EP4258813A1 - Heatable body - Google Patents
Heatable body Download PDFInfo
- Publication number
- EP4258813A1 EP4258813A1 EP23160104.8A EP23160104A EP4258813A1 EP 4258813 A1 EP4258813 A1 EP 4258813A1 EP 23160104 A EP23160104 A EP 23160104A EP 4258813 A1 EP4258813 A1 EP 4258813A1
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- European Patent Office
- Prior art keywords
- heating
- body according
- heating tracks
- tracks
- heated body
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/005—Heaters using a particular layout for the resistive material or resistive elements using multiple resistive elements or resistive zones isolated from each other
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/007—Heaters using a particular layout for the resistive material or resistive elements using multiple electrically connected resistive elements or resistive zones
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
- H05B2214/04—Heating means manufactured by using nanotechnology
Definitions
- the invention relates to a heatable body.
- Such a heatable body can be, for example, a drying roller, as used in the textile or paper industry for drying webs containing moisture that are passed over the body, with the moisture contained in the webs due to the heated surface of the body released more quickly and the web is dried.
- a drying roller as used in the textile or paper industry for drying webs containing moisture that are passed over the body, with the moisture contained in the webs due to the heated surface of the body released more quickly and the web is dried.
- the preferred heating medium for such bodies has so far been steam, which is essentially injected into the body at a pressure of up to 10 bar. By condensing the steam, heat is transferred to the body and thus to the web to be dried. Direct application of fuel to the heating surfaces is also state of the art. So far, the use of electrical heating sources in the form of heating rods within the body has taken a back seat. Only a few processes were equipped with electrical heating sources because the costs were many times that of liquid or gaseous fuels.
- the shows DE 886 182 B an electrically heated drying cylinder with a heating device that is stationary compared to the rotating drying cylinder. There is a distance between the heating device and the inner surface of the drying cylinder, which leads to high losses due to the high heat transfer resistance of the air it contains.
- the DE 1 757 215 C relates to a carrier fabric, as can be used in particular in floor heating.
- Helical heating cables which are operated by an electrical power supply, are incorporated into the carrier fabric.
- the utility model DE 20 308 113 U1 describes an electrical surface element for electrical heating or current dissipation with at least one electrical conductive element that is laid between tubular contact conductors.
- DE 2 209 793 A discloses a tubular floor covering heater operated with hot water, which can only be used for purposes in two dimensions and preferably for roads, bridge surfaces and slopes. There are several heating stations here that serve individual sections of the route between the stations with a heating load.
- the invention is based on the object of providing an electrically heatable body which can be heated with as little loss as possible and variably.
- At least one modular arrangement of flexible, electrically operated heating tracks with direct contact to the surface of the body is present in or on the heatable body for its heating, the heating tracks having a support structure made of a glass fiber fabric provided with an electrically conductive coating.
- modulear arrangement is to be understood as meaning a building block or modular principle.
- the individual heating tracks can be put together and/or controlled as desired or interact via appropriate interfaces.
- individual heating tracks are used, which, due to their modular arrangement on or in the body, which is preferably a rotationally symmetrical body, enable electrical, controllable heating, preferably using renewable electricity, which limits the required heat locally or over the entire surface generated directly at the desired heating and drying area of the body.
- a flexible heating track can be adapted to the surface of the body, which means in the broader sense that the heating track is, for example, deformable, i.e. designed to be flexible.
- a glass fiber fabric serves as the support structure for the heating tracks used, which has a dried, current-conducting suspension or dispersion coating on at least one side.
- a current-conducting heating track can be created that is flexible, i.e. deformable.
- suspensions and dispersions of fibers and fiber composites are produced, which mainly have to be dried in order to be able to be further processed as a finished product or even just as a semi-finished product.
- such a suspension or dispersion coating contains carbon components in the form of carbon nanotubes, which enable electrical conductivity.
- the glass fiber fabric is a temperature-stable material with at least one-sided coating made of a carbon nanotube suspension or dispersion.
- the glass fiber fabric serving as a carrier fabric with a basis weight of 200 to 1600 g/m 2 has a coating on at least one side of a carbon nanotube suspension or dispersion with a basis weight of 50 to 200 g/m 2 and on on the side opposite the coating side with carbon nanotubes, an electrical insulation layer made of a polymer material, which, however, is thermally conductive and has a basis weight between 50 and 800 g/m 2 .
- the multi-layer design of the heating tracks results in a sandwich structure.
- a heatable body With a heatable body according to the invention, it is possible to achieve a previously unknown temperature profile using the heating tracks used, viewed across the width of the heating track, so that, for example, a temperature range of up to 400 ° C can be generated.
- a glass fiber fabric is preferably suitable as a support structure.
- the width of the heating tracks is preferably at least 300 mm.
- the individual, sandwich-like layers of heating tracks and intermediate layers can be fixed to one another and to the body non-positively, with clamping rings or by means of applied pressure, or connected to one another and to the body in a materially bonded manner.
- the thermal output of the existing heating tracks is at least 2 kW / square meter, the heating tracks also being operated with an electrical output of at least 2 kW / square meter with an efficiency of at least 95% and also a multi-phase electrical feed with a voltage supply of have at least 230 V.
