EP0554559B1 - Verfahren und Einrichtung zur Mikrowellenbeaufschlagung, insbesondere zum Trocknen - Google Patents
Verfahren und Einrichtung zur Mikrowellenbeaufschlagung, insbesondere zum Trocknen Download PDFInfo
- Publication number
- EP0554559B1 EP0554559B1 EP92121868A EP92121868A EP0554559B1 EP 0554559 B1 EP0554559 B1 EP 0554559B1 EP 92121868 A EP92121868 A EP 92121868A EP 92121868 A EP92121868 A EP 92121868A EP 0554559 B1 EP0554559 B1 EP 0554559B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- microwave
- drive
- loads
- door
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
-
- 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
- H05B6/80—Apparatus for specific applications
-
- 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 continuous process for microwave exposure, especially for drying microwaves at least partially absorbent materials in cycle operation, in particular for microwave exposure to stacked piece goods, each in one work cycle at least two separate loads of treatment material, from at least one compared to at least one at the start of the measure another cargo or multiple of them with respect to Duration and / or intensity of different microwave exposure experienced a common microwave field get abandoned.
- a method is for example from DE-A-31 19 979 known.
- the subject of the invention also includes one Establishment for carrying out such a procedure.
- microwaves Process for heating or drying materials using microwaves are common. requirement is a sufficient level of absorbency for a Microwave field of the frequency used. For in This is without certain materials containing water given further, which is why the drying of such materials represents a preferred microwave application area.
- the microwave In many heating applications, but especially most Drying applications, the microwave is in competition with conventional energy sources or forms of transmission (Hot air, short-wave heat radiation, direct heat conduction). It is therefore crucial for microwave use in an egg case the question of whether it succeeds the specific potential benefit the microwave in terms of faster, more even and gentle on materials Introducing the energy into the material too realize. In addition, the energy efficiency is a important selection criterion. The successful exploitation of the Microwave properties depend on the process and Appliances that match the peculiarities of the microwave as well as the Application conditions are sufficiently adapted.
- DE-A-31 19 979 describes a quasi-continuous microwave drying process known, with one load each of the item to be treated without replacement in successive Step movements through a voluminous microwave chamber as is well known due to multiple reflection and superimposition more or less chaotic microwave field is performed. Because here the non-uniform intensity distribution of the field depends on the position of the absorbent material in the chamber, there are hardly reproducible conditions, and that different areas of the property go through different, practically indefinable field intensities. An optimization of the Absorption conditions with even drying of the goods therefore faces great difficulties.
- the object on which the invention is based is therefore in the creation of a process and associated facilities, which is an increased efficiency of the working process, in particular an increased heating or drying rate just as efficient and with gentle material treatment enable.
- the task also sells itself on an improvement in efficiency and operational safety or achieving a comparatively simple and inexpensive to manufacture Set up the structure of the facility.
- the work cycle duration was a constant 6 minutes.
- the total duration of treatment for each load was therefore 12 minutes.
- the duration of the transport breaks was due to largely automated operation with some Seconds negligible.
- Fig.1 the drying progress is in successive Work cycles of time T in time congruent with each other arranged diagrams separately for the entrance place PL1 and the starting point PL2 is shown.
- Inlet E and outlet A of the Charges and their shift between input and Starting point are indicated by vertical arrows.
- the device comprises a type MK microwave chamber "Multimode resonance room” with a relatively large number of Small-power magnetrons in a grid-like distribution on two mutually transversely to the direction of travel (arrow P) opposite chamber walls are arranged.
- the coupling the microwave energy into the chamber takes place immediately (without Adjustment waveguide) through the over the inner surface of the Chamber wall protruding antenna domes ADM of the magnetrons.
- the Metallic chamber walls form a reflective on all sides limited resonance space in which by multiple reflection and superimposition of the coupled waves essentially stationary microwave field with mode and frequency splitting trains. This is the formation of pronounced vibration nodes and bellies held down.
- Loading doors LT arranged. Basically, such Cope with all gas exchange processes with just one door, although two or more doors are often more advantageous. It is further understood that, if necessary, also several such microwave chambers together to form a complex High performance system functional and / or spatially constructive can be united.
- the transport device includes Recording places PL1, PL2 for two loads LD1 and LD2 from Treatment material. These admission places are inside the microwave chamber in the transport direction P one behind the other arranged.
