WO2001010278A1 - Heat maintenance device - Google Patents
Heat maintenance device Download PDFInfo
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- WO2001010278A1 WO2001010278A1 PCT/EP2000/007056 EP0007056W WO0110278A1 WO 2001010278 A1 WO2001010278 A1 WO 2001010278A1 EP 0007056 W EP0007056 W EP 0007056W WO 0110278 A1 WO0110278 A1 WO 0110278A1
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- WIPO (PCT)
- Prior art keywords
- arrangement according
- heat
- substrate
- heating element
- emitting material
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
- B65D81/3813—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container
- B65D81/3816—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container formed of foam material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2585/00—Containers, packaging elements or packages specially adapted for particular articles or materials
- B65D2585/30—Containers, packaging elements or packages specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
- B65D2585/36—Containers, packaging elements or packages specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for biscuits or other bakery products
- B65D2585/363—Containers, packaging elements or packages specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for biscuits or other bakery products specific products
- B65D2585/366—Pizza
Definitions
- the invention relates to an arrangement for keeping a substrate warm, which emits water vapor at least in the heated state.
- the object of the invention is to provide an arrangement of the type mentioned at the outset with which the substrate can be kept warm with simple and inexpensive measures and in which no special containers are required.
- the invention is based primarily on the knowledge that on the one hand many substrates release water vapor in the heated state and that on the other hand On the one hand, certain materials sorb water vapor exothermically.
- the arrangement according to the invention therefore provides that the substrate which emits water vapor at least in the heated state is arranged in a common air space with a heating element which contains a material which emits heat while absorbing water.
- the air space is expediently thermally insulated from the surroundings, for example by being formed by the interior of an insulated container for receiving the substrate and the heating element.
- the heat transfer from the heating element to the substrate preferably takes place either by convection or heat conduction via the air space or via a heat-conducting contact surface between the substrate and the heating element.
- the heat-emitting material should preferably have a heat of adsorption released of at least 2000 kJ, in particular about 4000 kJ per kg of water taken up and a specific heat of less than 50 kJ / kg, preferably less than 10 kJ / kg.
- the heat-emitting material is preferably porous with an average pore size of 0.2 to 4 nm and can be a granulate or a powder with an average grain diameter of 0.1 to 4 mm. These properties of the heat-emitting material are met in particular by zeolites.
- the heating element expediently has a bag containing the material and permeable to air and water vapor, which is preferably designed as a textile bag.
- the heating element can be used cyclically, ie it is used in the desorbed state and gives off heat while absorbing water. As soon as the heating element is partially or completely saturated with water, the heating element can be regenerated by heating in a comparatively dry atmosphere.
- the temperature required for regeneration can be between less than 100 ° C to about 400 ° C.
- the textile material of the bag and its suture material should consist of a material that is temperature-resistant at least up to 200 ° C., preferably up to 400 ° C.
- the heat-emitting material is embedded directly in a dimensionally stable support body.
- a dimensionally stable support body This can consist, for example, of a fibrous material which is permeable to water vapor, be plate-shaped and serve as an underlay plate for the substrate to be kept warm.
- the support body can also be integrated directly into the insulating container, wherein the insulating container can be a cardboard folding box.
- Cardboard boxes of this type generally have a layer structure with internal cavities.
- the heat-emitting material can then be arranged in the cavities as granules or powder during the manufacture of the cardboard box.
- a type of impregnation of a support body for example, as a paper that can be torn off from a supply roll, is also possible, provided that a sufficient amount of heat-emitting material can be absorbed by it.
- the arrangement according to the invention is particularly effective when all the water vapor emitted by the substrate can also be absorbed by the heating element.
- the insulating container can therefore be closed in a vapor-tight manner. This ensures that the water vapor emitted by the substrate is not is lost to the environment, but is predominantly adsorbed by the heating element, which means that it can emit a higher amount of heat.
- the arrangement according to the invention is particularly suitable for keeping dishes warm. It is particularly advantageous that the food is not only kept warm by the heating element, but that at the same time the often unwanted water vapor emitted by the food is adsorbed by the heating element.