- the heatable body is a body which is rotatably mounted about an axis of rotation and which, as a special shape, has a circular cylindrical cross section.
- a solution must be found for supplying power to the heating tracks, which, according to a further development of the invention, consists in the body having a rotary feedthrough for supplying voltage to the heating tracks.
- Such rotary feedthroughs are known per se and can be used sensibly for the present purpose because they are simple and inexpensive.
- the flexible heating tracks are viewed in the longitudinal direction of the body, arranged in mutually parallel tracks or as individual pieces in or on the body.
- flexible heating can be achieved using the heating tracks that can be controlled electrically individually or in groups individual areas of the body. This means that only those areas of the body that actually require heat energy can be heated, meaning that significant amounts of electrical energy can be saved.
- the heating tracks can be designed as required.
- the heating tracks it is possible for the heating tracks to consist of conductive strips or of coated full or partial conductive areas.
- a special embodiment variant of the heatable body can also be seen in the fact that it is a hollow body, in or on which at least one modular arrangement of flexible, electrically operated heating tracks is present for its heating.
- a special shape can be a body with a circular cylindrical cross section. If this is designed as a hollow body, it is therefore a hollow cylinder.
- the body can also have any surface geometry.
- the body has depressions, patterns, logos, negative shapes of food products or plastic parts.
- the body can be a rotating circular cylinder made of cast iron, steel, plastic or a composite material, on the heated surface of which web-shaped materials containing moisture are dried along the surface.
- the web-shaped materials can be, for example, textile webs or paper webs.
- the heating tracks and those for producing the electrically conductive connections between the Heating tracks and the electrical cables used for the electronic control are laminated with an insulating plastic that is, however, thermally conductive.
- the heatable body 1 shown has a circular cylindrical cross section and consists of a solid material such as cast iron, steel, plastic or composite.
- the heating tracks 2 to 5 can also have other widths.
- the two-layer design of the heating tracks 2 and 3 or 4 and 5 shown can be used to increase the number of layers as required.
- the inserted glass fiber fabric 11 can be seen as an example for all other heating tracks, which is a temperature-stable material and is provided with an at least one-sided coating made of a carbon nanotube suspension or dispersion.
- the shape of the body 1 can vary across its width, so that, for example, the outer layer can contain asymmetrical depressions, patterns, logos and negative shapes of food products or plastic parts in the surface.
- the exemplary embodiment of a body 1 shown is a hollow cylinder with a multi-phase electrical supply 6.
- This body 1 can also be made of materials such as cast iron, steel, plastic or composite.
- the heating tracks 2 and 3 are also layered on top of each other here. The same applies to the heating tracks 4 and 5.
- the heating tracks 2 and 3 or 4 and 5 are inserted into the cavity 8 of the hollow cylindrical body 1 in the direction of arrow A.
- the heating tracks 2 and 3 or 4 and 5 are therefore parallel to one another on the inner surface 9 of the body 1, which is achieved optimally due to their flexibility.
- heating tracks 2 and 3 are provided next to heating tracks 4 and 5.
Abstract
Es wird ein beheizbarer Körper (1) vorgestellt, in oder auf dem zu seiner Beheizung mindestens eine modulare Anordnung von flexibel ausgeführten, elektrisch betriebenen Heizbahnen (2, 3) mit Direktkontakt zur Oberfläche des Körpers (1) vorhanden ist, wobei die Heizbahnen (2, 3) eine Trägerstruktur aus einem mit einer elektrisch leitfähigen Beschichtung versehenen Glasfasergewebe aufweisen.A heatable body (1) is presented, in or on which at least one modular arrangement of flexible, electrically operated heating tracks (2, 3) with direct contact to the surface of the body (1) is present for its heating, the heating tracks (2 , 3) have a support structure made of a glass fiber fabric provided with an electrically conductive coating.
Description
Die Erfindung betrifft einen beheizbaren Körper.The invention relates to a heatable body.
Ein derartiger, beheizbarer Körper kann zum Beispiel eine Trockenwalze sein, wie sie in der Textil- oder Papierindustrie zur Trocknung Feuchtigkeit enthaltender Bahnen zum Einsatz kommt, die über den Körper geführt werden, wobei auf Grund der erwärmten Oberfläche des Körpers die in den Bahnen enthaltene Feuchtigkeit beschleunigt abgegeben und die Bahn somit getrocknet wird.Such a heatable body can be, for example, a drying roller, as used in the textile or paper industry for drying webs containing moisture that are passed over the body, with the moisture contained in the webs due to the heated surface of the body released more quickly and the web is dried.
