EP0334772A1 - Gerät und Ofen zum Erwärmen und Kochen von Substanzen mit Mikrowellen - Google Patents

Gerät und Ofen zum Erwärmen und Kochen von Substanzen mit Mikrowellen Download PDF

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Publication number
EP0334772A1
EP0334772A1 EP89420081A EP89420081A EP0334772A1 EP 0334772 A1 EP0334772 A1 EP 0334772A1 EP 89420081 A EP89420081 A EP 89420081A EP 89420081 A EP89420081 A EP 89420081A EP 0334772 A1 EP0334772 A1 EP 0334772A1
Authority
EP
European Patent Office
Prior art keywords
cooking
oven
enclosure
cavity
microwave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89420081A
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English (en)
French (fr)
Other versions
EP0334772B1 (de
Inventor
Georges Pralus
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT89420081T priority Critical patent/ATE95370T1/de
Publication of EP0334772A1 publication Critical patent/EP0334772A1/de
Application granted granted Critical
Publication of EP0334772B1 publication Critical patent/EP0334772B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S99/00—Foods and beverages: apparatus
    • Y10S99/14—Induction heating

Definitions

  • the present invention relates to the field of reheating and cooking of various products and it relates, more particularly, to the field of reheating or cooking by applying microwaves.
  • the heating or cooking of various products by microwave is carried out by placing such products on a support placed in a closed application cavity.
  • microwaves actually makes it possible to reheat or cook a product, we find that by doing so, it, reheated or cooked, no longer has the same qualities as those presented by the same product subjected to a different heating or cooking mode.
  • the apparatus comprises a container transparent to microwaves and containing, at least in part, a container reflecting microwaves and having a perforated bottom spaced from the bottom of the transparent container to delimit a tank capable of containing a water reserve.
  • the device is completed with a cover.
  • this device brings a positive result, it should be noted that it is of a complex and bulky structure to which are attached two negative aspects which are unacceptable for a wide commercial distribution.
  • the first lies in the cost and practicality of use, such as installation and cleaning.
  • the second is the significant reduction in capacity useful clean and that of the application cavities of microwave ovens.
  • the present invention intends to remedy the above drawbacks by proposing a new appliance for cooking or reheating products and, more particularly, foodstuffs by applying microwave energy.
  • the device according to the invention is particularly designed to preserve the intrinsic qualities of the products and, in particular, organoleptic and nutritional of a foodstuff, and to offer a possibility of control of cooking or reheating on the surface, in undercoat or at the heart of a product.
  • Another objective of the apparatus according to the invention is to make it possible to cook or reheat by microwaves preserving the softness of the foodstuffs, in a manner analogous to the traditional mode of cooking by oven or by steam.
  • Another objective of the invention is to propose a cooking or reheating device which offers the additional advantage of constituting, at least partially, a thermal accumulator making it possible to keep the product warm, for a determined period, after cooking or reheating. having been subjected to microwave application.
  • the cooking-heating process of various products in a microwave oven defining an application cavity connected to a microwave generator and accessible by a transparent window door is characterized in that '' it consists in delimiting, in the cavity application, a cooking-heating chamber open on the front of the oven, at least coincident with the door window and intended to contain the products, by means of an insertable element in said cavity, comprising at least one interposed wall between the enclosure and the generator and made of porous material permeable to microwave energy and provided with a waterproof coating, except on its face directed towards the enclosure.
  • Fig. 1 shows a microwave oven 1 comprising, for example at the rear, a generator compartment 2 and, at the front, a compartment 3 for use delimiting an application cavity 4 open on the front 5 and provided with a door 6 having, as is known, a glazed panel 7 .
  • the device representing an insertable element in the cavity 4 , consists of a plate 8 made ( fig. 2 ) of a porous material 9 , such as clay or sandstone, compatible with the food function and permeable to microwaves.
  • a porous material 9 such as clay or sandstone, compatible with the food function and permeable to microwaves.
  • the porous nature of the raw material of the plate 8 must be understood as responding to the ability to be able to ensure the retention of a reserve of water.
  • the plate has a constant thickness which can be chosen according to the water retention power. that it is desired to confer.
  • the plate comprises, on all its faces, apart from a main face, such as 8 has a coating 10 of a barrier material to water, transparent to microwaves, preferably food grade and adapted to support a relatively high temperature, at least equal to 100 ° C.
  • the coating 10 can be of any suitable nature compatible with the material 9 and, for example, formed by crazing, varnishing, enamelling.
  • the plate 8 is produced so as to be able to be inserted into the cavity 4, so as to be interposed between the products to be cooked or to be heated and the microwave generator. In general, the plate 8 is placed facing the opening of the waveguide.