- dishes such as pizzas, French fries and the like, which are delivered to the consumer as part of a so-called delivery service, often suffer a loss in quality on the transport route due to condensing water vapor.
- softening is mainly responsible for a considerable reduction in enjoyment for the consumer.
- the warming arrangement according to the invention in keeping warm and dry water-vapor-releasing dishes, in particular pizzas, during transport in an air-tight insulating container.
- the invention is explained in more detail below with reference to an exemplary embodiment shown schematically in the drawing.
- the single figure shows a cross section through a transport container with two pizzas arranged therein and a heating element.
- the arrangement shown in the figure for keeping food warm essentially consists of a heat-insulated transport container 10 which can be closed in a vapor-tight manner by a cover 12.
- the container 10 and the lid 12 consist, for example, of a foamed plastic material.
- the interior of the container 10 is dimensioned such that a plurality of pizzas 16 packed in cardboard boxes 14 can be picked up and stacked on top of one another by the container.
- the cardboard boxes 14 have a plurality of ventilation openings 18 on their long sides, through which water vapor 20 emitted by the warm pizzas 16 can escape into the air space 22 of the container 10.
- the water vapor 20 is adsorbed by the heating element 24, whereby this releases heat of adsorption 26 which heats the air space 22 and thus the pizzas 16.
- the water vapor escaping the pizzas 16 is bound at the same time so that they cannot soften.
- the heating element 24 consists of a bag 28, which consists of an air and vapor permeable textile material and which is filled with a granulated zeolite 30.
- the textile structure of the bag 28 is designed in such a way that air and water vapor can pass through, but that the zeolite granules 30 are retained.
- the zeolite 30 has a heat of adsorption of about 3700 kJ per kg of water absorbed with a specific heat of only about 0.9 kJ / kg, so that a high efficiency for the heating element is achieved, since almost all of the heat of adsorption for heating the air space 22nd and so the pizza 16 is available.
- Another advantage of the zeolite is that it is food-neutral and therefore no special safety measures need to be taken when arranging the heating element 24 in the container 10.
- the textile material of the bag 28 including the seams is temperature resistant up to about 400 ° C.
- the heating element 24 can be regenerated in a simple manner, for example, by heating it in a pizza oven or a microwave oven to desorb the water taken up by the zeolite 30.
- the invention relates to an arrangement for keeping a substrate warm, which emits water vapor at least in the heated state.
- the substrate 16 is arranged in a common air space 22 with a heating element 24 which contains a material 30 which emits heat while absorbing water.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cookers (AREA)
- Packages (AREA)
- Finger-Pressure Massage (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
WarmhalteanordnungWarming arrangement
Beschreibungdescription
Die Erfindung betrifft eine Anordnung zum Warmhalten eines Substrats, das zumindest im erwärmten Zustand Wasserdampf abgibt.The invention relates to an arrangement for keeping a substrate warm, which emits water vapor at least in the heated state.
Bei bestimmten Gegenständen, insbesondere auch bei Speisen, besteht oftmals das Bedürfnis, diese nach einer Erwärmung für eine begrenzte Zeit auf einem erhöhten Temperaturniveau zu halten, so z.B. zu Transportzwek- ken. Zu diesem Zweck ist es bereits bekannt, die erwärmten Gegenstände in einem isolierten Behälter aufzubewahren, der gegebenenfalls zusätzlich mit einer Fremdheizung versehen sein kann. Als Fremdheizungen werden bisher beispielsweise elektrische Heizungen oder Latentwärmespeicher eingesetzt. Ein Nachteil der Verwendung derartiger Fremdheizungen besteht darin, daß diese in speziell dafür konstruierte Behälter integriert werden müssen und zudem recht kostspielig sind.With certain objects, in particular also with food, there is often the need to keep them at an elevated temperature level for a limited time after heating, e.g. for transport purposes. For this purpose, it is already known to store the heated objects in an insulated container, which can optionally also be provided with external heating. For example, electric heaters or latent heat storage have been used as external heaters. A disadvantage of the use of such external heaters is that they have to be integrated into specially designed containers and are also quite expensive.
