FR2786081A1 - Self-heating food tray for use e.g. in schools or hospitals has heater to raise temperature of food and then maintain it at set level - Google Patents
Self-heating food tray for use e.g. in schools or hospitals has heater to raise temperature of food and then maintain it at set level Download PDFInfo
- Publication number
- FR2786081A1 FR2786081A1 FR9814865A FR9814865A FR2786081A1 FR 2786081 A1 FR2786081 A1 FR 2786081A1 FR 9814865 A FR9814865 A FR 9814865A FR 9814865 A FR9814865 A FR 9814865A FR 2786081 A1 FR2786081 A1 FR 2786081A1
- Authority
- FR
- France
- Prior art keywords
- heating
- temperature
- tray
- food
- meal tray
- 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.)
- Granted
Links
- 235000013305 food Nutrition 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 title claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 230000000007 visual effect Effects 0.000 claims abstract description 4
- 235000012054 meals Nutrition 0.000 claims description 18
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 230000001960 triggered Effects 0.000 claims 2
- 210000003491 Skin Anatomy 0.000 claims 1
- 230000001143 conditioned Effects 0.000 claims 1
- 238000003303 reheating Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 210000003284 Horns Anatomy 0.000 description 1
- 206010027175 Memory impairment Diseases 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000001580 bacterial Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000004059 degradation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000051 modifying Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B23/00—Arrangements producing acoustic signals at preselected times
-
- 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
- A47J39/00—Heat-insulated warming chambers; Cupboards with heating arrangements for warming kitchen utensils
- A47J39/006—Heat-insulated warming chambers; Cupboards with heating arrangements for warming kitchen utensils for either storing and preparing or for preparing food on serving trays, e.g. heating, thawing, preserving
Abstract
Description
Plateau-repas avec dispositif électrique de remise ou de
maintenance en température d'aliments cuisinés
La présente invention se rapporte à la distribution en chaîne, chaude ou froide, de repas unitaires dans les hôpitaux, écoles et en particulier aux services à domicile de personnes âgées ou handicapées
En chaîne chaude on trouve des plateaux-repas isothermiques.Meal tray with electric delivery or
temperature maintenance of cooked food
The present invention relates to the chain distribution, hot or cold, of unit meals in hospitals, schools and in particular in home services for the elderly or disabled
In the hot chain there are isothermal meal trays.
Des éléments de chauffage sont déjà venu se greffer à des éléments de transport isothermique, mais il s'agit de simple résistance électrique que l'on branche au réseau soit directement soit par des systèmesde contacts spéciaux. L'état de la technique connu ne comprend pas de système de sécurité contre toute surchauffe du dispositif, destructive de l'élément.Heating elements have already been added to isothermal transport elements, but it is a simple electrical resistance that is connected to the network either directly or by special contact systems. The known state of the art does not include a security system against any overheating of the device, which destroys the element.
La présente invention a pour objet de fournir une solution spécifiquement adaptée à la remise en température de repas unitaires livrés ou stockés en chaîne froide et au maintien en température, en attendant leur consommation, de repas livrés en chaîne chaude. Elle offre en plus une sécurité d'emploi spécialement adaptée quand l'usager est une personne âgée ou handicapée. Selon l'invention le dispositif est dans l'impossibilité de brûler les aliments quelle que soit la manoeuvre de l'utilisateur ; les oublis, très fréquents chez ce type de clientèle, n'ont aucune incidence à moyen terme, le dispositif se mettant automatiquement en repos après un laps de temps préréglé. The object of the present invention is to provide a solution specifically adapted to the reheating of unit meals delivered or stored in the cold chain and to maintaining the temperature, pending their consumption, of meals delivered in the hot chain. It also offers job security specially adapted when the user is an elderly or disabled person. According to the invention the device is unable to burn food regardless of the operation of the user; forgetfulness, very frequent in this type of clientele, has no effect in the medium term, the device automatically going to rest after a preset period of time.
De plus un signal sonore et/ou visuel, par exemple lampe ou affichage, avertit le bénéficiaire qu'il doit agir.In addition, an audible and / or visual signal, for example a lamp or display, warns the beneficiary that he must act.
