-printed resistive track 7 rises faster (curve 31) and its power (curve 33) falls all the faster.
Dans les deux cas, la température du récipient de chauffe 2 finit par se stabiliser sans avoir besoin de moyen de régulation du type thermostat ou de minuterie.  In both cases, the temperature of the heating vessel 2 eventually stabilizes without the need for thermostat or timer type control means.
Le chauffage sans régulation thermique (c'est-à- dire sans régulation tout ou rien via un thermostat) permet d'éviter de « stresser » les aliments, la montée de température étant progressive. Grâce à ce mode de réalisation de l'invention, l'aliment n'est ni surchauffé, ni refroidi transitoirement (ce qui serait le cas si un thermostat était utilisé durant la cuisson) . De plus, l'invention permet de diminuer les coûts de fabrication puisque l'on n'utilise pas de thermostat. La combinaison d'un récipient de chauffe en verre et d'une piste en polymère chargée de nickel permet d' obtenir une montée en température encore plus douce puisque le verre conduit très peu la chaleur. Il y a donc peu de risque que les aliments soient carbonisés, ou stressés thermiquement .  The heating without thermal regulation (that is to say without all-or-nothing regulation via a thermostat) makes it possible to avoid "stressing" the food, the rise in temperature being progressive. With this embodiment of the invention, the food is neither superheated nor transiently cooled (which would be the case if a thermostat was used during cooking). In addition, the invention makes it possible to reduce manufacturing costs since no thermostat is used. The combination of a glass heating vessel and a nickel filled polymer track provides an even softer temperature rise since the glass conducts very little heat. There is little risk that the food is charred or thermally stressed.
Selon un mode de réalisation possible de l'invention, le procédé d'obtention de la piste résistive sérigraphiée 7 comprend les étapes suivantes : According to one possible embodiment of the invention, the method of obtaining the track resistive screen printed 7 comprises the following steps:
une piste chauffante composée d'un polymère chargé en nickel est déposée par sérigraphie sur la surface extérieure 5 du fond 3 ; des plots de contact ou de connexion 8a, 8b en argent sont déposés par sérigraphie aux extrémités de la piste résistive sérigraphiée 7 formant des extrémités de connexions électriques.  a heating track composed of a nickel-filled polymer is deposited by screen printing on the outer surface 5 of the bottom 3; silver contact or connection pads 8a, 8b are deposited by screen printing at the ends of the screen-printed resistive track 7 forming ends of electrical connections.
Les plots de connexion 8a, 8b en argent peuvent éventuellement être cuits ensembles avec la piste résistive dans un four à 300°C, sous réserve d'avoir effectué un séchage préalable du fond.  The silver connection pads 8a, 8b may optionally be fired together with the resistive track in an oven at 300 ° C, provided that the floor has been pre-dried.
L'utilisation d'une telle piste résistive sérigraphiée 7 en polymère permet de réaliser un recuit à une température plus basse que celle des procédés de l'art antérieur, réduisant le coût de fabrication, et améliorant l'impact sur l'environnement.  The use of such a screen-printed resistive strip 7 makes it possible to anneal at a lower temperature than that of the processes of the prior art, reducing the manufacturing cost and improving the impact on the environment.
Eventuellement, une couche de protection peut recouvrir la totalité de la piste résistive sérigraphiée 7 à l'exception des plots de connexion 8a, 8b. Cette couche de protection est cuite à 300°C. Le fond 3 et la piste résistive sérigraphiée 7 sont alors protégés des agressions extérieures grâce à la couche de protection.  Optionally, a protective layer may cover the entire screen-printed resistive track 7 with the exception of the connection pads 8a, 8b. This protective layer is fired at 300 ° C. The bottom 3 and the screen-printed resistive track 7 are then protected from external aggressions thanks to the protective layer.
La puissance de chauffe surfacique est définie judicieusement pour permettre le réchauffage d'aliments tout en évitant qu' il y ait carbonisation de ces aliments. Pour cela, la piste est idéalement prévue pour que les aliments présents dans le récipient de chauffe puissent être réchauffés au delà de 63°C et dans un temps de l'ordre de 15 à 25 minutes pour un plat individuel en sauce de 400 grammes. The surface heating power is judiciously defined to allow food to be reheated while avoiding the carbonization of these foods. For this, the track is ideally planned so that the food in the heating vessel can be heated above 63 ° C and in a time of about 15 to 25 minutes for an individual dish in sauce of 400 grams.
La piste résistive sérigraphiée 7 est idéalement prévue pour fonctionner soit avec une alimentation en 12 Volts pour permettre un branchement sur batterie telle que la batterie d'un véhicule, soit avec une alimentation en 230 Volts ou autre.  The screen-printed resistive track 7 is ideally designed to operate either with a 12-volt power supply to enable a battery connection such as the battery of a vehicle, or with a 230-volt supply or other.
