EP2100479B1 - Dispositif de chauffage à micro-ondes - Google Patents

Dispositif de chauffage à micro-ondes Download PDF

Info

Publication number
EP2100479B1
EP2100479B1 EP07856371A EP07856371A EP2100479B1 EP 2100479 B1 EP2100479 B1 EP 2100479B1 EP 07856371 A EP07856371 A EP 07856371A EP 07856371 A EP07856371 A EP 07856371A EP 2100479 B1 EP2100479 B1 EP 2100479B1
Authority
EP
European Patent Office
Prior art keywords
microwave
frequency
microwaves
drying
objects
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.)
Not-in-force
Application number
EP07856371A
Other languages
German (de)
English (en)
Other versions
EP2100479A1 (fr
Inventor
Marcel Mallah
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fricke und Mallah Microwave Technology GmbH
Original Assignee
Fricke und Mallah Microwave Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fricke und Mallah Microwave Technology GmbH filed Critical Fricke und Mallah Microwave Technology GmbH
Priority to PL07856371T priority Critical patent/PL2100479T3/pl
Publication of EP2100479A1 publication Critical patent/EP2100479A1/fr
Application granted granted Critical
Publication of EP2100479B1 publication Critical patent/EP2100479B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H05B6/78—Arrangements for continuous movement of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/241—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening using microwave heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
    • 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
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • H05B2206/046—Microwave drying of wood, ink, food, ceramic, sintering of ceramic, clothes, hair

Definitions

  • the invention relates to a micro-roll heating device having the features of the preamble of independent claim 1 and a method for heating of heating material, such.
  • Example for drying of ceramic moldings with microwaves, preferably using this drying device, with the features of the preamble of the independent claim. 7
  • the energy input to the core of a product is usually associated with conventional drying processes with conventional heat generation for a very long time, since the temperature gradient is slow from the Layer surface spreads into the interior of the product to be dried.
  • microwaves have a comparatively high penetration depth for well-insulating products, such as ceramic materials, and also heat the irradiated volume more uniformly through direct coupling.
  • microwave dryers are in principle well suited for all drying tasks of materials or moldings with embedded aqueous components or solvents which a Dipolmoment, i. have a high dielectric constant.
  • microwave drying are therefore also extensively used industrially for the production process of the soot or diesel particle filters (RPF), which are also required in large quantities, and also known as microparticle filters.
  • RPF diesel particle filters
  • These large-sized ceramic components with a micro-honeycomb structure and preferably a cylindrical geometry are needed in large numbers in the auto industry. They usually consist of silicon carbide (SiC) or mixed ceramics with a high silicon carbide content.
  • SiC silicon carbide
  • mixed ceramics with a high silicon carbide content.
  • microwave ovens are increasingly gaining in importance because of the aforementioned advantageous properties of microwave radiation.
  • continuous-flow drying systems are particularly frequently used for the heat treatment of ceramic materials.
  • the drying methods used for various tasks are implemented there by arranging, controlling and parameterizing the various system components.
  • the dry material on a belt conveyor is usually transported through several heating zones and the drying time can be regulated by the belt speed.
  • microwave generators are arranged, preferably above and below the belt conveyor, by means of which acting in the drying zones antennas microwaves are radiated to the dry matter.
  • the dry material such as Microparticle filter body are heated as uniformly as possible in its entire volume on the drying section.
  • microwave dryers are often equipped with additional hot air atomizing systems and corresponding suction devices to support the drying process and to remove the resulting vapors.
  • the high humidity in the oven should prevent the different degrees of shrinkage, as well as the formation of cracks and wrinkles.
  • the high moisture content in this known solution should also lead to undesirably prolonged drying times and increase the necessary heating power for the drying process.
  • the frequency of the microwave generators used here should be selected from a frequency range of 300 MHz to 300 GHz.
  • This proposed method requires a complex signal processing, and an associated with the monitoring sensors control electronics. It is to be expected that in the operation of the sensors to be monitored and the controls of the microwave generators in such a heat and moisture-contaminated work environments with frequent failures is to be expected. So that in addition to the high plant technical requirements of this solution also doubts about the reliability and functionality of the sensor system (image recognition) are appropriate for longer periods of operation.
  • a microwave drying process for synthetic polymers which separates volatile polar vehicles such as water or organic solvents from non-polar materials by passing the respective material through at least one resonator cavity of a pneumatic conveyor.
  • the polymer may be passed through a first resonator cavity in which microwaves at a frequency of 915 MHz act on the polymer and through a second resonator cavity in microwaves at a frequency of 2.450 GHz act on the dry matter.
  • the different frequencies of the microwave radiation are on the changing, d, h. adjusted decreasing moisture content of the polymer.
  • the areas in which the different microwaves act on the material are delimited by screening grids.
  • the pneumatic conveyor is suitable for granular or powdery materials which are free-flowing.
  • various inorganic materials, such as ceramics are mentioned as dry matter.
  • the microwave generators can be provided for the emission of microwaves of different frequencies.
  • the radiation of microwaves at frequencies of 2410 and 2450 MHz is proposed to expose these insects to the difference frequency of 40 MHz.
  • irradiation with microwaves of 2410 MHz, 2420 MHz, 2420 MHz, 2430 MHz, 2440 MHz and 2450 MHz is proposed.
  • one of the described microwave heating devices which may have microwave generators radiating at different microwave frequencies, has been used to cure a fiberglass sailboat mast.
  • a microwave continuous furnace which has an elongated working space and a conveyor belt for objects to be treated.
  • the objects are exposed to microwaves at different frequencies as they move. This is to keep the absorption of the microwaves constant, which is proportional to the product of the electricity constant, the loss factor and the frequency. Since the dielectric constant and the loss factor with the temperature and the humidity of the object, in the case of a drying operation, an object to be dried must be subjected to microwaves of increasing frequency, while in the case of a heating process, an object to be heated is to be subjected to falling frequencies of microwave frequency in order to adhere the absorption constantly. As an example of an object to be heated meals are given.
  • the object of the present invention is therefore to propose a microwave heating method and a microwave heating device, which avoid the disadvantages of prior art methods and tracking devices for heating material in the form of solids and allow as far as possible stress-free uniform drying, in particular in the volume of the ceramic dry material. At the same time, however, the necessary drying times in the drying devices used should also be optimized in order to reduce costs.
  • a microwave heating device having the features of independent claim 1 and a method for microwave heating with the features of independent claim 7, which is equipped with one or more microwave generators, which are designed such that the dry matter to be treated at a first microwave frequency of the irradiated by one or more microwave generators and irradiated simultaneously or successively with a second frequency from the lower frequency range of the internationally permissible lower frequency band by one or more microwave generators, the upper frequency band of the International permissible microwave frequencies (ISM frequencies).
  • ISM frequencies International permissible microwave frequencies
  • microwave generators In all known from the practice microwave drying devices microwave generators are used, which operate at a frequency of 2.45 GHz, ie with the same frequency as the world's popular microwave household appliances.
  • This ISM frequency Industrial, Scientific and Medical applications is one of the microwave frequencies permitted worldwide for heating purposes.
  • the drying process using this frequency does not provide satisfactory results and is associated with some difficulties, which is caused in particular by the low penetration of the microwaves into the ceramic material. It has been found that the penetration depth is an important measure of the location of the heat development in the volume of the material to be heated. But the size and geometry of the dry material play a crucial role in the formation of the internal temperature profile. According to the fact that the distribution of the internal heat sources in relation to the layer thickness of the material to be heated can be influenced by the microwave frequency used, it is proposed according to the invention to irradiate the dry matter to be heated with one or more different microwave frequencies, preferably equal to or at a high frequency greater 2.45 GHz and a lower frequency equal to or less than 1000 MHz.
  • inventive application of these mechanisms in a microwave drying device enable a new more efficient drying process by irradiation of the ceramic dry material by matched microwaves of different frequencies and a process Gestelitze controlled microwave power, which avoids the disadvantages of previously known methods.
  • the inventive microwave drying device is equipped with a plurality of microwave generators, which are each technically constructed so that they can radiate different frequencies, preferably from the upper and the lower frequency range on the dry material.
  • the proposed drying device for supporting the drying process can advantageously be supplemented and supported by further system components.
  • the additional arrangement of a known hot-air atomization system with suction device for supporting the drying process and removal of moisture has proved to be advantageous.
  • one or more additional dampening systems in the drying zones of the continuous ovens or drying chambers result in more uniform drying of the workpieces under a controlled steam atmosphere.
  • the cracking and deformation on the surface of the ceramic moldings can be minimized and significant quality improvements can be achieved.
  • microwave drying devices are known in the prior art in different embodiments for drying ceramic shaped bodies.
  • dry goods such as assemblies of sanitary engineering or the particularly important ceramic filter inserts of silicon carbide (SiC) for soot particulate filter of the automotive industry microwave generators are used with a frequency of 2.45 GHz.
  • SiC silicon carbide
  • the underlying microwave drying device ( Fig. 1 ) initially does not differ fundamentally from known plant concepts and is designed as a continuously operating continuous drying kiln 1 for ceramic shaped bodies with a plurality of microwave generators 3,4.
  • Absorber zones 6, 12 are also provided for the dry material inlet and outlet on the drying oven, which are adapted to the type and geometry of the dry material to be introduced.
  • the two absorber zones should prevent the escape of microwave radiation into the surroundings of the furnace, but in particular from the furnace entrance area 12 and the exit area 6. In the case of larger-volume products or for higher product throughputs, combined reflection and absorption locks in the entry and exit areas can also be used advantageously.
  • the arrangement of several field guides 8 in the ceiling region of the drying chamber 11 is advantageous.
  • the dry material is conveyed by means of continuous conveyor belt 7 through the drying chamber 11 of the furnace.
  • the drying chamber is constantly supplied with certain quantities of fresh air to remove the moisture arising from the drying process 5, 9 and is sucked off at the outlet 10.
  • a chamber furnace 2 is shown.
  • the dry material is placed on an arranged in the drying chamber 13 turntable 14 and rotated comparable to domestic microwave ovens during drying.
  • the coupling of the present invention different frequencies via the coupling elements 3 and 4.
  • the chamber furnace requires a continuous ventilation and exhaust 9, 10 for the removal of moisture.
  • ceramic shaped bodies are used as cylindrical filter inserts for microparticle filters.
  • Their honeycomb cell structure is particularly sensitive to greater temperature and humidity differences during drying, which can lead to material tensions, cracks or fractures and jeopardizes the usability.
  • the microwave generators for generating a higher frequency and the microwave generators for generating a lower frequency are arranged above and below the conveyor belt of the individual drying zones.
  • the high-frequency microwave generators operate at a frequency of 2.45 GHz. In this frequency range, the microwaves couple into near-surface areas, which leads to increased heat development in these areas.
  • the microwave frequency is increased from 2.45 GHz to 5.8 GHz, in particular by selecting a suitable dielectric, not only does the penetration depth of the Radiation, but also the heating power density directly below the surface of the dry material is increased.
  • microwaves from the frequency range of 900 MHz to 1000 MHz have a much greater penetration depth into the ceramic material to be dried.
  • the heat input is increased in the inner volume of the dry material, whereby the drying process is accelerated significantly accelerated.
  • microwave fields in this lower permissible frequency range increasingly show inhomogeneities in the field distribution, so that in certain cases the arrangement of suitable reflectors in the drying chambers is advantageous.
  • the low frequency microwave generators operate at a frequency of 915 MHz and are mounted primarily in the rear of the continuous furnace.
  • the penetration depth and thus the microwave frequency used has proved to be an important measure of the geometric distribution (heat sources) of the heat development in the volume of the material to be heated, the size and geometry of the dry material in the formation of the internal temperature profile plays a role to be considered.
  • the microwave energy can be used very effectively for the selection of suitable frequencies for particular material geometries and very advantageously for the drying process.
  • the present inventive method for microwave drying and the proposed microwave drying device allow a dry treatment of particular large-volume ceramic moldings, which compared to known methods and equipment faster product throughput, thus allowing shorter drying times, and largely stress and crack-free products.
  • the microwave heating device according to the invention and the method according to the invention can also be used for heating other materials than ceramics and for purposes other than drying, such as for heating preforms in the manufacture of components made of fiber composite or wood materials or for heat-induced curing, for example. Networking of various substances ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Drying Of Solid Materials (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Furnace Details (AREA)
  • Electric Ovens (AREA)
  • Resistance Heating (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Claims (13)

  1. Dispositif de chauffage à micro-ondes, avec un four à micro-ondes à passage continu (1) ou un four à micro-ondes à chambre (2), qui accueille le produit à chauffer sous forme de solides, et avec plusieurs générateurs de micro-ondes pour le rayonnement de micro-ondes d'une fréquence de 300 MHz à 5,8 GHz et pour leur couplage dans le produit à chauffer dans le four à micro-ondes à passage continu (1) ou dans le four à micro-ondes à chambre (2), caractérisé en ce qu'un ou plusieurs des générateurs de micro-ondes sont conçus pour le rayonnement de micro-ondes avec une première fréquence provenant d'une plage supérieure de fréquences de micro-ondes plus grandes que 1 GHz, sachant que leur profondeur de pénétration dans le produit à chauffer est plus petite, et un ou plusieurs des générateurs de micro-ondes sont conçus pour le rayonnement de micro-ondes avec une deuxième fréquence provenant d'une plage inférieure de fréquences de micro-ondes qui ne sont pas supérieures à 1 GHz, sachant que leur profondeur de pénétration dans le produit à chauffer est plus grande.
  2. Dispositif de chauffage à micro-ondes selon la revendication 1, caractérisé en ce que la première fréquence provenant de la plage supérieure de fréquences de micro-ondes est située dans un intervalle de 2,45 à 5,8 GHz et en ce que la deuxième fréquence provenant de la plage inférieure de fréquences de micro-ondes est située dans un intervalle de 900 MHz à 1000 MHz.
  3. Dispositif de chauffage à micro-ondes selon la revendication 1 ou 2, caractérisé en ce que les générateurs de micro-ondes couplent aussi bien les micro-ondes de la première fréquence que les micro-ondes de la deuxième fréquence dans une chambre de séchage (11, 13) du four à passage continu (1) ou du four à micro-ondes à chambre (2).
  4. Dispositif de chauffage à micro-ondes selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il est conçu comme four à micro-ondes à passage continu (1) avec un ou plusieurs modules de séchage.
  5. Dispositif de chauffage à micro-ondes selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le four à micro-ondes est configuré comme four à micro-ondes hybride qui, pour l'assistance du séchage à micro-ondes multifréquences et pour une meilleure évacuation des vapeurs produites, comporte un système supplémentaire de pulvérisation à air chaud avec un dispositif d'aspiration et/ou au moins un système d'humidification pour la mise à disposition d'une atmosphère de vapeur contrôlée.
  6. Dispositif de chauffage à micro-ondes selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un ou plusieurs dispositifs supplémentaires de chauffage de type conventionnel sont disposés pour l'assister et le compléter, lesquels sont configurés de préférence comme chauffage au gaz et/ou comme éléments de chauffage commandés électriquement.
  7. Procédé pour le chauffage de produit à chauffer sous la forme de corps solides de grand volume par traitement avec des micro-ondes provenant d'un intervalle de fréquence des fréquences ISM de 300 MHz à 5,8 GHz, agréé dans le monde entier pour les buts de chauffage, caractérisé en ce que, pour la réalisation de différentes profondeurs de pénétration dans le produit à chauffer, le produit à chauffer est traité pendant un certain intervalle de temps avec des micro-ondes d'une première fréquence provenant d'une plage supérieure de fréquences de micro-ondes de 2,45 à 5,8 GHz, et en même temps ou successivement, pendant un certain intervalle de temps, avec des micro-ondes d'une deuxième fréquence provenant d'une plage inférieure de fréquences de micro-ondes de 900 MHz à 1000 MHz.
  8. Procédé selon la revendication 7, caractérisé en ce que le produit à chauffer comprend des corps moulés provenant du secteur de la céramique technique.
  9. Procédé selon la revendication 9, caractérisé en ce que le produit à chauffer comprend des structures céramiques ou des corps de filtre pour des filtres à particules de suie ou des filtres à particules pour moteurs diesel.
  10. Procédé selon la revendication 9, caractérisé en ce que les structures ou les corps de filtre céramiques pour la fabrication de filtres à particules de suie ou de filtres à particules pour moteurs diesel contiennent comme composant essentiel du carbure de silicium (SiC).
  11. Procédé selon l'une quelconque des revendications 7 et 8 pour le séchage de pièces moulées en céramique provenant du secteur de la céramique sanitaire, caractérisé en ce que, pour la réalisation de différentes profondeurs de pénétration dans le produit à chauffer, le produit à sécher est traité pendant un certain intervalle de temps avec des micro-ondes d'une première fréquence provenant de la plage supérieure de fréquences de micro-ondes, de préférence de 2,45 à 5,8 GHz, et en même temps ou successivement, pendant un certain intervalle de temps, avec des micro-ondes d'une deuxième fréquence provenant de la plage inférieure de fréquences de micro-ondes, de préférence de 900 MHz à 1000 MHz, sachant qu'il est prévu un traitement aux micro-ondes avec d'autres fréquences de micro-ondes.
  12. Procédé selon la revendication 7, caractérisé en ce que le produit à chauffer devant être traité est une préforme ou une partie d'une préforme pour une pièce en un matériau composite de fibres ou en un matériau à base de bois.
  13. Procédé selon l'une quelconque des revendications 7 à 12, caractérisé en ce que des micro-ondes de différentes fréquences agissent en même temps, les unes après les autres, à des intervalles de temps et/ou d'espace quelconques les unes par rapport aux autres, ou moyennant des séquences quelconques de changement de fréquence, sur les pièces moulées en céramique à sécher.
EP07856371A 2006-12-06 2007-12-05 Dispositif de chauffage à micro-ondes Not-in-force EP2100479B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07856371T PL2100479T3 (pl) 2006-12-06 2007-12-05 Mikrofalowe urządzenie ogrzewające

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006057780 2006-12-06
DE102007028595 2007-06-19
PCT/EP2007/010530 WO2008067996A1 (fr) 2006-12-06 2007-12-05 Dispositif de chauffage à micro-ondes

Publications (2)

Publication Number Publication Date
EP2100479A1 EP2100479A1 (fr) 2009-09-16
EP2100479B1 true EP2100479B1 (fr) 2011-02-02

Family

ID=39325611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07856371A Not-in-force EP2100479B1 (fr) 2006-12-06 2007-12-05 Dispositif de chauffage à micro-ondes

Country Status (7)

Country Link
US (1) US20090302031A1 (fr)
EP (1) EP2100479B1 (fr)
JP (1) JP2010511980A (fr)
AT (1) ATE497686T1 (fr)
DE (1) DE502007006433D1 (fr)
PL (1) PL2100479T3 (fr)
WO (1) WO2008067996A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017114660A1 (fr) 2015-12-30 2017-07-06 Sig Technology Ag Dispositif et procédé de chauffage de pièces découpées et/ou d'enveloppes d'emballage et/ou d'emballages en matériau composite par polarisation d'orientation
DE102017114733A1 (de) 2017-06-30 2019-01-03 Sig Technology Ag Vorrichtung und Verfahren zum Erhitzen von Zuschnitten und/oder Packungsmänteln und/oder Verpackungen aus Verbundmaterial durch Orientierungspolarisation
EP3888885A1 (fr) 2020-04-02 2021-10-06 Fricke und Mallah Microwave Technology GmbH Four convoyeur à micro-ondes

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9545735B2 (en) * 2008-08-20 2017-01-17 Corning Incorporated Methods for drying ceramic greenware using an electrode concentrator
JP5345437B2 (ja) * 2009-03-26 2013-11-20 日本碍子株式会社 ハニカム成形体の乾燥方法
CN102814268B (zh) * 2012-07-09 2015-07-15 上海志鹤水性涂料科技有限公司 微波水性木器漆家具提水干燥涂装设备及涂装方法
DE102016119463A1 (de) 2016-10-12 2018-04-12 Siempelkamp Maschinen- Und Anlagenbau Gmbh Durchlaufofen zur kontinuierlichen Erwärmung einer Pressgutmatte
FR3058138B1 (fr) * 2016-10-28 2019-02-01 Centre National De La Recherche Scientifique Procede de traitement thermique d’une piece en materiau ceramique par micro-ondes
US9849708B1 (en) 2017-02-23 2017-12-26 Ricoh Company, Ltd. Microwave dryer of a print system with modulation of the microwave source using frequency shift keying
DE102018105385B4 (de) 2018-03-08 2020-01-30 Siempelkamp Maschinen- Und Anlagenbau Gmbh Durchlaufofen und Anlage zur Herstellung von Holzwerkstoffplatten
DE102018105390B4 (de) 2018-03-08 2020-08-20 Siempelkamp Maschinen- Und Anlagenbau Gmbh Durchlaufofen und Anlage zur Herstellung von Holzwerkstoffplatten
EP3732985A1 (fr) * 2019-05-02 2020-11-04 Metalquimia, S.A.U. Installation de décongélation et procédé de décongélation de produits de viande surgelée brute dans un culbuteur à tambour
CN110328862A (zh) * 2019-07-18 2019-10-15 佛山市高明金石建材有限公司 一种石英石生产线上的固化加热装置
CN116940696A (zh) * 2020-11-24 2023-10-24 技术资源有限公司 生物质直接还原铁

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1183615B (de) * 1959-04-15 1964-12-17 Litton Industries Inc Hoechstfrequenz-Heizvorrichtung
DE1818464U (de) * 1960-07-04 1960-09-22 Mikrowellen Ges M B H Deutsche Mikrowellen-durchlaufofen.
US3448384A (en) * 1965-10-23 1969-06-03 Allan W Scott Integral microwave radiating and generating unit for heating
US3771234A (en) * 1969-09-09 1973-11-13 Exxon Research Engineering Co Microwave drying process for synthetic polymers
US3977089A (en) * 1969-09-09 1976-08-31 Exxon Research And Engineering Company Microwave drying process for synthetic polymers
US4055001A (en) * 1971-11-18 1977-10-25 Exxon Research & Engineering Co. Microwave drying process for synthetic polymers
AU565393B2 (en) * 1983-08-23 1987-09-17 Microwave Power Consultants Pty Ltd Microwave treatment of materials
EP0788725B1 (fr) * 1994-10-24 2002-04-17 Matsushita Electric Industrial Co., Ltd. Appareil generateur de vapeur pour systeme de chauffage par induction
AUPP396998A0 (en) * 1998-06-09 1998-07-02 University Of Melbourne, The A method for increasing the permeability of wood
DE10201299A1 (de) * 2001-01-16 2002-08-29 Denso Corp Verfahren zur Anfertigung eines Wabenkörpers und Trockensystem
JP4103984B2 (ja) * 2001-01-16 2008-06-18 株式会社デンソー ハニカム成形体の製造方法及び乾燥装置
US6872927B2 (en) * 2001-12-26 2005-03-29 Lambda Technologies, Inc. Systems and methods for processing pathogen-contaminated mail pieces
JP4133252B2 (ja) * 2002-11-19 2008-08-13 株式会社デンソー セラミック成形体の乾燥方法及び乾燥装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017114660A1 (fr) 2015-12-30 2017-07-06 Sig Technology Ag Dispositif et procédé de chauffage de pièces découpées et/ou d'enveloppes d'emballage et/ou d'emballages en matériau composite par polarisation d'orientation
DE102015122976A1 (de) 2015-12-30 2017-07-20 Sig Technology Ag Vorrichtung und Verfahren zum Erhitzen von Zuschnitten und/oder Packungsmänteln und/oder Verpackungen aus Verbundmaterial durch Orientierungspolarisation
DE102017114733A1 (de) 2017-06-30 2019-01-03 Sig Technology Ag Vorrichtung und Verfahren zum Erhitzen von Zuschnitten und/oder Packungsmänteln und/oder Verpackungen aus Verbundmaterial durch Orientierungspolarisation
EP3888885A1 (fr) 2020-04-02 2021-10-06 Fricke und Mallah Microwave Technology GmbH Four convoyeur à micro-ondes

Also Published As

Publication number Publication date
ATE497686T1 (de) 2011-02-15
DE502007006433D1 (de) 2011-03-17
WO2008067996A1 (fr) 2008-06-12
EP2100479A1 (fr) 2009-09-16
US20090302031A1 (en) 2009-12-10
JP2010511980A (ja) 2010-04-15
PL2100479T3 (pl) 2011-07-29

Similar Documents

Publication Publication Date Title
EP2100479B1 (fr) Dispositif de chauffage à micro-ondes
EP1060355B1 (fr) Procede et dispositif pour le frittage hyperfrequence de combustible nucleaire
EP1639865B1 (fr) Resonateur micro-ondes, chaine de processus constituee selon le principe modulaire a partir d'un resonateur micro-ondes, procede de fonctionnement et objets/pieces traites thermiquement par micro-onde selon ce procede
EP2227447B1 (fr) Procédé pour sécher des corps céramiques en nid d'abeilles
EP1777993B1 (fr) Autoclave à micro-ondes
DE4313806A1 (de) Vorrichtung zum Erhitzen von Materialien in einer mit Mikrowellen bestrahlbaren Heizkammer und Verfahren zum Herstellen von keramischem Gut, bei dem das Rohgut mittels Mikrowellen getrocknet wird
JP2015505747A (ja) 押出成形ハニカム構造体を効率的にマイクロ波乾燥させるシステム及び方法
WO2006056175A1 (fr) Tunnel de sechage a micro-ondes a plusieurs etages pour produits en forme de plaques, notamment des panneaux de fibres
DE2232065C3 (de) Mikrowellen-Erhitzungseinrichtung
DE3650431T2 (de) Ofen für wärmebehandlung.
EP3095571B1 (fr) Procédé de séchage par micro-ondes d'un corps formé alvéolaire
EP1681102B1 (fr) Méthode et dispositif pour le séchage de couches de peinture
DE102007000573A1 (de) Verfahren zum Herstellen eines kompakten Wabenkörpers und Trocknungsgerät zum Gebrauch bei einem derartigen Verfahren
DE2451253A1 (de) Verfahren zum sintern keramischer erzeugnisse und vorrichtung zur durchfuehrung des verfahrens
WO1982001411A1 (fr) Procede de sechage de produit en bois
EP1020099A1 (fr) Dispositif pour rechauffer des aliments a l'aide d'ondes millimetriques
DE2928846A1 (de) Verfahren zum herstellen von - insbesondere scheibenfoermigen - formstuecken aus einem schleifmaterial
WO2008006681A2 (fr) Appareil à rayonnement, procédé et ensemble de revêtement par poudre de matériaux dérivés du bois
DE29517499U1 (de) Vorrichtung zur Behandlung von Substanzen mit elektromagnetischer Hochfrequenzenergie
EP0113900B1 (fr) Appareil et procédé pour le traitement de nourriture au moyen de micro-ondes
CN108141931A (zh) 用于利用微波处理材料的组件
DE102015107380B4 (de) Vorrichtung zum kontinuierlichen Erwärmen von Material
DE102016107550B4 (de) Verfahren und Vorrichtung zur thermischen Behandlung von Feststoffen
DE202015102422U1 (de) Vorrichtung zum kontinuierlichen Erwärmen von Material
AT502830B1 (de) Wärmebehandlungsofen

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090625

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502007006433

Country of ref document: DE

Date of ref document: 20110317

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007006433

Country of ref document: DE

Effective date: 20110317

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20110202

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20110202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110602

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110602

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110513

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110503

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E010867

Country of ref document: HU

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110502

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20111103

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007006433

Country of ref document: DE

Effective date: 20111103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

BERE Be: lapsed

Owner name: FRICKE UND MALLAH MICROWAVE TECHNOLOGY G.M.B.H.

Effective date: 20111231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20111205

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: DAS PATENT IST AUFGRUND DES WEITERBEHANDLUNGSANTRAGS VOM 20.09.2012 REAKTIVIERT WORDEN.

Ref country code: CH

Ref legal event code: NV

Representative=s name: RIEDERER HASLER & PARTNER PATENTANWAELTE AG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111205

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110202

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 497686

Country of ref document: AT

Kind code of ref document: T

Effective date: 20121205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121205

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20141216

Year of fee payment: 8

Ref country code: DE

Payment date: 20141205

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20141229

Year of fee payment: 8

Ref country code: FR

Payment date: 20141212

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: HU

Payment date: 20150115

Year of fee payment: 8

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007006433

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151206

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151205