EP1305554A1 - Antenna radiation heater for heating a material by using resonance - Google Patents

Antenna radiation heater for heating a material by using resonance

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Publication number
EP1305554A1
EP1305554A1 EP01957819A EP01957819A EP1305554A1 EP 1305554 A1 EP1305554 A1 EP 1305554A1 EP 01957819 A EP01957819 A EP 01957819A EP 01957819 A EP01957819 A EP 01957819A EP 1305554 A1 EP1305554 A1 EP 1305554A1
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EP
European Patent Office
Prior art keywords
radiation
antenna
coating
weight
radiation coating
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
Application number
EP01957819A
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German (de)
French (fr)
Other versions
EP1305554B1 (en
Inventor
Helmut Reichelt
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Moletherm Holding AG
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Moletherm Holding AG
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Publication date
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Publication of EP1305554A1 publication Critical patent/EP1305554A1/en
Application granted granted Critical
Publication of EP1305554B1 publication Critical patent/EP1305554B1/en
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Classifications

    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/72—Radiators or antennas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems

Definitions

  • the invention relates to an antenna radiation heater for heating a material by means of resonance according to the preamble of claim 1.
  • a known generic antenna radiation heater for heating a material by means of resonance comprises several surface antenna elements, each consisting of a carrier surface material and a radiation coating applied thereon, which is delimited by two spaced parallel electrical conductors with electrical contact as antenna limiters. With this radiation coating, electromagnetic high-frequency radiation can be emitted.
  • the antenna radiation heater comprises a harmonic generator which is coupled to the two electrical conductors of a surface antenna element in order to excite the radiation coating in order to emit an oscillation spectrum in the range of molecular natural oscillation frequencies of the material to be heated.
  • a suitable radiation coating is specified there, which generates a suitable radiation spectrum in the case of the excitation described.
  • a multiple arrangement of surface antenna elements is shown in such a way that twelve rectangular surface antenna elements - four each next to one another and three one above the other - are arranged at short distances and electrically connected in parallel in a corner of the room.
  • the drive takes place by means of the harmonic generator.
  • the surface antenna elements should be of relatively large area, the individual surfaces not being able to be enlarged as desired, since the heating effect is then reduced again. It is therefore expedient to use the specified or a similar multiple arrangement of surface antenna elements.
  • the electrical supply lines are controlled in the low-voltage range, e.g. B. with 24 volts.
  • the operationally relatively cool radiation coating of a surface antenna element can therefore be touched without the risk of an electric shock, i. H. a touch is completely uncritical.
  • considerable potential differences can occur between the surface antenna elements of a multiple arrangement. In the case of parallel connections, these are likely to be caused by phase shifts in the vibration spectra of the individual planar antenna elements.
  • there is a risk of an electric shock if two or more surface antenna elements are touched at the same time. Such an electric shock is regularly not dangerous and harmful to health, but can be perceived as extremely unpleasant.
  • the object of the invention is therefore to develop a generic antenna radiation heater in such a way that the risk of electric shock no longer exists.
  • the radiation coating is applied on one side to the carrier surface material and forms a front of the element facing the material to be heated.
  • a contact protection layer is also applied to the radiation coating.
  • the material of such a contact protection layer is to be selected such that on the one hand the radiation coating is electrically insulated against contact and on the other hand the radiation spectrum can be emitted without or at least with only a slight damping.
  • the two properties of the radiation coating as an electrical insulating layer to avoid electric shocks when two elements come into contact and for radiation-free or radiation-damping radiation of the vibration spectrum are essential in this combination.
  • the carrier surface material as the back of the element should preferably also have electrical insulation properties, but in contrast to the contact protection layer dampen the radiation of the vibration spectrum completely or at least very strongly. This ensures that the radiation energy as a whole or at least in large part is emitted via the front of the element, which leads to a particularly energy-saving heating of the material.
  • a suitable contact layer according to claim 3, which has the above-mentioned properties, can consist of an aqueous, finely dispersed, plasticizer-free, medium-viscosity copolymer dispersion of acrylic and methacrylic acid esters, which preferably has a solids content of about 50% and an average particle size of 0.1 ⁇ m.
  • a suitable contact layer according to claim 4 can consist of an aqueous, protective colloid-containing, medium-viscosity polymer dispersion of vinyl acetate, vinyl versatic acid and di-n-butyl maize acid, which preferably has a solids content of about 50-55% and a medium re particle size of about 0.2 microns.
  • the coating material of the radiation coating can be selected in a known and proven manner according to the composition specified in claim 5.
  • the sulphated oil indicated preferably consists of sulphated castor oil and the phenols indicated are advantageously carbonized phenols produced by cracking or benzisothiazolinone is used.
  • An aromatic-based and / or alcohol-based and / or ester-based and / or ketone-based solvent has proven useful as a diluent, while an inorganic and / or organic, monomeric and / or polymeric substance is particularly suitable as a dispersant.