Ausgehend hiervon besteht die Aufgabe der Erfindung darin, eine Anord- nung der eingangs genannten Art bereitzustellen, mit der ein Warmhalten des Substrats mit einfachen und kostengünstigen Maßnahmen realisiert werden kann und bei der keine speziellen Behälter erforderlich sind.Proceeding from this, the object of the invention is to provide an arrangement of the type mentioned at the outset with which the substrate can be kept warm with simple and inexpensive measures and in which no special containers are required.
Zur Lösung dieser Aufgabe wird die im Patentanspruch 1 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen. Bevorzugte Verwendungen der erfindungsgemäßen Anordnung sind in den Ansprüchen 21 und 22 angegeben.To achieve this object, the combination of features specified in claim 1 is proposed. Advantageous refinements and developments of the invention result from the dependent claims. Preferred uses of the arrangement according to the invention are specified in claims 21 and 22.
Die Erfindung geht vor allem von der Erkenntnis aus, daß einerseits viele Substrate im erwärmten Zustand Wasserdampf abgeben und daß anderer- seits gewisse Materialien Wasserdampf exotherm sorbieren. Die erfindungsgemäße Anordnung sieht daher vor, daß das zumindest im erwärmten Zustand Wasserdampf abgebende Substrat in einem gemeinsamen Luftraum mit einem Heizelement angeordnet ist, das ein unter Wasseraufnahme wär- meabgebendes Material enthält. Zweckmäßig ist der Luftraum dabei gegenüber der Umgebung wärmeisoliert, indem er beispielsweise durch den Innenraum eines Isolierbehälters zur Aufnahme des Substrats und des Heizelements gebildet ist. Die Wärmeübertragung von dem Heizelement auf das Substrat erfolgt dabei vorzugsweise entweder durch Konvektion oder Wär- meleitung über den Luftraum oder über eine wärmeleitende Kontaktfläche zwischen Substrat und Heizelement.The invention is based primarily on the knowledge that on the one hand many substrates release water vapor in the heated state and that on the other hand On the one hand, certain materials sorb water vapor exothermically. The arrangement according to the invention therefore provides that the substrate which emits water vapor at least in the heated state is arranged in a common air space with a heating element which contains a material which emits heat while absorbing water. The air space is expediently thermally insulated from the surroundings, for example by being formed by the interior of an insulated container for receiving the substrate and the heating element. The heat transfer from the heating element to the substrate preferably takes place either by convection or heat conduction via the air space or via a heat-conducting contact surface between the substrate and the heating element.
Von den verschiedenen unter Wasseraufnahme wärmeabgebenden Materialien wird zweckmäßig ein solches verwendet, das zum einen bei Wasserauf- nähme eine möglichst große Wärmemenge freigibt und zum anderen selbst eine möglichst geringe spezifische Wärme aufweist, so daß ein möglichst hoher Anteil der erzeugten Wärme als Nutzwärme zur Verfügung steht. Vorzugsweise sollte das wärmeabgebende Material eine freiwerdende Adsorptionswärme von mindestens 2000 kJ, insbesondere etwa 4000 kJ je kg auf- genommenen Wassers und eine spezifische Wärme von weniger als 50 kJ/kg, vorzugsweise weniger als 10 kJ/kg aufweisen. Das wärmeabgebende Material ist vorzugsweise porös mit einer mittleren Porengröße von 0,2 bis 4 nm und kann ein Granulat oder ein Pulver mit einem mittleren Korndurchmesser von 0,1 bis 4 mm sein. Diese genannten Eigenschaften des wärme- abgebenden Materials werden insbesondere von Zeolithen erfüllt.Of the various materials that give off heat while absorbing water, one is expediently used which, on the one hand, releases the greatest possible amount of heat when absorbing water and, on the other hand, has as low a specific heat as possible, so that the greatest possible proportion of the heat generated is available as useful heat , The heat-emitting material should preferably have a heat of adsorption released of at least 2000 kJ, in particular about 4000 kJ per kg of water taken up and a specific heat of less than 50 kJ / kg, preferably less than 10 kJ / kg. The heat-emitting material is preferably porous with an average pore size of 0.2 to 4 nm and can be a granulate or a powder with an average grain diameter of 0.1 to 4 mm. These properties of the heat-emitting material are met in particular by zeolites.
