EP1852934B1 - Cooking apparatus containing a coated microwave connection - Google Patents

Cooking apparatus containing a coated microwave connection Download PDF

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Publication number
EP1852934B1
EP1852934B1 EP06290732A EP06290732A EP1852934B1 EP 1852934 B1 EP1852934 B1 EP 1852934B1 EP 06290732 A EP06290732 A EP 06290732A EP 06290732 A EP06290732 A EP 06290732A EP 1852934 B1 EP1852934 B1 EP 1852934B1
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EP
European Patent Office
Prior art keywords
cooking device
transmitter unit
structures
dielectric
conductor
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Not-in-force
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EP06290732A
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German (de)
French (fr)
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EP1852934A1 (en
Inventor
Peter Kohlstrung
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Topinox SARL
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Topinox SARL
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Publication date
Application filed by Topinox SARL filed Critical Topinox SARL
Priority to DE502006000804T priority Critical patent/DE502006000804D1/en
Priority to EP06290732A priority patent/EP1852934B1/en
Priority to JP2007121764A priority patent/JP2007299757A/en
Priority to US11/743,551 priority patent/US20070259537A1/en
Publication of EP1852934A1 publication Critical patent/EP1852934A1/en
Application granted granted Critical
Publication of EP1852934B1 publication Critical patent/EP1852934B1/en
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    • 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
    • H05B6/70—Feed lines
    • H05B6/702—Feed lines using coaxial cables