Selon un mode de réalisation de l'invention, le récipient de chauffe 2 comporte au moins deux compartiments 9a, 9b séparés par une paroi de séparation 10. Cette paroi de séparation 10 est en verre et est obtenue par moulage en même temps que le reste du récipient de chauffe 2.  According to one embodiment of the invention, the heating vessel 2 comprises at least two compartments 9a, 9b separated by a partition wall 10. This partition wall 10 is made of glass and is obtained by molding at the same time as the rest of the heating vessel 2.
Selon un autre mode de réalisation possible de l'invention, au moins un des compartiments 9a du récipient de chauffe 2 présente un fond lia sans piste résistive sérigraphiée 7 de façon à fournir un compartiment non chauffant 9a permettant de garder des aliments relativement plus froids. Ceci est possible grâce au verre constituant le récipient de chauffe 2 qui présente un faible coefficient de conduction thermique (environ 1.2W/m/K). Les transferts thermiques entre les compartiments 9a, 9b sont donc relativement faibles .  According to another possible embodiment of the invention, at least one of the compartments 9a of the heating container 2 has a bottom 11a without screen-printed resistive track 7 so as to provide a non-heating compartment 9a to keep food relatively colder. This is possible thanks to the glass constituting the heating container 2 which has a low coefficient of thermal conduction (approximately 1.2 W / m / K). Thermal transfers between the compartments 9a, 9b are relatively low.
L'exemple de la figure 5 représente un récipient de chauffe 2 comportant deux compartiments 9a, 9b séparés par une paroi de séparation 10 dont un compartiment non chauffant 9a présentant un fond lia sans piste résistive sérigraphiée et un compartiment chauffant 9b présentant un fond 11b avec une piste résistive sérigraphiée 7. La paroi de séparation 10 s'étend d'un bord à l'autre du récipient de chauffe 2 de façon à former un compartiment 9a, 9b en forme de demi-disque. Dans cet exemple, la paroi de séparation 10 ne traverse pas le centre du récipient de chauffe 2, formant deux compartiments 9a, 9b ayant des surfaces et des volumes inégaux. The example of FIG. 5 represents a heating vessel 2 comprising two compartments 9a, 9b separated by a separation wall 10, including a non-heating compartment 9a having a bottom 11a without a screen-printed resistive track and a compartment heater 9b having a bottom 11b with a screen-printed resistive track 7. The partition wall 10 extends from one edge to the other of the heating vessel 2 so as to form a semi-disk-shaped compartment 9a, 9b. In this example, the partition wall 10 does not cross the center of the heating vessel 2, forming two compartments 9a, 9b having surfaces and unequal volumes.
En variante, la paroi de séparation 10 traverse le centre du récipient de chauffe 2, formant deux compartiments 9a, 9b ayant des surfaces et des volumes égaux .  Alternatively, the partition wall 10 passes through the center of the heating vessel 2, forming two compartments 9a, 9b having surfaces and equal volumes.
La paroi de séparation 10 peut présenter une forme générale parallélépipédique, et une hauteur d'au moins 1 cm, par exemple.  The partition wall 10 may have a generally parallelepipedal shape, and a height of at least 1 cm, for example.
La paroi de séparation 10 est obtenue par moulage du récipient de chauffe 2, en même temps que le reste des éléments le constituant (fond, paroi latérale, rebord, poignées) .  The partition wall 10 is obtained by molding the heating vessel 2, together with the rest of the constituent elements (bottom, side wall, flange, handles).
On peut ainsi stocker une entrée froide dans le compartiment non chauffant 9a, et réchauffer un autre aliment dans le compartiment chauffant 9b.  It is thus possible to store a cold inlet in the non-heating compartment 9a, and to heat another food in the heating compartment 9b.
Le récipient de chauffe 2 peut comprendre deux compartiments 9a, 9b chauffés (non représentés) . Ces deux compartiments 9a, 9b peuvent être chauffés par une même piste résistive sérigraphiée 7. Il est ainsi possible de transporter et réchauffer deux plats distincts sans les mélanger (par exemple du poisson dans un compartiment, et des légumes dans l'autre compartiment) . En variante, le récipient de chauffe 2 peut comprendre deux compartiments 9a, 9b chauffés et une piste résistive sérigraphiée 7 par compartiment 9a, 9b. Chaque piste résistive sérigraphiée 7 est adaptée pour fonctionner avec une tension d'alimentation différente (12V ou 220V ou 110V) . The heating vessel 2 may comprise two heated compartments 9a, 9b (not shown). These two compartments 9a, 9b can be heated by the same screen-printed resistive track 7. It is thus possible to transport and heat two distinct dishes without mixing them (for example fish in one compartment, and vegetables in the other compartment). Alternatively, the heating vessel 2 may comprise two compartments 9a, 9b heated and a resistive track serigraphed 7 compartment 9a, 9b. Each resistive screen-printed track 7 is adapted to operate with a different supply voltage (12V or 220V or 110V).