Bevorzugtes Heizmedium derartiger Körper ist bisher Dampf, der im Wesentlichen mit einem Druck von bis zu 10 bar in den Körper gegeben wird. Durch das Kondensieren des Dampfes erfolgt die Wärmeübertragung an den Körper und somit an die zu trocknende Bahn. Eine direkte Beaufschlagung der Heizflächen durch Brennstoffe ist ebenfalls Stand der Technik. Bisher ist die Nutzung von elektrischen Heizquellen in Form von Heizstäben innerhalb des Körpers eher in den Hintergrund getreten. Nur wenige Prozesse wurden mit elektrischen Heizquellen ausgestattet, da die Kosten hierfür ein Vielfaches flüssiger oder gasförmiger Brennstoffe betrugen.The preferred heating medium for such bodies has so far been steam, which is essentially injected into the body at a pressure of up to 10 bar. By condensing the steam, heat is transferred to the body and thus to the web to be dried. Direct application of fuel to the heating surfaces is also state of the art. So far, the use of electrical heating sources in the form of heating rods within the body has taken a back seat. Only a few processes were equipped with electrical heating sources because the costs were many times that of liquid or gaseous fuels.
Mit der notwendigen Reduktion der Nutzung fossiler Brennstoffe und gesteigerter Nutzung der erneuerbaren Energien steht die Direkt-Strom-Nutzung im Vordergrund. Insbesondere in ländlichen Gebieten wird durch die dort machbare Eigenstromerzeugung ein zusätzlicher Erwerbszweig ermöglicht.With the necessary reduction in the use of fossil fuels and increased use of renewable energies, the focus is on the direct use of electricity. Particularly in rural areas, the ability to generate your own electricity makes an additional source of income possible.
Der bisher bekannte Stand der Technik weist hohe Wärmeübertragungsverluste auf, wobei es teilweise auch zu Systemüberhitzungen kommen kann.The previously known state of the art has high heat transfer losses, which can sometimes lead to system overheating.
Beispielsweise zeigt die
Die
Das Gebrauchsmuster
In der
Aus der
Der Erfindung liegt die Aufgabe zugrunde, einen elektrisch beheizbaren Körper bereitzustellen, der möglichst verlustarm und variabel beheizt werden kann.The invention is based on the object of providing an electrically heatable body which can be heated with as little loss as possible and variably.
Die Erfindung löst diese Aufgabenstellung mit den Merkmalen des Patentanspruches 1.The invention solves this problem with the features of
Weitere Ausgestaltungen der Erfindung sind Gegenstand der sich anschließenden Unteransprüche.Further refinements of the invention are the subject of the subsequent subclaims.
In oder auf dem beheizbaren Körper ist erfindungsgemäß zu seiner Beheizung mindestens eine modulare Anordnung von flexibel ausgeführten, elektrisch betriebenen Heizbahnen mit Direktkontakt zur Oberfläche des Körpers vorhanden, wobei die Heizbahnen eine Trägerstruktur aus einem mit einer elektrisch leitfähigen Beschichtung versehenen Glasfasergewebe aufweisen.According to the invention, at least one modular arrangement of flexible, electrically operated heating tracks with direct contact to the surface of the body is present in or on the heatable body for its heating, the heating tracks having a support structure made of a glass fiber fabric provided with an electrically conductive coating.
Unter "modularer Anordnung" ist im erfindungsgemäßen Sinne ein Baustein- oder Baukastenprinzip zu verstehen. Dabei können die einzelnen Heizbahnen beliebig zusammengefügt und/oder angesteuert werden beziehungsweise über entsprechende Schnittstellen interagieren. Hierfür kommen einzelne Heizbahnen zum Einsatz, die durch ihre modulare Anordnung an oder in dem Körper, bei dem es sich bevorzugt um einen rotationssymmetrischen Körper handelt, eine elektrische, ansteuerbare Beheizung, bevorzugt durch erneuerbaren Strom, ermöglichen, die die benötigte Wärme lokal begrenzt oder vollflächig unmittelbar an dem gewünschten Erhitzungs- und Trocknungsbereich des Körpers erzeugt.In the sense of the invention, “modular arrangement” is to be understood as meaning a building block or modular principle. The individual heating tracks can be put together and/or controlled as desired or interact via appropriate interfaces. For this purpose, individual heating tracks are used, which, due to their modular arrangement on or in the body, which is preferably a rotationally symmetrical body, enable electrical, controllable heating, preferably using renewable electricity, which limits the required heat locally or over the entire surface generated directly at the desired heating and drying area of the body.
Dabei ist im erfindungsgemäßen Sinne eine flexibel ausgeführte Heizbahn an die Oberfläche des Körpers anpassbar, das heißt im weiteren Sinne, dass die Heizbahn beispielsweise verformbar, also biegsam ausgeführt ist.In the sense of the invention, a flexible heating track can be adapted to the surface of the body, which means in the broader sense that the heating track is, for example, deformable, i.e. designed to be flexible.
Als Trägerstruktur der zum Einsatz kommenden Heizbahnen dient vorliegend ein Glasfasergewebe, welches mindestens einseitig eine eingetrocknete, stromleitende Suspensions- oder Dispersionsbeschichtung aufweist. Auf diese Weise kann eine stromleitende Heizbahn erzeugt werden, die flexibel, also verformbar ist. Zur Änderung von Stoffeigenschaften werden Suspensionen und Dispersionen von Fasern und Faserverbunden hergestellt, die überwiegend eingetrocknet werden müssen, um als Fertigprodukt oder auch nur als Halbfertigprodukt weiterverarbeitet werden zu können.In the present case, a glass fiber fabric serves as the support structure for the heating tracks used, which has a dried, current-conducting suspension or dispersion coating on at least one side. In this way, a current-conducting heating track can be created that is flexible, i.e. deformable. To change material properties, suspensions and dispersions of fibers and fiber composites are produced, which mainly have to be dried in order to be able to be further processed as a finished product or even just as a semi-finished product.