Soweit das wärmeabgebende Material in Form eines Granulats oder Pulvers verwendet wird, weist das Heizelement zweckmäßig einen das Material enthaltenden, für Luft und Wasserdampf durchlässigen Beutel auf, der bevor- zugt als Textilbeutel ausgebildet ist. Das Heizelement kann zyklisch verwendet werden, d.h. es wird im desor- bierten Zustand eingesetzt und gibt dabei unter Wasseraufnahme Wärme ab. Sobald ein teilweiser oder vollständiger Sättigungszustand des Heizelements mit Wasser erreicht ist, läßt sich das Heizelement durch Erhitzen in vergleichsweise trockener Atmosphäre regenerieren. Die für die Regeneration erforderliche Temperatur kann dabei zwischen weniger als 100 °C bis etwa 400 °C betragen. Dementsprechend sollte das Textilmaterial des Beutels sowie dessen Nahtmaterial aus einem mindestens bis 200 °C, vorzugsweise bis 400 °C temperaturbeständigen Material bestehen.If the heat-emitting material is used in the form of granules or powder, the heating element expediently has a bag containing the material and permeable to air and water vapor, which is preferably designed as a textile bag. The heating element can be used cyclically, ie it is used in the desorbed state and gives off heat while absorbing water. As soon as the heating element is partially or completely saturated with water, the heating element can be regenerated by heating in a comparatively dry atmosphere. The temperature required for regeneration can be between less than 100 ° C to about 400 ° C. Accordingly, the textile material of the bag and its suture material should consist of a material that is temperature-resistant at least up to 200 ° C., preferably up to 400 ° C.
In alternativer Ausgestaltung der Erfindung ist das wärmeabgebende Material direkt in einen formstabilen Tragkörper eingebettet. Dieser kann beispielsweise aus einem faserigen, für Wasserdampf durchlässigen Werkstoff bestehen, plattenförmig ausgebildet sein und als Unterleg platte für das warmzuhaltende Substrat dienen. In weiterer Ausgestaltung der Erfindung kann der Tragkörper auch direkt in den Isolierbehälter integriert sein, wobei der Isolierbehälter eine Faltschachtel aus Pappe sein kann. Derartige Pappschachteln weisen in der Regel eine Lagenstruktur mit inneren Hohlräumen auf. Das wärmeabgebende Material läßt sich dann als Granulat oder Pulver bei der Herstellung der Pappschachtel in den Hohlräumen anordnen. Weiterhin ist auch eine Art Imprägnation eines zum Beispiel als von einer Vorratsrolle abreißbaren Papiers ausgebildeten Tragkörpers möglich, soweit von diesem eine hinreichende Menge an wärmeabgebenden Material aufgenommen werden kann.In an alternative embodiment of the invention, the heat-emitting material is embedded directly in a dimensionally stable support body. This can consist, for example, of a fibrous material which is permeable to water vapor, be plate-shaped and serve as an underlay plate for the substrate to be kept warm. In a further embodiment of the invention, the support body can also be integrated directly into the insulating container, wherein the insulating container can be a cardboard folding box. Cardboard boxes of this type generally have a layer structure with internal cavities. The heat-emitting material can then be arranged in the cavities as granules or powder during the manufacture of the cardboard box. Furthermore, a type of impregnation of a support body, for example, as a paper that can be torn off from a supply roll, is also possible, provided that a sufficient amount of heat-emitting material can be absorbed by it.