Par exemple, le récipient de chauffe 2 peut comprendre un compartiment muni d'une piste résistive sérigraphiée 7 adaptée pour fonctionner avec une tension d'alimentation de 12 V, et un compartiment muni d'une piste résistive sérigraphiée 7 adaptée pour fonctionner avec une tension d'alimentation de 220V.  For example, the heating vessel 2 may comprise a compartment provided with a screen-printed resistive track 7 adapted to operate with a supply voltage of 12 V, and a compartment provided with a screen-printed resistive track 7 adapted to operate with a voltage 220V power supply.
En variante, le récipient de chauffe 2 peut comprendre deux compartiments 9a, 9b munis chacun d'une piste résistive sérigraphiée 7 adaptée pour fonctionner avec une tension d'alimentation de 220 V. Chaque piste résistive sérigraphiée 7 est adaptée pour chauffer les aliments à des températures différentes. Il est ainsi possible de chauffer simultanément deux aliments différents, nécessitant des températures de chauffage différentes .  Alternatively, the heating vessel 2 may comprise two compartments 9a, 9b each provided with a screen-printed resistive track 7 adapted to operate with a supply voltage of 220 V. Each screen-printed resistive track 7 is adapted to heat food to different temperatures. It is thus possible to simultaneously heat two different foods, requiring different heating temperatures.
Dans ce cas, les pistes résistives sérigraphiées 7 sont indépendantes et ont chacune des connexions électriques propres pour permettre de chauffer le récipient de chauffe 2. Il est possible de sélectionner la ou les pistes résistives sérigraphiées 7 souhaitées selon le type de chauffe attendu. La sélection peut être éventuellement effectuée via un sélecteur manuel accessible depuis l'extérieur de l'appareil ou grâce à des cordons connecteurs spécifiques amovibles. Selon un mode de réalisation possible de l'invention, le rebord périphérique supérieur 12 du récipient de chauffe 2 comprend une bordure périphérique de centrage 14 pour centrer le capot par rapport au récipient de chauffe 2. La bordure périphérique de centrage 14 fait saillie sur la face supérieure 13 du rebord périphérique supérieur 12 du récipient de chauffe 2. Elle est circulaire et sensiblement perpendiculaire à la face supérieure 13 du rebord périphérique supérieur 12. La bordure périphérique de centrage 14 est positionnée le plus près possible de l'intérieure du récipient de chauffe 2. La bordure périphérique de centrage 14 est en verre. In this case, the screen-printed resistive tracks 7 are independent and each have their own electrical connections to allow the heating vessel 2 to be heated. It is possible to select the resistive or screened resistive tracks 7 desired according to the type of heating expected. The selection can be made optionally via a manual selector accessible from outside the device or through specific removable connector cords. According to a possible embodiment of the invention, the upper peripheral rim 12 of the heating vessel 2 comprises a peripheral circumferential rim 14 for centering the bonnet with respect to the heating vessel 2. The peripheral rim of centering 14 projects over the upper face 13 of the upper peripheral rim 12 of the heating vessel 2. It is circular and substantially perpendicular to the upper face 13 of the upper peripheral rim 12. The peripheral rim of centering 14 is positioned as close as possible to the interior of the container of 2. The circumferential centering edge 14 is made of glass.
Selon un mode de réalisation possible de l'invention, le récipient de chauffe 2 comporte au moins une poignée 15a, 15b disposée à sa périphérie pour son transport, chaque poignée 15a, 15b étant formée par le prolongement du rebord périphérique supérieur 12. Chaque poignée 15a, 15b est en verre.  According to a possible embodiment of the invention, the heating vessel 2 comprises at least one handle 15a, 15b disposed at its periphery for its transport, each handle 15a, 15b being formed by the extension of the upper peripheral rim 12. Each handle 15a, 15b is made of glass.
Dans les exemples des figures 1 à 5, le récipient de chauffe 2 comporte deux poignées 15a, 15b opposées. Ces poignées 15a, 15b sont parallèles à un plan (X,Y), qui est sensiblement horizontal lorsque l'appareil de chauffe est posé sur un support horizontal. Les poignées 15a, 15b sont également parallèles au fond 3 du récipient de chauffe 2.  In the examples of Figures 1 to 5, the heating vessel 2 has two handles 15a, 15b opposite. These handles 15a, 15b are parallel to a plane (X, Y), which is substantially horizontal when the heater is placed on a horizontal support. The handles 15a, 15b are also parallel to the bottom 3 of the heating vessel 2.
L'appareil transportable 1 comporte une coque protectrice 16 destinée à recevoir le récipient de chauffe 2, formant ainsi une double paroi. Un joint d'étanchéité est disposé entre la coque protectrice 16 et le rebord périphérique supérieur 12 du récipient de chauffe 2. The transportable apparatus 1 comprises a protective shell 16 for receiving the heating vessel 2, thus forming a double wall. A seal is disposed between the protective shell 16 and the upper peripheral rim 12 of the heating vessel 2.
