EP0767891B1 - Vorrichtung zur temperaturbehandlung von produkten durch mikrowellenbestrahlung - Google Patents
Vorrichtung zur temperaturbehandlung von produkten durch mikrowellenbestrahlung Download PDFInfo
- Publication number
- EP0767891B1 EP0767891B1 EP94920883A EP94920883A EP0767891B1 EP 0767891 B1 EP0767891 B1 EP 0767891B1 EP 94920883 A EP94920883 A EP 94920883A EP 94920883 A EP94920883 A EP 94920883A EP 0767891 B1 EP0767891 B1 EP 0767891B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating chamber
- products
- accordance
- microwaves
- wall
- 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.)
- Expired - Lifetime
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 238000001035 drying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/062—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated
- F27B9/066—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated heated by lamps
-
- 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
- H05B6/6402—Aspects relating to the microwave cavity
-
- 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
- H05B6/707—Feed lines using waveguides
-
- 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 device for temperature treatment of products by using microwave radiation a heating chamber for receiving the products, the Microwaves with a device in the heating chamber can be coupled in and the heating chamber at least one that Has microwave reflecting reflection wall.
- Such a device (hereinafter also called oven) is for drying, heating or firing (sintering) various Products known.
- Ceramic products all kinds of conventional ceramic goods, such as porcelain, but also special ceramic products, such as carbon products, ferrites or refractory ceramic products.
- discontinuous ovens become where the products are brought into the boiler room are, which is then closed (DE-B 1 097 594). After the heat treatment, that according to DE-B 1 097 594 spherical oven opened again and the products are taken.
- the Oven has a tubular shape.
- Another tubular one Reflection wall with radially arranged devices for Coupling of microwaves limits the inside of the oven.
- Such an oven is at the oven inlet and outlet take special measures to prevent the exit of the To prevent microwaves.
- "Microwave traps” known, which according to FR-A 911 170 according to Art a "door” are designed. Even when using this However, the door must "microwave trap” to feed new ones Products or to remove the products from the Heating chamber should be opened from time to time, taking it in turn, undesirable microwaves emerge can. In addition, these measures make one more expensive corresponding oven.
- the invention has for its object a device of the type mentioned in such a way that a optimal use of microwave energy within the heating chamber is guaranteed, in particular also for continuously operating ovens and regardless of the Shape and size of the products to be treated.
- the invention is based on the finding that this goal in a surprisingly simple way thanks to special training and geometric arrangement of reflection surfaces for the microwaves are reached within the heating chamber can.
- the invention is based on the consideration that the corresponding Form and arrange the reflective surface (s) in such a way so that's about a device in the heating chamber coupled microwaves only in the of the (the) reflecting surface (s) reflecting limited space be so that optimal use of microwave energy can be reached while avoiding corresponding losses.
- the invention proposes in its most general embodiment for this purpose a device of the type mentioned kind before, in which the reflection wall in several, spaced mutually arranged wall sections is divided and the Wall sections each - from the interior of the heating chamber seen - has at least two concave sections of curvature, which are arranged so that the over the device coupled microwaves only in the of the Reflection wall limited space to be reflected.
- the partial feature of a concave curvature Reflection wall is particularly important because of this Way, especially in a continuous oven, the Reflection wall can be designed so that also in Microwaves reflected towards the oven inlet and outlet be reflected back and not over the The oven inlet and outlet can escape.
- the reflection wall used to reflect the microwaves designed so that the microwave radiation components at most along the one through an oven -Exit defined level and thus the Microwaves exit from the corresponding openings is prevented or at least largely reduced.
- the microwave radiation components of the reflection wall so reflected that, for example, it continuous oven at the entrance or exit essentially extend parallel to the opening area or move.
- design according to the invention has significant advantages areas higher than above the reflection wall Energy densities can be adjusted, the too treating products preferably in these areas of Heating chamber are arranged or the heating chamber run through.
- the wall sections of the reflection wall can after a Embodiment to be arranged symmetrically to one another, as can be seen in detail from the following Figure description results.
- the wall sections are in their position relative to each other designed to be adjustable, for example depending on the size of the products to be treated - the areas highest energy density with one and the same furnace from case to be set individually for the case.
