EP0069105B1 - Four industriel modulaire à micro-ondes - Google Patents

Four industriel modulaire à micro-ondes Download PDF

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Publication number
EP0069105B1
EP0069105B1 EP82870033A EP82870033A EP0069105B1 EP 0069105 B1 EP0069105 B1 EP 0069105B1 EP 82870033 A EP82870033 A EP 82870033A EP 82870033 A EP82870033 A EP 82870033A EP 0069105 B1 EP0069105 B1 EP 0069105B1
Authority
EP
European Patent Office
Prior art keywords
microwave
middle compartment
openings
partitions
compartments
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
Application number
EP82870033A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0069105A1 (fr
Inventor
Pieter Luypaert
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.)
De Belgische Staat L'etat Belge Represente Par Le Secretaire General Des Services De Programmation
Original Assignee
De Belgische Staat L'etat Belge Represente Par Le Secretaire General Des Services De Programmation
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 De Belgische Staat L'etat Belge Represente Par Le Secretaire General Des Services De Programmation filed Critical De Belgische Staat L'etat Belge Represente Par Le Secretaire General Des Services De Programmation
Priority to AT82870033T priority Critical patent/ATE19334T1/de
Publication of EP0069105A1 publication Critical patent/EP0069105A1/fr
Application granted granted Critical
Publication of EP0069105B1 publication Critical patent/EP0069105B1/fr
Expired legal-status Critical Current

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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
    • 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 present invention relates to a modular industrial microwave oven for drying or heat treatment of products by microwave.
  • the invention relates to a continuously operating device which, by its modular structure, is suitable for most industrial energy uses ranging from 10 to several hundred kilowatts.
  • a microwave oven which is characterized by at least one module consisting of a metal box divided into three compartments by partitions having openings, by several microwave generators, for example 25 at 50 low power magnetrons, these generators being arranged in the external compartments such that the hot air is propagated directly in the median compartment by said openings in the partitions, the median compartment constituting the applicator oven proper.
  • Several waveguides are mounted on the metal box with radiators so that the maximum amount of microwave energy is applied in the middle compartment.
  • FIG. 1 schematically illustrates a common microwave installation
  • fig. 2 is a perspective view of an embodiment of a microwave module according to the invention
  • fig. 3 is a schematic sectional view of the embodiment of FIG. 2.
  • fig. 1 shows the construction of a usual industrial microwave installation.
  • the reference 1 designates a microwave generator which is connected by an isolator 2 and a passive transfer part 3, for example a circulator, to a microwave applicator 4 in which the product to be treated is placed.
  • Figs. 2 and 3 show a modular unit according to the invention.
  • This unit 10 essentially comprises a metal box 1 divided into three compartments 11, 12 and 13 by partitions 14 and 15.
  • the external compartments 11 and 13 contain the power units including a group of microwave or magnetron generators 4 and the power transformers 8; the middle compartment 12 forms the actual applicator in which the product is treated.
  • the partitions 14 and 15 between the compartments have openings, 16 and 17 respectively.
  • the magnetrons 4 are arranged relative to these openings 16 and 17 in such a way that the hot air coming from the cooling of the magnetrons is propagated directly in the applicator compartment 12.
  • the openings 16 and 17 are each provided with a screen 18.
  • the microwave energy of the magnetrons is applied in the compartment 12 by means of radiators 3 which are uniformly distributed along each waveguide 2.
  • the location of the waveguides 2 as well as that of the radiators 3 are chosen so that the coupling between the different magnetrons can be done without losses. In this way, not only is the presence of insulators and circulators avoided, but also the efficiency is significantly increased.
  • the position and distribution of the radiators 3 above the middle compartment 12 are determined in such a way that the interaction between the magnetrons is practically eliminated.
  • a 36 kW microwave oven project (18 x 2 1 kW magnetrons) working at the frequency of 2450 MHz and used for drying plasticized paper, has seventy-two radiators spread over ten - eight rows of four with a spacing of approximately twenty-five centimeters between rows, the radiators in each row being spaced from each other by approximately fifteen centimeters.
  • the external compartments 11 and 13 are put under a variable air pressure by separate fans 9. Thus not only the cooling heat of the magnetrons but also that of the transformers are used in the enclosure of the compartment 12.
  • the evacuation is via outputs 5.
  • a conveyor belt 6 made of a flexible and non-absorbent material, for example polyethylene, which passes through the middle compartment 12 for transporting the product to be treated.
  • a flexible and non-absorbent material for example polyethylene