In an sich bekannter Weise enthält eine derartige Suspensions- oder Dispersionsbeschichtung Carbonanteile in Form von Carbon-Nanotubes, die die elektrische Leitfähigkeit ermöglichen. In besonders bevorzugter Weise handelt es sich bei dem Glasfasergewebe um ein temperaturstabiles Material mit der mindestens einseitigen Beschichtung aus einer Carbon-Nanotubes-Suspension oder Dispersion.In a manner known per se, such a suspension or dispersion coating contains carbon components in the form of carbon nanotubes, which enable electrical conductivity. In a particularly preferred manner, the glass fiber fabric is a temperature-stable material with at least one-sided coating made of a carbon nanotube suspension or dispersion.
Der Wirkungsgrad herkömmlicher Heizverfahren mit metallischen Heizstäben beträgt nur 60 Prozent der hier beschriebenen Vorgehensweise mit den erfindungsgemäßen Heizbahnen.The efficiency of conventional heating methods with metallic heating elements is only 60 percent of the procedure described here with the heating tracks according to the invention.
Gemäß einer weiteren Ausgestaltung der vorgeschlagen, dass das als Trägergewebe dienende Glasfasergewebe mit einem Flächengewicht von 200 bis 1600 g/ m2 mindestens einseitig eine Beschichtung aus einer Carbon-Nanotube-Suspension oder Dispersion mit einem Flächengewicht von 50 bis 200 g/m2 und auf der der Beschichtungsseite mit Carbon-Nanotubes gegenüberliegenden Seite eine elektrische Isolationsschicht aus einem Polymerwerkstoff, die jedoch wärmeleitend ist und ein Flächengewicht zwischen 50 und 800 g/m2 aufweist. Durch die mehrlagige Ausführung der Heizbahnen ergibt sich folglich eine Sandwichstruktur.According to a further embodiment of the proposed that the glass fiber fabric serving as a carrier fabric with a basis weight of 200 to 1600 g/m 2 has a coating on at least one side of a carbon nanotube suspension or dispersion with a basis weight of 50 to 200 g/m 2 and on on the side opposite the coating side with carbon nanotubes, an electrical insulation layer made of a polymer material, which, however, is thermally conductive and has a basis weight between 50 and 800 g/m 2 . The multi-layer design of the heating tracks results in a sandwich structure.
Bei einem beheizbaren Körper nach der Erfindung ist es möglich, durch die zum Einsatz kommenden Heizbahnen, über die Breite der Heizbahn betrachtet, ein bisher unbekanntes Temperaturprofil zu verwirklichen, sodass zum Beispiel ein Temperaturbereich bis zu 400°C erzeugt werden kann. Bei derartigen Oberflächentemperaturen des zu beheizenden Körpers ist ein Glasfasergewebe als Trägerstruktur in bevorzugter Weise geeignet. Die Breite der Heizbahnen beträgt vorzugsweise mindestens 300 mm.With a heatable body according to the invention, it is possible to achieve a previously unknown temperature profile using the heating tracks used, viewed across the width of the heating track, so that, for example, a temperature range of up to 400 ° C can be generated. At such surface temperatures of the body to be heated, a glass fiber fabric is preferably suitable as a support structure. The width of the heating tracks is preferably at least 300 mm.
Wie zuvor bereits ausgeführt wurde, sind an dem erfindungsgemäß beheizbaren Körper mehrere, sandwichartig übereinander angeordnete Heizbahnen vorhanden sind, wobei zwischen den einzelnen Heizbahnen jeweils eine elektrisch isolierende aber wärmeleitende Zwischenschicht vorhanden ist.As has already been stated previously, there are several heating tracks arranged on top of one another in a sandwich-like manner on the body which can be heated according to the invention are, with an electrically insulating but heat-conducting intermediate layer being present between the individual heating tracks.
Dabei können die einzelnen, sandwichartig angeordneten Lagen aus Heizbahnen und Zwischenschichten kraftschlüssig, mit Klemmringen oder mittels eines aufgebrachten Druckes, aneinander und an dem Körper fixiert oder stoffschlüssig miteinander und mit dem Körper verbunden werden.The individual, sandwich-like layers of heating tracks and intermediate layers can be fixed to one another and to the body non-positively, with clamping rings or by means of applied pressure, or connected to one another and to the body in a materially bonded manner.
Gemäß einer Ausgestaltung der Erfindung beträgt die Wärmeleistung der vorhandenen Heizbahnen mindestens 2 kW / Quadratmeter, wobei die Heizbahnen auch mit einer elektrischen Leistung von mindestens 2 kW / Quadratmeter bei einem Wirkungsgrad von mindestens 95% betrieben werden und zudem eine vielphasige elektrische Einspeisung mit einer Spannungsversorgung von mindestens 230 V aufweisen.According to one embodiment of the invention, the thermal output of the existing heating tracks is at least 2 kW / square meter, the heating tracks also being operated with an electrical output of at least 2 kW / square meter with an efficiency of at least 95% and also a multi-phase electrical feed with a voltage supply of have at least 230 V.