La coque protectrice 16 comprend un fond 17, une paroi latérale 18 se dressant depuis le fond 17, et deux poignées opposées 19a, 19b s' étendant depuis la paroi latérale 18 et vers l'extérieur de la coque protectrice 16. Chaque poignée 19a, 19b de la coque protectrice 16 comprend un moyen de blocage 20a, 20b apte à bloquer une des poignées 15a, 15b du récipient de chauffe 2. Le récipient de chauffe 2, lorsqu'il est positionné sur la coque protectrice 16, est mobile en rotation par rapport à la coque protectrice 16 entre une position de blocage dans laquelle les poignées 15a, 15b du récipient de chauffe 2 sont bloquées par les moyens de blocage 20a, 20b, maintenant ainsi le récipient de chauffe 2 contre la coque protectrice 16, et une position de dégagement.  The protective shell 16 comprises a bottom 17, a side wall 18 rising from the bottom 17, and two opposite handles 19a, 19b extending from the side wall 18 and outwardly of the protective shell 16. Each handle 19a, 19b of the protective shell 16 comprises a locking means 20a, 20b adapted to block one of the handles 15a, 15b of the heating vessel 2. The heating vessel 2, when positioned on the protective shell 16, is rotatable relative to the protective shell 16 between a locking position in which the handles 15a, 15b of the heating vessel 2 are blocked by the blocking means 20a, 20b, thus keeping the heating vessel 2 against the protective shell 16, and a release position.
Chaque moyen de blocage 20a, 20b est formé par une partie d'extrémité 24 de la poignée 19a, 19b de la coque protectrice 16. La partie d'extrémité 24 est recourbée vers l'intérieur de la coque protectrice 16 de façon à former une gorge 21a, 21b adaptée à permettre le coulissement d'une des poignées 15a, 15b du récipient de chauffe 2 entre la position de blocage dans laquelle la poignée 15a, 15b du récipient de chauffe 2 est bloquée dans la gorge 21a, 21b, et la position de dégagement dans laquelle la poignée 15a, 15b du récipient de chauffe 2 est hors de la gorge 21a, 21b.  Each locking means 20a, 20b is formed by an end portion 24 of the handle 19a, 19b of the protective shell 16. The end portion 24 is bent inwardly of the protective shell 16 so as to form a groove 21a, 21b adapted to allow the sliding of one of the handles 15a, 15b of the heating vessel 2 between the locking position in which the handle 15a, 15b of the heating vessel 2 is locked in the groove 21a, 21b, and the release position in which the handle 15a, 15b of the heating vessel 2 is out of the groove 21a, 21b.
Plus précisément, c'est une partie en périphérie de la poignée 15a, 15b qui coulisse dans la gorge 21a, 21b. L'épaisseur de la poignée 15a, 15b et la largeur de la gorge 21a, 21b sont adaptées pour que la partie en périphérie de la poignée 15a, 15b puisse coulisser dans la gorge 21a, 21b avec une certaine résistance. Lorsque la poignée 15a, 15b est en position de blocage, la partie en périphérie de la poignée 15a, 15b est serrée entre la face supérieure 23 et l'extrémité recourbée 24 de la coque protectrice 16. La gorge 21a, 21b présente une forme en arc de cercle. La poignée 15a, 15b comprend également un bord périphérique en arc de cercle. More specifically, it is a part at the periphery of the handle 15a, 15b which slides in the groove 21a, 21b. The thickness of the handle 15a, 15b and the width of the groove 21a, 21b are adapted so that the periphery portion of the handle 15a, 15b can slide in the groove 21a, 21b with a certain resistance. When the handle 15a, 15b is in the locked position, the periphery portion of the handle 15a, 15b is clamped between the upper face 23 and the curved end 24 of the protective shell 16. The groove 21a, 21b has a shape of arc. The handle 15a, 15b also comprises a peripheral edge in an arc.
Les récipients de chauffe 2 en inox de l'art antérieur sont fixés à une coque protectrice 16 par des vis. Cependant, ces moyens de fixation sont inadaptés à la fixation d'un récipient de chauffe 2 en verre. Les moyen de blocage 20a, 20b selon l'invention permettent donc de fixer le récipient de chauffe 2 en verre à la coque protectrice 16. De cette façon, l'utilisateur peut transporter l'appareil transportable 1 en toute sécurité sans risque de faire tomber le récipient de chauffe 2 en verre.  The stainless steel heating containers 2 of the prior art are fixed to a protective shell 16 by screws. However, these fixing means are unsuitable for fixing a glass heating vessel 2. The locking means 20a, 20b according to the invention thus make it possible to fix the glass heating vessel 2 to the protective shell 16. In this way, the user can transport the transportable apparatus 1 safely without risk of dropping the glass heating vessel 2.