Definitions

  • the present invention relates to a cooking appliance with a cooking chamber, one of them via at least one cooking chamber wall separate technical room and a microwave plug connection.
  • a cooking appliance with a microwave generating device is, for example, in the non-prepublished EP 05026912.5 described.
  • a coaxial or strip conductor for transporting microwaves in an accessory can be integrated within a cooking chamber and provided with a contact and / or coupling device in order to be connectable to a microwave generating device arranged outside the cooking chamber.
  • the contact and / or coupling device can be electrically and / or magnetically shielded, vapor-tight and / or stable up to a temperature of at least 250 ° and comprise a plug connection. Further details of this connector are not described.
  • the US6403939 is considered to be the closest prior art. It discloses a cooking appliance with a cooking chamber, one of them via at least one cooking chamber wall separate technical room and a microwave plug connection.
  • the US 5,977,841 discloses a generic non-contact microwave connector for transmitting radio frequency energy through a hull with the interposition of a dielectric layer.
  • two coaxial plug parts are used, in which a respective dielectric material is arranged between the respective inner and outer conductors and between the two plug parts.
  • the dielectric material is intended to prevent the metal of the connector parts from corrosion by salt water or the growth of marine life.
  • the impedance of the known microwave plug-in connection is set by the thickness of the dielectric layer (s) in such a way that a transmission of the microwaves with a wave position ⁇ with as little loss as possible can take place.
  • Teflon As a preferred material for each dielectric layer Teflon is called.
  • the present invention is therefore based on the object to further develop the generic microwave connector such that it overcomes the disadvantages of the prior art.
  • a thermally and mechanically stable microwave plug-in connection is to be provided, which allows use in a cooking appliance in everyday kitchen operation.
  • the microwave connector should be as simple and inexpensive as possible and minimize the susceptibility to interference with ease of use. Also, in the transmission of microwave energy through the connection, the losses should be kept as low as possible.
  • the dielectric coating is elastically connected to the metallic substrate.
  • the dielectric coating is porous.
  • the dielectric coating is at least partially sealed with a mineral melt for stabilization.
  • the dielectric coating consists of a ceramic material.
  • the dielectric coating comprises aluminum oxide.
  • the dielectric coating essentially completely fills the gap between the ⁇ / 4 structures.
  • the dielectric coating serves to influence the electric field between the ⁇ / 4 structures.
  • the transmitter unit comprises a coaxial line with an inner conductor and an outer conductor, wherein the inner conductor and the outer conductor are each designed as a metallic conductor in conjunction with a ⁇ / 4 structure
  • the receiver unit a coaxial line with an inner conductor and an outer conductor comprises, wherein the inner conductor and the outer conductor are each designed as a metallic conductor in conjunction with a ⁇ / 4 structure, the ⁇ / 4 structures of the inner conductor and / or the ⁇ / 4 structures of the outer conductor or can be plugged together
  • At least one of the ⁇ / 4 structures of the inner conductor is at least partially provided with a dielectric coating
  • the ⁇ / 4 structure of the inner conductor of the transmitter unit is at least partially provided with a dielectric coating.
  • the outer conductor of the transmitter unit and the receiver unit are galvanically connected to each other or the ⁇ / 4 structure of the outer conductor of the transmitter unit is at least partially provided with a dielectric coating.
  • each inner conductor and / or each outer conductor and / or each ⁇ / 4 structure comprises stainless steel and / or copper and / or brass.
  • At least one dielectric seal in the transmitter unit and / or the receiving unit galvanically isolate the respective inner conductor from the respective outer conductor, at least in the region of the respective ⁇ / 4 structures.
  • the dielectric seal terminates the coaxial line of the transmitter unit watertight at least at its end remote from the microwave source, preferably with the interposition of at least one O-ring seal.
  • Embodiments of the invention may be characterized in that one of the inner conductors is in operative connection with a, in particular pin-like, projection, while the other inner conductor which can be plugged together has a recess adapted to said projection, wherein preferably both the projection have a ⁇ / 4 structure and the recess represent a ⁇ / 4 structure.
  • the projection is part of a contacting, which is positively and / or non-positively connected to the associated inner conductor.
  • the invention proposes that the dielectric seal be arranged between the contacting means and the outer conductor associated with the associated inner conductor, preferably with the interposition of at least one O-ring seal.
  • the ⁇ / 4 structures of the outer conductors of the transmitter unit and of the receiver unit can be plugged onto one another, in particular laid flat on one another.
  • the invention likewise provides a cooking appliance with a cooking chamber, a technical space separated therefrom via at least one cooking chamber wall, and a microwave plug connection according to the invention, in which the transmitter unit is arranged in the cooking space and receiver unit in the cooking space.
  • the transmitter unit is mechanically, in particular releasably connected to the cooking chamber wall.
  • the invention again proposes that the ⁇ / 4 structure of the outer conductor of the transmitter unit has a thread.
  • the receiver unit of an accessory of the cooking appliance preferably a post for a Garguttragegestell is included.
  • the invention is thus based on the surprising finding that a microwave plug connection is thermally and mechanically so stable that it can also be used in a cooking appliance for large and commercial kitchens by using a dielectric as one fixed to a metallic substrate which is connected to a (coaxial) Line is connected and has a ⁇ / 4 structure, connected coating is provided and an at least partially galvanic isolation when connecting the (coaxial) line with another (coaxial) line for transmitting microwaves of wavelength ⁇ is used.
  • the further line can also be equipped with such a dielectric coating.
  • the compound according to the invention is characterized in that the coating is applied elastically and porous on the substrate.
  • the mechanical stability of the connection can also be increased by the fact that the dielectric coating consists of a ceramic material, preferably aluminum oxide, and is advantageously also sealed with a mineral melt.
  • a garraum workede receiver unit and / or a technical room side transmitter unit is provided with a dielectric coating.
  • another dielectric may be arranged on the engineering space side relative to the fluid seal, namely between the inner and outer conductors of the transmitter unit, which galvanically separates the inner and outer conductors of the transmitter unit from one another.
  • the receiver and transmitter unit according to the invention are designed as parts of a retaining, releasable plug. With the help of a thread in the region of the ⁇ / 4 structure of the outer conductor of the transmitter unit, it can be screwed tightly to a cooking chamber wall. Care must be taken that the thickness of the dielectric coating is suitable for the ⁇ / 4 geometry of the compound.
  • FIG. 1 a microwave connector 100 according to the invention for use in a cooking appliance (not shown) is shown with cooking space 10 between a cooking chamber and a technical room, with a garraum disorderen plug in the form of a receiver unit 101 and a techno-room-side plug in the form of a transmitter unit 102nd
  • microwaves of a wavelength ⁇ from a microwave source (not shown) of the microwave plug connection 100 are fed via an incoming coaxial microwave line with outer conductor 12 and inner conductor 13. Via a contacting means 14, the microwaves are supplied from the feeding inner conductor 13 to a transmitter inner conductor 5 with ⁇ / 4 structure, while the outer conductor 12 extends into a transmitter outer conductor with ⁇ / 4 structure.
  • the ⁇ / 4 structures of the transmitter conductors 5, 9 are galvanically and spatially separated from one another by a watertight dielectric 7, with the interposition of an O-ring seal 15.
  • This transmitter unit 102 is fixed to the cooking chamber walls with the aid of a fastening element 11 10 connected.
  • the ⁇ / 4 structure of the transmitter outer conductor 9 has a garraum workede dielectric coating 8.
  • the ⁇ / 4 structure of the transmitter inner conductor 5 has a dielectric coating 6.
  • the receiver unit 101 can be plugged, which in turn has a continuing microwave inner conductor 1 and a continuing microwave outer conductor 3, which are each connected to a receiving ⁇ / 4 structure 3 and 4 respectively.
  • the microwave connector 100 is shown in the plugged state, wherein the receiver unit 101 both positive and non-positive, z. B. with the help of a mother, with the transmitter unit 102 may be firmly connected.
  • the geometry of the ⁇ / 4 structures 2, 4, 5, 9, the dielectric coatings 6, 8 and the sealing dielectric 7 are designed so that the incoming into the transmitter unit 102 microwaves can be transmitted as lossless as possible in the receiver unit 101. This is ensured by the adaptation of the geometry of the components to the wavelength of the microwave ⁇ .
  • the electric and magnetic fields of the microwaves penetrate the non-conductive dielectric layers or coatings 6, 8 and thus transfer their energy from the ⁇ / 4 structures 5, 9 of the transmitter unit 102 to the ⁇ / 4 structures 2, 4 of the receiver unit 101. From there, the microwave energy is guided by the continuing coaxial microwave line 1, 3 further into the cooking chamber interior.
  • the coaxial receiver line 1, 2 in the cooking chamber also serves as a support structure of a cooking support structure (not shown), as in the non-prepublished EP 05026912.5 described.
  • the microwave energy can then, as in the non-prepublished DE 10 2006 007 734.2 proposed to be fed with a suitable antenna structure food in the oven.
  • the coatings 6, 8 of the ⁇ / 4 structures 5, 9 of the transmitter unit 102 can be produced by means of chemical vapor deposition (CVD) or by means of the deposition of a plasma in the form of a porous ceramic (for example aluminum oxide).
  • CVD chemical vapor deposition
  • a plasma in the form of a porous ceramic (for example aluminum oxide).
  • a coating technique is for example in the US 2005/0260411 A1 described.
  • the thus applied dielectric coatings 6, 8 are characterized by a high mechanical hardness and by a high chemical resistance, which corresponds to that of the metallic parts of the microwave connector 100 of z. As copper, iron, brass or stainless steel far exceeds.
  • the application of the porous ceramic layer by means of CVD or plasma techniques achieves a mechanically extremely stable connection of the dielectric ceramic to the metallic substrate, which also has elastic properties.
  • the microwave connector according to the invention can be inserted very often and without much care and pulled apart again.
  • an operation of the cooking appliance with chemically aggressive substances at high temperatures is possible by the ceramic coating, without the metal of the microwave connector is chemically decomposed.
  • Due to the porous elastic connection with the metallic substrate is further at high heat fluxes by the microwave connector according to the invention, as they are unavoidable when used in cooking appliances and in which heat and cool the substrate and the coating at different speeds or part of the mechanical forces caused by different thermal expansion coefficients of the two materials added. The coatings will thus not flake off the metallic substrate even at high thermal loads.
  • the coatings may be coated with a mineral melt which fills the cavities of the porous ceramic and thus an additional stabilization of the dielectric layer is used without disturbing the dielectric properties.
  • both the ⁇ / 4 structures 5, 9 of the transmitter unit 102, and the ⁇ / 4 structures 2, 4 of the receiver unit 101 are provided with a dielectric coating.
  • only the ⁇ / 4 structures of the receiver unit 101 may be coated. In any case, care must be taken that the coatings do not give rise to excessive deviations from the optimum ⁇ / 4 geometry of the microwave connector 100 according to the invention.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cookers (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Description

