DE3421778A1 - Microwave heating method - Google Patents

Microwave heating method

Info

Publication number
DE3421778A1
DE3421778A1 DE19843421778 DE3421778A DE3421778A1 DE 3421778 A1 DE3421778 A1 DE 3421778A1 DE 19843421778 DE19843421778 DE 19843421778 DE 3421778 A DE3421778 A DE 3421778A DE 3421778 A1 DE3421778 A1 DE 3421778A1
Authority
DE
Germany
Prior art keywords
pressure
arrangement according
container
beginning
containers
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.)
Withdrawn
Application number
DE19843421778
Other languages
German (de)
Inventor
Karl Dr. 7800 Freiburg Fritz
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.)
Snowdrift Corp Nv Curacao Niederlaendische An
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19843421778 priority Critical patent/DE3421778A1/en
Priority to AT84108961T priority patent/ATE43773T1/en
Priority to EP84108961A priority patent/EP0136453B2/en
Priority to DE8484108961T priority patent/DE3478560D1/en
Publication of DE3421778A1 publication Critical patent/DE3421778A1/en
Priority to US06/888,959 priority patent/US4775770A/en
Priority to US07/238,252 priority patent/US4866233A/en
Priority to US07/449,403 priority patent/US4952763A/en
Withdrawn legal-status Critical Current

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
    • H05B6/78—Arrangements for continuous movement of material
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
    • A23L3/01—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment using microwaves or dielectric heating

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

As a development of previous applications, a microwave method for heating under pressure is specified, according to which the operating space is a long metal tube into which window openings are incorporated at regular intervals for transmitters, which are located side-by-side, to radiate in. The windows are covered in a pressure-tight manner by means of a pushed-in plastic tube in which the object flows through directly or in packaging or in a special container, with pressure gates at the start and end, and a cooling zone at the end. The container is sealed in a pressure-tight manner with respect to the plastic tube particularly by means of sealing rings at its ends, so that the pressure gates are in this case superfluous. The container, which is constructed like a hollow piston in a cylinder and likewise consists of plastic or a suitable insulating material, is open on one side for loading and unloading and is connected to its neighbours to form an endless flexible chain.

Description

Dr. Karl FritzDr. Karl Fritz

Y800 Freiburg i. Br. Y800 Freiburg i. Br.

Mikrowellen-Erwärmungsverfahren Zusatz zu P 33 41 585.ΑMicrowave heating process Addition to P 33 41 585.Α

In der Hauptanmeldung wurde eine Anordnung angegeben zur Erzielung von Erwärmung durch Mikrowellen unter Druck, wobei die Energie durch druckdichte Fenster in einen metallisch verschließbaren Arbeitsraum eingestrahlt wird und die Dichtung gegen das Wasserdampf-Luftgemisch sowie; gegen Strahlungsaustritt an der Öffnungslinie in einer Ebene ver- ■ laufen.In the main application an arrangement was specified for achieving heating by microwaves under pressure, whereby the energy is radiated through pressure-tight windows into a metal, lockable work space and the seal against the water vapor-air mixture and; against radiation exit at the opening line in one plane to run.

Die vorliegende Anmeldung führt in die bisher praktisch ebenflächig aufgebaute Apparatur die ZirkularsymmettHe ein unter Beibehaltung der wesentlichen physikalischen Gesichtspunkte. D. h., die Wand des Arbeitsraumes wird zu einem Metallzylinder, in den symmetrisch in laufender Folge die Fenster für die einzelnen Sender eingeschnitten sine. Die Dichtungsplatte wird ein Plastikzylinder, dicht in c'en Metallzylinder eingepaßt, durch den die Objekte lose, in ihren Originalverpackungen oder in Sonderbehältern durch cie Felder der Sender hindurch geschoben werden. Am Anfang und Ende der Rohre befindet sich je eine Druckschleuse. In einer anderen Ausführungsform laufen die Objekte in einem vorzugsweise zylindrischen Behälter, der sich wie ein hohler Kolben mit Dichtungsringen in dem Plastikrohr bewegt, an einer Seite zum Füllen und Entnehmen offen ist, mit seinen beiden Nachbarn mechanisch flexibel gekoppelt ist und am Ende vor Austritt an die freie Luft durch eine KUhlzone läuft zur Herabsetzung Von Temperatur und Druck.The present application introduces the circular symmetry into the apparatus, which has hitherto been practically constructed with a flat surface while maintaining the essential physical aspects. That means, the wall of the working space becomes a metal cylinder, in which the Sine cut windows for the individual channels. The sealing plate becomes a plastic cylinder, sealed in a metal cylinder fitted, through which the objects loose, in their original packaging or in special containers through cie fields the transmitter can be pushed through. There is a pressure lock at the beginning and end of the pipes. In another Embodiment run the objects in a preferably cylindrical container, which is like a hollow piston moved with sealing rings in the plastic tube, is open on one side for filling and removal, with its two neighbors is mechanically flexibly coupled and at the end runs through a cooling zone before it escapes into the open air to reduce it Of temperature and pressure.