L'appareil transportable 1 comprend un joint d'étanchéité disposé entre le récipient de chauffe 2 et la coque protectrice 16. Plus précisément, ce joint d'étanchéité est disposé entre la paroi inférieure du rebord périphérique supérieur 12 du récipient de chauffe 2 et le bord périphérique supérieur de la coque protectrice 16. Le joint d'étanchéité peut être un joint à lèvre ou un joint torique, par exemple.  The transportable apparatus 1 comprises a seal disposed between the heating vessel 2 and the protective shell 16. More specifically, this seal is disposed between the lower wall of the upper peripheral rim 12 of the heating vessel 2 and the upper peripheral edge of the protective shell 16. The seal may be a lip seal or an O-ring, for example.
De cette façon, l'espace entre le récipient de chauffe 2 et la coque protectrice 16 qui comprend des composants électriques est étanche, permettant ainsi le lavage et la manipulation de l'appareil transportable 1 sans risque d' électrocution ou de brûlure. Cet espace entre le récipient de chauffe 2 et la coque protectrice 16 est rempli d'air, formant ainsi une double paroi. Cet espace permet de fournir une isolation thermique. In this way, the space between the heating vessel 2 and the protective shell 16 which includes electrical components is watertight, thus allowing the washing and handling of the transportable apparatus 1 without the risk of electrocution or burns. This space between the heating vessel 2 and the protective shell 16 is filled with air, thus forming a double wall. This space provides thermal insulation.
La coque protectrice 16, qui est préférentiellement en polypropylène, est surmoulée par injection autour d'un connecteur étanche ayant pour fonction de permettre un passage étanche de conducteurs électriques entre l'extérieur et l'intérieur de la coque protectrice 16. Eventuellement, ce connecteur étanche peut posséder un voyant lumineux intégré signalant la mise sous tension de la piste chauffante.  The protective shell 16, which is preferably polypropylene, is overmolded by injection around a waterproof connector whose function is to allow a sealed passage of electrical conductors between the outside and the inside of the protective shell 16. Optionally, this connector Waterproof may have a built-in indicator light signaling the powering up of the heating track.
Selon un autre mode de réalisation de l'invention, l'appareil transportable 1 comprend un dispositif d'éclairage disposé entre la coque protectrice 16 et le récipient de chauffe 2. Le verre utilisé étant transparent ou semi-transparent, le dispositif d'éclairage permet d'éclairer les aliments dans le récipient de chauffe 2 pour les visualiser dans l'obscurité. Le dispositif d'éclairage permet également d'améliorer l'impact visuel. Il est possible d'utiliser des éclairages de couleurs différentes.  According to another embodiment of the invention, the transportable apparatus 1 comprises a lighting device disposed between the protective shell 16 and the heating vessel 2. The glass used being transparent or semi-transparent, the lighting device allows to illuminate the food in the heating vessel 2 for viewing in the dark. The lighting device also improves the visual impact. It is possible to use different colors of lighting.
La piste résistive sérigraphiée 7 s'étend sur la surface extérieure 13 du fond 3 du récipient de chauffe 2 en formant sensiblement une spire.  The screen printed resistive track 7 extends on the outer surface 13 of the bottom 3 of the heating vessel 2 substantially forming a turn.
Comme représenté sur la figure 4, le récipient de chauffe 2 comprend une seule piste résistive sérigraphiée 7. Les deux plots de connexion électrique 8a, 8b sont fixés sur le fond 3 du récipient de chauffe 2 et sont positionnés l'un à côté de l'autre, à proximité de la périphérie du fond 3 du récipient de chauffe 2. As shown in FIG. 4, the heating vessel 2 comprises a single screen printed resistive track 7. The two electrical connection pads 8a, 8b are fixed on the bottom 3 of the heating vessel 2 and are positioned next to each other, near the periphery of the bottom 3 of the heating vessel 2.
La piste résistive sérigraphiée 7 comprend une première spirale 25 partant d'un premier plot de connexion électrique 8a, et s' enroulant dans un premier sens de rotation autour du centre du fond 3, jusqu'à une boucle centrale 26 positionnée au voisinage du centre du fond 3.  The screen-printed resistive track 7 comprises a first spiral 25 starting from a first electrical connection pad 8a, and wound in a first direction of rotation around the center of the bottom 3, to a central loop 26 positioned in the vicinity of the center from the bottom 3.
La piste résistive sérigraphiée 7 comprend une deuxième spirale 27 partant de la boucle centrale 26, et s' enroulant dans un second sens de rotation opposé au premier sens de rotation autour du centre du fond 3, en longeant la première spirale 25, jusqu'à une boucle périphérique 28 positionnée à la périphérie du fond 3.  The screen-printed resistive track 7 comprises a second spiral 27 starting from the central loop 26, and wound in a second direction of rotation opposite to the first direction of rotation around the center of the bottom 3, along the first spiral 25, up to a peripheral loop 28 positioned at the periphery of the bottom 3.