Die vorliegende Erfindung betrifft ein Gargerät mit einem Garraum, einem davon über zumindest eine Garraumwand getrennten Technikraum und einer Mikrowellensteckverbindung.The present invention relates to a cooking appliance with a cooking chamber, one of them via at least one cooking chamber wall separate technical room and a microwave plug connection.

Ein Gargerät mit einer Mikrowellenerzeugungseinrichtung ist beispielsweise in der nicht-vorveröffentlichten EP 05026912.5 beschrieben. Danach kann ein Koaxial- oder Streifenleiter zum Transport von Mikrowellen in einem Zubehörteil innerhalb eines Garraums integriert und mit einer Kontakt- und/oder Kopplungseinrichtung versehen sein, um mit einer außerhalb des Garraums angeordneten Mikrowellenerzeugungseinrichtung verbindbar zu sein. Die Kontakt- und/oder Kopplungseinrichtung kann elektrisch und/oder magnetisch abgeschirmt, dampfdicht und/oder bis zu einer Temperatur von zumindest 250° stabil sein und eine Steckverbindung umfassen. Weitere Einzelheiten dieser Steckverbindung sind jedoch nicht beschrieben.A cooking appliance with a microwave generating device is, for example, in the non-prepublished EP 05026912.5 described. Thereafter, a coaxial or strip conductor for transporting microwaves in an accessory can be integrated within a cooking chamber and provided with a contact and / or coupling device in order to be connectable to a microwave generating device arranged outside the cooking chamber. The contact and / or coupling device can be electrically and / or magnetically shielded, vapor-tight and / or stable up to a temperature of at least 250 ° and comprise a plug connection. Further details of this connector are not described.

Die US6403939 wird als nächstliegender Stand der Technik angesehen. Es offenbart ein Gargerät mit einem Garraum, einem davon über zumindest eine Garraumwand getrennten Technikraum und einer Mikrowellensteckverbindung.The US6403939 is considered to be the closest prior art. It discloses a cooking appliance with a cooking chamber, one of them via at least one cooking chamber wall separate technical room and a microwave plug connection.