Ein besonderes Problem stellt sich, wenn es sich bei dem beheizbaren Körper um einen um eine Rotationsachse drehbar gelagerten Körper handelt, der als Sonderform einen kreiszylindrischen Querschnitt aufweist. In diesem Fall muss eine Lösung für die Stromzuführung zu den Heizbahnen gefunden werden, die gemäß einer Weiterbildung der Erfindung darin besteht, dass der Körper eine Drehdurchführung für die Spannungsversorgung der Heizbahnen aufweist. Derartige Drehdurchführungen sind an sich bekannt und lassen sich für den vorliegenden Einsatzzweck sinnvoll nutzen, da sie einfach und kostengünstig ausgeführt sind.A particular problem arises when the heatable body is a body which is rotatably mounted about an axis of rotation and which, as a special shape, has a circular cylindrical cross section. In this case, a solution must be found for supplying power to the heating tracks, which, according to a further development of the invention, consists in the body having a rotary feedthrough for supplying voltage to the heating tracks. Such rotary feedthroughs are known per se and can be used sensibly for the present purpose because they are simple and inexpensive.
Um die einzelnen Heizbahnen einzeln oder gruppenweise elektrisch ansteuern zu können, ist eine elektronische Steuerung erforderlich, deren Ausführung und Einsatz dem hier zuständigen Fachmann bekannt ist.In order to be able to electrically control the individual heating tracks individually or in groups, an electronic control is required, the design and use of which is known to the person responsible here.
Die flexiblen Heizbahnen werden erfindungsgemäß und in Längsrichtung des Körpers betrachtet, in zueinander parallelen Bahnen oder als Einzelstücke in oder an dem Körper angeordnet. Auf diese Weise lässt sich mittels der elektrisch einzeln oder in Gruppen ansteuerbaren Heizbahnen eine flexible Beheizung einzelner Bereiche des Körpers umsetzen. Dadurch können nur die Bereiche des Körpers beheizt werden, in denen tatsächlich Wärmeenergie benötigt wird wodurch erhebliche Mengen an Elektroenergie eingespart werden können.According to the invention, the flexible heating tracks are viewed in the longitudinal direction of the body, arranged in mutually parallel tracks or as individual pieces in or on the body. In this way, flexible heating can be achieved using the heating tracks that can be controlled electrically individually or in groups individual areas of the body. This means that only those areas of the body that actually require heat energy can be heated, meaning that significant amounts of electrical energy can be saved.
Durch die zuvor bereits erwähnte Beschichtung des Glasfasergewebes können die Heizbahnen bedarfsgerecht ausgeführt werden. So ist es beispielsweise entsprechend einer Ausgestaltung der Erfindung möglich, dass die Heizbahnen aus leitfähigen Streifen oder aus beschichteten voll- oder teilflächigen, leitfähigen Bereichen bestehen.Thanks to the previously mentioned coating of the glass fiber fabric, the heating tracks can be designed as required. For example, according to one embodiment of the invention, it is possible for the heating tracks to consist of conductive strips or of coated full or partial conductive areas.
Eine spezielle Ausführungsvariante des beheizbaren Körpers ist ferner darin zu sehen, dass dieser ein Hohlkörper ist, in oder auf dem zu seiner Beheizung mindestens eine modulare Anordnung von flexibel ausgeführten, elektrisch betriebenen Heizbahnen vorhanden ist. Wie zuvor bereits erwähnt wurde, kann eine Spezialform ein Körper mit einem kreiszylindrischen Querschnitt sein. Wird dieser als Hohlkörper ausgeführt, so handelt es sich folglich um einen Hohlzylinder.A special embodiment variant of the heatable body can also be seen in the fact that it is a hollow body, in or on which at least one modular arrangement of flexible, electrically operated heating tracks is present for its heating. As mentioned previously, a special shape can be a body with a circular cylindrical cross section. If this is designed as a hollow body, it is therefore a hollow cylinder.
Neben der zuvor erwähnten Zylinder- oder Hohlzylinderform kann der Körper jedoch auch jede beliebige Oberflächengeometrie aufweisen. So ist es beispielsweise möglich, dass der Körper Vertiefungen, Muster, Logos, Negativ-Formen von Lebensmittelprodukten oder Kunststoffteilen aufweist.In addition to the previously mentioned cylindrical or hollow cylindrical shape, the body can also have any surface geometry. For example, it is possible that the body has depressions, patterns, logos, negative shapes of food products or plastic parts.
Darüber hinaus kann entsprechend einer weiterbildenden Maßnahme der Erfindung der Körper ein rotierend gelagerter Kreiszylinder aus Guss, Stahl, Kunststoff oder aus einem Verbundstoff sein, an dessen beheizter Oberfläche bahnförmige, entlang der Oberfläche geführte, Feuchtigkeit enthaltende Materialien getrocknet werden. Bei den bahnförmigen Materialien kann es sich zum Beispiel um Textilbahnen oder Papierbahnen handeln.In addition, according to a further development measure of the invention, the body can be a rotating circular cylinder made of cast iron, steel, plastic or a composite material, on the heated surface of which web-shaped materials containing moisture are dried along the surface. The web-shaped materials can be, for example, textile webs or paper webs.