  • Insulating carbon black is suitable as an insulating agent and the coating material should contain a thixotropic agent.
  • the radiation coating and the contact protection layer can be applied and produced using methods known per se.
  • the radiation coating and / or after it has solidified the contact protection layer is produced by knife coating.
  • the molar proportions of casein or, where appropriate, of polyacrylates, in conjunction with a doctor blade process result in radiation attenuation towards the rear of the element, in particular when the radiation coating is applied to paper material.
  • the contact protection layer is also expediently produced by doctor blade application, layer thicknesses of approximately 5-10 ⁇ m being regularly sufficient for protection against contact and thereby not yet causing an unfavorable attenuation of the radiation on the front side of the element.
  • the harmonic generator as part of a control / regulating device, comprises an electrical component which, when triggered by a trigger oscillation, has a steep current. Has rising speed corresponding to a steep rising edge and is therefore suitable for generating a high harmonic content.
  • the electrical module can be, for example, a triac or a double MOSFET with the associated, known electronic control components.
  • the resonance arrangement takes the required energy from the connected electrical network as required, the heating effect being varied by changing the amplitudes and / or the frequency of the control vibrations can be at least partially controlled and / or regulated.
  • the electrical conductors in a manner known per se as copper foil strips aligned in parallel.
  • a known covering of copper foil strips as an antenna limiter with an electrical insulating layer (DD 208 029) can also be carried out.
  • the electrical contact for the radiation coating is designed as a capacitive and / or inductive coupling.
  • the specified protection against accidental contact is particularly important if, according to claim 9, the several antenna surface elements are arranged in mutual range, are electrically connected in parallel and can be excited by means of a harmonic generator. Even if several harmonic generators are used for the antenna surface elements, there is a risk of an electric shock due to the potential differences mentioned at the outset, so that protection against contact with an electrical insulation layer is also essential here.
  • FIG. 1 is a perspective view of an antenna radiation heater for heating a Mate ⁇ e as space heating
  • FIG. 2 is a schematic cross-sectional view along line A-A of FIG. 1.
  • the antenna radiation heater 2 consists here, for example, of a combination of twelve surface antenna elements 3, each of which is symmetrically grouped in horizontal groups of four surface antenna elements 3 in the corner 1 of the room.
  • the surface antenna elements 3 are designed as rectangular surface elements and are connected to one another at their narrow sides in connection points 4 as parallel connections. In each case three vertical, edge-side surface antenna elements 3 are connected by connecting cables 5 via a junction box 6 and to the other surface antenna elements 3 or their electrical conductors 14, 15 as copper foil strips via the parallel connections 4.
  • a control unit 7 contains, in particular, a harmonic generator, which in turn comprises an electrical component which, when actuated with an actuating oscillation, has a steep current rise rate corresponding to a steep rising edge and is therefore suitable for generating a high harmonic component.
  • a harmonic generator which in turn comprises an electrical component which, when actuated with an actuating oscillation, has a steep current rise rate corresponding to a steep rising edge and is therefore suitable for generating a high harmonic component.
  • Such an electrical module can, for. B. be a triac or a double-MOSFET, which has the known electronic control components.
  • the control unit 7 is connected via the junction box 6 on the one hand to the surface antenna elements 3 and on the other hand is fed via a transformer 8 via a mains connection 9.
  • FIG. 2 which is a schematic
  • the surface antenna elements 3 each consist of a carrier surface material 11 and a radiation coating 10 applied thereon, the radiation coating 10 being applied on one side to the carrier surface material 11 and one of the material to be heated, e.g. B. a person in the room, facing element front forms.
  • a radiation protection layer 10 has a preferably relatively thin contact protection layer 12 applied to it, which on the one hand electrically insulates the radiation coating 10 from contact and on the other hand the radiation of the oscillation spectrum without or at least only slightly Damping enables.
  • the carrier surface material 11 electrically isolates the radiation coating 10 from contact as the back of the element and, on the other hand, prevents the radiation spectrum from being radiated entirely or at least with considerable damping.
  • the contact protection layer 12 here consists of an aqueous, finely dispersed, plasticizer-free, medium-viscosity copolymer dispersion of acrylic and methacrylic acid esters.
  • the arrows 13 also show the radiation of the oscillation spectrum.
  • the radiation coating 10 and, after it has solidified, the contact protection layer 12 can each be doctored onto the carrier surface material 11.
  • the electrical contact from the electrical conductors 14, 15 designed as parallel aligned copper foil strips to the radiation coating 10 is achieved via a capacitive and / or inductive coupling, the radiation coating 10 being below or above the electrical conductors 14, 15 or, alternatively, embedded in the radiation coating 10, which is not shown here, however.
  • the antenna radiation heater 2 With such a construction of the antenna radiation heater 2 from a plurality of surface antenna elements 3, which are arranged in a mutual range, the risk of an electric shock when two or more surface antenna elements 3 are touched by a technician is completely eliminated.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Central Heating Systems (AREA)
  • Details Of Aerials (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