  • the plate 8 thus defines, in the cavity 4, a cooking-heating chamber 11 , at least one side of which is formed by the material of the plate.
  • the mode of insertion of the plate 8 is chosen, in all cases, so that the face 8 a , devoid of the coating 10, is oriented towards the interior of the enclosure 11 .
  • the plate 8 is soaked with water by its retentive face, using any suitable means, in particular a dispenser of an aerosol.
  • a water reserve can also be done by soaking.
  • the microwave energy distributed in the enclosure 11, in which a product to be cooked or reheated is placed passes through the element 8 before reaching the product and causes the molecules of water retained by the material 9.
  • the plate 8 thus acts as an intermediate barrier, generating a vaporization of the included water which, due to the coating 10, diffuses into the confinement volume of the enclosure 11.
  • the vapor phase thus scattered occupies the entire enclosure, is stirred by the microwaves having passed through the wall 8 and thus contributes to creating a warming or cooking atmosphere that can be compared to the traditional steam method.
  • This vapor atmosphere close to saturation, bathes the product and opposes the vaporization of the free and trapped water molecules of this product which is thus preserved without degradation in a state favorable to a rise in heating or cooking temperature. by the microwaves that reach it.
  • the water molecules maintained inside the product thus contribute to maintaining, with the taste and vitamin principles which they retain, the organoleptic and nutritional qualities of the food.
  • These internal water molecules also make it possible to bring in a temperature rise progressively increasing inwards, from the periphery of the food which can thus be subjected to cooking increasing also in the same direction. It thus becomes possible to carry out core or non-core cooking and to carry out, in particular for meat, rare or point cooking, said to be impossible to obtain by microwave heating.
  • the steam atmosphere also makes it possible to obtain an uncooked sauce, resulting either from an addition, or from a condensation, or even flow of organic liquids, and thus having a cooked dish offering characteristics of palatability comparable to those obtained by traditional cooking methods.
  • the mass of material 9 constitutes a reserve making it possible to have a sufficient accumulation of water in the case where it is necessary to ensure a long reheating or cooking time.
  • Fig. 3 illustrates a development according to which the insertable element 8 is produced in the form of a bell 20, for example parallelepiped.
  • the bell is made of a porous material meeting the preceding conditions and is devoid of the coating 10 on its internal faces.
  • the bell can be inserted into the cavity 4, delimits by itself the enclosure 11 and has, in its peripheral wall, an open section 21 intended to be oriented on the front.
  • Bell 20 can be provided of a base 22 constituting the bottom of the enclosure 11.
  • the bell 20 has any suitable geometric shape and, preferably, a shape homothetic to the cavity 4 .
  • the element 8 is constituted by an envelope 20 which is integral with a microwave oven 1 .
  • the envelope 20 is produced to constitute an internal lining of the oven and to delimit the enclosure 11.
  • the envelope 20 is produced to have, as previously, an open face corresponding to the front of the product introduction-extraction oven or food to be reheated or cooked.
  • the open face is preferably defined by a planar edge 23 which fits into the plane P of the facade which is provided with a sealing gasket 24 capable of cooperating with a door 25.
  • the envelope 20 is made, as before, from a porous material 3 and comprises, with the exclusion of its internal faces delimiting the enclosure 11, a coating 26 having the same characteristics as the coating 10.
  • the envelope 20 is associated, mounted or adapted in the furnace 1 to be adjacent at least by one outer face to a waveguide 27 equipped with a microwave generator not shown. It should be considered that the technical means of generation and routing of microwaves fall within the technique known to those skilled in the art and are not affected by the subject of the invention.
  • the microwaves transmitted by the guide 27 are distributed through at least one wall of the envelope 20 in the enclosure 11 in which they are reflected by an internal jacket 28 surrounding the faces of the envelope not adjacent to the guide. 27.
  • the channels 29 can be distributed in any suitable way to facilitate the dispersion of the water within the porous material.
  • the channels 29 can be simple holes made in the thickness of the porous material or perforated rods 32 inserted.
  • the tap or taps 31 are preferably constituted by solenoid valves, the supply of which is, for example, placed under the dependence of a selection switch and a timer, the operation of which is included at the start of the use cycle. from the oven.
  • the user can involve normal operation of the oven or operation with production and confinement of steam.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)
  • Cookers (AREA)
  • General Preparation And Processing Of Foods (AREA)
EP89420081A 1988-03-03 1989-03-02 Gerät und Ofen zum Erwärmen und Kochen von Substanzen mit Mikrowellen Expired - Lifetime EP0334772B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420081T ATE95370T1 (de) 1988-03-03 1989-03-02 Geraet und ofen zum erwaermen und kochen von substanzen mit mikrowellen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8802993 1988-03-03
FR8802993A FR2628187B1 (fr) 1988-03-03 1988-03-03 Appareil pour la cuisson ou le rechauffage de produits divers par application de micro-ondes et four en faisant application