La piste résistive sérigraphiée 7 comprend une troisième spirale 29 partant de la boucle périphérique 28, et s' enroulant selon le premier sens de rotation autour du centre du fond 3, en longeant la deuxième spirale 27, jusqu'au deuxième plot de connexion électrique 8b.  The screen-printed resistive track 7 comprises a third spiral 29 starting from the peripheral loop 28, and winding in the first direction of rotation around the center of the bottom 3, along the second spiral 27, to the second electrical connection pad 8b .

Claims

REVENDICATIONS
1. Récipient de chauffe (2) pour un appareil transportable (1) destiné au réchauffage d'aliments, ledit récipient de chauffe (2) comprenant un fond (3) et une paroi latérale (6) se dressant depuis le fond A heating vessel (2) for a transportable apparatus (1) for reheating food, said heating vessel (2) comprising a bottom (3) and a side wall (6) rising from the bottom
(3) , ledit fond (3) présentant une surface intérieure(3), said bottom (3) having an inner surface
(4) destinée à recevoir un aliment et une surface extérieure (5) sur laquelle est disposée au moins une piste résistive sérigraphiée (7), ladite piste résistive sérigraphiée (7) présentant deux extrémités reliées chacune à un plot de connexion électrique (8a, 8b) pour son alimentation électrique, caractérisé en ce que le récipient de chauffe (2) est entièrement en verre. (4) for receiving a foodstuff and an outer surface (5) on which at least one screen-printed resistive track (7) is arranged, said screen-printed resistive track (7) having two ends each connected to an electrical connection pad (8a, 8b) for its power supply, characterized in that the heating vessel (2) is entirely made of glass.
2. Récipient de chauffe (2) selon la revendication 1, caractérisé en ce que le récipient de chauffe (2) est en verre alimentaire du type boro-silicate ou fluosilicate ou vitro-céramique . 2. Heating vessel (2) according to claim 1, characterized in that the heating vessel (2) is borosilicate or fluosilicate or glass-ceramic type food glass.
3. Récipient de chauffe (2) selon la revendication 1 ou 2, caractérisé en ce qu'il comporte au moins deux compartiments (9a, 9b) séparés par une paroi de séparation (10) . 3. Heating vessel (2) according to claim 1 or 2, characterized in that it comprises at least two compartments (9a, 9b) separated by a partition wall (10).
4. Récipient de chauffe (2) selon la revendication 3, caractérisé en ce qu'au moins un des compartiments (9a, 9b) du récipient de chauffe (2) présente un fond (lia) sans piste résistive sérigraphiée (7), ledit compartiment formant un compartiment non chauffant (9a) . 4. Heating vessel (2) according to claim 3, characterized in that at least one of the compartments (9a, 9b) of the heating vessel (2) has a bottom (11a) without screen-printed resistive track (7), said compartment forming a non-heating compartment (9a).
5. Récipient de chauffe (2) selon la revendication 3, caractérisé en ce qu' il comprend une piste résistive sérigraphiée (7) par compartiment (9a, 9b) . 5. Heating vessel (2) according to claim 3, characterized in that it comprises a screen-printed resistive track (7) per compartment (9a, 9b).
6. Récipient de chauffe (2) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la piste résistive sérigraphiée (7) est composée d'un matériau polymère chargé de nickel. 6. Heating vessel (2) according to any one of claims 1 to 5, characterized in that the screen-printed resistive track (7) is composed of a nickel-filled polymer material.
7. Récipient de chauffe (2) selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il comprend un rebord périphérique supérieur (12), au niveau de sa partie supérieure, s' étendant depuis sa paroi latérale (6) et vers l'extérieur du récipient de chauffe (2), le rebord périphérique supérieur (12) présentant une surface inférieure (13') et une surface supérieure (13), laquelle est adaptée à supporter un couvercle amovible (16') . Heating vessel (2) according to one of Claims 1 to 6, characterized in that it comprises an upper peripheral flange (12) at its upper part extending from its side wall (6). ) and to the outside of the heating vessel (2), the upper peripheral flange (12) having a lower surface (13 ') and an upper surface (13), which is adapted to support a removable cover (16').
8. Récipient de chauffe (2) selon la revendication 7, caractérisé en ce que le rebord périphérique supérieur (12) comprend une bordure périphérique de centrage (14) pour centrer ledit couvercle amovible (16') par rapport au récipient de chauffe (2) , ladite bordure périphérique de centrage (14) faisant saillie sur la face supérieure (13) du rebord périphérique supérieur (12) . Heating vessel (2) according to claim 7, characterized in that the upper peripheral flange (12) comprises a peripheral circumferential edge (14) for centering said removable cover (16 ') with respect to the heating vessel (2). ), said circumferential centering edge (14) protruding from the upper face (13) of the upper peripheral flange (12).