Die erfindungsgemäße Anordnung ist dann besonders effektiv, wenn sämtlicher von dem Substrat abgegebener Wasserdampf auch von dem Heizelement aufgenommen werden kann. In bevorzugter Ausgestaltung der Erfindung ist der Isolierbehälter daher dampfdicht verschließbar. Auf diese Weise ist sichergestellt, daß der von dem Substrat abgegebene Wasserdampf nicht an die Umgebung verloren wird, sondern überwiegend von dem Heizelement adsorbiert wird, wodurch dieses eine höhere Wärmemenge abgeben kann.The arrangement according to the invention is particularly effective when all the water vapor emitted by the substrate can also be absorbed by the heating element. In a preferred embodiment of the invention, the insulating container can therefore be closed in a vapor-tight manner. This ensures that the water vapor emitted by the substrate is not is lost to the environment, but is predominantly adsorbed by the heating element, which means that it can emit a higher amount of heat.
Die erfindungsgemäße Anordnung ist besonders dazu geeignet, Speisen warmzuhalten. Dabei ist von besonderem Vorteil, daß die Speisen durch das Heizelement nicht nur warmgehalten werden, sondern daß gleichzeitig der von den Speisen abgegebene, oft unerwünschte Wasserdampf von dem Heizelement adsorbiert wird. Gerade Speisen wie Pizzen, Pommes Frites und dergleichen, die im Rahmen einer Dienstleistung eines sogenannten Bringdienstes dem Konsumenten zugeliefert werden, erleiden oftmals auf dem Transportweg eine Qualitätseinbuße durch kondensierenden Wasserdampf. Ein Aufweichen ist neben einem Abkühlen der Speise hauptsächlich für eine erhebliche Genußminderung für den Konsumenten verantwortlich.The arrangement according to the invention is particularly suitable for keeping dishes warm. It is particularly advantageous that the food is not only kept warm by the heating element, but that at the same time the often unwanted water vapor emitted by the food is adsorbed by the heating element. In particular, dishes such as pizzas, French fries and the like, which are delivered to the consumer as part of a so-called delivery service, often suffer a loss in quality on the transport route due to condensing water vapor. In addition to cooling the food, softening is mainly responsible for a considerable reduction in enjoyment for the consumer.
Demzufolge besteht eine bevorzugte Verwendung der erfindungsgemäßen Warmhalteanordnung im Warm- und Trockenhalten von Wasserdampf abgebenden Speisen, insbesondere von Pizzen beim Transport in einem luftundurchlässigen Isolierbehälter.Accordingly, there is a preferred use of the warming arrangement according to the invention in keeping warm and dry water-vapor-releasing dishes, in particular pizzas, during transport in an air-tight insulating container.
Im folgenden wird die Erfindung anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert. Die einzige Figur zeigt einen Querschnitt durch einen Transportbehälter mit zwei darin angeordneten Pizzen und einem Heizelement.The invention is explained in more detail below with reference to an exemplary embodiment shown schematically in the drawing. The single figure shows a cross section through a transport container with two pizzas arranged therein and a heating element.
Die in der Figur dargestellte Anordnung zum Warmhalten von Speisen besteht im wesentlichen aus einem wärmeisolierten Transportbehälter 10, der durch einen Deckel 12 dampfdicht verschließbar ist. Der Behälter 10 und der Deckel 12 bestehen beispielsweise aus einem aufgeschäumten Kunststoffmaterial. Der Innenraum des Behälters 10 ist derart bemessen, daß mehrere in Pappkartons 14 verpackte Pizzen 16 übereinandergestapelt von dem Behälter aufgenommen werden können. Die Pappkartons 14 weisen an ihren Längsseiten mehrere Entlüftungsöffnungen 18 auf, durch die von den warmen Pizzen 16 abgegebener Wasserdampf 20 in den Luftraum 22 des Behälters 10 austreten kann. Der Wasser- dampf 20 wird von dem Heizelement 24 adsorbiert, wodurch dieses Adsorptionswärme 26 freigibt, die den Luftraum 22 und damit die Pizzen 16 erwärmt. Hierdurch wird gleichzeitig der den Pizzen 16 entweichende Wasserdampf gebunden, so daß diese nicht aufweichen können.The arrangement shown in the figure for keeping food warm essentially consists of a heat-insulated transport container 10 which can be closed in a vapor-tight manner by a cover 12. The container 10 and the lid 12 consist, for example, of a foamed plastic material. The interior of the container 10 is dimensioned such that a plurality of pizzas 16 packed in cardboard boxes 14 can be picked up and stacked on top of one another by the container. The cardboard boxes 14 have a plurality of ventilation openings 18 on their long sides, through which water vapor 20 emitted by the warm pizzas 16 can escape into the air space 22 of the container 10. The water vapor 20 is adsorbed by the heating element 24, whereby this releases heat of adsorption 26 which heats the air space 22 and thus the pizzas 16. As a result, the water vapor escaping the pizzas 16 is bound at the same time so that they cannot soften.