- the drive of the transport device can be more conventional Be fashioned and is therefore not shown in detail. It is best known with a clock control device Provide type for workflow automation. How 5 can be seen in the example with regard to the cyclical positioning of the charges in the inventive Method optical position detectors SD provided the Treatment rest positions of the charges are assigned.
- the Charges in the example consisting of a large number of relatively small units FKR, here as mentioned mold cores, are in containers BH1 and BH2 next to and on top of each other each housed their own recordings.
- the containers are trained as a frame and exist essentially from thin profile bars or tubes, so that the coupling of the microwave field with the material stacks not disturbing is impaired, even if the frame frames made of materials high electrical conductivity or dielectric constant consist.
- Containers with metallic profile bars and tubes are used without any noticeable shielding of the treatment material or an undesirably high loss absorption occurred.
- transport carriers TT is provided, the shape of the receiving locations PL1, PL2 are and have holding means for cargo containers.
- Carriers facilitate the change of charge and are convenient in the Circuit from the outlet to the inlet of the microwave chamber, independence from the various processing methods to reach the treated loads.
- the feed rollers VW of the transport device are included Drive shafts AW and support axles TA provided in such Areas of the chamber walls that are comparatively weak Field areas are coupled and carry only low wall currents, led through wall recesses into the field-free outdoor space and coupled here with conventional drive means, not shown or are stored.
- E.g. can be a common one for one chamber side Chain drive may be provided.
- they are Feed-through recesses of the drive shafts or support axles are arranged in wall areas that protrude longitudinally extend lower inner edges of the chamber.
- the to the end sections neighboring, still inside the chamber Sections of the drive shafts or support axles are included in Direction to the adjacent chamber wall in diameter increasing field influencing elements, here conical
- Roller end sections WE made of electrically conductive material provided to avoid disturbing field concentrations.
- Closing surfaces SF of the chamber doors and borders UR of the associated wall openings extend in the open position of the doors in parallel planes, the door body to the plane of their Closing surface between a release position and a cover position longitudinally displaceable with respect to the chamber opening and are additionally mounted on the chamber housing so that they can be moved laterally.
- the Edges UR are common with microwave seals MD Mistake.
- the door body is in the cover position already almost in front of the wall opening in question, but still at a distance from the border or the microwave seal. This enables the doors to move easily and quickly on most of their long displacement path between Release and cover position.
- 3 is the input side Chamber door in its cover position, in Fig. 5 in its closed position indicated.
- the wedge gears in the example are self-locking, however in a free-running position disengageable door drive means TAM provided. They are shown in detail in FIGS. 4 and 5 shown.
- Each guide sleeve FH is the door body TK using cross guide bolts QB in the direction transverse to the door plane or to Longitudinal direction of movement suspended.
- a DRF compression spring ensures the position is secured of the door body in the transverse direction, namely through Preload against an abutment WDL on the cross guide pin QB.
- Such a longitudinal guide can be seen in FIG Way at the top and bottom border portions of the Chamber opening available.
- the guide sleeves each supported on a SH rail FH jointly carry a rack ZS, which is parallel to the rail SH and essentially over its entire length extends.
- the rack ZS is one TMO door drive motor, preferably fixed to the housing a self-locking geared motor.
- the door drive motor TMO is in relation to the chamber housing by means of a joint GK around a direction of longitudinal displacement the door parallel axis pivoted and further - also articulated - with an upward from the Drive housing AGH connected lead screw ZSP connected.
- a hand-operated, for example Release nut AMT located on the top of a
- the KR collar is supported on the AGH housing. That way it can Pinion disengaged from the rack ZS and thus the self-locking Door operator can be transferred to a release position. This allows the door to be opened in the event of a power failure (of course if the microwave power supply is not in use) by hand to open.
- the fresh air is supplied in the Chamber interior arranged in the side walls of the chamber Grid inserts GES, each of which is the antenna dome ADM of a magnetron surrounds.
- the air flow supplied therefore serves at the same time the magnetron cooling.
- For the steam extraction is one to the Connected central suction channel SGK provided.
- the treatment chamber MK shown in FIG. 6 corresponds to FIG numerous features of the embodiment according to Fig.1, what by corresponding reference symbols are clarified. In this regard, there is no need for another explanation.