9. Récipient de chauffe (2) selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il comporte au moins une poignée (15a, 15b) disposée à sa périphérie pour son transport, chaque poignée (15a, 15b) étant formée par le prolongement du rebord périphérique supérieur (12) . 9. Heating vessel (2) according to any one of claims 1 to 8, characterized in that it comprises at least one handle (15a, 15b) disposed at its periphery for transport, each handle (15a, 15b). being formed by the extension of the upper peripheral flange (12).
10. Récipient de chauffe (2) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le récipient de chauffe (2) est au moins localement dépoli, coloré ou opaque. 10. Heating vessel (2) according to any one of claims 1 to 9, characterized in that the heating vessel (2) is at least locally frosted, colored or opaque.
11. Appareil transportable (1), caractérisé en ce qu'il comprend un récipient de chauffe (2) tel que défini par l'une quelconque des revendications 1 à 10, ledit appareil transportable (1) comprenant un couvercle amovible (16') adapté pour fermer hermétiquement le récipient de chauffe (2), et une coque protectrice (16) destinée à supporter et protéger le récipient de chauffe (2), formant ainsi une double paroi. 11. Transportable apparatus (1), characterized in that it comprises a heating vessel (2) as defined by any one of claims 1 to 10, said transportable apparatus (1) comprising a removable cover (16 ') adapted to seal the heating vessel (2), and a protective shell (16) for supporting and protecting the heating vessel (2), thereby forming a double wall.
12. Appareil transportable (1) selon la revendication 11, caractérisé en ce que la coque protectrice (16) comprend un fond (17), une paroi latérale (18) se dressant depuis le fond (17), et deux poignées opposées (19a, 19b) s' étendant depuis le bord supérieur de la paroi latérale (18) et vers l'extérieur de la coque protectrice (16), chaque poignée (19a, 19b) de la coque protectrice (16) comprenant un moyen de blocage (20a, 20b) apte à bloquer une des poignées (15a, 15b) du récipient de chauffe (2), le récipient de chauffe (2), lorsqu'il est positionné sur la coque protectrice (16), étant mobile en rotation par rapport à la coque protectrice (16) entre une position de blocage dans laquelle les poignées (15a, 15b) du récipient de chauffe (2) sont bloquées par les moyens de blocage (20a, 20b) , maintenant ainsi le récipient de chauffe (2) contre la coque protectrice (16), et une position de dégagement . 12. transportable device (1) according to claim 11, characterized in that the protective shell (16) comprises a bottom (17), a side wall (18) rising from the bottom (17), and two opposite handles (19a , 19b) extending from the upper edge of the side wall (18) and outwardly of the protective shell (16), each handle (19a, 19b) of the protective shell (16) comprising a locking means ( 20a, 20b) adapted to block one of the handles (15a, 15b) of the heating vessel (2), the heating vessel (2), when positioned on the protective shell (16), being rotatable relative to the protective shell (16) between a locking position in which the handles (15a, 15b) of the heating container (2) are locked by the blocking means (20a, 20b), thus holding the heating vessel (2) against the protective shell (16), and a disengagement position.
13. Appareil transportable (1) selon la revendication 12, caractérisé en ce que chaque moyen de blocage (20a, 20b) est formé par une partie d'extrémité (24) de la poignée (19a, 19b) de la coque protectrice (16), la partie d'extrémité (24) étant recourbée vers l'intérieur de la coque protectrice (16) de façon à former une gorge (21a, 21b) permettant le coulissement d'une des poignées (15a, 15b) du récipient de chauffe (2) entre la position de blocage dans laquelle la poignée (15a, 15b) du récipient de chauffe (2) est bloquée dans la gorge (21a, 21b) , et la position de dégagement dans laquelle la poignée (15a, 15b) du récipient de chauffe (2) est hors de la gorge (21a, 21b) . 13. Transportable apparatus (1) according to claim 12, characterized in that each locking means (20a, 20b) is formed by an end portion (24) of the handle (19a, 19b) of the protective shell (16). ), the end portion (24) being curved inwardly of the protective shell (16) so as to form a groove (21a, 21b) for sliding one of the handles (15a, 15b) of the container heating (2) between the locking position in which the handle (15a, 15b) of the heating vessel (2) is locked in the groove (21a, 21b), and the disengagement position in which the handle (15a, 15b) of the heating container (2) is out of the groove (21a, 21b).
14. Appareil transportable (1) selon l'une quelconque des revendications 11 à 13, caractérisé en ce qu'il comprend un dispositif d'éclairage disposé entre la coque protectrice (16) et le récipient de chauffe (2) . 14. transportable device (1) according to any one of claims 11 to 13, characterized in that it comprises a lighting device disposed between the protective shell (16) and the heating vessel (2).