Si on applique la loi actuelle, la remise en température du plat cuisiné après une livraison en chaîne froide, ne doit pas durer plus d'une heure pour obtenir 65 degrés centigrades à coeur, ensuite cette température ne doit pas descendre en dessous de cette limite, quelle que soit la quantité d'aliments contenue dans le plateau-repas. If we apply the current law, the reheating of the cooked dish after a cold chain delivery, must not last more than an hour to obtain 65 degrees centigrade at heart, then this temperature must not drop below this limit , regardless of the amount of food in the meal tray.
On a donc des données et des paramètres très variables qui font que schématiquement le dispositif doit fournir un maximum de calories au départ sans pour cela dépasser une certaine température qui risquerait de brûler les aliments. Il ne doit en outre pas dépasser la température de changement de phase de la matière dont est fait la barquette (point VICA) ou mettre en péril l'environnement de l'utilisateur. Ensuite l'apport de calories doit tre modulé dans des limites très larges qui vont du chauffage maxi à aucun chauffage, dans le seul but de maintenir à plus de 65 degrés centigrades les aliments en évitant une dégradation due à une température trop haute Ce but est atteint par le fait, conformément à l'invention, que la quantité de calories fournie est dépendante de la température (mesurée par un capteur) d'une zone située entre le corps de chauffe proprement dit et l'enveloppe des aliments. Cette zone est matérialisée par une plaque très bonne conductrice thermique par exemple une plaque de cuivre chromée pour éviter l'oxydation La sécurité dans cette zone peut tre augmentée par l'emploi d'un deuxième capteur et/ou d'un fusible thermique
La présente invention sera mieux comprise en référence à la description d'un exemple, non limitatif, d'une des formes de réalisation de l'objet de l'invention.There are therefore very variable data and parameters which mean that schematically the device must provide a maximum of calories at the start without thereby exceeding a certain temperature which would risk burning the food. It must also not exceed the phase change temperature of the material of which the tray is made (VICA point) or endanger the user's environment. Then the intake of calories must be modulated within very wide limits which range from maximum heating to no heating, with the sole aim of keeping food above 65 degrees centigrade by avoiding degradation due to too high a temperature. achieved by the fact, according to the invention, that the quantity of calories supplied is dependent on the temperature (measured by a sensor) of an area situated between the heating body proper and the food envelope. This zone is materialized by a very good thermal conductor plate, for example a chromed copper plate to avoid oxidation. Safety in this zone can be increased by the use of a second sensor and / or a thermal fuse.
The present invention will be better understood with reference to the description of a non-limiting example of one of the embodiments of the subject of the invention.
La figure unique du dessin annexé montre schématiquement les éléments séparés constituant le dispositif.The single figure of the appended drawing schematically shows the separate elements constituting the device.
Le dispositif comprend une base thermo-isolante 1 moulée en polyuréthane, ayant pour résultat une couche superficielle, d'aspect lisse, dense et dur, qui assure un minimum d'accrochage bactérien et une structure intérieure alvéolaire, de densité et de dureté inférieures, mais assurant une meilleure isolation. Les épaisseurs entourant les compartiments sont suffisantes pour éviter un maximum de passage calorifique. Cette base comporte un ou plusieurs compartiments séparés de l'extérieur ou entre-eux par des cloisons tronconiques 2, de hauteur suffisante pour que les aliments ne dépassent pas la surface supérieure des cavités. Il est prévu de conditionner les aliments dans une feuille 3 préformée, de préférence en matière synthétique mise en forme par thermoformage à partir d'une feuille de qualité alimentaire, par exemple du polystyrène choc, qui épouse exactement la surface supérieure de la base 1. Un film 4 est operculé sur la feuille 3 afin de garantir