Das Heizelement 24 besteht aus einem Beutel 28, der aus einem luft- und dampfdurchlässigen Textilmaterial besteht und der mit einem granulierten Zeolith 30 gefüllt ist. Die Textilstruktur des Beutels 28 ist derart ausgelegt, daß zwar Luft und Wasserdampf hindurchtreten können, daß jedoch das Zeolithgranulat 30 zurückgehalten wird.The heating element 24 consists of a bag 28, which consists of an air and vapor permeable textile material and which is filled with a granulated zeolite 30. The textile structure of the bag 28 is designed in such a way that air and water vapor can pass through, but that the zeolite granules 30 are retained.
Das Zeolith 30 weist eine Adsorptionswärme von etwa 3700 kJ je kg aufgenommenen Wassers bei einer spezifischen Wärme von nur etwa 0,9 kJ/kg auf, so daß ein hoher Wirkungsgrad für das Heizelement erreicht wird, da fast die gesamte Adsorptionswärme zu Erwärmen des Luftraums 22 und damit der Pizzen 16 zur Verfügung steht. Ein weiterer Vorteil des Zeoliths besteht darin, daß es lebensmittelneutral ist und daher keine besonderen Sicherheitsmaßnahmen bei der Anordnung des Heizelements 24 in dem Behälter 10 getroffen werden müssen.The zeolite 30 has a heat of adsorption of about 3700 kJ per kg of water absorbed with a specific heat of only about 0.9 kJ / kg, so that a high efficiency for the heating element is achieved, since almost all of the heat of adsorption for heating the air space 22nd and so the pizza 16 is available. Another advantage of the zeolite is that it is food-neutral and therefore no special safety measures need to be taken when arranging the heating element 24 in the container 10.
Das Textilmaterial des Beutels 28 einschließlich der Nähte ist bis etwa 400 °C temperaturbeständig. Dadurch läßt sich das Heizelement 24 beispielsweise auf einfache Weise dadurch regenerieren, daß es zur Desorption des von dem Zeolith 30 aufgenommenen Wassers in einem Pizzaofen oder einem Mikrowellenherd erhitzt wird. Zusammenfassend ist folgendes festzuhalten: Die Erfindung betrifft eine Anordnung zum Warmhalten eines Substrats, das zumindest im erwärmten Zustand Wasserdampf abgibt. Um die Anordnung möglichst einfach und kostengünstig zu gestalten, ist gemäß der Erfindung vorgesehen, daß das Substrat 16 in einem gemeinsamen Luftraum 22 mit einem Heizelement 24 angeordnet ist, das ein unter Wasseraufnahme wärmeabgebendes Material 30 enthält. The textile material of the bag 28 including the seams is temperature resistant up to about 400 ° C. As a result, the heating element 24 can be regenerated in a simple manner, for example, by heating it in a pizza oven or a microwave oven to desorb the water taken up by the zeolite 30. In summary, the following can be stated: The invention relates to an arrangement for keeping a substrate warm, which emits water vapor at least in the heated state. In order to make the arrangement as simple and inexpensive as possible, it is provided according to the invention that the substrate 16 is arranged in a common air space 22 with a heating element 24 which contains a material 30 which emits heat while absorbing water.