- the division of the reflection wall into several, spaced mutually arranged wall sections can in particular a continuous furnace, such as a tunnel furnace different ways:
- a continuously operating furnace is usually in different zones divided, for example in one Heating, burning and cooling zone. These can be immediate merge or run at a distance from each other.
- the heating zone can be spaced three mutually arranged reflection wall sections be formed while the firing zone is a single one Reflection wall, for example in the manner of a "cylinder" and the cooling zone in turn analogous to the heating zone is trained.
- the reflection walls but in each case - viewed from the interior of the heating chamber - concave Surface sections on to an unwanted microwave transition from one zone to another respectively out of the heating and cooling zone into the environment avoid
- the reflection walls are, for example Oven entrance or exit "arched inwards” educated.
- the reflection walls are arranged in Dependence on the direction of the injected Microwaves to reflect only in the area ensure the reflection walls.
- the invention provides for everyone Oven zone has its own facility for coupling the Assign microwaves, and if necessary the power and / or Switch-on time assigned by the heating chamber or its zones Training microwave generators to be regulable or controllable. This way - depending on the treating products - for example a very precise Temperature profile in the direction of transport of the products at one continuously operating furnace can be set.
- the device can also be designed in this way be that they are drying or sintering only of products.
- Microwaves can be heated when using microwaves a frequency is applied that the resonance frequency comes as close as possible to the ceramic material.
- the resonance frequency of porcelain for example, is included about 400 GHz.
- Products are frequencies well above 2.45 GHz necessary.
- Good results are already with a frequency of about 28 GHz.
- the most economical results can be used with microwave frequencies between 200 and Reach 400 GHz.
- the Treatment time when heated by microwaves conventional stoves that use fossil fuels or be heated electrically. Because of the gentle Temperature treatment also becomes possible, for example at a glaze before firing or sintering to apply and the products in a so-called penetration to manufacture.
- the device is one according to the invention Continuous microwave oven in which to be transported Products 8, here: porcelain, in the direction of transport (arrow 3) on a transport device 7 from an oven entrance 5 an oven exit 6 transported through a heating chamber 2 becomes.
- the heating chamber 2 is divided into four heating zones 2a-d, which are arranged one behind the other in the transport direction 3 and - according to Figure 2 - an approximately square cross section have, which is limited by an insulated housing 4.
- Zones 2a-d Arranged areas can either be in front of or zone located behind or "free Zones "form separate process steps around the products to subjugate.
- the transport device 7 here consists of a Roller conveyor on which plates are arranged on which the Products are put on.
- the transport device 7 consists of a microwave-permeable Material, here: plastic.
- the individual zones 2a-d and the transport device 7 are through regulation / control lines with a control center 9 connected.
- Each zone 2a-d is a microwave generator 11 (magnetron) assigned by a microwave coupling device 12 with the associated heating zone 2a-d connected is.
- the microwave generators 11 and Coupling devices 12 are located here in the ceiling area the associated heating zones 2a-d.
- Figure 2 shows that the coupling device 12 through the associated ceiling is led.
- Reflection wall sections 13a-c made of a microwave impervious Material, here: metal, arranged, namely essentially symmetrical at an angle of 120 ° to each other.
- the wall sections 13a-c are - from the interior viewed from the heating chamber 2a - concave in two directions curved, parallel to the direction of transport 3 and between the end areas perpendicular to the direction of transport 3. It follows that the wall sections 13a-c - in the transport direction 3 viewed - at the front and rear end with the corresponding sections of curvature approach. The shape resembles that of a concave mirror.
- the microwaves are transmitted as a bundled beam 16 over the Device 12 secantial into the heating chamber 2a.
- Reference number 14 denotes the (concave) Curvature of the wall sections 13a-c and designated Curvature 14 is sized and shaped so that the microwave beam components reflected at wall portions 13a-c itself within two, one axial Radial planes RE having a distance B transverse to the central longitudinal axis 15 move the heating chamber 2a and in the area of this Radial planes RE perpendicular (perpendicular) to the central longitudinal axis 15 or parallel to the radial planes RE run.
- the radiation components are on it prevented by the heating chamber 2a on the input and output sides (viewed in transport direction 3) limit To exit levels. Aside from unavoidable small stray radiation remains the radiation components and thus the microwave energy in the heating chamber 2a "caught" without taking additional measures such as "Scots” or "fools” is required.