Während des Trocknungsprozesses tritt Feuchtigkeit aus, sodass einer weiteren Ausgestaltung der Erfindung folgend, vorgeschlagen wird, dass die Heizbahnen und die zur Herstellung der elektrisch leitenden Verbindungen zwischen den Heizbahnen und der elektronischen Steuerung verwendeten Elektroleitungen mit einem isolierenden Kunststoff laminiert sind, der jedoch wärmeleitend ist.During the drying process, moisture escapes, so that according to a further embodiment of the invention, it is proposed that the heating tracks and those for producing the electrically conductive connections between the Heating tracks and the electrical cables used for the electronic control are laminated with an insulating plastic that is, however, thermally conductive.
Die Erfindung wird nachfolgend anhand der beigefügten Zeichnungen näher erläutert. Die gezeigten Ausführungsbeispiele stellen dabei keine Einschränkung auf die dargestellten Varianten dar, sondern dienen lediglich der Erläuterung eines Prinzips der Erfindung.The invention is explained in more detail below with reference to the accompanying drawings. The exemplary embodiments shown do not represent a restriction to the variants shown, but merely serve to explain a principle of the invention.
Gleiche oder gleichartige Bauteile werden stets mit denselben Bezugsziffern bezeichnet. Um die erfindungsgemäße Funktionsweise veranschaulichen zu können, sind in den Figuren nur stark vereinfachte Prinzipdarstellungen gezeigt, bei denen auf die für die Erfindung nicht wesentlichen Bauteile verzichtet wurde. Dies bedeutet jedoch nicht, dass derartige Bauteile bei einer erfindungsgemäßen Lösung nicht vorhanden sind.The same or similar components are always designated with the same reference numbers. In order to be able to illustrate the functionality according to the invention, only very simplified schematic representations are shown in the figures, in which the components that are not essential to the invention have been omitted. However, this does not mean that such components are not present in a solution according to the invention.
Es zeigt:
- Figur 1:
- einen Körper mit einem kreiszylindrischen Querschnitt
und - Figur 2:
- einen Körper in einer Ausführung als Hohlzylinder.
- Figure 1:
- a body with a circular cylindrical cross section
and - Figure 2:
- a body designed as a hollow cylinder.
Der in der
Die Form des Körpers 1 kann über seine Breite variieren, sodass zum Beispiel die äußere Lage unsymmetrische Vertiefungen, Muster, Logos sowie Negativ-Formen von Lebensmittelprodukten oder Kunststoffteilen in der Oberfläche enthalten kann.The shape of the
Bei dem in der
- 1.1.
- KörperBody
- 2.2.
- Heizbahnheating track
- 3.3.
- Heizbahnheating track
- 4.4.
- Heizbahnheating track
- 5.5.
- Heizbahnheating track
- 6.6.
- elektrische Einspeisung (Elektroleitungen)electrical feed (electrical cables)
- 7.7.
- elektronische Steuerungelectronic control
- 8.8th.
- Hohlraumcavity
- 9.9.
- InnenmantelflächeInner lateral surface
- 10.10.
- Außenoberflächeexternal surface
- 11.11.
- Glasfasergewebe mit Nano-CarbonschichtGlass fiber fabric with nano carbon layer
Claims (18)
dadurch gekennzeichnet, dass
die flexibel ausgeführten Heizbahnen (2-5) an die Oberfläche des Körpers (1) anpassbar sind.Heated body according to claim 1,
characterized in that
the flexible heating tracks (2-5) can be adapted to the surface of the body (1).
dadurch gekennzeichnet, dass
das Glasfasergewebe eine eingetrocknete, stromleitende Suspensionsoder Dispersionsbeschichtung aufweist.Heated body according to one of the above claims,
characterized in that
the glass fiber fabric has a dried, electrically conductive suspension or dispersion coating.
dadurch gekennzeichnet, dass
die Suspensions- oder Dispersionsbeschichtung Carbonanteile in Form von Carbon-Nanotubes enthält.Heated body according to claim 3,
characterized in that
the suspension or dispersion coating contains carbon components in the form of carbon nanotubes.
dadurch gekennzeichnet, dass
das als Trägergewebe dienende Glasfasergewebe mit einem Flächengewicht von 200 bis 1600 g/ m2 mindestens einseitig eine Beschichtung aus einer Carbon-Nanotube-Suspension oder Dispersion mit einem Flächengewicht von 50 bis 200 g/m2 und auf der der Beschichtungsseite mit Carbon-Nanotubes gegenüberliegenden Seite eine elektrische Isolationsschicht aus einem Polymerwerkstoff, die wärmeleitend ist, mit einem Flächengewicht zwischen 50 und 800 g/m2 aufweist.Heated body according to one of the above claims,
characterized in that
the glass fiber fabric serving as a carrier fabric with a basis weight of 200 to 1600 g/m 2 has a coating on at least one side of a carbon nanotube suspension or dispersion with a basis weight of 50 to 200 g/m 2 and on the side opposite the coating side with carbon nanotubes Page an electrical insulation layer made of a polymer material, which is thermally conductive, with a basis weight between 50 and 800 g/m 2 .
dadurch gekennzeichnet, dass
die eine Oberflächentemperatur bis zu 400 °C erzeugenden Heizbahnen (2-5) jeweils eine Breite aufweisen, die mindestens 300 mm beträgt.Heated body according to one of the above claims,
characterized in that
the heating tracks (2-5), which generate a surface temperature of up to 400 °C, each have a width that is at least 300 mm.
dadurch gekennzeichnet, dass
an dem Körper (1) mehrere, sandwichartig übereinander angeordnete Heizbahnen (2-5) vorhanden sind, wobei zwischen den einzelnen Heizbahnen (2-5) jeweils eine elektrisch isolierende aber wärmeleitende Zwischenschicht vorhanden ist.Heated body according to one of the above claims,
characterized in that
There are several heating tracks (2-5) arranged on top of each other in a sandwich-like manner on the body (1), with an electrically insulating but heat-conducting intermediate layer being present between the individual heating tracks (2-5).
dadurch gekennzeichnet, dass
die einzelnen Lagen aus Heizbahnen (2-5) und Zwischenschichten kraftschlüssig, mit Klemmringen oder mittels eines aufgebrachten Druckes, aneinander und an dem Körper (1) fixiert oder stoffschlüssig miteinander und mit dem Körper (1) verbunden sind.Heated body according to claim 6,
characterized in that
the individual layers of heating tracks (2-5) and intermediate layers are fixed to one another and to the body (1) in a non-positive manner, with clamping rings or by means of applied pressure, or are connected to one another and to the body (1) in a materially bonded manner.
dadurch gekennzeichnet, dass
die Heizbahnen (2-5) eine elektrische Leistung von mindestens 2 kW / Quadratmeter und einen Wirkungsgrad von mindestens 95% aufweisen.Heated body according to one of the above claims,
characterized in that
the heating tracks (2-5) have an electrical output of at least 2 kW / square meter and an efficiency of at least 95%.
dadurch gekennzeichnet, dass
die Heizbahnen (2-5) eine vielphasige elektrische Einspeisung (4) mit einer Spannungsversorgung von mindestens 230 V aufweisen.Heated body according to one of the above claims,
characterized in that
the heating tracks (2-5) have a multi-phase electrical supply (4) with a voltage supply of at least 230 V.
dadurch gekennzeichnet, dass
der Körper (1) eine Drehdurchführung für die Spannungsversorgung der Heizbahnen (2-5) aufweist.Heated body according to one of the above claims,
characterized in that
the body (1) has a rotary feedthrough for supplying power to the heating tracks (2-5).
dadurch gekennzeichnet, dass
die einzelnen Heizbahnen (2-5) mittels einer elektronischen Steuerung (7) einzeln oder gruppenweise elektrisch ansteuerbar sind.Heated body according to one of the above claims,
characterized in that
the individual heating tracks (2-5) can be electrically controlled individually or in groups by means of an electronic control (7).
dadurch gekennzeichnet, dass
die flexiblen Heizbahnen (2-5) in zueinander parallelen Bahnen oder als Einzelstücke in oder an dem Körper (1) angeordnet sind und daher mittels der elektrisch einzeln oder in Gruppen ansteuerbaren Heizbahnen (2-5) eine flexible Beheizung einzelner Bereiche des Körpers (1) ermöglicht ist.Heated body according to one of the above claims,
characterized in that
the flexible heating tracks (2-5) are arranged in parallel tracks or as individual pieces in or on the body (1) and therefore flexible heating of individual areas of the body (1) by means of the heating tracks (2-5) which can be controlled electrically individually or in groups ) is possible.
dadurch gekennzeichnet, dass
die Heizbahnen (2-5) aus leitfähigen Streifen oder aus beschichteten volloder teilflächigen, leitfähigen Bereichen bestehen.Heated body according to one of the above claims,
characterized in that
the heating tracks (2-5) consist of conductive strips or coated full or partial conductive areas.
dadurch gekennzeichnet, dass
der Körper (1) ein Hohlkörper ist, in oder auf dem zu seiner Beheizung mindestens eine modulare Anordnung von flexibel ausgeführten, elektrisch betriebenen Heizbahnen (2-5) vorhanden ist.Heated body according to one of the above claims,
characterized in that
the body (1) is a hollow body, in or on which at least one modular arrangement of flexible, electrically operated heating tracks (2-5) is present for its heating.
dadurch gekennzeichnet, dass
die Oberfläche des beheizbaren Körpers (1) zylindrisch ist oder beliebige Oberflächengeometrien, wie Vertiefungen, Muster, Logos, Negativ-Formen von Lebensmittelprodukten oder Kunststoffteilen aufweist.Heated body according to one of the above claims,
characterized in that
the surface of the heatable body (1) is cylindrical or has any surface geometries, such as depressions, patterns, logos, negative shapes of food products or plastic parts.