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE50008848T DE50008848D1 (en) | 1999-08-04 | 2000-07-22 | HOLDING ARRANGEMENT |
| EP00958287A EP1199964B1 (en) | 1999-08-04 | 2000-07-22 | Heat maintenance device |
| AT00958287T ATE283657T1 (en) | 1999-08-04 | 2000-07-22 | WARM KEEPING ARRANGEMENT |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19936025A DE19936025A1 (en) | 1999-08-04 | 1999-08-04 | Warming arrangement |
| DE19936025.1 | 1999-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001010278A1 true WO2001010278A1 (en) | 2001-02-15 |
Family
ID=7916706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2000/007056 Ceased WO2001010278A1 (en) | 1999-08-04 | 2000-07-22 | Heat maintenance device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1199964B1 (en) |
| AT (1) | ATE283657T1 (en) |
| DE (2) | DE19936025A1 (en) |
| WO (1) | WO2001010278A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10110850A1 (en) * | 2001-03-07 | 2002-09-12 | Rolf Groeger | Condensate accumulator is located in container and does not allow water to trickle back onto foodstuff, absorbing vapors so it is not necessary to lead away vapors and heat energy with it |
| EP2447624A3 (en) * | 2010-10-28 | 2012-12-05 | Vaillant GmbH | Heat pump |
| DE102012008524A1 (en) * | 2012-05-02 | 2013-11-07 | Antonio Crapanzano | Pizza transport box for transporting pizza by pizza bringing service, has lid base in which openings are formed for passage of moisture-laden warm air from accommodation space |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0140380A2 (en) * | 1983-10-31 | 1985-05-08 | ZEO-TECH Zeolith Technologie GmbH | Process and apparatus for heating a medium |
| EP0203558A2 (en) * | 1985-05-28 | 1986-12-03 | ZEO-TECH Zeolith Technologie GmbH | Apparatus for and method of water heating by an intermittent adsorption process |
| WO1989008806A1 (en) * | 1988-03-17 | 1989-09-21 | International Thermal Packaging, Inc. | Apparatus and method for simultaneously heating and cooling separate zones |
| US5159177A (en) * | 1990-08-14 | 1992-10-27 | Alois Kinberger | Container for transporting hot ready-to-eat meals and keeping them hot |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19507768A1 (en) * | 1994-09-12 | 1996-03-14 | Electrolux Leisure Appliances | Sorption cooling unit |
| DE29508306U1 (en) * | 1995-05-19 | 1995-08-03 | Serr, Johannes, 73230 Kirchheim | Transport container for pizzas |
-
1999
- 1999-08-04 DE DE19936025A patent/DE19936025A1/en not_active Withdrawn
-
2000
- 2000-07-22 WO PCT/EP2000/007056 patent/WO2001010278A1/en not_active Ceased
- 2000-07-22 AT AT00958287T patent/ATE283657T1/en not_active IP Right Cessation
- 2000-07-22 DE DE50008848T patent/DE50008848D1/en not_active Expired - Lifetime
- 2000-07-22 EP EP00958287A patent/EP1199964B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0140380A2 (en) * | 1983-10-31 | 1985-05-08 | ZEO-TECH Zeolith Technologie GmbH | Process and apparatus for heating a medium |
| EP0203558A2 (en) * | 1985-05-28 | 1986-12-03 | ZEO-TECH Zeolith Technologie GmbH | Apparatus for and method of water heating by an intermittent adsorption process |
| WO1989008806A1 (en) * | 1988-03-17 | 1989-09-21 | International Thermal Packaging, Inc. | Apparatus and method for simultaneously heating and cooling separate zones |
| US5159177A (en) * | 1990-08-14 | 1992-10-27 | Alois Kinberger | Container for transporting hot ready-to-eat meals and keeping them hot |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50008848D1 (en) | 2005-01-05 |
| EP1199964B1 (en) | 2004-12-01 |
| ATE283657T1 (en) | 2004-12-15 |
| DE19936025A1 (en) | 2001-02-08 |
| EP1199964A1 (en) | 2002-05-02 |
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