- the invention Design also prevents radiation components in Adjacent heating chambers and the local ones Falsify conditions.
- the shape and size of the curvature 14 is supplementary Please note the following: Taking into account a technically unavoidable small scatter of the Beam 16 with that shown schematically in Figure 3 Scattering angle a between beam components 16a results also for the reflected beam components Scattering angle (not shown) with outer reflected Beam components 16b.
- a wall section of the Reflection wall 13 also have a cylindrical shape, wherein at least at the front ends concave, inwards extending curvature sections are provided.
- the wall sections 13a-c perpendicular to the transport direction 3, that is in the circumferential direction to form a concave curvature which makes the Concentration of the microwaves on the cross section of the boiler room improved and a homogeneous field distribution of microwave energy is made possible.
- the wall sections 13, 13a-c with grooves or webs (not shown) to be provided in the direction of the central longitudinal axis 15 run and the flanks are formed so that they by a reflection directed transversely to the central longitudinal axis 15 homogeneous within the desired radiation field Effect field distribution.
- the attachment of the wall sections 13a-c is in detail not shown.
- the attachment can in principle any way.
- the attachment should preferably be such that the position of the Wall sections 13a-c is adjustable.
- the Fasteners are attached to the scaffold with their other end 4 set or guided through the scaffold 4, so that they from are manipulable on the outside.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Tunnel Furnaces (AREA)
Abstract
Description
- Figur 1:
- eine als Durchlaufofen gestaltete Vorrichtung in einer Seitenansicht
- Figur 2:
- einen vertikalen Längsschnitt durch die Vorrichtung nach Figur 1,
- Figur 3:
- einen Schnitt entlang der Linie III-III gemäß Figur 2,
- Figur 4:
- eine alternative Ausführungsform zur Anordnung von Reflexions-Wandabschnitten, im Schnitt,
- Figur 5:
- eine weitere Ausführungsform eines Wandabschnittes einer Reflexionswand, im Schnitt.
Claims (9)
- Vorrichtung zur Temperaturbehandlung von Produkten (8) durch Mikrowellenbestrahlung mit einer Heizkammer (2) zur Aufnahme der Produkte (8), wobei die Mikrowellen (16) mit einer Einrichtung (12) in die Heizkammer (2) einkoppelbar sind und die Heizkammer (2) mindestens eine, die Mikrowellen (16) reflektierende Reflexionswand (13) aufweist, dadurch gekennzeichnet, daß die Reflexionswand (13) in mehrere, beabstandet zueinander angeordnete Wandabschnitte (13a-c) unterteilt ist und die Wandabschnitte (13a-c) jeweils - vom Innenraum der Heizkammer (2) aus gesehen - mindestens zwei konkave Krümmungsabschnitte (14) aufweisen, die so angeordnet sind, daß die über die Einrichtung (12) eingekoppelten Mikrowellen ausschließlich in den von der Reflexionswand (13) begrenzten Raum reflektiert werden.
- Vorrichtung nach Anspruch 1, bei der die Wandabschnitte (13a-c) symmetrisch zueinander angeordnet sind.
- Vorrichtung nach Anspruch 1 oder 2, bei der die Wandabschnitte (13a-c) in ihrer Position zueinander einstellbar sind.
- Vorrichtung nach einem der Ansprüche 1 bis 3 mit einer, einen Eingang (5) und einen Ausgang (6) aufweisenden tunnelförmigen Heizkammer (2), (2a-d), durch die die Produkte (8) auf einer Transporteinrichtung (7) zwischen Ein- und Ausgang (5, 6) transportierbar sind.
- Vorrichtung nach Anspruch 4, bei der die Heizkammer (2, 2a-d) in mehrere, in Transportrichtung (3) der Produkte (8) hintereinander angeordnete Zonen (2a-d) unterteilt ist, die jeweils mit mindestens einer eigenen Reflexionswand (13, 13a-c) ausgebildet sind.
- Vorrichtung nach Anspruch 5, bei der jeder Zone (2a-d) eine eigene Einrichtung (12) zur Einkopplung der Mikrowellen zugeordnet ist.
