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EP0364402A1 - Device for preventing sparking in microwave apparatuses - Google Patents

Device for preventing sparking in microwave apparatuses Download PDF

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Publication number
EP0364402A1
EP0364402A1 EP89810744A EP89810744A EP0364402A1 EP 0364402 A1 EP0364402 A1 EP 0364402A1 EP 89810744 A EP89810744 A EP 89810744A EP 89810744 A EP89810744 A EP 89810744A EP 0364402 A1 EP0364402 A1 EP 0364402A1
Authority
EP
European Patent Office
Prior art keywords
container
strip
edge
wall
cooking chamber
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Withdrawn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
EP89810744A
Other languages
German (de)
French (fr)
Inventor
Max Bolliger
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
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 Alusuisse Lonza Services Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0364402A1 publication Critical patent/EP0364402A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
    • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within
    • B65D2581/3437—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within specially adapted to be heated by microwaves
    • B65D2581/3486—Dielectric characteristics of microwave reactive packaging
    • B65D2581/3489—Microwave reflector, i.e. microwave shield

Definitions

  • the invention relates to a device for preventing spark flashover between an electrically conductive container and the cooking space wall in a microwave oven.
  • the inventor has set itself the goal of creating a simple and inexpensive device with which the sparkover mentioned above can be prevented.
  • a device leads to the achievement of the object according to the invention.
  • Advantageous embodiments of the invention result from the further claims.
  • the length of the strip-shaped spacers is preferably chosen so that it has a maximum of the length of the diagonal of the container.
  • the required distance between the container and the cooking space wall with two spacers Reached on all sides and the spacers can be packed without changing the outer packaging.
  • a heat-resistant plastic is selected as the material for the spacers, they also serve as handles for removing the hot metal shell from the cooking space.
  • a container A made of an aluminum foil which is painted on the outside and laminated on the inside with plastic consists of a base part 1, a container wall 2 and a sealing edge 3 projecting from the container wall 2 parallel to the base part 1 the drawing, not shown - sealed lid film, which is removed in each case before the introduction of the container A in a microwave oven.
  • 1, 3 strips 4 made of a heat-resistant plastic are arranged on two opposite sides of the container A on the sealing edge.
  • the long side of the strips 4 with a length 1 and a width b protrude the edge of the sealing edge 3 by a measure r, the broad sides by a measure s.
  • the strips 4 ensure that the container A is at a minimum distance r or s from the cooking chamber wall 5 of a microwave oven.
  • the strip 4 is designed as a double strip 4a, b and encloses the sealing edge 3.
  • the strip 4a with an angled strip part 6a partially overlaps the inner part of the container wall 2 and thus prevents the strip 4 from slipping off the sealing edge 3.
  • the strip 4 is designed as a double strip 4c, d.
  • the sealing edge 3 is shaped as a rolled edge 3c and on the other hand the double strip 4c, d is provided with opposing recesses 6c, d which engage behind the rolled edge 3c.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Package Specialized In Special Use (AREA)
  • Cookers (AREA)

Abstract

In order to prevent sparking between an electrically conductive container and the cooking chamber wall in a microwave apparatus, a strip-shaped spacer (4) made of electrically non-conductive material is arranged at least on the rim (3) of the container (A) near the cooking chamber wall (5) of the microwave apparatus. Spacers produced from thermostable plastic serve simultaneously as carrying handles for removing the hot container from the cooking chamber. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Verhinderung des Funkenüberschlages zwischen einem elektrisch leitenden Behälter und der Garraumwand in einem Mikrowellengerät.The invention relates to a device for preventing spark flashover between an electrically conductive container and the cooking space wall in a microwave oven.

Werden Metallschalen berührend oder sehr nahe der Garraum­wand eines Mikrowellengerätes positioniert, d.h. bis zu wenigen Millimetern Zwischenraum, kann zwischen Behälter und Garraumwand Funkenüberschlag auftreten. Die Funkenbil­dung hat auf das Gerät praktisch keinen schädlichen Ein­fluss, jedoch ist die psychologische Wirkung in den meisten Fällen sehr negativ. Die bei der Hausfrau entstehende Angst vor der Funkenbildung, die mit einem Kurzschluss in einer Steckdose verglichen wird, führt zu einer Abneigung gegen Aluminiumschalen.Are metal trays positioned touching or very close to the wall of a microwave oven, i.e. A gap of up to a few millimeters can occur between the container and the cooking space wall. The sparking has practically no harmful influence on the device, but the psychological effect is in most cases very negative. The housewife's fear of sparking, which is compared to a short circuit in an electrical outlet, leads to an aversion to aluminum shells.

Das Beipacken eines überstehenden Kunststoffdeckels, der einen genügenden Abstand zwischen Garraumwand und Behälter­rand gewährleistet, ist nicht praktisch. Die Umverpackung müsste dazu vergrössert werden, was eine kostspielige Um­stellung der Abpacklinien bedingen würde.It is not practical to include a protruding plastic lid that ensures a sufficient distance between the cooking space wall and the edge of the container. The outer packaging would have to be enlarged, which would necessitate an expensive change of the packaging lines.

Angesichts dieser Gegebenheiten hat sich der Erfinder das Ziel gesetzt, eine einfache und kostengünstige Vorrichtung zu schaffen, mit welcher der eingangs erwähnte Funkenüber­schlag verhindert werden kann.In view of these circumstances, the inventor has set itself the goal of creating a simple and inexpensive device with which the sparkover mentioned above can be prevented.

Zur erfindungsgemässen Lösung der Aufgabe führt eine Vor­richtung gemäss dem kennzeichnenden Teil von Anspruch 1. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den weiteren Ansprüchen.A device according to the characterizing part of claim 1 leads to the achievement of the object according to the invention. Advantageous embodiments of the invention result from the further claims.

Die Länge der streifenförmigen Abstandshalter wird bevor­zugt so gewählt, dass sie maximal die Länge der Diagonale des Behälters aufweist. Dadurch wird einerseits der be­nötigte Abstand Behälter-Garraumwand mit zwei Abstandshal­ tern allseitig erreicht und die Abstandshalter können an­dererseits ohne Aenderung der Umverpackung beigepackt wer­den.The length of the strip-shaped spacers is preferably chosen so that it has a maximum of the length of the diagonal of the container. On the one hand, the required distance between the container and the cooking space wall with two spacers Reached on all sides and the spacers can be packed without changing the outer packaging.

Wird als Material für die Abstandshalter ein wärmebestän­diger Kunststoff gewählt, dienen diese zusätzlich als Trag­griffe zur Entnahme der heissen Metallschale aus dem Gar­raum.If a heat-resistant plastic is selected as the material for the spacers, they also serve as handles for removing the hot metal shell from the cooking space.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in

  • Fig. 1 die Draufsicht auf einen Behälter mit Abstandshal­tern;
  • Fig. 2 den Querschnitt durch einen erfindungsgemässen Ab­standshalter;
  • Fig. 3 den Querschnitt durch einen anderen erfindungsge­mässen Abstandshalter.
Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in
  • Figure 1 is a plan view of a container with spacers.
  • 2 shows the cross section through a spacer according to the invention;
  • Fig. 3 shows the cross section through another spacer according to the invention.

Ein Behälter A aus einer aussen lackierten und innen mit Kunststoff kaschierten Aluminiumfolie besteht aus einem Bodenteil 1, einer Behälterwand 2 und einem von der Behäl­terwand 2 parallel zum Bodenteil 1 abragenden Siegelrand 3. Zum Verschliessen des Behälters A ist auf dem Siegelrand 3 eine -- in der Zeichnung nicht dargestellte -- Deckel­folie aufgesiegelt, die jeweils vor dem Einbringen des Be­hälters A in ein Mikrowellengerät entfernt wird.A container A made of an aluminum foil which is painted on the outside and laminated on the inside with plastic consists of a base part 1, a container wall 2 and a sealing edge 3 projecting from the container wall 2 parallel to the base part 1 the drawing, not shown - sealed lid film, which is removed in each case before the introduction of the container A in a microwave oven.

Gemäss Fig. 1 sind an zwei gegenüber liegenden Seiten des Behälters A am Siegelrand 3 Streifen 4 aus einem wärme­beständigen Kunststoff angeordnet. Die Längsseite der Streifen 4 mit einer Länge 1 und einer Breite b überragen die Kante des Siegelrandes 3 um ein Mass r, die Breitseiten um ein Mass s. Die Streifen 4 stellen sicher, dass der Be­hälter A zur Garraumwand 5 eines Mikrowellengerätes einen minimalen Abstand r bzw. s aufweist.1, 3 strips 4 made of a heat-resistant plastic are arranged on two opposite sides of the container A on the sealing edge. The long side of the strips 4 with a length 1 and a width b protrude the edge of the sealing edge 3 by a measure r, the broad sides by a measure s. The strips 4 ensure that the container A is at a minimum distance r or s from the cooking chamber wall 5 of a microwave oven.

In Fig. 2 ist der Streifen 4 als Doppelstreifen 4a,b ausge­bildet und umschliesst den Siegelrand 3. Hierbei übergreift der Streifen 4a mit einem abgewinkelten Streifenteil 6a teilweise den inneren Teil der Behälterwand 2 und verhin­dert damit ein Abrutschen des Streifens 4 vom Siegelrand 3.2, the strip 4 is designed as a double strip 4a, b and encloses the sealing edge 3. Here, the strip 4a with an angled strip part 6a partially overlaps the inner part of the container wall 2 and thus prevents the strip 4 from slipping off the sealing edge 3.

In Fig. 3 ist der Streifen 4 als Doppelstreifen 4c,d ausge­bildet. Zur Vermeidung des Abrutschens des Streifens 4 vom Siegelrand 3 ist einerseits der Siegelrand 3 als Rollrand 3c geformt und andererseits der Doppelstreifen 4c,d mit ge­genüber liegenden Einformungen 6c,d versehen, die den Roll­rand 3c hintergreifen.In Fig. 3, the strip 4 is designed as a double strip 4c, d. To prevent the strip 4 from slipping off the sealing edge 3, on the one hand the sealing edge 3 is shaped as a rolled edge 3c and on the other hand the double strip 4c, d is provided with opposing recesses 6c, d which engage behind the rolled edge 3c.

Claims (4)

1. Vorrichtung zur Verhinderung des Funkenüberschlages zwischen einem elektrisch leitenden Behälter und der Garraumwand in einem Mikrowellengerät,
dadurch gekennzeichnet,
dass zumindest an dem der Garraumwand (5) des Mikrowel­lengerätes nahen Rand (3) des Behälters (A) ein strei­fenförmiger Abstandshalter (4) aus elektrisch nicht leitendem Material angeordnet ist.1. Device for preventing the sparkover between an electrically conductive container and the cooking space wall in a microwave oven,
characterized,
that a strip-shaped spacer (4) made of electrically non-conductive material is arranged at least on the edge (3) of the container (A) near the cooking chamber wall (5) of the microwave oven. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Abstandshalter (4) als Doppelstreifen ausge­bildet ist und den Rand (3) des Behälters (A) um­schliesst.2. Device according to claim 1, characterized in that the spacer (4) is designed as a double strip and encloses the edge (3) of the container (A). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass ein Streifenteil (6a) des Abstandshalters (4a) den inneren Teil der Behälterwand (2) teilweise übergreift (Fig. 2).3. Device according to claim 2, characterized in that a strip part (6a) of the spacer (4a) partially overlaps the inner part of the container wall (2) (Fig. 2). 4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Rand (3) des Behälters (A) als Rollrand (3a) ausgebildet ist und der Doppelstreifen (4c,d) gegen­überstehende Einformungen (6b,c) aufweist, die den Rollrand (3a) hintergreifen (Fig. 3).4. The device according to claim 2, characterized in that the edge (3) of the container (A) is designed as a rolled edge (3a) and the double strip (4c, d) has opposing recesses (6b, c) which the rolled edge (3a ) reach behind (Fig. 3).
EP89810744A 1988-10-12 1989-10-02 Device for preventing sparking in microwave apparatuses Withdrawn EP0364402A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3805/88A CH676697A5 (en) 1988-10-12 1988-10-12
CH3805/88 1988-10-12

Publications (1)

Publication Number Publication Date
EP0364402A1 true EP0364402A1 (en) 1990-04-18

Family

ID=4263827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810744A Withdrawn EP0364402A1 (en) 1988-10-12 1989-10-02 Device for preventing sparking in microwave apparatuses

Country Status (2)

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EP (1) EP0364402A1 (en)
CH (1) CH676697A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017104A1 (en) * 1991-04-03 1992-10-15 Sous Chef Ltd. Reusable microwave container handling device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865301A (en) * 1973-11-15 1975-02-11 Trans World Services Partially shielded food package for dielectric heating
US4033009A (en) * 1975-01-27 1977-07-05 Sage Laboratories, Inc. Handles for supporting a dish or the like in a microwave oven
DE3242402A1 (en) * 1981-11-19 1983-05-26 Campbell Soup Co., 08101 Camden, N.J. MICROWAVE SHIELD AND METHOD FOR USING THE SHIELD FOR FROZEN FOODSTUFFS
EP0161739A2 (en) * 1984-02-15 1985-11-21 Alcan International Limited Microwave heating package
US4558198A (en) * 1984-12-03 1985-12-10 Aluminum Company Of America Metal container system for use in microwave ovens
US4626641A (en) * 1984-12-04 1986-12-02 James River Corporation Fruit and meat pie microwave container and method
EP0282015A2 (en) * 1987-03-10 1988-09-14 James River Corporation Microwave interactive film, microwave interactive laminate and method for producing microwave interactive laminate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865301A (en) * 1973-11-15 1975-02-11 Trans World Services Partially shielded food package for dielectric heating
US4033009A (en) * 1975-01-27 1977-07-05 Sage Laboratories, Inc. Handles for supporting a dish or the like in a microwave oven
DE3242402A1 (en) * 1981-11-19 1983-05-26 Campbell Soup Co., 08101 Camden, N.J. MICROWAVE SHIELD AND METHOD FOR USING THE SHIELD FOR FROZEN FOODSTUFFS
EP0161739A2 (en) * 1984-02-15 1985-11-21 Alcan International Limited Microwave heating package
US4558198A (en) * 1984-12-03 1985-12-10 Aluminum Company Of America Metal container system for use in microwave ovens
US4626641A (en) * 1984-12-04 1986-12-02 James River Corporation Fruit and meat pie microwave container and method
EP0282015A2 (en) * 1987-03-10 1988-09-14 James River Corporation Microwave interactive film, microwave interactive laminate and method for producing microwave interactive laminate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017104A1 (en) * 1991-04-03 1992-10-15 Sous Chef Ltd. Reusable microwave container handling device

Also Published As

Publication number Publication date
CH676697A5 (en) 1991-02-28

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