Disclosed is an antenna radiation heater (2) to heat material using molecular resonance. A plurality of surface antenna elements (3), each having a carrier surface material (11) and a radiation coating (10) applied thereon are connected by two spaced apart electrical conductors (14, 15) in parallel, with electrical contacts as antenna limiters and with which high-frequency electromagnetic radiation can be emitted. The antenna (2) includes a harmonic generator, coupled to electrical conductors (14, 15) of element (3) for excitation of the coating (10) for emitting an oscillation spectrum within the range of natural molecular frequencies of the material being heated. The radiation coating (10) is unilaterally applied to the carrier material (11) and forms an element front facing the material being heated. A contact protection layer (12) is applied to the radiation coating (10) which electrically insulates the radiation coating (10) against contact and also permits the emission of the oscillation spectrum without or at most with only minor attenuation.

Description

Beschreibung description
Antennenstrahlungs-Heizung zur Erwärmung einer Materie mittels ResonanzAntenna radiation heating for heating a material by means of resonance
Die Erfindung betrifft eine Antennenstrahlungs-Heizung zur Erwärmung einer Materie mittels Resonanz nach dem Oberbegriff des Anspruchs 1.The invention relates to an antenna radiation heater for heating a material by means of resonance according to the preamble of claim 1.
Eine bekannte gattungsgemäße Antennenstrahlungs-Heizung zur Erwärmung einer Materie mittels Resonanz (WO00/25552) umfasst mehrere Flächenantennenelemente, die jeweils aus einem Trägerflächenmaterial und einer darauf aufgebrachten Strahlungsbeschichtung bestehen, welche durch zwei beabstandete parallele elektrische Leiter mit elektrischem Kontakt als Antennenbegrenzer begrenzt ist. Mit dieser Strahlungsbeschichtung ist elektromagnetische hochfrequente Strahlung aussendbar. Zudem umfasst die Antennenstrahlungs- heizung einen Oberwellengenerator, der für eine Anregung der Strahlungsbeschichtung zur Abstrahlung eines Schwingungsspektrums im Bereich von molekularen Eigenschwingungsfrequenzen der zu erwärmenden Materie an die beiden elektrischen Leiter eines Flächenantennenelements angekoppelt ist.A known generic antenna radiation heater for heating a material by means of resonance (WO00 / 25552) comprises several surface antenna elements, each consisting of a carrier surface material and a radiation coating applied thereon, which is delimited by two spaced parallel electrical conductors with electrical contact as antenna limiters. With this radiation coating, electromagnetic high-frequency radiation can be emitted. In addition, the antenna radiation heater comprises a harmonic generator which is coupled to the two electrical conductors of a surface antenna element in order to excite the radiation coating in order to emit an oscillation spectrum in the range of molecular natural oscillation frequencies of the material to be heated.
Zudem ist dort eine geeignete Strahlungsbeschichtung angegeben, die bei der beschriebenen Anregung ein geeignetes Strahlungsspektrum erzeugt.In addition, a suitable radiation coating is specified there, which generates a suitable radiation spectrum in the case of the excitation described.
Weiter ist eine Mehrfachanordnung von Flächenantennenelementen gezeigt dergestalt, dass in einer Raumecke zwölf Rechteck-Flächenantennenelemente - jeweils vier nebeneinander und drei übereinander - mit geringen Abständen angeordnet und elektrisch parallel geschaltet sind. Der Antrieb erfolgt dabei mittels des Oberwellengenerators.Furthermore, a multiple arrangement of surface antenna elements is shown in such a way that twelve rectangular surface antenna elements - four each next to one another and three one above the other - are arranged at short distances and electrically connected in parallel in a corner of the room. The drive takes place by means of the harmonic generator.
Es hat sich gezeigt, dass für eine effektive Raumheizfunktion die Flächenantennenelemente relativ großflächig sein sollen, wobei die Einzelflächen nicht beliebig vergrößerbar sind, da dann der Heizeffekt wieder reduziert wird. Es ist daher zweckmäßig, die angegebene oder eine ähnliche Mehrfachanordnung von Flächenantennenelementen zu verwenden.It has been shown that for an effective room heating function, the surface antenna elements should be of relatively large area, the individual surfaces not being able to be enlarged as desired, since the heating effect is then reduced again. It is therefore expedient to use the specified or a similar multiple arrangement of surface antenna elements.
Die Ansteuerung der elektrischen Zuleitungen erfolgt im Niederspannungsbe- reich, z. B. mit 24 Volt. Die betriebsmäßig relativ kühle Strahlungsbeschichtung eines Flächenantennenelements kann daher ohne die Gefahr eines elektrischen Schlages berührt werden, d. h. eine Berührung ist völlig unkritisch. Überraschend wurde jedoch festgestellt, dass zwischen den Flächenantennenelementen einer Mehrfachanordnung erhebliche Potentialunterschiede auftreten können. Diese dürften bei Parallelschaltungen durch Phasenverschiebungen der Schwingungsspektren der einzelnen Flächenantennenelemente bedingt sein. Für den Fall, dass mehrere Flächenantennenelemente in der Reichweite eines Monteurs oder eines Heizungsnutzers liegen besteht somit die Gefahr eines elektrischen Schlages, wenn gleichzeitig zwei oder mehrere Flächenantennenelemente berührt werden. Ein solcher elektrischer Schlag ist zwar regelmäßig nicht gefährlich und gesundheitsschädigend, kann jedoch als äußerst unangenehm empfunden werden.The electrical supply lines are controlled in the low-voltage range, e.g. B. with 24 volts. The operationally relatively cool radiation coating of a surface antenna element can therefore be touched without the risk of an electric shock, i. H. a touch is completely uncritical. However, it was surprisingly found that considerable potential differences can occur between the surface antenna elements of a multiple arrangement. In the case of parallel connections, these are likely to be caused by phase shifts in the vibration spectra of the individual planar antenna elements. In the event that several surface antenna elements are within the reach of a fitter or a heating user, there is a risk of an electric shock if two or more surface antenna elements are touched at the same time. Such an electric shock is regularly not dangerous and harmful to health, but can be perceived as extremely unpleasant.