l'hygiène et l'étanchéité entre les compartiments et vis-à-vis de l'extérieur. Une plaque chauffante 5 en cuivre chromé comportant des points d'accrochage, est surmoulée dans la base 1. Cette plaque 5 est alimentée en calories par des fils haute résistance 6 reliés électriquement à un boîtier de commande 7 et noyés dans une matière 8 isolante électriquement mais thermiquement conductrice. Un capteur de température 9 relié au boîtier 7 informe le système de la température de la plaque 5. Le boîtier 7 comporte les commandes manuelles suivantes : une commande 10 qui enclenche le circuit de chauffage, une commande 11 qui enclenche le circuit de maintien, un bouton d'arrt 12 qui déclenche tous les cycles y compris les informations sonores ou visuelles.The device comprises a thermo-insulating base 1 molded in polyurethane, resulting in a surface layer, of smooth, dense and hard appearance, which ensures a minimum of bacterial attachment and an alveolar internal structure, of lower density and hardness, but ensuring better insulation. The thicknesses surrounding the compartments are sufficient to avoid maximum heat transfer. This base comprises one or more compartments separated from the outside or between them by frustoconical partitions 2, of sufficient height so that the food does not exceed the upper surface of the cavities. It is planned to package the food in a preformed sheet 3, preferably in plastic material formed by thermoforming from a food grade sheet, for example impact polystyrene, which exactly matches the upper surface of the base 1. A film 4 is sealed on the sheet 3 in order to guarantee hygiene and sealing between the compartments and vis-à-vis the outside. A heating plate 5 in chromed copper having attachment points, is overmolded in the base 1. This plate 5 is supplied with calories by high resistance wires 6 electrically connected to a control box 7 and embedded in an electrically insulating material 8 but thermally conductive. A temperature sensor 9 connected to the housing 7 informs the system of the temperature of the plate 5. The housing 7 comprises the following manual controls: a control 10 which activates the heating circuit, a control 11 which activates the holding circuit, a stop button 12 which initiates all cycles including audio or visual information.
Un système régule la température de la plaque 5 sur la base : des informations du capteur 9, d'une température interne de référence préprogrammée, de la vitesse d'approche de cette limite et/ou de l'inertie du corps de chauffe. Un fusible thermique monté en série et noyé dans la masse 8 assure en dernière extrémité toute surchauffe qui pourrait mettre en péril l'environnement du dispositif. Une minuterie autorise le chauffage de remise en température pendant
une durée prédéterminée mais au maximum une heure. Une
deuxième minuterie autorise le chauffage de maintien pendant une
durée elle aussi prédéterminée. Un avertisseur sonore 13 informe
l'utilisateur que la période de remise en température ou de maintien
est terminée.A system regulates the temperature of the plate 5 on the basis of: information from the sensor 9, a pre-programmed internal reference temperature, the speed of approach of this limit and / or the inertia of the heating body. A thermal fuse mounted in series and embedded in the mass 8 ensures at the last end any overheating which could endanger the environment of the device. A timer allows reheating heating for
a predetermined duration but at most one hour. A
second timer allows the holding heater for one
duration also predetermined. A horn 13 informs
the user that the reheating or holding period
is finished.
Les commandes manuelles 10 et 11 peuvent tre du type lampe témoin. La base comporte des pieds 14 qui l'empche de glisser sur la surface d'appui. Le boîtier 7 dispose d'une fiche mâle 2 phases + terre où une rallonge électrique normalisée peut tre raccordée. Le compartiment 15 reste froid car isolé thermiquement par les parois 2. The manual controls 10 and 11 can be of the indicator lamp type. The base has feet 14 which prevent it from sliding on the bearing surface. The box 7 has a 2 phase + earth male plug where a standard electrical extension can be connected. The compartment 15 remains cold because it is thermally insulated by the walls 2.