Dadurch läßt sicn die Apparatur durch Wiederholung der Bauelemente zu Durchlaufofen beliebiger Kapazität ausbauen.This allows the apparatus to be repeated by repeating the components expand to a continuous furnace of any capacity.

In Abb. 1 trägt ein Metallrohr 19 Fensterausschnitte 20 regelmäßig verteilt, in die aus früher (z. B. P 33 33 >95.4) geschilderten Senderanordnungfeu Mikrowellenenergie ein gestrahlt wird. Dicht geschlossen in ciiesem Metallrohr s eckt ein Plastikrohr 21 hoher elektrischer Güte und mechanischer Festigkeit, das die b'ensteröffnunger druckdicht abdeckt, wenn in diesem Plastikrohr ein Betriebsdruck von 2-3 atü entsteht.In Fig. 1, a metal tube 19 carries window cutouts 20 regularly distributed, in those from earlier (e.g. P 33 33> 95.4) Transmitter arrangement described for microwave energy is radiated will. A plastic tube 21 of high electrical quality and mechanical quality sits tightly closed in this metal tube Strength that covers the window opening pressure-tight, if there is an operating pressure of 2-3 atü in this plastic tube arises.

In diesem Plastikrohr laufen Behälter aus dem gleichen oder ähnlichen Material. Ihre Form zeigt z. B. Abb. 2. Ein zylindrischer Behälter, an einer Längsseite offen zum Einfüllen und Entnehmen des Objektes.Containers made of the same or similar material run in this plastic tube. Their shape shows z. B. Fig. 2. A cylindrical Container, open on one long side for filling and removing the object.

An beiden Enden sind Führungsringe 22 aus Metall oder plastischem Material, die gegebenenfalls auch eine Dichtung längs des Plastikrohres gegen den Betriebsdruck des entstehenden Wasser-Dampf-Luft-Gemiisches darstellt*.At both ends there are guide rings 22 made of metal or plastic material, which may also have a seal along the plastic tube against the operating pressure of the resulting water-steam-air mixture *.

Bei Metallringen muß die Polarisation des MW-Feldes senkrecht gegenüber den Ringebenen ausgerichtet sein.In the case of metal rings, the polarization of the MW field must be aligned perpendicular to the ring planes.

Für den Betrieb gibt es zwei Ausführungsformen: Am Füllende und am Entnahmeende gibt es je eine Druckschleuse 23 mit z. B. Drehschieber. Das Objekt verträgt beim Einfahren den sofort einsetzenden überdruck von außen, aber nicht den stehenbleibenden überdruck von innen am Ende der Prozedur. Daher ist der Schleuse am Ende noch ein Kühlvorgang angeordnet, der das Objekt auf passende Temperatur und damit Druck herunterkühlt. In diesem Fall haben die Ringe nur Führungsfunktion.There are two types of operation: there is a pressure lock at the filling end and at the removal end 23 with z. B. rotary valve. The object can withstand the immediate overpressure from the outside when it is driven in, but not the permanent overpressure from the inside at the end of the procedure. Therefore, the lock is still a cooling process at the end arranged, which cools the object down to a suitable temperature and thus pressure. In this case they have Rings only guide function.

•I'• I '

Die zweite Ausführungsform ist besonders für kontinuier-The second embodiment is particularly suitable for continuous

• · ·ι « · ι tin• · · ι «· ι tin

lichen Betrieb eingerichtet. Der vom Objekt und seiner feuchten Umgebung unter dem Einfluß der Energieeinstrahlung ausgehende Druck wird im wesentlichen auf die Behälter beschränkt, die Druckschleusen fallen weg, der Kühlraum vor dem Ausgang bleibt und ist so lang ausgebaut, daß die KUhlzeit erreicht wird. Die Behälter kommen dann an die offene Atmosphäre und werden ent- und beladen und schließen sich in bogenförmigem offenen Rücklauf gtführt wieder in die Apparatur ein. Zu diesem Zwecke sind die Behälter mechanisch flexibel (24) miteinander in endloser Keite gekoppelt. Der Druck in Kettenmitte gleicht sich im MitV.el in Längsspannungen aus. Der mechanische Antrieb erfolgt z. B. über symmetrisch auf 25 greifende Zahnräder mit überbrückung der Führungsringe. established operation. That of the object and its damp environment under the influence of energy radiation The outgoing pressure is essentially limited to the container, the pressure locks are eliminated and the cooling room remains in front of the exit and is developed so long that the cooling time is reached. The containers then come to the open atmosphere and are unloaded and loaded and close in an arc-shaped open return flow leads back into the Apparatus on. For this purpose, the containers are mechanically flexible (24) coupled to one another in an endless Keite. Of the Pressure in the middle of the chain is balanced out in the MitV.el in longitudinal tensions. The mechanical drive takes place z. B. about symmetrical on 25 meshing gears with bridging of the guide rings.

Je nach vorliegender Aufgabe lassen sich Kombinationen der vorgeführten Beispiele sinnvoll zusammenstellen.Depending on the task at hand, combinations of the examples presented can be put together in a meaningful way.

- Ansprüche -- Expectations -

Claims (5)

Dr. Karl Fritz Freiburg i. ür. AnsprücheDr. Karl Fritz Freiburg i. ur. Expectations 1. Anordnung zur Erwärmung durch Mikrowellen unter Druck nach der Hauptanraeldung, dadurch gekenn-1. Arrangement for heating by microwaves under pressure after the main registration, thereby marked • zeichnet , daß der Arbeitsraum aus einem Metallrohr besteht mit Fenstereinschnitten für die MW-Strahlung, innerhalb dessen sich ein Plastikrohr unmittelbar anschließt, das die Öffnungen bei Druck von innen dicht abdeckt.• draws that the workspace is made of a metal pipe consists of window cuts for the MW radiation, inside which a plastic pipe is located directly that tightly covers the openings when pressure is applied from the inside. 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Objekte durch diesen Raum geschoben oder gezogen werden, unter Passieren einer Druckschleuse am Anfang und am Ende und einer Kühlkammer vor oder in der letzten Schleuse.2. Arrangement according to claim 1, characterized in that the objects pushed or pulled through this space by passing a pressure lock at the beginning and at the end and a cooling chamber in front of or in the last Lock. 3. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Objekte in Behältern liegen, die flexibel miteinander gekoppelt sind und durch Führungsringe wie Kolben in einem Zylinder in Längsrichtung bewegt werden § können und an einer Längsseite offen sind zum Be- und " Entladen.3. Arrangement according to claim 1 or 2, characterized in that the objects are in containers that are flexible with one another are coupled and moved in the longitudinal direction by guide rings such as pistons in a cylinder § can and are open on one long side for loading and unloading. 4. Anordnung nach.einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die FUhrungsringe an den Enden der Behälter gleichzeitig diese gegen die Innenwand des Plastikrohres abdichten, wodurch sich die Druckschleusen an Anfang und Ende, aber nicht die KUhlzone erübrigen.4. Arrangement according to one of claims 1 to 3, characterized in that that the guide rings at the ends of the container at the same time these against the inner wall of the Seal the plastic pipe, so that the pressure locks at the beginning and end, but not the cooling zone, are superfluous. 5. Anordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Behälter nach erfolgter Kühlung an offener Luft zum Ent- und Beladen weiter geführt5. Arrangement according to one of claims 1 to 4, characterized in that that, after cooling in the open air, the containers continue to be used for loading and unloading /2/ 2 werden und wieder zurück zum Anfang des Durchlaufs.and back to the beginning of the cycle. Anordnung nach einem der Ansprüche 1 bis 5, dadurch ge· kennzeichnet, daß die eine Kette bildenden Behälter mechanisch angetrieben werden durch symmetrisch liegende Zahnräder, die auf ihrem Außenmantel greifen unter überbrückung der Führungsringe.Arrangement according to one of Claims 1 to 5, characterized in that the containers forming a chain are mechanically driven by symmetrically located toothed wheels which grip on their outer surface by bridging the guide rings.
DE19843421778 1983-03-24 1984-06-12 Microwave heating method Withdrawn DE3421778A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19843421778 DE3421778A1 (en) 1984-06-12 1984-06-12 Microwave heating method
AT84108961T ATE43773T1 (en) 1983-08-10 1984-07-28 METHOD AND DEVICE FOR HEATING OBJECTS BY MICROWAVES.
EP84108961A EP0136453B2 (en) 1983-08-10 1984-07-28 Method and device for the microwave heating of objects
DE8484108961T DE3478560D1 (en) 1983-08-10 1984-07-28 Method and device for the microwave heating of objects
US06/888,959 US4775770A (en) 1983-08-10 1986-07-24 System for heating objects with microwaves
US07/238,252 US4866233A (en) 1983-08-10 1988-08-30 System for heating objects with microwaves
US07/449,403 US4952763A (en) 1983-03-24 1989-12-19 System for heating objects with microwaves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843421778 DE3421778A1 (en) 1984-06-12 1984-06-12 Microwave heating method

Publications (1)

Publication Number Publication Date
DE3421778A1 true DE3421778A1 (en) 1986-01-02

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DE19843421778 Withdrawn DE3421778A1 (en) 1983-03-24 1984-06-12 Microwave heating method

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Country Link
DE (1) DE3421778A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024714A1 (en) * 1989-08-05 1991-02-07 Scras DEVICE FOR REPEATING AUTOMATICALLY EXECUTING A HEAT TREATMENT CYCLE ON SAMPLES
DE4108766A1 (en) * 1991-03-18 1992-09-24 Guenter Knapp High pressure microwave heating appts. - for long term high temp. acid dissolution of substances
EP3169141A1 (en) * 2015-11-13 2017-05-17 Bottle-Top Development Co. Microwave heating system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505490A (en) * 1966-10-07 1970-04-07 Raytheon Co Apparatus for thawing of frozen materials
DE2407927A1 (en) * 1973-04-11 1974-10-24 Kreis Ag MICROWAVE TUNNEL OVEN
DE2546886A1 (en) * 1975-10-20 1977-04-21 Karl Dr Fritz Microwave oven without door - has tunnel leading to heating chamber formed of reflecting circuits and loop conveyor belt
DE3139790A1 (en) * 1981-10-07 1983-09-08 GCT GRAU-COMMUNICATIONS TECHNOLOGY GmbH & Co, 7053 Kernen Despatch carrier for tube mail installations

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505490A (en) * 1966-10-07 1970-04-07 Raytheon Co Apparatus for thawing of frozen materials
DE2407927A1 (en) * 1973-04-11 1974-10-24 Kreis Ag MICROWAVE TUNNEL OVEN
DE2546886A1 (en) * 1975-10-20 1977-04-21 Karl Dr Fritz Microwave oven without door - has tunnel leading to heating chamber formed of reflecting circuits and loop conveyor belt
DE3139790A1 (en) * 1981-10-07 1983-09-08 GCT GRAU-COMMUNICATIONS TECHNOLOGY GmbH & Co, 7053 Kernen Despatch carrier for tube mail installations

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024714A1 (en) * 1989-08-05 1991-02-07 Scras DEVICE FOR REPEATING AUTOMATICALLY EXECUTING A HEAT TREATMENT CYCLE ON SAMPLES
DE4024714C2 (en) * 1989-08-05 1999-04-29 Sod Conseils Rech Applic Apparatus for repeated, automatic execution of a heat treatment cycle for the treatment of a sample
DE4108766A1 (en) * 1991-03-18 1992-09-24 Guenter Knapp High pressure microwave heating appts. - for long term high temp. acid dissolution of substances
US5345066A (en) * 1991-03-18 1994-09-06 Knapp Guenter Device for heating substances under the development of high pressures in a microwave field
EP3169141A1 (en) * 2015-11-13 2017-05-17 Bottle-Top Development Co. Microwave heating system

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