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Furnace Details (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Insulating Materials (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP82870033A 1981-06-29 1982-06-18 Four industriel modulaire à micro-ondes Expired EP0069105B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82870033T ATE19334T1 (de) 1981-06-29 1982-06-18 Modularer industrieller mikrowellenofen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8103118A NL8103118A (nl) 1981-06-29 1981-06-29 Modulaire industriele mikrogolfoven voor thermische behandeling van stoffen.
NL8103118 1981-06-29

Publications (2)

Publication Number Publication Date
EP0069105A1 EP0069105A1 (fr) 1983-01-05
EP0069105B1 true EP0069105B1 (fr) 1986-04-16

Family

ID=19837709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82870033A Expired EP0069105B1 (fr) 1981-06-29 1982-06-18 Four industriel modulaire à micro-ondes

Country Status (9)

Country Link
EP (1) EP0069105B1 (el)
AT (1) ATE19334T1 (el)
CA (1) CA1190605A (el)
DE (1) DE3270591D1 (el)
ES (1) ES8305176A1 (el)
GR (1) GR75434B (el)
IE (1) IE52949B1 (el)
NL (1) NL8103118A (el)
PT (1) PT75071B (el)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT390734B (de) * 1987-04-14 1990-06-25 Katschnig Helmut Vorrichtung zum abtoeten bzw. inaktivieren von eiweiss- bzw. nukleinsaeurehaeltigen organismen
DE3926363A1 (de) * 1989-08-10 1991-02-14 Reinhard Schulze Verfahren und einrichtung zur waermebehandlung von gemischen organischer substanzen und zugehoerige anwendung
DE4001220A1 (de) * 1990-01-17 1991-07-18 Reinhard Schulze Mikrowellenkammer und zugehoerige magnetroneinheit
FR2885003B1 (fr) * 2005-04-22 2007-06-29 Premark Feg Llc Four a micro-ondes avec conduit d'air de refroidissement
ES2342958B2 (es) * 2008-09-03 2011-07-04 Emite Ingenieria Slne Analizador de multiples entradas y multiples salidas.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127495A (en) * 1961-09-05 1964-03-31 Studebaker Corp Microwave oven
CH426051A (de) * 1965-10-25 1966-12-15 Patelhold Patentverwertung Mikrowellenbehandlungstunnel
FR2076405A5 (el) * 1970-01-14 1971-10-15 Materiel Telephonique
US3654417A (en) * 1970-10-30 1972-04-04 Litton Precision Prod Inc Microwave oven including air flow system
JPS52587B2 (el) * 1972-04-11 1977-01-08
FR2227230A1 (en) * 1973-04-27 1974-11-22 Mauviel Michel Drying of sludge and town refuse - is effected by high frequency waves without incineration
FR2327700A1 (fr) * 1975-10-09 1977-05-06 Meisel Nicolas Four tunnel a micro-ondes pour le traitement en continu de produits alimentaires
FR2428369A1 (fr) * 1978-06-08 1980-01-04 Cim Lambda Int Sarl Procede et dispositif pour le traitement thermique d'objets par emission de micro-ondes
GB2054330A (en) * 1979-07-17 1981-02-11 Unicorn Ind Ltd Microwave heat treatment apparatus

Also Published As

Publication number Publication date
GR75434B (el) 1984-07-17
PT75071B (en) 1984-01-04
ES513491A0 (es) 1983-03-16
PT75071A (en) 1982-07-01
IE52949B1 (en) 1988-04-13
ES8305176A1 (es) 1983-03-16
IE821545L (en) 1982-12-29
CA1190605A (en) 1985-07-16
EP0069105A1 (fr) 1983-01-05
NL8103118A (nl) 1983-01-17
ATE19334T1 (de) 1986-05-15
DE3270591D1 (en) 1986-05-22

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