- Vorrichtung nach einem der Ansprüche 1-6, bei der die Leistung und/oder Einschaltzeit von der Heizkammer (2) oder deren Zonen (2a-d) zugeordneten Mikrowellengeneratoren (11) regel- oder steuerbar ist.
- Vorrichtung nach einem der Ansprüche 5-7, bei der mindestens zwei Zonen (2a-d) der Heizkammer (2) beabstandet zueinander angeordnet sind.
- Vorrichtung nach einem der Ansprüche 4-8, bei der die Transporteinrichtung (7) so angeordnet ist, daß die darauf transportierten Produkte (8) den Bereich höchster Mikrowellen-Energiedichte durchlaufen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4313806A DE4313806A1 (de) | 1993-04-27 | 1993-04-27 | 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 |
PCT/DE1994/000819 WO1996002802A1 (de) | 1993-04-27 | 1994-07-15 | Vorrichtung zur temperaturbehandlung von produkten durch mikrowellenbestrahlung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0767891A1 EP0767891A1 (de) | 1997-04-16 |
EP0767891B1 true EP0767891B1 (de) | 1998-04-08 |
Family
ID=6486526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94920883A Expired - Lifetime EP0767891B1 (de) | 1993-04-27 | 1994-07-15 | Vorrichtung zur temperaturbehandlung von produkten durch mikrowellenbestrahlung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5994686A (de) |
EP (1) | EP0767891B1 (de) |
JP (1) | JPH10504931A (de) |
AU (1) | AU7182294A (de) |
DE (1) | DE4313806A1 (de) |
ES (1) | ES2115956T3 (de) |
WO (1) | WO1996002802A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19633245C1 (de) * | 1996-08-17 | 1997-11-27 | Karlsruhe Forschzent | Hochmodiger Mikrowellenresonator für die Hochtemperaturbehandlung von Werkstoffen |
DE19633247C2 (de) * | 1996-08-17 | 1999-09-09 | Karlsruhe Forschzent | Mikrowellenofen zur Sinterung von Sintergut und Verfahren zur Sinterung von Sintergut mit einem solchen Ofen |
DE19700140A1 (de) * | 1997-01-04 | 1998-07-09 | Gero Hochtemperaturoefen Gmbh | Brennofen für die Hochtemperaturbehandlung von Materialien mit niedrigem dielektrischem Verlustfaktor |
DE69832588T2 (de) * | 1998-04-11 | 2006-08-10 | Daewoo Electronics Corp. | Mikrowellenherd mit kreisförmigen konkave Portionen in einem Hohlraum zum Verteilen der Mikrowellen |
DE10081829D2 (de) * | 1999-06-24 | 2001-12-13 | Karlsruhe Forschzent | Mikrowellenmodul eines Mikrowellensystems für die thermische Prozessierung |
US6222170B1 (en) * | 1999-08-24 | 2001-04-24 | Ut-Battelle, Llc | Apparatus and method for microwave processing of materials using field-perturbing tool |
US6837278B2 (en) * | 2002-03-13 | 2005-01-04 | Kim William B | Method for making a blanket having a high pile density and a blanket made therefrom |
US6647601B2 (en) * | 2002-03-13 | 2003-11-18 | William B. Kim | Method for making a blanket having a high pile density and a blanket made therefrom |
DE10329412B4 (de) * | 2003-07-01 | 2005-09-22 | Forschungszentrum Karlsruhe Gmbh | Hochmodiger Mikrowellenresonator zur thermischen Prozessierung |
DE10329411B4 (de) * | 2003-07-01 | 2006-01-19 | Forschungszentrum Karlsruhe Gmbh | Mikrowellenresonator, eine aus einem solchen Mikrowellenresonator modular aufgebaute Prozessstraße, ein Verfahren zum Betreiben und nach diesem Verfahren thermisch prozessierte Gegenstände/Werkstücke mittels Mikrowelle |
US7383875B2 (en) * | 2003-07-09 | 2008-06-10 | Canon Kabushiki Kaisha | Heating/cooling method, manufacturing method of image displaying apparatus, heating/cooling apparatus, and heating/cooling processing apparatus |
US20050093209A1 (en) * | 2003-10-31 | 2005-05-05 | Richard Bergman | Microwave stiffening system for ceramic extrudates |
EP2014394A1 (de) * | 2007-07-13 | 2009-01-14 | Alcan Technology & Management Ltd. | Verfahren, bei dem durch Mikrowellen erwärmtes Metallpulver stranggepresst wird |
DE102010053169A1 (de) | 2010-04-19 | 2011-10-20 | Jenoptik Katasorb Gmbh | Mikrowellenreaktor zu mikrowellenunterstützten katalytischen Stoffumsetzung eines flüssigen oder gasförmigen Mediums |
DE202010005946U1 (de) | 2010-04-19 | 2010-08-19 | Jenoptik Katasorb Gmbh | Mikrowellenreaktor zur mikrowellenunterstützten katalytischen Stoffumsetzung |
DE102010015768B4 (de) | 2010-04-19 | 2014-11-20 | Jenoptik Katasorb Gmbh | Mikrowellenreaktor zur mikrowellenunterstützten katalytischen Stoffumsetzung |
US20120160840A1 (en) | 2010-12-23 | 2012-06-28 | Eastman Chemical Company | Wood heater with alternating microwave launch locations and enhanced heating cycles |
DE102011051542B4 (de) | 2011-07-04 | 2013-04-25 | Jenoptik Katasorb Gmbh | Mikrowellenreaktor zur mikrowellenunterstützten Erwärmung eines Mediums |
WO2015192890A1 (en) * | 2014-06-17 | 2015-12-23 | Jolyan Holding Sa | Drying station of ceramic products and drying method thereof |
NO345369B1 (en) | 2017-03-27 | 2021-01-04 | Scanship As | Microwave pyrolysis reactor I |
CN111501264B (zh) * | 2020-04-28 | 2023-01-06 | 中山市普洛斯智能设备科技有限公司 | 用于织带固色机的微波加热装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR911170A (fr) * | 1945-05-30 | 1946-07-01 | Procédé et appareil d'utilisation de l'énergie rayonnante | |
US2543053A (en) * | 1947-12-01 | 1951-02-27 | Int Standard Electric Corp | Radiant energy high-temperature heating apparatus |
DE965594C (de) * | 1955-03-20 | 1957-06-13 | Elektronik G M B H Deutsche | Einrichtung zur Waermebehandlung organischer Substanzen im elektromagnetischen Feld sehr kurzwelliger Schwingungen |
CH369836A (de) * | 1959-07-15 | 1963-06-15 | Therma Ag | Vorrichtung zur Erwärmung von Stoffen mittels Hochfrequenzenergie |
US3281727A (en) * | 1964-05-12 | 1966-10-25 | Kenneth E Niebuhr | Traveling wave high power simulation |
FR1597226A (de) * | 1968-12-27 | 1970-06-22 | ||
US4631380A (en) * | 1983-08-23 | 1986-12-23 | Durac Limited | System for the microwave treatment of materials |
JPS63294685A (ja) * | 1987-05-27 | 1988-12-01 | Hitachi Ltd | マイクロ波加熱装置 |
GB8822708D0 (en) * | 1988-09-28 | 1988-11-02 | Core Consulting Group | Improved microwave-powered heating device |
DE4032496A1 (de) * | 1989-10-12 | 1991-04-25 | Wieneke Franz | Einrichtung zur applikation von mikrowellen hoher intensitaet |
JPH0754744B2 (ja) * | 1990-09-26 | 1995-06-07 | 財団法人ファインセラミックスセンター | マイクロ波加熱装置及びマイクロ波加熱方法 |
FR2714468B1 (fr) * | 1993-12-28 | 1996-04-26 | Prolabo Sa | Appareil de traitement en milieu humide simultanément sur une pluralité d'échantillons et utilisation dudit appareil. |
US5532462A (en) * | 1994-04-29 | 1996-07-02 | Communications & Power Industries | Method of and apparatus for heating a reaction vessel with microwave energy |
-
1993
- 1993-04-27 DE DE4313806A patent/DE4313806A1/de not_active Withdrawn
-
1994
- 1994-07-15 ES ES94920883T patent/ES2115956T3/es not_active Expired - Lifetime
- 1994-07-15 US US08/776,302 patent/US5994686A/en not_active Expired - Fee Related
- 1994-07-15 AU AU71822/94A patent/AU7182294A/en not_active Abandoned
- 1994-07-15 EP EP94920883A patent/EP0767891B1/de not_active Expired - Lifetime
- 1994-07-15 JP JP8503540A patent/JPH10504931A/ja not_active Ceased
- 1994-07-15 WO PCT/DE1994/000819 patent/WO1996002802A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE4313806A1 (de) | 1994-11-03 |
ES2115956T3 (es) | 1998-07-01 |
US5994686A (en) | 1999-11-30 |
WO1996002802A1 (de) | 1996-02-01 |
EP0767891A1 (de) | 1997-04-16 |
AU7182294A (en) | 1996-02-16 |
JPH10504931A (ja) | 1998-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0767891B1 (de) | Vorrichtung zur temperaturbehandlung von produkten durch mikrowellenbestrahlung | |
DE2232065C3 (de) | Mikrowellen-Erhitzungseinrichtung | |
DE3210676C2 (de) | Verfahen zum Strahlungserwärmen von Vorformlingen | |
DE69318340T2 (de) | Mikrowellenofen | |
DE3650431T2 (de) | Ofen für wärmebehandlung. | |
DE2757710C2 (de) | Einrichtung zur Mikrowellenerhitzung von Substanzen | |
DE1807504C3 (de) | ||
DE3907248C2 (de) | Muldentrockner für Schüttgut, insbesondere Asphaltgranulat | |
DE3423521A1 (de) | Verfahren zur aufbereitung und herstellung von asphaltmischgut unter wiederverwendung alten asphaltmaterials sowie eine vorrichtung zur durchfuehrung des verfahrens | |
DE2928846A1 (de) | Verfahren zum herstellen von - insbesondere scheibenfoermigen - formstuecken aus einem schleifmaterial | |
EP0270043A2 (de) | Verfahren zur Wärmebehandlung von insbesondere im wesentlichen flachen Körpern aus keramischem Material und Durchlaufofen für die Durchführung des Verfahrens | |
DE19738882C1 (de) | Mikrowellen-Durchlaufofen | |
DE3025801C2 (de) | Tunnelofen zum Brennen von keramischen Werkstücken | |
EP0447663A1 (de) | Durchlaufofen zur Wärmebehandlung von Werkstücken | |
DE102016119463A1 (de) | Durchlaufofen zur kontinuierlichen Erwärmung einer Pressgutmatte | |
DE3131200A1 (de) | Metallheizofen | |
CH669658A5 (de) | ||
DE2512485A1 (de) | Verfahren zum brennen von keramischen produkten in einem diskontinuierlichen ofen, sowie brennofen zur durchfuehrung des verfahrens | |
DE19648366C1 (de) | Anlage zur thermischen Behandlung von Produkten | |
DE69200155T2 (de) | Ofen zum Tempern von insbesondere Glastafeln oder ähnlichem. | |
DE4202749C2 (de) | Trommelofen | |
DE102013114526A1 (de) | Ofen zum Erwärmen von Metallgütern | |
DE3437237C2 (de) | ||
EP0851712A2 (de) | Ofen zur Hochtemperatur-Wärmebehandlung | |
DE2410105C3 (de) | Mikrowellenherd |
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: 19960420 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH ES FR GB IT LI NL PT SE |
|
17Q | First examination report despatched |
Effective date: 19970422 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH ES FR GB IT LI NL PT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 19980408 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
ITF | It: translation for a ep patent filed | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2115956 Country of ref document: ES Kind code of ref document: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 19980708 |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19980701 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 19980629 |
|
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 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: HANS RUDOLF GACHNANG PATENTANWALT Ref country code: CH Ref legal event code: AEN Free format text: DAS PATENT IST AUFGRUND DES WEITERBEHANDLUNGSANTRAGS VOM 13.04.1999 REAKTIVIERT WORDEN. |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20040630 Year of fee payment: 11 Ref country code: GB Payment date: 20040630 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20040720 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20040723 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20040726 Year of fee payment: 11 |
|
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 NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050715 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050715 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050716 |
|
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: 20050731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060116 |
|
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: 20050715 |
|
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: 20060331 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20060331 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20050716 |