EP12728661.5A 2011-05-13 2012-05-11 Heating container for heating food and transportable device including such a heating container Withdrawn EP2706893A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1154159A FR2974993B1 (en) 2011-05-13 2011-05-13 HEATING CONTAINER FOR HEATING FOODS AND TRANSPORTABLE APPARATUS COMPRISING SUCH A HEATING CONTAINER
PCT/FR2012/051050 WO2012156628A1 (en) 2011-05-13 2012-05-11 Heating container for heating food and transportable device including such a heating container

Publications (1)

Publication Number Publication Date
EP2706893A1 true EP2706893A1 (en) 2014-03-19

Family

ID=46321086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12728661.5A Withdrawn EP2706893A1 (en) 2011-05-13 2012-05-11 Heating container for heating food and transportable device including such a heating container

Country Status (4)

Country Link
EP (1) EP2706893A1 (en)
CN (1) CN103619224B (en)
FR (1) FR2974993B1 (en)
WO (1) WO2012156628A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3010293B1 (en) * 2013-09-06 2015-09-25 Seb Sa CLAMP OF A COOKING CONTAINER HAVING A SUPPORT PROVIDED WITH AN ELECTRICAL DEVICE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6144016A (en) * 1999-06-21 2000-11-07 Garvin; Tomika Heating element lunch box
FR2871650B1 (en) 2004-06-11 2006-09-22 Seb Sa HEATING ELEMENT, MANUFACTURING METHOD THEREFOR, ARTICLE HAVING SUCH ELEMENT AND METHOD OF MANUFACTURING THE SAME
FR2878723B1 (en) * 2004-12-06 2009-05-01 Seb Sa TRANSPORTABLE APPARATUS FOR HEATING FOOD
US8575520B2 (en) * 2007-03-15 2013-11-05 Daniel Garr Heating systems for heating items in heating compartments
FR2918865B1 (en) * 2007-07-20 2009-10-09 Seb Sa COOKING MACHINE HAVING A FILLING ORGAN FIXED ON THE TANK
DE202009017833U1 (en) * 2009-09-21 2010-06-10 Hidde, Axel R., Dr. Ing. Cooking vessel system with thermator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012156628A1 *

Also Published As

Publication number Publication date
CN103619224B (en) 2016-11-09
WO2012156628A1 (en) 2012-11-22
CN103619224A (en) 2014-03-05
FR2974993B1 (en) 2014-04-11
FR2974993A1 (en) 2012-11-16

Similar Documents

Publication Publication Date Title
EP0717946B1 (en) Method for reheating previously prepared convenience food, transport and reheating cart, and tray for convenience food as well as tray for previously prepared convenience food
EP0895772A1 (en) Heating device for a feeding bottle with a metallic bottom
EP2731474B1 (en) Kitchenware item comprising a heated side wall, and method
FR3012008A1 (en) THICK-LAYER HEATING ELEMENT AND KITCHEN EQUIPMENT HAVING SUCH A HEATING ELEMENT
WO2018037174A1 (en) Improvement to thermometer cooking probes
EP2040559B1 (en) Electrical appliance for making culinary preparations in separate portions
FR2744589A1 (en) INDUCTOR FOR A COOKING PLATE
FR2568438A1 (en) BOILER FOR ELECTRIC HOUSEHOLD APPLIANCE
EP2706890B1 (en) Heating container including multiple screen-printed resistive tracks, a transportable device including such a heating container and method for the production of said heating container
EP2706893A1 (en) Heating container for heating food and transportable device including such a heating container
FR2942385A1 (en) TOASTER.
EP1824366B1 (en) Transportable food-heating apparatus
FR2983564A1 (en) HEATING ELEMENT
EP0657132B1 (en) Construction and assembly of elements forming a meat grilling device having a plastic housing
EP2874524A1 (en) Culinary item, assembly and system with detection of volatile compounds, and method for producing the culinary item
EP2230976B2 (en) Meal tray comprising distinct heating areas and transport trolley adapted for heating such meal trays
FR2752504A1 (en) Heater base for metal-bottomed feeding bottle
EP1827186B1 (en) Floating reflector for electrical barbecue
FR3083974A1 (en) FLAT BELL, FOR CARRYING AND / OR HOLDING AT THE CONSUMPTION TEMPERATURE OF FOODS DISHWASHER
FR3089101A1 (en) Household appliance for cooking and heating food products
FR2713465A1 (en) NTC sensor on flexible support for meat grill.
FR3000889A1 (en) CONTAINER FOR RECEIVING FOOD PRODUCTS
FR3110221A1 (en) HEATING DEVICE WITH AT LEAST ONE POCKET OF LIQUID INTENDED TO HEAT A LIVING BEING OR AN OBJECT, AND ASSEMBLY INCLUDING SUCH A DEVICE
EP0919120A1 (en) Intermediate aquarium support sheet combining the functions of heating and of absorbing mechanical stresses
BE566056A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20131105

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SEB S.A.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20171201