dadurch gekennzeichnet, dass
der Körper (1) ein rotierend gelagerter Kreiszylinder aus Guss, Stahl, Kunststoff oder aus einem Verbundstoff ist, an dessen beheizter Oberfläche bahnförmige, entlang der Oberfläche geführte, Feuchtigkeit enthaltende Materialien getrocknet werden.Heated body according to one of the above claims,
characterized in that
the body (1) is a rotating circular cylinder made of cast iron, steel, plastic or a composite material, on the heated surface of which web-shaped materials containing moisture are dried along the surface.
dadurch gekennzeichnet, dass
die Heizbahnen (2-5) und die zur Herstellung der elektrisch leitenden Verbindungen zwischen den Heizbahnen (2-5) und der elektronischen Steuerung (7) verwendeten Elektroleitungen (6) mit einem elektrisch isolierenden Kunststoff laminiert sind, der jedoch wärmeleitend ist.Heated body according to one of the above claims,
characterized in that
the heating tracks (2-5) and the electrical cables (6) used to produce the electrically conductive connections between the heating tracks (2-5) and the electronic control (7) are laminated with an electrically insulating plastic, which is, however, thermally conductive.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102022001182 | 2022-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4258813A1 true EP4258813A1 (en) | 2023-10-11 |
Family
ID=83282415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23160104.8A Pending EP4258813A1 (en) | 2022-04-07 | 2023-03-06 | Heatable body |
Country Status (2)
Country | Link |
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EP (1) | EP4258813A1 (en) |
DE (2) | DE102022119741A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE886182C (en) | 1951-07-22 | 1953-08-13 | Wilhelm Hilzinger Fa | Electrically heated drying cylinder or the like. |
DE1757215B1 (en) | 1968-04-11 | 1972-03-09 | Wilhelm Haupt | Carrier fabric for a heating device for the electrical heating of surfaces |
DE2209793A1 (en) | 1971-03-05 | 1972-09-14 | Pfister, Rimle + Co , St Gallen (Schweiz) | Floor heating, especially for a long, relatively narrow heating track, such as a runway, street, bridge, etc. |
DE3907557A1 (en) | 1989-03-09 | 1990-09-13 | Martin Erwin | Heated blanket having an intersection-free wire arrangement, combined with an infrared-radiation insert |
US20090277897A1 (en) * | 2008-05-07 | 2009-11-12 | Nanocomp Technologies, Inc. | Nanostructure-based heating devices and methods of use |
US20170064774A1 (en) * | 2014-05-13 | 2017-03-02 | Korea Electronics Technology Institute | Heating paste composition, and sheet heating element, heating roller, heating unit and heating module using same |
WO2019002181A1 (en) * | 2017-06-27 | 2019-01-03 | Elringklinger Ag | Heating system and process for manufacturing same |
EP3443810A1 (en) * | 2016-04-15 | 2019-02-20 | FGV Cambridge Nanosystems Limited | Heater elements, heat exchangers and heater element arrays |
DE202019104379U1 (en) * | 2019-08-08 | 2019-08-14 | Future Carbon Gmbh | Heated glass fiber fleece |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20308113U1 (en) | 2003-05-23 | 2004-07-01 | Activline Gmbh & Co. Kg | A method for manufacturing flexible surface heating elements for motor vehicle seats has the usual electrical conducting mat connected to the voltage supply through tubular conductive leads |
-
2022
- 2022-08-05 DE DE102022119741.7A patent/DE102022119741A1/en active Pending
- 2022-08-05 DE DE202022104473.2U patent/DE202022104473U1/en active Active
-
2023
- 2023-03-06 EP EP23160104.8A patent/EP4258813A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE886182C (en) | 1951-07-22 | 1953-08-13 | Wilhelm Hilzinger Fa | Electrically heated drying cylinder or the like. |
DE1757215B1 (en) | 1968-04-11 | 1972-03-09 | Wilhelm Haupt | Carrier fabric for a heating device for the electrical heating of surfaces |
DE2209793A1 (en) | 1971-03-05 | 1972-09-14 | Pfister, Rimle + Co , St Gallen (Schweiz) | Floor heating, especially for a long, relatively narrow heating track, such as a runway, street, bridge, etc. |
DE3907557A1 (en) | 1989-03-09 | 1990-09-13 | Martin Erwin | Heated blanket having an intersection-free wire arrangement, combined with an infrared-radiation insert |
US20090277897A1 (en) * | 2008-05-07 | 2009-11-12 | Nanocomp Technologies, Inc. | Nanostructure-based heating devices and methods of use |
US20170064774A1 (en) * | 2014-05-13 | 2017-03-02 | Korea Electronics Technology Institute | Heating paste composition, and sheet heating element, heating roller, heating unit and heating module using same |
EP3443810A1 (en) * | 2016-04-15 | 2019-02-20 | FGV Cambridge Nanosystems Limited | Heater elements, heat exchangers and heater element arrays |
WO2019002181A1 (en) * | 2017-06-27 | 2019-01-03 | Elringklinger Ag | Heating system and process for manufacturing same |
DE202019104379U1 (en) * | 2019-08-08 | 2019-08-14 | Future Carbon Gmbh | Heated glass fiber fleece |
Also Published As
Publication number | Publication date |
---|---|
DE102022119741A1 (en) | 2023-10-12 |
DE202022104473U1 (en) | 2022-08-30 |
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