Dieses Problem ist im Stand der Technik bisher nicht erkannt und auch nicht beschrieben worden.This problem has not been recognized in the prior art and has not been described.
Aufgabe der Erfindung ist es daher, eine gattungsgemäße Antennenstrahlungs-Heizung so weiterzubilden, dass die Gefahr elektrischer Schläge nicht mehr gegeben ist.The object of the invention is therefore to develop a generic antenna radiation heater in such a way that the risk of electric shock no longer exists.
Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 gelöst. Gemäß Anspruch 1 ist die Strahlungsbeschichtung einseitig auf das Trägerflächenmaterial aufgebracht und bildet eine der zu erwärmenden Materie zugewandte Elementvorderseite. Weiter ist auf die Strahlungsbeschichtung eine Berührungsschutzschicht aufgebracht. Das Material einer solchen Berüh- rungsschutzschicht ist so zu wählen, dass einerseits die Strahlungsbeschichtung gegen Berührung elektrisch isoliert ist und andererseits die Abstrahlung des Schwingungsspektrums ohne oder wenigstens mit nur geringer Dämpfung möglich ist. Die beiden Eigenschaften der Strahlungsbeschichtung als elektrische Isolierschicht zur Vermeidung elektrischer Schläge bei der Berührung zweier Elemente und für eine strahlungsdämpfungsfreie bzw. strahiungs- dämpfungsarme Abstrahlung des Schwingungsspektrums sind in dieser Kombination wesentlich.This object is achieved with the features of claim 1. According to claim 1, the radiation coating is applied on one side to the carrier surface material and forms a front of the element facing the material to be heated. A contact protection layer is also applied to the radiation coating. The material of such a contact protection layer is to be selected such that on the one hand the radiation coating is electrically insulated against contact and on the other hand the radiation spectrum can be emitted without or at least with only a slight damping. The two properties of the radiation coating as an electrical insulating layer to avoid electric shocks when two elements come into contact and for radiation-free or radiation-damping radiation of the vibration spectrum are essential in this combination.
Nach Anspruch 2 soll zwar bevorzugt das Trägerflächenmaterial als Element- rückseite ebenfalls elektrische Isolationseigenschaften aufweisen, jedoch im Gegensatz zur Berührungsschutzschicht die Abstrahlung des Schwingungsspektrums ganz oder zumindest sehr stark dämpfen. Damit wird erreicht, dass die Strahlungsenergie insgesamt oder zumindest zu einem Großteil über die Elementvorderseite abgestrahlt wird, was zu einer besonders energiesparen- den Erwärmung der Materie führt.According to claim 2, the carrier surface material as the back of the element should preferably also have electrical insulation properties, but in contrast to the contact protection layer dampen the radiation of the vibration spectrum completely or at least very strongly. This ensures that the radiation energy as a whole or at least in large part is emitted via the front of the element, which leads to a particularly energy-saving heating of the material.
Eine geeignete Berührungsschicht nach Anspruch 3, die die vorstehend genannten Eigenschaften aufweist, kann aus einer wässrigen, feindispersen, weichmacherfreien, mittelviskosen Copolymer-Dispersion aus Acryl- und Me- thacrylsäureestern bestehen, die vorzugsweise einen Festkörpergehalt von ca. 50 % und eine mittlere Teilchengröße von ca. 0,1 μm aufweist.A suitable contact layer according to claim 3, which has the above-mentioned properties, can consist of an aqueous, finely dispersed, plasticizer-free, medium-viscosity copolymer dispersion of acrylic and methacrylic acid esters, which preferably has a solids content of about 50% and an average particle size of 0.1 μm.
Alternativ dazu kann eine geeignete Berührungsschicht nach Anspruch 4 aus einer wässrigen, schutzkolloidhaltigen, mittelviskosen Polymer-Dispersion aus Vinylacetat, Versaticsäure-Vinylester und Maieinsäuredi-n-Butyiester bestehen, die vorzugsweise einen Festkörpergehalt von ca. 50-55 % und eine mittle- re Teilchengröße von ca. 0,2 μm aufweist.Alternatively, a suitable contact layer according to claim 4 can consist of an aqueous, protective colloid-containing, medium-viscosity polymer dispersion of vinyl acetate, vinyl versatic acid and di-n-butyl maize acid, which preferably has a solids content of about 50-55% and a medium re particle size of about 0.2 microns.
Das Beschichtungsmaterial der Strahlungsbeschichtung kann in an sich bekannter und bewährter Weise entsprechend der im Anspruch 5 angegebenen Zusammensetzung gewählt werden. Das angegebene sulforierte Öl besteht dabei bevorzugt aus sulfatiertem Rizinusöl und die angegebenen Phenole sind vorteilhaft karbonisierte, durch Cracken hergestellte Phenole oder es wird Benzisothiazolinon verwendet. Als Verdünnungsmittel hat sich ein Lösungsmittel auf Aromatenbasis und/oder Alkoholbasis und/oder Esterbasis und/oder Ketonbasis bewährt, während als Dispergiermittel eine anorganische und/oder organische, monomere und/oder polymere Substanz besonders geeignet ist. Als Isoliermittel ist isolierender Russ geeignet und das Beschichtungsmaterial soll ein Thixotropierungsmittel enthalten.The coating material of the radiation coating can be selected in a known and proven manner according to the composition specified in claim 5. The sulphated oil indicated preferably consists of sulphated castor oil and the phenols indicated are advantageously carbonized phenols produced by cracking or benzisothiazolinone is used. An aromatic-based and / or alcohol-based and / or ester-based and / or ketone-based solvent has proven useful as a diluent, while an inorganic and / or organic, monomeric and / or polymeric substance is particularly suitable as a dispersant. Insulating carbon black is suitable as an insulating agent and the coating material should contain a thixotropic agent.