Un couvercle 16 vient isoler thermiquement la surface supérieure des compartiments. Une horloge pilotée, contenue dans le boîtier 7, informe, à l'aide d'un affichage 17 et en fonction des différents jours de la semaine, l'utilisateur d'effectuer certaines opérations à certaines heures, par exemple : réchauffer un repas, prendre un médicament. A cover 16 thermally insulates the upper surface of the compartments. A controlled clock, contained in the housing 7, informs, using a display 17 and according to the different days of the week, the user to carry out certain operations at certain times, for example: reheating a meal, Take medication.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9814865A FR2786081B1 (en) | 1998-11-20 | 1998-11-20 | MEAL TRAY WITH ELECTRICAL DEVICE FOR TEMPERATURE RESET OR MAINTENANCE OF KITCHEN FOODS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9814865A FR2786081B1 (en) | 1998-11-20 | 1998-11-20 | MEAL TRAY WITH ELECTRICAL DEVICE FOR TEMPERATURE RESET OR MAINTENANCE OF KITCHEN FOODS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2786081A1 true FR2786081A1 (en) | 2000-05-26 |
| FR2786081B1 FR2786081B1 (en) | 2001-01-19 |
Family
ID=9533190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9814865A Expired - Fee Related FR2786081B1 (en) | 1998-11-20 | 1998-11-20 | MEAL TRAY WITH ELECTRICAL DEVICE FOR TEMPERATURE RESET OR MAINTENANCE OF KITCHEN FOODS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2786081B1 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2990286A (en) * | 1958-05-07 | 1961-06-27 | Houghton W Clarke | Method of storing prepared foods |
| DE1931505A1 (en) * | 1968-06-20 | 1970-01-02 | Minnesota Mining & Mfg | Method and device for preparing and storing food |
| US3725645A (en) * | 1968-12-04 | 1973-04-03 | Shevlin T | Casserole for storing and cooking foodstuffs |
| FR2207676A1 (en) * | 1972-11-28 | 1974-06-21 | Grandi Rene | |
| FR2375853A1 (en) * | 1976-12-31 | 1978-07-28 | Filippis Modeste De | Heating or cooling cabinet for food - has trays made of top and bottom plates welded together with insulating foam between them |
| FR2424196A1 (en) * | 1978-04-26 | 1979-11-23 | Guex Andre | MULTI-COMPARTMENT CONTAINER |
| JPS56114019A (en) * | 1980-02-13 | 1981-09-08 | Matsushita Electric Ind Co Ltd | Temperature controlling circuit |
| DE3125842A1 (en) * | 1981-07-01 | 1983-01-27 | Klaus 6072 Dreieich Rehahn | Cassette for receiving food |
| CN1064605A (en) * | 1991-03-12 | 1992-09-23 | 陈玉山 | Universal automatic controller for domestic electrical equipments |
| DE9420946U1 (en) * | 1994-02-22 | 1995-05-24 | Monetti Spa | Keep-warm containers for warm meals or the like, in particular for the purposes of community catering |
-
1998
- 1998-11-20 FR FR9814865A patent/FR2786081B1/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2990286A (en) * | 1958-05-07 | 1961-06-27 | Houghton W Clarke | Method of storing prepared foods |
| DE1931505A1 (en) * | 1968-06-20 | 1970-01-02 | Minnesota Mining & Mfg | Method and device for preparing and storing food |
| US3725645A (en) * | 1968-12-04 | 1973-04-03 | Shevlin T | Casserole for storing and cooking foodstuffs |
| FR2207676A1 (en) * | 1972-11-28 | 1974-06-21 | Grandi Rene | |
| FR2375853A1 (en) * | 1976-12-31 | 1978-07-28 | Filippis Modeste De | Heating or cooling cabinet for food - has trays made of top and bottom plates welded together with insulating foam between them |
| FR2424196A1 (en) * | 1978-04-26 | 1979-11-23 | Guex Andre | MULTI-COMPARTMENT CONTAINER |
| JPS56114019A (en) * | 1980-02-13 | 1981-09-08 | Matsushita Electric Ind Co Ltd | Temperature controlling circuit |
| DE3125842A1 (en) * | 1981-07-01 | 1983-01-27 | Klaus 6072 Dreieich Rehahn | Cassette for receiving food |
| CN1064605A (en) * | 1991-03-12 | 1992-09-23 | 陈玉山 | Universal automatic controller for domestic electrical equipments |
| DE9420946U1 (en) * | 1994-02-22 | 1995-05-24 | Monetti Spa | Keep-warm containers for warm meals or the like, in particular for the purposes of community catering |
Non-Patent Citations (2)
| Title |
|---|
| DATABASE EPODOC EPO; 23 September 1992 (1992-09-23), CHEN YUSAN: "Universal Automatic Controller for Domestic Electical Equipments", XP002115688 * |
| PATENT ABSTRACTS OF JAPAN vol. 005, no. 185 (P - 091) 25 November 1981 (1981-11-25) * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2786081B1 (en) | 2001-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |