EP3323273A1 - Dispositif pour le traitement de matériaux par micro-ondes - Google Patents

Dispositif pour le traitement de matériaux par micro-ondes

Info

Publication number
EP3323273A1
EP3323273A1 EP16731559.7A EP16731559A EP3323273A1 EP 3323273 A1 EP3323273 A1 EP 3323273A1 EP 16731559 A EP16731559 A EP 16731559A EP 3323273 A1 EP3323273 A1 EP 3323273A1
Authority
EP
European Patent Office
Prior art keywords
microwaves
arrangement according
microwave applicator
materials
treatment area
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
EP16731559.7A
Other languages
German (de)
English (en)
Other versions
EP3323273B1 (fr
Inventor
Christian Dreyer
Monika Bauer
Dominik SÖTHJE
Reinhard Fischer
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.)
Ibf Electronic Gmbh&co KG
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Ibf Electronic Gmbh&co KG
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Ibf Electronic Gmbh&co KG, Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Ibf Electronic Gmbh&co KG
Publication of EP3323273A1 publication Critical patent/EP3323273A1/fr
Application granted granted Critical
Publication of EP3323273B1 publication Critical patent/EP3323273B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H05B6/70—Feed lines
    • H05B6/701—Feed lines using microwave applicators
    • 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
    • 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
    • H05B2206/044—Microwave heating devices provided with two or more magnetrons or microwave sources of other kind

Definitions

  • the invention relates to an arrangement for the treatment of materials with microwaves.
  • materials can be dried or composite materials cured.
  • a single-mode applicator also called Momomode oven - forms a standing wave whose wavelength is determined by the operating frequency.
  • the furnace usually consists of a slotted rectangular waveguide, the slit width being fixed by the predetermined wavelength or frequency. Within the usually very narrow slot but a good homogeneity can be achieved. If the slot width is chosen to be larger, the shaft will exit. That is undesirable. Thicker or curved materials can not be treated with such a single-mode applicator.
  • multimode applicator also called multimode oven - form several modes and it can also be treated materials with larger dimensions.
  • a disadvantage of these arrangements is that the field strength is not evenly distributed in the treatment room, so that in thin materials some places are not treated and some places overly.
  • Known microwave arrangements operate either in batch mode, in which individual pieces are treated or in continuous operation, in which the material - individual pieces or by the meter - are successively moved through the treatment area.
  • the arrangement includes:
  • a drive for moving apart or moving away of the two parts of the single-mode microwave applicator is provided, such that increase the dimensions of the second treatment area perpendicular to the conveying direction.
  • two treatment areas are provided. The material is carried through both treatment areas at each treatment. Depending on the material, the monomode or multimode applicator or both can be turned on. It can therefore be treated with an arrangement all materials regardless of the dimensions.
  • a drive for moving the two parts of the single-mode microwave applicator apart and away such that the dimensions of the second treatment area increase perpendicular to the direction of conveyance.
  • the drive can be configured arbitrarily, for example mechanically, hydraulically, pneumatically or electrically.
  • the drive can be manually operated or automatically. The movement can be triggered manually or by a controller.
  • a switch is provided for switching off the single-mode microwave applicator when moving apart or moving away his two parts.
  • the switch ensures that the monomode microwave applicator is turned on only when it is actually needed and closed.
  • the treatment with microwaves occurs predominantly in the interior of the material. It may therefore be advantageous if additional energy is transferred to the surface of the material.
  • an additional infrared radiation source is provided for irradiating the material with infrared light.
  • the infrared radiation source can be arranged such that the material is irradiated in the first treatment area. However, it is also conceivable to arrange the infrared radiation source in the second treatment area or separately in front of or behind the treatment areas.
  • the microwaves have a wavelength between 0.1 and 30 GHz, preferably between 1 and 6 GHz and most preferably in the range between 2.44 and 2.46 GHz. This has the advantage that the wavelengths are approved in many countries for this use and sufficient energy transfer to the material guarantee. Other free frequencies around 915 MHz, for homogeneous fields rather too high wavelength, and 5.8 GHz are also available.
  • the means for conveying the material to be treated comprise a conveyor belt.
  • the material is then placed on the conveyor belt and transported with this through the treatment areas.
  • the material is moved in other ways through the treatment areas, such as rollers, driving equipment, carriers, robots or the like.
  • the material can be stretched and passed through the interior of the microwave arrangement without further aids. If necessary, the material can also be moved backwards or "oscillating" back and forth.
  • the conveyor belt is permeable to the generated microwaves. Then the microwave field is influenced to a lesser extent.
  • a conveyor belt which is a glass fiber reinforced Teflon grid.
  • the conveyor belt can be formed by a grid with a grid spacing between 1 and 10 mm. The grid spacing is preferably selected such that the material rests securely.
  • the arrangement according to the invention is used for treating prepregs, it is advantageous if a device for producing prepregs for prepregs is connected upstream.
  • the arrangement can be equipped with individual parts and with endless goods.
  • the two-part single-mode microwave applicator can be moved apart such that materials with a maximum thickness of 20 cm, preferably a maximum thickness of 15 cm and most preferably a maximum thickness of 10 cm through the second treatment area are transportable.
  • Thiickness here means the dimension perpendicular to the parts of the single-mode microwave applicator.It is understood that the dimensions in the other directions may be virtually arbitrary, so in particular also larger or smaller than the selected thickness.
  • Fig. L is a side view of an arrangement for treating materials with
  • Microwaves with a multimode applicator, a single-mode applicator and an infrared radiation source are provided.
  • FIG. 2 is a plan view of the arrangement of FIG. 1.
  • FIG. 2 is a plan view of the arrangement of FIG. 1.
  • FIG. 3 is a front view of the arrangement of FIG. 1.
  • FIG. 4 shows a detail from FIG. 1 with the monomode applicator in FIG.
  • FIG. 5 shows a detail from FIG. 1 with the monomode applicator in the opened position
  • FIG. 1 to 3 there is shown an arrangement generally designated 10 for treating materials with microwaves.
  • all kinds of materials in the form of piece goods or by the meter can be treated, for example, prepregs, composite materials, brake pads or the like.
  • the materials are supplied with energy via microwaves, with which the material is cured, heated and / or dried.
  • the figures show, by way of example, a substrate 12 which is conveyed on a conveyor belt 14 made of fiberglass-reinforced Teflon grid.
  • the conveyor belt is permeable to microwaves.
  • the conveying direction is indicated by an arrow 28.
  • the conveyor belt 14 enters a housing 16 bounded by a treatment chamber.
  • the Treatment chamber 16 20 microwaves the frequency 2.45 GHz of a multimode applicator 18 are generated in a first treatment room.
  • microwaves of frequency 2.45 GHz of a single-mode applicator 24 are generated.
  • microwave traps 15 and 17 are arranged, which prevent leakage of the microwaves from the assembly.
  • Microwave traps of the single-mode applicator are arranged in its housing.
  • a thin substrate 12 can be moved with the conveyor belt through both treatment chambers 20 and 22, the treatment chamber 16.
  • drives 19 and 21 are provided.
  • both applicators are turned on, the substrate 12 is exposed twice to treatment with microwaves.
  • microwaves penetrate deep into the material depending on the material selected.
  • Absorbent material has a temperature gradient when treated with microwaves. The surface releases heat to the outside and is slightly cooler than the interior of the material.
  • materials that do not absorb microwave radiation such as polypropylene or glass. Materials that neither absorb nor transmit reflect the microwaves.
  • FIG. 4 shows a detail of FIG. 1 with the single-mode applicator 24. It can be seen that the slot through which the material 12 is guided is very narrow in the vertical direction in this exemplary embodiment. The arrangement therefore provides that the upper and the lower part of the single-mode applicator has a distance 30 from the conveyor belt.
  • the components of the single-mode applicator 24 are driven completely out of the treatment area when thick or curved materials with larger dimensions in the vertical direction are conveyed through the first treatment area 20.
  • the parts of the single-mode applicator can be set to different distances.
  • the maximum distance corresponds to the headroom in the multimode applicator.
  • the system can be built not only horizontally but also vertically. This is especially useful with endless material.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Dispositif (10) pour traiter des matériaux (12) à l'aide de micro-ondes, comprenant un applicateur de micro-ondes multimode (18) pour le traitement du matériau à l'aide de micro-ondes dans une première zone de traitement (20), un applicateur de micro-ondes monomode (24) pour le traitement du matériau dans une seconde zone de traitement (22); et des moyens (14) pour faire passer le matériau à traiter successivement à travers la première et la seconde zone de traitement, le dispositif comprenant un système d'entraînement (32) pour séparer ou éloigner les deux parties de l'applicateur de micro-ondes monomode, de telle manière que les dimensions (30) de la seconde zone de traitement sont augmentées perpendiculairement à la direction de transport (28).
EP16731559.7A 2015-07-16 2016-06-16 Dispositif pour le traitement de matériaux par micro-ondes Active EP3323273B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015111555.7A DE102015111555B3 (de) 2015-07-16 2015-07-16 Anordnung zur Behandlung von Materialien mit Mikrowellen
PCT/EP2016/063840 WO2017008986A1 (fr) 2015-07-16 2016-06-16 Dispositif pour pour le traitement de matériaux par micro-ondes

Publications (2)

Publication Number Publication Date
EP3323273A1 true EP3323273A1 (fr) 2018-05-23
EP3323273B1 EP3323273B1 (fr) 2020-09-02

Family

ID=56194462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16731559.7A Active EP3323273B1 (fr) 2015-07-16 2016-06-16 Dispositif pour le traitement de matériaux par micro-ondes

Country Status (4)

Country Link
EP (1) EP3323273B1 (fr)
CN (1) CN108141931A (fr)
DE (1) DE102015111555B3 (fr)
WO (1) WO2017008986A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018123154A1 (de) * 2018-09-20 2020-03-26 Joyson Safety Systems Germany Gmbh Verfahren und Anordnung zum Herstellen eines wärmebehandelten Gassackpakets
DE102018123261A1 (de) 2018-09-21 2020-03-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Aufbringen von Leitermaterial auf Substraten
CN113196874A (zh) * 2018-12-21 2021-07-30 德国爱德华洁兰赫公司 具有单模施加器的交联设备
DE102020125375A1 (de) 2020-09-29 2022-03-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Verfahren zum Heizen von Objekten mit Mikrowellen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687895A (en) * 1984-07-30 1987-08-18 Superwave Technology, Inc. Conveyorized microwave heating system
US4746968A (en) * 1987-03-30 1988-05-24 Mcdonnell Douglas Corporation Combined microwave and thermal drying apparatus
EP0287760A1 (fr) * 1987-04-15 1988-10-26 HERMANN BERSTORFF Maschinenbau GmbH Dispositif pour le chauffage, la pasteurisation ou la stérilisation uniforme et rapide de vivres ou similaires
DE3811063A1 (de) * 1988-03-31 1989-10-19 Berstorff Gmbh Masch Hermann Vorrichtung zum kontinuierlichen erwaermen, pasteurisieren oder sterilisieren von lebensmitteln oder dergleichen
US5298707A (en) * 1991-06-07 1994-03-29 Tgtbt, Ltd. Apparatus for preparing fat free snack chips
JP3077879B2 (ja) * 1994-02-15 2000-08-21 インターナショナル・ビジネス・マシーンズ・コーポレ−ション ウェブ・タイプの定量された処理材料にマイクロ波エネルギーを印加するための装置及び方法
DE20018925U1 (de) * 2000-11-07 2002-03-14 Püschner GmbH & Co. KG, 28790 Schwanewede Vorrichtung zum Trocknen von Presskörpern aus Verbundwerkstoffen
CN101076221B (zh) * 2002-05-08 2011-08-31 Btu国际公司 多个辐射源的等离子体产生和处理
US7227097B2 (en) * 2002-05-08 2007-06-05 Btu International, Inc. Plasma generation and processing with multiple radiation sources
DE102008001637B4 (de) * 2008-05-07 2010-07-22 Imenokhoyev, Ivan, Dr. Mikrowellenofen zur thermischen Behandlung von Gütern
DE102013009064B3 (de) * 2013-05-28 2014-07-31 Püschner GmbH + Co. KG Mikrowellen-Durchlaufofen

Also Published As

Publication number Publication date
EP3323273B1 (fr) 2020-09-02
WO2017008986A1 (fr) 2017-01-19
DE102015111555B3 (de) 2016-09-29
CN108141931A (zh) 2018-06-08

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