Die Strahlungsbeschichtung und die Berührungsschutzschicht können mit an sich bekannten Verfahren aufgebracht und hergestellt werden. Besonders bevorzugt werden nach Anspruch 6 die Strahlungsbeschichtung und/oder nach deren Verfestigung die Berührungsschutzschicht durch Aufrakeln hergestellt. Insbesondere bewirken die Stoffmengenanteile von Casein oder ggf. von Poly- acrylaten in Verbindung mit einem Aufrakelverfahren eine Strahlungsdämpfung zur Elementrückseite hin, insbesondere wenn die Strahlungsbeschichtung auf Papiermaterial aufgebracht wird. Auch die Berührungsschutzschicht wird zweckmäßig durch Aufrakeln hergestellt, wobei Schichtdicken von ca. 5-10 μm für einen Berührungsschutz regelmäßig ausreichend sind und dabei noch keine ungünstige Dämpfung der Abstrahlung an der Elementvorderseite bewirken.The radiation coating and the contact protection layer can be applied and produced using methods known per se. Particularly preferably, the radiation coating and / or after it has solidified, the contact protection layer is produced by knife coating. In particular, the molar proportions of casein or, where appropriate, of polyacrylates, in conjunction with a doctor blade process, result in radiation attenuation towards the rear of the element, in particular when the radiation coating is applied to paper material. The contact protection layer is also expediently produced by doctor blade application, layer thicknesses of approximately 5-10 μm being regularly sufficient for protection against contact and thereby not yet causing an unfavorable attenuation of the radiation on the front side of the element.
In an sich bekannter Weise ist eine geeignete Anregung der Strahlungsbeschichtung nach Anspruch 7 dergestalt möglich, dass der Oberwellengenerator als Bestandteil eines Steuer-/Regelgeräts einen elektrischen Baustein umfasst, welcher bei Ansteuerung mit einer Ansteuerschwingung eine steile Stroman- Stiegsgeschwindigkeit entsprechend einer steilen Anstiegsflanke aufweist und damit zur Erzeugung eines hohen Oberwellenanteils geeignet ist. Der elektrische Baustein kann beispielsweise ein Triac oder ein Doppel-MOSFET sein mit den zugeordneten, an sich bekannten elektronischen Ansteuerkomponen- ten. Die Resonanzanordnung nimmt sich die benötigte Energie je nach Bedarf aus dem angeschlossenen elektrischen Netz, wobei die Heizwirkung durch Veränderung der Amplituden und/oder der Frequenz der Ansteuerschwingungen zumindest teilweise steuerbar und/oder regelbar ist.In a manner known per se, a suitable excitation of the radiation coating is possible in such a way that the harmonic generator, as part of a control / regulating device, comprises an electrical component which, when triggered by a trigger oscillation, has a steep current. Has rising speed corresponding to a steep rising edge and is therefore suitable for generating a high harmonic content. The electrical module can be, for example, a triac or a double MOSFET with the associated, known electronic control components. The resonance arrangement takes the required energy from the connected electrical network as required, the heating effect being varied by changing the amplitudes and / or the frequency of the control vibrations can be at least partially controlled and / or regulated.
Nach Anspruch 8 ist es zweckmäßig, die elektrischen Leiter in an sich bekannter Weise als parallel ausgerichtete Kupferfolienbänder auszubilden. Eine an sich bekannte Abdeckung von Kupferfolienbändern als Antennenbegrenzer mit einer elektrischen Isolierschicht (DD 208 029) kann ebenfalls durchgeführt werden. Der elektrische Kontakt zur Strahlungbeschichtung ist als kapazitive und/oder induktive Ankopplung ausgebildet.According to claim 8, it is expedient to design the electrical conductors in a manner known per se as copper foil strips aligned in parallel. A known covering of copper foil strips as an antenna limiter with an electrical insulating layer (DD 208 029) can also be carried out. The electrical contact for the radiation coating is designed as a capacitive and / or inductive coupling.
Besonders wesentlich ist der angegebene Berührungsschutz, wenn nach Anspruch 9 die mehreren Antennenflächenelemente in gegenseitiger Reichweite angeordnet, elektrisch parallelgeschaltet und mittels eines Oberwellengenera- tors anregbar sind. Auch dann, wenn mehrere Oberwellengeneratoren für die Antennenflächenelemente verwendet sind, besteht die Gefahr eines elektrischen Schlages durch die eingangs erwähnten Potentialdifferenzen, so dass auch hier ein Berührungsschutz mit einer elektrischen Isolationsschicht wesentlich ist.The specified protection against accidental contact is particularly important if, according to claim 9, the several antenna surface elements are arranged in mutual range, are electrically connected in parallel and can be excited by means of a harmonic generator. Even if several harmonic generators are used for the antenna surface elements, there is a risk of an electric shock due to the potential differences mentioned at the outset, so that protection against contact with an electrical insulation layer is also essential here.
Eine kompakte, optisch ansprechende Anordnung ergibt sich in an sich bekannter Weise nach Anspruch 10, wenn alle Antennenflächenelemente eine gleiche rechtwinklige Fläche aufweisen und in einer symmetrischen Anordnung mit geringen Zuleitungslängen parallel geschaltet sind. Anhand einer Zeichnung wird die Erfindung näher erläutert. Es zeigen:A compact, optically appealing arrangement results in a known manner according to claim 10, if all antenna surface elements have the same rectangular area and are connected in parallel in a symmetrical arrangement with short lead lengths. The invention is explained in more detail with reference to a drawing. Show it:
Fig. 1 eine perspektivische Darstellung einer Antennenstrahlungs-Heizung zur Erwärmung einer Mateπe als Raumheizung, und1 is a perspective view of an antenna radiation heater for heating a Mateπe as space heating, and
Fig. 2 eine schematische Querschnittsansicht entlang der Linie A-A der Fig. 1.FIG. 2 is a schematic cross-sectional view along line A-A of FIG. 1.
In der Fig. 1 ist eine perspektivische Darstellung einer Raumecke 1 gezeigt, in der eine Antennenstrahlungs-Heizung 2 installiert ist. Die Antennenstrahlungs- Heizung 2 besteht hier beispielhaft aus einer Kombination von zwölf Flächen- antennenelementen 3, die jeweils in horizontalen Gruppen von vier Flächen- antennenelementen 3 in der Raumecke 1 symmetrisch gruppiert sind.1 shows a perspective view of a corner of the room 1 in which an antenna radiation heater 2 is installed. The antenna radiation heater 2 consists here, for example, of a combination of twelve surface antenna elements 3, each of which is symmetrically grouped in horizontal groups of four surface antenna elements 3 in the corner 1 of the room.