- As an advantageous special feature of the embodiment according to Fig. 6 are again for the charges LD1, LD2 each of a large number of relatively small units FKR - Transport frames TG1, TG2 provided with their im essentially flat or straight longitudinal beams formed bottom directly with a correspondingly dimensioned Transport device TE can interact.
- support frames are in this facility usual foot elements protruding relatively far down usable what the inclusion of the gas exchange operations benefits in the operational transport process. The one for this decisive features of the transport device and the supporting frames are explained in more detail.
- the Transport device also with this design a multiple arrangement of feed rollers VW.
- the drive shafts AW and Supporting axles TA inside the chamber interior in a drive housing AH or in a bearing housing LH.
- the corresponding Shaft or axis bushings are known per se and therefore sufficient funds not shown microwave-proof, so that on sharp-edged elements no disturbing discharges or within the above-mentioned housings Heating can occur.
- a microwave sealant come e.g. on the one hand with the shafts or axes and on the other hand electrically conductive contacts with the housings Rings or lips into consideration.
- FIG. 8 shows in cross section of the transport device box-shaped, elongated drive housing AH a Sprocket arrangement KRA, with which the feed rollers with each other and coupled with an electric motor M.
- FIGS. 7 and 8 The construction of the feed roller arrangement shown in FIGS. 7 and 8 with associated, in sufficient microwave density Housing housed drive or. Storage means inside the microwave chamber offers significant advantages. So the chamber walls of voluminous waves or Axle bushings kept clear and e.g. in terms of Arrangement and design of microwave generators, waveguides, Coupling elements, power supplies, auxiliary units such as cooling devices, cooling air ducts and the like be designed. There is also one in the interior of the chamber significantly improved constructive freedom of movement, above all with regard to the design of the transport device. So can e.g. the axial length of the feed rollers and thus the width the transport device regardless of where appropriate Chamber dimensions to be selected according to the microwave requirements kept smaller and the conditions of the treatment material or associated mounts, brackets and the like.
- a design of the drive or Bearing housing in the form of an elongated one, along the continuous path arranged boxes proved.
- the example is on one Long side of the feed roller arrangement is parallel to one another Continuous drive housing box AH and on the other long side of the feed roller arrangement is the same Bearing housing box provided.
- With larger ones Longitudinal dimensions are advantageously divided into successive, if necessary also with a mutual longitudinal distance arranged housing boxes into consideration.
- the outer side boundaries of the drive or bearing housing boxes are - measured transversely to the continuous path - at a distance of the adjacent chamber walls or from the side edges of the Door opening arranged. This favors a relatively intense one Formation of the microwave fields in the side area of the transport device and thus a more even application of the Treatment material.
- the transport racks shown in Figures 6 and 8 are TG1, TG2 which are provided on their underside with a support frame TRR which arranged at the outer corners of the frame, protruding downwards Has foot elements FE.
- This is a common one for many transport and throughput treatment functions for small piece goods advantageous frame construction.
- Fig. 7 and 8 it can be seen in this connection that the width of the Transport device TE with feed rollers VW and lateral Drive or bearing housing AH, LH within the clear width lies between the foot elements FE projecting downwards.
- the foot elements are located next to the box-shaped ones AH or LH housings.
- the transport frames are therefore supported with longitudinal spars of their support frame TRR directly on the Feed rollers VW, in such a way that each support frame is always supported on a plurality of rollers.
- This is in Figure 7 by a dash-dotted line in plan view Support frames TRR illustrated. This will make a flawless one Passage through the transport racks enables without Transition between the transport routes outside and inside the chamber special auxiliary racks, bridging skids or the like. would have to be attached and removed again.
- each chamber door is between a release position and a cover position with respect to the Chamber opening can be moved lengthways and can also be moved sideways stored on the chamber housing. Is in the cover position the door body is almost in front of the wall opening in question, but still at a distance from their border or from the microwave seal. Over the past, comparatively short part of the longitudinal displacement path is also here the door body is additionally directed in the direction of the KT wedge drives transversely to the door plane against the border UR of the wall opening and the microwave seal MD moved to its closed position.
- a pendulum handlebar arrangement PL by means of which the chamber door regardless of their longitudinal movement on the chamber housing in the direction is movably suspended transversely to the door plane. This gives one particularly simple and reliable storage of the door and enables reliable pressing of the microwave seals.
- the fresh air is supplied in the chamber interior over in the side walls of the chamber arranged grating inserts GES, each of which is a magnetron assigned.
- GES grating inserts
- an is on for steam extraction the central ceiling duct SGK connected to the chamber ceiling Not shown, known per se suction fan provided. This suction creates a negative pressure in the chamber the corresponding air inflows via the grille inserts result as a hot air extraction for those on the outside arranged magnetrons act on the chamber wall in question.
- microwave generator units with Magnetron MGT, blower KBL and deflection or collection means for the cooling air flow here in the form of a guide plate LB, are in one to the relevant Sub-housing TGH adjoining the chamber wall is the flow of cooling air against external interference flows shields.
Description
- Fig.1
- ein Diagramm des Verlaufes der mittleren relativen Feuchte f des Behandlungsmaterials über der Zeit t für ein Ausführungsbeispiel eines erfindungsgemässen Mikrowellen-Trocknungsverfahrens,
- Fig.2
- ein entsprechendes Feuchte-Zeitdiagramm für ein als Vergleichsobjekt geeignetes Mikrowellen-Trocknungsverfahren üblicher Art,
- Fig.3
- ein Ausführungsbeispiel einer erfindungsgemässen Mikrowelleneinrichtung in Form einer "Multimode"-Mikrowellenkammer für Durchlaufbetrieb in einem Vertikal-Mittelschnitt parallel zur Durchlaufrichtung,
- Fig.4
- einen Ausschnitt aus Fig.3 in grösserem Massstab,
- Fig.5
- einen Teilschnitt der Mikrowelleneinrichtung gemäss Schnittebene V-V in Fig. 4,
- Fig.6
- ein anderes Ausführungsbeispiel einer erfindungsgemässen Mikrowelleneinrichtung in Form einer "Multimode"-Kammer für Durchlaufbetrieb, wiederum in einem Vertikal-Mittelschnitt parallel zur Durchlaufrichtung entsprechend der Darstellung in Fig.1,
- Fig.7
- einen Teilschnitt aus Fig.6 gemäss der dortigen Schnittebene VII-VII,
- Fig.8
- einen Teilschnitt aus Fig.7 gemäss der dortigen Schnittebene VIII-VIII,
- Fig.9
- einen Teilschnitt gemäss der in Fig.6 strichpunktiert angedeuteten Schnittebene IX,
- Fig.10
- einen schematisch vereinfachten Teilschnitt aus Fig.9 gemäss der dortigen Schnittebene X-X, in wesentlich grösserem Massstab.
Claims (22)
- Durchlaufverfahren zur Mikrowellenbeaufschlagung, insbesondere zum Trocknen, von für Mikrowellen wenigstens teilweise absorptionsfähigen Materalien im Taktbetrieb, insbesondere zur Mikrowellenbeaufschlagung von gestapelten Stückgütern, wobei in einem Arbeitstakt (T) jeweils mindestens zwei gesonderte Behandlungsmaterial-Ladungen (LD1, LD2), von denen mindestens eine beim Taktbeginn bereits eine gegenüber einer anderen Ladung bzw. mehreren derselben hinsichtlich Zeitdauer und/oder Intensität unterschiedliche Mikrowellenbeaufschlagung erfahren hat, einem gemeinsamen Mikrowellenfeld ausgesetzt werden, gekennzeichnet durch folgende Merkmale:a) bei der Mikrowellenbeaufschlagung werden die Ladungen (LD1, LD2) während des jeweiligen Arbeitstaktes (T) in Ruhestellung auf je einem definierten Aufnahmeplatz (PL1, PL2) gehalten;b) jeweils nach Ablauf eines Arbeitstaktes (T) werden die Aufnahmeplätze (PL1, PL2) durch eine benachbarte Ladung mit geringerer vorangegangener Mikrowellenbeaufschlagung belegt.
- Durchlaufverfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Ladungswechsel an den Aufnahmeplätzen (PL1, PL2) durch Vorschub in Pausen der Mikrowellenmbeaufschlagung zwischen aufeinanderfolgenden Arbeitstakten (T) erfolgt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in einem Arbeitstakt (T) jeweils eine Mehrzahl von Behandlungsmaterial-Ladungen (LD1, LD2) der Mikrowellenbeaufschlagung im Ruhezustand unterzogen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass in einem Arbeitstakt (T) jeweils mindestens zwei gesonderte, Ladungen von Formen oder Formkernen (FKR) für die Metallgiesserei einem gemeinsamen Mikrowellenfeld ausgesetzt werden.
- Einrichtung zur Durchführung des Verfahrens nach einem der vorangehenden Ansprüche, mit mindestens einer Mikrowellenkammer und mindestens einer an diese Kammer angeschlossenen Mikrowellen-Einkoppeleinrichtung sowie mitie mindestens einer Kammertüre zur Materialbeschickung bzw. Materialentnahme, wobei die Mikrowellenkammer (MK) mindestens zwei, vorzugsweise einander gegenüberliegende (LT) Kammentüren und eine sich zwischen diesen Türen erstreckende Durchlaufbahn mit einer Transporteinrichtung (TE) aufweist, die Aufnahmeplätze (PL1, PL2) für mindestens zwei Behandlungsmaterial-Ladungen (LD1, LD2) umfasst, dadurch gekennzeichnet, dass bei der Transporteinrichtung (TE) eine Antriebssteuerung mit den vorgegebenen Behandlungs-Ruhestellungen der Ladungen (LD1, LD2) zugeordneten Stellungsdetektoren (SD) vorgesehen ist.
- Einrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Aufnahmeplätze (PL1, PL2) für die Behandlungsmaterial-Ladungen (LD1, LD2) innerhalb der Mikrowellenkammer (MK) in Transportrichtung (P) hintereinander angeordnet sind.
- Einrichtung nach Anspruch 5 oder 6, gekennzeichnet durch folgende Merkmale:a) die Mikrowellenkammer (MK) ist mit einer Transporteinrichtung (TE) versehen, die sich längs einer Durchlaufbahn für das Behandlungsgut (FKR) erstreckt;b) die Transporteinrichtung umfasst eine Mehrfach-Vorschubwalzenanordnung (VW), die sich längs der Behandlungsgut-Durchlaufbahn erstreckt und mit Antriebsmitteln gekuppelt ist;c) die Antriebswellen (AW) bzw. Tragachsen (TA) der Vorschubwalzen (VW) sind in Bereichen der Kammerwände, die mit in Bezug auf die mittlere Mirkowellen-Feldintensität schwächeren Feldbereichen gekoppelt sind und entsprechend geringere Wandströme führen, durch Wandausnehmungen in den feldfreien Aussenraum geführt und hier mit Antriebsmitteln gekuppelt.
- Einrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Durchführungsausnehmungen der Antriebswellen bzw. Tragachsen in Wandbereichen angeordnet sind, die sich längs einspringenden Innenkanten der Kammer (MK) erstrecken.
- Einrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die wandseitigen Endabschnitte der Vorschubwalzen und/oder die zu diesen Endabschnitten benachbarten, noch im Kammerinnenraum liegenden Abschnitte der Antriebswellen bzw. Tragachsen mit in Richtung zur jeweils benachbarten Kammerwandung im Durchmesser zunehmenden Feldbeeinflussungselementen (WE) aus elektrisch leitfähigem Werkstoff versehen sind.
- Einrichtung nach einem der Ansprüche 7 bis 9, gekennzeichnet durch folgende Merkmale:die Antriebsmittel der Mehrfach-Vorschubwalzenanordnung (VW) sind innerhalb des Kammerinnenraumes in mindestens einem Antriebs- bzw. Lagergehäuse (AH bzw. LH) untergebracht, das mit wenigstens annähernd mikrowellendichten Wellen- bzw. Achsdurchführungen für die Vorschubwalzen (VW) versehen ist.
- Einrichtung nach Anspruch 10, dadurch gekennzeichnet, dass das Antriebs- bzw. Lagergehäuse (AH bzw. LH) als langgestreckter, längs der Durchlaufbahn angeordneter Kasten ausgebildet ist.
- Einrichtung nach Anspruch 11, dadurch gekennzeichnet, dass auf einer Längsseite der Vorschubwalzenanordnung (VW) ein sich parallel zur Durchlaufbahn erstreckendes Antriebsgehäuse (AH) und auf der anderen Längsseite der Vorschubwalzenanordnung (VW) ein ebensolches Lagergehäuse (LH) vorgesehen ist.
- Einrichtung nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die äusseren Seitenbegrenzungen der kastenförmigen Antriebs- bzw. Lagergehäuse (AH bzw. LH) quer zur Durchlaufbahn gemessen wenigstens auf einem Teil der Kastenhöhe mit Abstand von den benachbarten Kammerwänden bzw. von den Seitenkanten der Türöffnung angeordnet sind.
- Einrichtung nach einem der Ansprüche 5 bis 13, dadurch gekennzeichnet, dass eine Mehrzahl von Transport-Trägern (TT) vorgesehen ist, die den Aufnahmeplätzen (PL1, PL2) für Behandlungsmaterial-Ladungen (LD1, LD2) in der Mikrowellenkammer (MK) formangepasst sind und Halterungsmittel für Ladungsbehälter (BH1, BH2) aufweisen.
- Einrichtung nach einem der Ansprüche 5 bis 14, gekennzeichnet, durch folgende Merkmale:a) die Schliessfläche der Kammertüre (LT) und die Umrandung (UR) der ihr zugeordnete Wandöffnung erstrecken sich in der Offenstellung der Kammertüre (LT) in zueinander wenigstens annähernd parallelen und gegenseitig beabstandeten Ebenen, und die Kammertür (LT) ist wenigstens annähernd parallel zur Ebene ihrer Schliessfläche zwischen einer Freigabestellung und einer Abdeckstellung bezüglich der Kammeröffnung längsverschiebbar sowie zusätzlich querverschiebbar am Kammergehäuse gelagert;b) zwischen Kammertüre und Kammergehäuse ist mindestens ein durch die Längsbewegung der Kammertüre (LT) aktivierbares Keilgetriebe (KT) angeordnet, das die Kammertüre (LT) quer zur Ebene der Kammeröffnung in ihre Schliesstellung verschiebt.
- Einrichtung nach Anspruch 15, dadurch gekennzeichnet, dass eine Mehrzahl von Keilgetrieben (KT) in einer Mehrpunkt-Stützanordnung, vorzugsweise in einer Drei- oder Vierpunktanordnung, über die Randbereiche der Kammertüre (LT) verteilt angeordnet ist.
- Einrichtung nach Anspruch 16, dadurch gekennzeichnet, dass mindestens ein Keilgetriebe (KT), selbsthemmend ausgebildet ist.
- Einrichtung nach einem der Ansprüche 15 bis 17, gekennzeichnet durch folgende Merkmale:die Kammertüre ist in ihrer Längsbewegung eine in Schliess - und Oeffnungsrictung bewegliche Pendel-Lenkeranordnung (PL) am Kammergehäuse aufgehänt.
- Einrichtung nach einem der Ansprüche 5 bis 18, dadurch gekennzeichnet, dass die Kammertür zwischen einer Freigabestellung und einer Schliess- bzw. Abdeckstellung bezüglich der Kammeröffnung bewegbar gelagert und mit einer selbsthemmenden, jedoch in eine Freilaufstellung ausrückbaren Antriebsvorrichtung (RZ, ZS) verbunden ist.
- Einrichtung nach einem der Ansprüche 5 bis 19, dadurch gekennzeichnet, dass für die Türen Oeffnungs- und/oder Schliess-Antriebsmittel (TAM) vorgesehen sind, die mit einer Taktsteuereinrichtung in Wirkverbindung stehen.
- Einrichtung nach einem der Ansprüche 5 bis 20, gekennzeichnet durch folgende Merkamle:a) die Mikrowellenspeisung umfasst mindestens eine im Bereich wenigstens einer Kammerwand-Aussenseite angeordnete und mit Luftstrom-Kühlmitteln (LMK) versehene Mikrowellen-Generatoreinrichtung (MGT), insbesondere eine Magnetroneinheit, vorzugsweise eine Vielzahl solcher Generatoreinrichtungen, deren Auskoppelelemente (ADM) mit dem Kammerinnenraum in Wirkverbindung stehen;b) die Mikrowellenkammer ist mit einer Absaugeinrichtung (SGK) verbunden, die im Kammerinnenraum im Betrieb eine Unterdruckatmosphäre gegenüber der Aussenumgebung erzeugt;c) die Kühlmittel (LMK) der Generatoreinrichtung (MGT) sind derart an den Kammerinnenraum angeschlossen, dass ein Kühlluftstrom (LST) von der Aussenumgebung über die Kühlmittel in den Kammerinnenraum entsteht;c) die Kühlmittel umfassen mindestens ein Gebläse KBL), das die Generatoreinrichtung (MGT) mit einem im wesentlichen parallel bis spitzwinklig zur Kammerwand verlaufenden Kühlluftstrom (LST) beaufschlagt;d) in Richtung des Kühlluftstromes (LST) hinter der Generatoreinrichtung (MGT) ist in der Kammerwand mindestens ein Luftdurchlass (GES) vorgesehen, in dessen Bereich an der Kammerwand-Aussenseite Umlenk- und/oder Sammelmittel (LB) angeordnet sind, die den Kühlluftstrom (LST) wenigstens teilweise in den Ansaugbereich des Luftdurchlasses (GES) führen.
- Einrichtung nach Anspruch 21, dadurch gekennzeichnet, dass die Mikrowellen-Generatoreinrichtung (MGT) mit Kühlvorrichtungen und Kühlluft-Antriebsmitteln bzw. -Leitmitteln (LMK, KBL, LB) in einem Gehäuseraum angeordnet ist, der den Kühlluftstrom gegen äussere Störströmungen abschirmt.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4200101 | 1992-01-03 | ||
DE19924200101 DE4200101A1 (de) | 1992-01-03 | 1992-01-03 | Verfahren zur mikrowellenbeaufschlagung, insbesondere zum trocknen, von materialien und einrichtung zur durchfuehrung des verfahrens |
DE4232069 | 1992-09-24 | ||
DE19924232069 DE4232069A1 (de) | 1992-09-24 | 1992-09-24 | Einrichtung zur Mikrowellenbeaufschlagung, insbesondere zum Trocknen, von Materialien |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0554559A1 EP0554559A1 (de) | 1993-08-11 |
EP0554559B1 true EP0554559B1 (de) | 1999-09-22 |
Family
ID=25910815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92121868A Expired - Lifetime EP0554559B1 (de) | 1992-01-03 | 1992-12-23 | Verfahren und Einrichtung zur Mikrowellenbeaufschlagung, insbesondere zum Trocknen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0554559B1 (de) |
AT (1) | ATE184819T1 (de) |
DE (1) | DE59209750D1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0697928A1 (de) * | 1993-11-13 | 1996-02-28 | Reinhard Schulze | Transport- bzw. belade- und/oder entladesystem, insbesondere mit mikrowellenkammer |
CN105537532A (zh) * | 2016-02-01 | 2016-05-04 | 上海良基博方汽车发动机零部件制造股份有限公司 | 一种新型的模壳干燥系统 |
CN107091562B (zh) * | 2017-03-27 | 2023-04-07 | 贵州大学 | 一种用于机械工件的烘干设备 |
CN109470590B (zh) * | 2017-09-07 | 2024-03-12 | 中冶长天国际工程有限责任公司 | 一种物料在线水分检测装置及其检测方法 |
CN108775778B (zh) * | 2018-04-27 | 2023-11-07 | 中国科学院青岛生物能源与过程研究所 | 一种干燥装置及干燥方法 |
DE102020102784A1 (de) * | 2019-11-17 | 2021-05-20 | Fricke Und Mallah Microwave Technology Gmbh | Mikrowellen-sandformkasten |
DE102020211223A1 (de) | 2020-09-08 | 2022-03-10 | Volkswagen Aktiengesellschaft | Trocknungssystem für 3D-Druckbauteile, Fertigungssystem für die Herstellung von 3D-Druckbauteile |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180918A (en) * | 1978-10-06 | 1980-01-01 | Caterpillar Tractor Co. | Microwave drying of ceramic shell molds |
DE2914243C3 (de) * | 1979-04-09 | 1986-03-27 | Keller Ofenbau GmbH, 4530 Ibbenbüren | Anlage zum rhythmischen Trocknen von keramischen Formlingen |
DE2940404A1 (de) * | 1979-10-05 | 1981-04-16 | Heinrich Wagner Maschinenfabrik GmbH & Co, 5928 Laasphe | Verfahren und vorrichtung zur trocknung von giessereiformen und -kernen |
DE3119979A1 (de) * | 1981-05-20 | 1982-12-16 | Wolfgang 6300 Gießen Uhrig | Verfahren und vorrichtung zum trocknen von formlingen aus ton |
DE3625322C1 (en) * | 1986-07-26 | 1987-06-19 | Keller Gmbh & Co Kg | Installation for drying green ceramic products |
-
1992
- 1992-12-23 DE DE59209750T patent/DE59209750D1/de not_active Expired - Lifetime
- 1992-12-23 EP EP92121868A patent/EP0554559B1/de not_active Expired - Lifetime
- 1992-12-23 AT AT92121868T patent/ATE184819T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0554559A1 (de) | 1993-08-11 |
ATE184819T1 (de) | 1999-10-15 |
DE59209750D1 (de) | 1999-10-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2239042C2 (de) | Lötofen zum kontinuierlichen Verlöten von Aluminiumteilen | |
DE2101104A1 (de) | Verfahren und Vorrichtung zum Trocknen keramischer Massen | |
DE2232065C3 (de) | Mikrowellen-Erhitzungseinrichtung | |
EP0562250A1 (de) | Verfahren und Vorrichtung zum Abschrecken metallischer Werkstücke | |
DE2812271A1 (de) | Vorrichtung zum chargenweisen beschichten von substraten mit mehreren schleusenkammern | |
EP0648549A1 (de) | Reaktionskammer zur Dekontamination von Bekleidungs- und Ausrüstungsgegenständen | |
EP0554559B1 (de) | Verfahren und Einrichtung zur Mikrowellenbeaufschlagung, insbesondere zum Trocknen | |
EP1485312B1 (de) | Anlage zum behandeln, insbesondere zum kataphoretischen tauchlackieren von fahrzeugkarosserien | |