Publications (2)

Publication Number Publication Date
EP0334772A1 true EP0334772A1 (de) 1989-09-27
EP0334772B1 EP0334772B1 (de) 1993-09-29

Family

ID=9364059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420081A Expired - Lifetime EP0334772B1 (de) 1988-03-03 1989-03-02 Gerät und Ofen zum Erwärmen und Kochen von Substanzen mit Mikrowellen

Country Status (8)

Country Link
US (1) US5026957A (de)
EP (1) EP0334772B1 (de)
JP (1) JPH01265487A (de)
AT (1) ATE95370T1 (de)
CA (1) CA1317645C (de)
DE (1) DE68909459T2 (de)
ES (1) ES2046517T3 (de)
FR (1) FR2628187B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718156A1 (fr) * 1994-03-30 1995-10-06 Mireur Georges Vaisselle chauffante à préhensions froides.
WO1996038076A1 (fr) * 1995-06-02 1996-12-05 Georges Pralus Procede et dispositif pour la diffusion de vapeur lors de la cuisson ou le rechauffage de produits divers
WO2008145624A1 (fr) * 2007-06-01 2008-12-04 Georges Pralus Couvercle amovible pour la cuisson ou le rechauffage d'aliments dans un four a micro-ondes
FR3124062A1 (fr) 2021-06-17 2022-12-23 Georges Parmentier Couvercle amovible pour la cuisson ou le rechauffage d'aliments au sein d'un four a micro-ondes

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704942B1 (fr) * 1993-05-03 1995-08-04 Prolabo Sa Four micro-ondes en particulier pour chauffage rapide a haute temperature.
FR2732451B1 (fr) * 1995-03-31 1997-06-27 Cidelcem Ind Dispositif de raccordement de deux segments successifs d'un four de tunnel de cuisson d'aliments
US6133558A (en) * 1996-06-24 2000-10-17 Matsushita Electric Industrial Co., Ltd. Microwave steam heater with microwave and steam generators controlled to equalize workpiece inner and surface temperatures
EP0952400B1 (de) * 1996-09-03 2003-04-09 Matsushita Electric Industrial Co., Ltd. Mikrowellen heizvorrichtung
US20060027570A1 (en) * 1999-04-22 2006-02-09 California Institute Of Technology, A Corporation Microwave bonding of MEMS component
US6137097A (en) 1999-08-13 2000-10-24 Smith; Rose Mary Resizable microwave oven liner apparatus and method
KR100606738B1 (ko) * 2005-03-07 2006-08-01 엘지전자 주식회사 커피 메이커 겸용 전자 레인지
US9879908B2 (en) * 2013-10-17 2018-01-30 Triglia Technologies, Inc. System and method of removing moisture from fibrous or porous materials using microwave radiation and RF energy
US11143454B2 (en) 2013-10-17 2021-10-12 Joseph P. Triglia, Jr. System and method of removing moisture from fibrous or porous materials using microwave radiation and RF energy
US11384980B2 (en) 2013-10-17 2022-07-12 Joseph P. Triglia, Jr. System and method for reducing moisture in materials or plants using microwave radiation and RF energy

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920174A (en) * 1957-06-28 1960-01-05 Raytheon Co Microwave ovens
DE1134779B (de) * 1960-12-12 1962-08-16 Robert Bosch Elektronik Ges Mi Einrichtung zur dielektrischen Erwaermung
DE1149473B (de) * 1960-06-14 1963-05-30 Alfred Neff Dr Mikrowellenerwaermungsgeraet zum Erwaermen von Guetern
US3701872A (en) * 1968-02-09 1972-10-31 Melvin L Levinson Heating and loading implement for microwave energy

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888542A (en) * 1955-09-28 1959-05-26 Raytheon Mfg Co Heating apparatus
US3854023A (en) * 1968-02-09 1974-12-10 M Levinson Microwave oven heating member
US4154861A (en) * 1976-05-19 1979-05-15 Smith Donald P Heat treatment of food products
JPS5922132B2 (ja) * 1978-05-08 1984-05-24 株式会社東芝 蒸気発生器付高周波加熱装置
US4316070A (en) * 1979-08-21 1982-02-16 Prosise Robert L Cookware with liquid microwave energy moderator
DE3106236C2 (de) * 1981-02-20 1986-11-27 Paul 8000 München Hirsch Zusatzvorrichtung für Mikrowellengeräte zum Kochen und Garen
US4481395A (en) * 1982-09-13 1984-11-06 Smith Charles M Restrictive insert for microwave ovens
US4728762A (en) * 1984-03-22 1988-03-01 Howard Roth Microwave heating apparatus and method
US4633052A (en) * 1985-08-26 1986-12-30 Beavers Jerry E Microwave oven with disposable liner bag
US4689458A (en) * 1986-07-21 1987-08-25 Aluminum Co. Of America Container system for microwave cooking
US4705927A (en) * 1986-08-14 1987-11-10 Aluminum Company Of America Cooking utensil for combined microwave and steam cooking

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920174A (en) * 1957-06-28 1960-01-05 Raytheon Co Microwave ovens
DE1149473B (de) * 1960-06-14 1963-05-30 Alfred Neff Dr Mikrowellenerwaermungsgeraet zum Erwaermen von Guetern
DE1134779B (de) * 1960-12-12 1962-08-16 Robert Bosch Elektronik Ges Mi Einrichtung zur dielektrischen Erwaermung
US3701872A (en) * 1968-02-09 1972-10-31 Melvin L Levinson Heating and loading implement for microwave energy

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718156A1 (fr) * 1994-03-30 1995-10-06 Mireur Georges Vaisselle chauffante à préhensions froides.
WO1996038076A1 (fr) * 1995-06-02 1996-12-05 Georges Pralus Procede et dispositif pour la diffusion de vapeur lors de la cuisson ou le rechauffage de produits divers
FR2734892A1 (fr) * 1995-06-02 1996-12-06 Pralus Georges Procede et dispositif pour la diffusion de vapeur lors de la cuisson ou le rechauffage de produits divers
WO2008145624A1 (fr) * 2007-06-01 2008-12-04 Georges Pralus Couvercle amovible pour la cuisson ou le rechauffage d'aliments dans un four a micro-ondes
FR2916618A1 (fr) * 2007-06-01 2008-12-05 Georges Pralus Couvercle amovible pour la cuisson ou le rechauffage d'aliments dans un four a micro-ondes.
US8367989B2 (en) 2007-06-01 2013-02-05 George Pralus Removable lid for cooking or heating food in a microwave oven
FR3124062A1 (fr) 2021-06-17 2022-12-23 Georges Parmentier Couvercle amovible pour la cuisson ou le rechauffage d'aliments au sein d'un four a micro-ondes

Also Published As

Publication number Publication date
DE68909459D1 (de) 1993-11-04
JPH0445956B2 (de) 1992-07-28
JPH01265487A (ja) 1989-10-23
FR2628187B1 (fr) 1994-01-21
CA1317645C (en) 1993-05-11
FR2628187A1 (fr) 1989-09-08
US5026957A (en) 1991-06-25
DE68909459T2 (de) 1994-02-17
ATE95370T1 (de) 1993-10-15
ES2046517T3 (es) 1994-02-01
EP0334772B1 (de) 1993-09-29

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