Dabei sind die Flächenantennenelemente 3 als rechtwinklige Flächenelemente ausgebildet und jeweils an ihren Schmalseiten miteinander in Verbindungspunkten 4 als Parallelverbindungen verbunden. Jeweils drei vertikale, randsei- tige Flächenantennenelemente 3 sind durch Verbindungskabel 5 über eine Verteilerdose 6 und mit den anderen Flächenantennenelementen 3 bzw. deren elektrischen Leitern 14, 15 als Kupferfolienbänder über die Parallelverbindun- gen 4 verbunden.The surface antenna elements 3 are designed as rectangular surface elements and are connected to one another at their narrow sides in connection points 4 as parallel connections. In each case three vertical, edge-side surface antenna elements 3 are connected by connecting cables 5 via a junction box 6 and to the other surface antenna elements 3 or their electrical conductors 14, 15 as copper foil strips via the parallel connections 4.
Ein Steuergerät 7 enthält insbesondere einen Oberwellengenerator, der wiederum einen elektrischen Baustein umfasst, welcher bei Ansteuerung mit einer Ansteuerschwingung eine steile Stromanstiegsgeschwindigkeit entsprechend einer steilen Anstiegsflanke aufweist und damit zur Erzeugung eines hohen Oberwellenanteils geeignet ist. Ein derartiger elektrischer Baustein kann z. B. ein Triac oder ein Doppel-MOSFET sein, der die an sich bekannten elektronischen Ansteuerkomponenten aufweist. Das Steuergerät 7 ist über die Verteilerdose 6 einerseits mit den Flächenantennenelementen 3 verbunden und wird andererseits über einen Trafo 8 über einen Netzanschluss 9 gespeist. Wie dies insbesondere aus der Fig. 2 ersichtlich ist, die eine schematischeA control unit 7 contains, in particular, a harmonic generator, which in turn comprises an electrical component which, when actuated with an actuating oscillation, has a steep current rise rate corresponding to a steep rising edge and is therefore suitable for generating a high harmonic component. Such an electrical module can, for. B. be a triac or a double-MOSFET, which has the known electronic control components. The control unit 7 is connected via the junction box 6 on the one hand to the surface antenna elements 3 and on the other hand is fed via a transformer 8 via a mains connection 9. As can be seen in particular from FIG. 2, which is a schematic
Teilschnittansicht entlang der Linie A-A der Fig. 1 zeigt, bestehen die Flächenantennenelemente 3 jeweils aus einem Trägerflächenmaterial 11 und einer darauf aufgebrachten Strahlungsbeschichtung 10, wobei die Strahlungsbe- Schichtung 10 einseitig auf das Trägerflächenmaterial 11 aufgebracht ist und eine der zu erwärmenden Materie, z. B. eine Person im Raum, zugewandte Elementvorderseite bildet. Wie dies der Fig. 2 zudem weiter zu entnehmen ist, ist auf die Strahlungsbeschichtung 10 eine dieser gegenüber vorzugsweise relativ dünne Berührungsschutzschicht 12 aufgebracht, die die Strahlungsbe- Schichtung 10 einerseits gegen Berührung elektrisch isoliert und andererseits die Abstrahlung des Schwingungsspektrums ohne oder wenigstens mit nur geringer Dämpfung ermöglicht.1 shows, the surface antenna elements 3 each consist of a carrier surface material 11 and a radiation coating 10 applied thereon, the radiation coating 10 being applied on one side to the carrier surface material 11 and one of the material to be heated, e.g. B. a person in the room, facing element front forms. As can also be seen in FIG. 2, a radiation protection layer 10 has a preferably relatively thin contact protection layer 12 applied to it, which on the one hand electrically insulates the radiation coating 10 from contact and on the other hand the radiation of the oscillation spectrum without or at least only slightly Damping enables.
Dem gegenüber isoliert das Trägerfiächenmaterial 11 als Elementrückseite einerseits die Strahlungsbeschichtung 10 gegenüber Berührung elektrisch und verhindert andererseits die Abstrahlung des Schwingungsspektrums ganz oder wenigstens mit erheblicher Dämpfung.In contrast, the carrier surface material 11, on the one hand, electrically isolates the radiation coating 10 from contact as the back of the element and, on the other hand, prevents the radiation spectrum from being radiated entirely or at least with considerable damping.
Beispielhaft besteht die Berührungsschutzschicht 12 hier aus einer wässrigen, feindispersen, weichmacherfreien, mittelviskosen Copolymer-Dispersion aus Acryl- und Metacrylsäureestem.For example, the contact protection layer 12 here consists of an aqueous, finely dispersed, plasticizer-free, medium-viscosity copolymer dispersion of acrylic and methacrylic acid esters.
In der Fig. 2 ist zudem mit den Pfeilen 13 die Abstrahlung des Schwingungsspektrums dargestellt.In FIG. 2 the arrows 13 also show the radiation of the oscillation spectrum.
Die Strahlungsbeschichtung 10 und nach deren Verfestigung auch die Berührungsschutzschicht 12 können jeweils auf das Trägerflächenmaterial 11 aufge- rakelt werden.The radiation coating 10 and, after it has solidified, the contact protection layer 12 can each be doctored onto the carrier surface material 11.
Der elektrische Kontakt von den als parallel ausgerichteten Kupferfolienbändern ausgebildeten elektrischen Leitern 14, 15 zur Strahlungsbeschichtung 10 wird über eine kapazitive und/oder induktive Ankopplung erreicht, wobei die Strahlungsbeschichtung 10 unter oder über den elektrischen Leitern 14, 15 liegt bzw. - alternativ dazu - diese in die Strahlungsbeschichtung 10 eingebettet sind, was hier allerdings nicht dargestellt ist.The electrical contact from the electrical conductors 14, 15 designed as parallel aligned copper foil strips to the radiation coating 10 is achieved via a capacitive and / or inductive coupling, the radiation coating 10 being below or above the electrical conductors 14, 15 or, alternatively, embedded in the radiation coating 10, which is not shown here, however.
Mit einem derartigen Aufbau der Antennenstrahlungs-Heizung 2 aus einer Mehrzahl von Flächenantennenelementen 3, die in gegenseitiger Reichweite angeordnet sind, wird somit die Gefahr eines elektrischen Schlages bei der Berührung von zwei oder mehreren Flächenantennenelementen 3 durch einen Monteur vollkommen ausgeschaltet. With such a construction of the antenna radiation heater 2 from a plurality of surface antenna elements 3, which are arranged in a mutual range, the risk of an electric shock when two or more surface antenna elements 3 are touched by a technician is completely eliminated.