EP3708937A1 (de) | Anlage zum trocknen von fahrzeugkarosserien | |
DE2220122A1 (de) | Heizgerät mit herausnehmbaren Heizelementen und Hitzeschilden | |
DE3613535C2 (de) | Vorrichtung zum Erwärmen oder Abkühlen eines Fluids | |
DE4200101A1 (de) | Verfahren zur mikrowellenbeaufschlagung, insbesondere zum trocknen, von materialien und einrichtung zur durchfuehrung des verfahrens | |
EP0087635A1 (de) | Verfahren zum Reinigen von Einzelteilen und Vorrichtung zur Durchführung des Verfahrens | |
EP0632965B1 (de) | Verfahren zum mehrstufigen Behandeln von stückigen Produkten mittels Prozessmedien und Vorrichtung zur Durchführung des Verfahrens | |
DE4232069A1 (de) | Einrichtung zur Mikrowellenbeaufschlagung, insbesondere zum Trocknen, von Materialien | |
EP1736269B1 (de) | Wellenlötmaschine mit quer zu einer Werkstückförderbahn bewegbaren auswechselbarem Lotbad : Verfahren zum Wellenlöten von Bauteilen mit Wechsel der Lotreservoir | |
EP0868641B1 (de) | Einrichtung zur mikrowellenbeaufschlagung von materialien und stückgütern | |
WO2002000377A1 (de) | Verfahren zum sintern von aluminium-basierten sinterteilen sowie vorrichtung zum sintern von aluminium-basierten sinterteilen | |
EP0245317A1 (de) | Hochfrequenz-schweissanlage. | |
DE3418101A1 (de) | Verfahren zur behandlung von wasserhaltigen substanzen und einrichtung zur durchfuehrung des verfahrens | |
EP0826221B1 (de) | Elektronenstrahlanlage | |
EP0406534B1 (de) | Vorrichtung zum Behandeln von plattenförmigen Gegenständen | |
DE3709672A1 (de) | Verfahren und anlage zum reinigen und entfetten von behandlungsgut | |
DE19858582A1 (de) | Anlage zum thermischen Behandeln von metallischen Werkstücken | |
DE2016528A1 (de) | Führungsschiene für Hängebahnen |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
17P | Request for examination filed |
Effective date: 19940124 |
|
17Q | First examination report despatched |
Effective date: 19960503 |
|
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): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
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 PRE;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.SCRIBED TIME-LIMIT Effective date: 19990922 Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990922 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19990922 Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19990922 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: 19990922 |
|
REF | Corresponds to: |
Ref document number: 184819 Country of ref document: AT Date of ref document: 19991015 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 59209750 Country of ref document: DE Date of ref document: 19991028 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19991222 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: 19991222 |
|
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: 19991223 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991223 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19991224 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991231 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991231 |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000106 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
BERE | Be: lapsed |
Owner name: SCHULZE REINHARD Effective date: 19991231 |
|
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: 20000630 |
|
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: IE Ref legal event code: FD4D |
|
26N | No opposition filed | ||
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: 20001223 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010628 Year of fee payment: 9 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20001223 |
|
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: 20020830 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20120523 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59209750 Country of ref document: DE |