Claims

Ansprüche Expectations
1. Antennenstrahlungs-Heizung zur Erwärmung einer Materie mittels Resonanz,1. antenna radiation heating for heating a material by means of resonance,
mit mehreren Flächenantennenelementen, bestehend jeweils aus einemwith several planar antenna elements, each consisting of one
Trägerflächenmaterial und einer darauf aufgebrachten Strahlungsbeschichtung, die durch zwei beabstandete parallele elektrische Leiter mit elektrischem Kontakt als Antennenbegrenzer begrenzt ist und mit der elektromagnetische hochfrequente Strahlung aussendbar ist, undCarrier surface material and a radiation coating applied thereon, which is delimited by two spaced parallel electrical conductors with electrical contact as an antenna limiter and with which electromagnetic high-frequency radiation can be emitted, and
mit einem Oberwellengenerator, der an die beiden elektrischen Leiter eines Flächenantennenelements angekoppelt ist für eine Anregung der Strahlungsbeschichtung zur Abstrahlung eines Schwingungsspektrums im Bereich von molekularen Eigenschwingungsfrequenzen der zu er- wärmenden Materie,with a harmonic generator which is coupled to the two electrical conductors of a surface antenna element for excitation of the radiation coating for the emission of an oscillation spectrum in the range of molecular natural oscillation frequencies of the material to be heated,
dadurch gekennzeichnet,characterized,
dass die Strahlungsbeschichtung (10) einseitig auf das Trägerflächen- material (1 1 ) aufgebracht ist und eine der zu erwärmenden Materie zugewandte Elementvorderseite bildet und auf die Strahlungsbeschichtung (10) eine Berührungsschutzschicht (12) aufgebracht ist, die einerseits die Strahlungsbeschichtung (10) gegen Berührung elektrisch isoliert und andererseits die Abstrahlung des Schwingungsspektrums ohne oder wenigstens mit nur geringer Dämpfung ermöglicht. that the radiation coating (10) is applied on one side to the carrier surface material (11) and forms a front of the element facing the material to be heated, and a contact protection layer (12) is applied to the radiation coating (10), which protects against the radiation coating (10) Touch electrically isolated and on the other hand allows the radiation of the vibration spectrum without or at least with little damping.
2. Antennenstrahlungs-Heizung nach Anspruch 1 , dadurch gekennzeichnet, dass das Trägerflächenmaterial (11) als Elementrückseite einerseits die Strahlungsbeschichtung (10) gegen Berührung elektrisch isoliert und andererseits die Abstrahlung des Schwingungsspektrums ganz oder we- nigstens mit erheblicher Dämpfung verhindert.2. Antenna radiation heater according to claim 1, characterized in that the carrier surface material (11) on the one hand electrically insulates the radiation coating (10) from contact as the element back and on the other hand completely or at least prevents the radiation of the oscillation spectrum with considerable damping.
3. Antennenstrahlungs-Heizung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Berührungsschutzschicht (12) aus einer wässrigen, feindispersen, weichmacherfreien, mittelviskosen Copolymer- Dispersion aus Acryl- und Methacrylsäureestem besteht.3. Antenna radiation heater according to claim 1 or claim 2, characterized in that the contact protection layer (12) consists of an aqueous, finely dispersed, plasticizer-free, medium-viscosity copolymer dispersion of acrylic and methacrylic acid esters.
4. Antennenstrahlungs-Heizung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Berührungsschutzschicht (12) aus einer wässrigen, schutzkolloidhaltigen, mittelviskosen Polymer-Dispersion aus Vinylacetat, Versaticsäure-Vinylester und Maleinsäuredi-n-Butylester besteht.4. Antenna radiation heater according to claim 1 or claim 2, characterized in that the contact protection layer (12) consists of an aqueous, protective colloid-containing, medium-viscosity polymer dispersion of vinyl acetate, versatic acid vinyl ester and maleic acid di-n-butyl ester.
5. Antennenstrahlungs-Heizung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Beschichtungsmaterial der Strahlungs- beschichtung (10) aus Bindemittel, Isolationsmittel, Dispergiermittel,5. Antenna radiation heater according to one of claims 1 to 4, characterized in that the coating material of the radiation coating (10) from binder, insulating agent, dispersant,
Wasser und Graphit besteht und zusammengesetzt ist ausWater and graphite consists of and is composed of
a. 55 bis 65 % Stoffmengenanteile einer Grundsubstanz ausa. 55 to 65% of the amount of substance of a basic substance
39 bis 49 % Stoffmengenanteile Bindemittel,39 to 49% by weight of binder,
18 bis 23 % Stoffmengenanteile Isolationsmittel,18 to 23% substance isolates,
18 bis 24 % Stoffmengenanteile Dispergiermittel,18 to 24% by weight of dispersant,
12 bis 16 % Stoffmengenanteile destilliertes Wasser12 to 16% by weight distilled water
und b. 35 bis 45 % Stoffmengenanteile Graphit,and b. 35 to 45% by weight of graphite,
wobei das Bindemittel zusammengesetzt ist auswherein the binder is composed of
64 bis 79 % Stoffmengenanteile destilliertes Wasser,64 to 79% by weight distilled water,
4 bis 6 % Stoffmengenanteile sulfuriertes Öl,4 to 6% by weight sulfurized oil,
0,15 bis 0,24 % Stoffmengenanteile Phenole oder 0,05 bis0.15 to 0.24% by weight phenols or 0.05 to
0,5 % Stoffmengenanteile Benzisothiazolinon 15 bis 19 % Stoffmengenanteile Kasein, 0,8 bis 1 ,2 % Stoffmengenanteile Harnstoff,0.5% by weight of benzisothiazolinone 15 to 19% by weight of casein, 0.8 to 1, 2% by weight of urea,
2 bis 3 % Stoffmengenanteile alkalisches Verdünnungsmittel, und 2,5 bis 3,5 % Stoffmengenanteile Caprolactam.2 to 3% by weight of alkaline diluent, and 2.5 to 3.5% by weight of caprolactam.
6. Antennenstrahlungs-Heizung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Strahlungsbeschichtung (10) und/oder nach deren Verfestigung die Berührungsschutzschicht (12) durch Aufrakeln hergestellt sind.6. Antenna radiation heater according to one of claims 1 to 5, characterized in that the radiation coating (10) and / or after its solidification, the contact protection layer (12) are produced by knife coating.
7. Antennenstrahlungs-Heizung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Oberwellengenerator als Bestandteil eines Steuer-/Regelgeräts (7) einen elektrischen Baustein umfasst, welcher bei Ansteuerung mit einer Ansteuerschwingung eine steile Stromanstiegsgeschwindigkeit entsprechend einer steilen Anstiegsflanke auf- weist und damit zur Erzeugung eines hohen Oberwellenanteils geeignet ist.7. Antenna radiation heater according to one of claims 1 to 6, characterized in that the harmonic generator comprises, as part of a control / regulating device (7), an electrical component which has a steep current rise speed corresponding to a steep rising edge when actuated with a drive oscillation and is therefore suitable for generating a high harmonic content.
8. Antennenstrahlungs-Heizung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die elektrischen Leiter als parallel ausge- richtete Kupferfolienbänder (14, 15) ausgebildet sind und der elektrische8. Antenna radiation heater according to one of claims 1 to 7, characterized in that the electrical conductors are designed as parallel aligned copper foil strips (14, 15) and the electrical
Kontakt zur Strahlungsbeschichtung (10) als kapazitive und/oder indukti- ve Ankopplung ausgebildet ist, wobei die Strahlungsbeschichtung (10) unter oder über den Kupferfolienbändern (14, 15) liegt oder diese in dieContact to the radiation coating (10) as capacitive and / or inductive ve coupling is formed, the radiation coating (10) below or above the copper foil strips (14, 15) or this in the
Strahlungsbeschichtung (10) eingebettet sind.Radiation coating (10) are embedded.
9. Antennenstrahlungs-Heizung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die mehreren Flächenantennenelemente (3) in gegenseitiger Reichweite angeordnet, elektrisch parallel geschaltet und mittels eines Oberwellengenerators anregbar sind.9. Antenna radiation heater according to one of claims 1 to 8, characterized in that the plurality of surface antenna elements (3) are arranged in mutual range, electrically connected in parallel and can be excited by means of a harmonic generator.
10. Antennenstrahlungs-Heizung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass alle Flächenantennenelemente (3) eine gleiche rechtwinklige Fläche aufweisen und in einer symmetrischen Anordnung mit geringen Zuleitungslängen parallel geschaltet sind. 10. Antenna radiation heater according to one of claims 1 to 9, characterized in that all of the surface antenna elements (3) have the same rectangular surface and are connected in parallel in a symmetrical arrangement with small lead lengths.
EP01957819A 2000-07-29 2001-06-01 Antenna radiation heater for heating a material by using resonance Expired - Lifetime EP1305554B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10037027 2000-07-29
DE10037027A DE10037027A1 (en) 2000-07-29 2000-07-29 Antenna radiation heating for heating a material by means of resonance
PCT/EP2001/006239 WO2002010650A1 (en) 2000-07-29 2001-06-01 Antenna radiation heater for heating a material by using resonance

Publications (2)

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EP1305554A1 true EP1305554A1 (en) 2003-05-02
EP1305554B1 EP1305554B1 (en) 2005-08-31

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EP (1) EP1305554B1 (en)
JP (1) JP2004505425A (en)
CN (1) CN1185444C (en)
AT (1) ATE303563T1 (en)
AU (1) AU2001279640A1 (en)
CA (1) CA2412105A1 (en)
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EA (1) EA004126B1 (en)
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Publication number Priority date Publication date Assignee Title
US7783361B2 (en) * 2004-09-03 2010-08-24 Ct Investments Ltd. Radiant therapeutic heater
TWI396817B (en) * 2007-09-20 2013-05-21 Asustek Comp Inc Air conditioner
US9590296B2 (en) * 2015-05-28 2017-03-07 Nxp B. V. Antenna structure and method for assembling an RFID device
CN112611012A (en) * 2020-12-24 2021-04-06 李红霞 Frequency resonance type heat supply device and method

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CA1089904A (en) * 1978-02-03 1980-11-18 Joseph M. Bender Radiant therapeutic heater
DD208029A1 (en) * 1982-05-28 1984-03-21 Halle Wohnungsbau RADIATION SURFACE FOR THE PRODUCTION OF ELECTROMAGNETIC WAVES AND METHOD FOR THE PRODUCTION THEREOF
FR2582387A1 (en) 1984-12-17 1986-11-28 Leroy Claude Electrical, radiating, heating paint for heating all premises, for deicing trunkroads, etc.
CA1262374A (en) * 1985-06-24 1989-10-17 Ryuji Igarashi High-frequency heating apparatus having a rotating waveguide
US4931625A (en) * 1988-08-17 1990-06-05 Marlinski Edward J Device for shielding electromagnetic radiation
DE19849432A1 (en) * 1998-10-27 2000-06-15 Molekulare Energietechnik Ag V Heating arrangement

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Title
See references of WO0210650A1 *

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WO2002010650A1 (en) 2002-02-07
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CN1185444C (en) 2005-01-19
US6689994B2 (en) 2004-02-10
HK1056766A1 (en) 2004-02-27
ATE303563T1 (en) 2005-09-15
US20030155348A1 (en) 2003-08-21
DE10037027A1 (en) 2002-02-21
DE50107305D1 (en) 2005-10-06
EA200300200A1 (en) 2003-06-26
CN1444714A (en) 2003-09-24
CA2412105A1 (en) 2002-12-12
EA004126B1 (en) 2003-12-25

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