Die US 5,977,841 offenbart eine gattungsgemäße kontaktfreie Mikrowellensteckverbindung zur Übertragung von Hochfrequenzenergie durch einen Schiffsrumpf unter Zwischenschaltung einer dielektrischen Schicht. Dabei kommen zwei koaxiale Steckerteile zum Einsatz, bei denen sowohl zwischen dem jeweiligen Innen- und Außenleiter als auch zwischen den beiden Steckerteilen jeweils ein dielektrisches Material angeordnet ist. Das dielektrische Material soll dabei das Metall der Steckerteile vor Korrosion durch Salzwasser oder das Anwachsen von Meereslebewesen verhindern. Die Impedanz der bekannten Mikrowellensteckverbindung wird durch die Dicke der dielektrischen Schicht(en) derart eingestellt, daß eine möglichst verlustarme Übertragung der Mikrowellen mit einer Wellenlage λ stattfinden kann. Als bevorzugtes Material für jede dielektrische Schicht wird Teflon genannt. Zudem ist es aus der US 5,977,841 bekannt, λ/4-Effekte zur Vermeidung von Reflexionen auszunutzen, beispielsweise durch Anordnung eines Parallelkondensators in einem Abstand von λ/4 vom Dielektrikum zwischen den beiden Steckerteilen, in der jeweiligen Koaxialleitung.The US 5,977,841 discloses a generic non-contact microwave connector for transmitting radio frequency energy through a hull with the interposition of a dielectric layer. In this case, two coaxial plug parts are used, in which a respective dielectric material is arranged between the respective inner and outer conductors and between the two plug parts. The dielectric material is intended to prevent the metal of the connector parts from corrosion by salt water or the growth of marine life. The impedance of the known microwave plug-in connection is set by the thickness of the dielectric layer (s) in such a way that a transmission of the microwaves with a wave position λ with as little loss as possible can take place. As a preferred material for each dielectric layer Teflon is called. Moreover, it is from the US 5,977,841 Known to exploit λ / 4 effects to avoid reflections, for example, by arranging a parallel capacitor at a distance of λ / 4 from the dielectric between the two connector parts, in the respective coaxial line.

Nachteilig an diesen bekannten Mikrowellensteckverbindungen ist, daß sie weder den Temperaturen und Temperaturänderungen in einem Garraum noch den mechanischen Belastungen, denen eine solche Verbindung im täglichen Betrieb einer Groß- und Gewerbeküche ausgesetzt ist, gewachsen sind. Die hohen Temperaturen im Garraum, die 300 °C kurzfristig übersteigen können, zerstören organische Dielektrika wie beispielsweise Teflon. Die hohen thermischen Belastungen, die beispielsweise dadurch entstehen, daß eine kalte Flüssigkeit auf die heiße Mikrowellensteckverbindung treffen kann oder einfach nur der Garraum mit großem Energieeintrag geheizt wird, bewirken aufgrund der unterschiedlichen thermischen Ausdehnung von Metall und des Dielektrikums eine mechanische Belastung und schlußendlich die Zerstörung der Mikrowellehsteckverbindung. Ein weiteres Problem, daß sich aus den hohen und schnell ändernden Temperaturen im Garraum ergibt, ist die Veränderung der geometrischen Verhältnisse in der Mikrowellensteckverbindung durch thermische Ausdehnung. Die daraus resultierenden Abweichungen von einer optimalen λ/4-Geometrie resultieren in einer Erhöhung der Impedanz und damit in Verlusten bei der Energieübertragung durch die Mikrowellensteckverbindung.A disadvantage of these known microwave plug-in connections that they neither the temperatures and temperature changes in a cooking chamber nor the mechanical stresses that such a compound is exposed in the daily operation of a large and commercial kitchen grown. The high temperatures in the oven, which can exceed 300 ° C in the short term, destroy organic dielectrics such as Teflon. The high thermal loads caused, for example, by the fact that a cold liquid can hit the hot microwave plug connection or just the cooking chamber is heated with high energy input cause due to the different thermal expansion of metal and the dielectric mechanical stress and ultimately the destruction of Mikrowellehsteckverbindung. Another problem that arises from the high and rapidly changing temperatures in the oven, is the change in the geometric conditions in the microwave connector by thermal expansion. The resulting deviations from an optimal λ / 4 geometry result in an increase in the impedance and thus in losses in the energy transmission through the microwave connector.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, die gattungsgemäße Mikrowellensteckverbindung derart weiterzuentwickeln, daß sie die Nachteile des Stands der Technik überwindet. Insbesondere soll eine thermisch und mechanisch stabile Mikrowellensteckverbindung bereitgestellt werden, die den Einsatz in einem Gargerät im alltäglichen Küchenbetrieb ermöglicht. Zudem soll die Mikrowellensteckverbindung möglichst einfach und kostengünstig ausgebildet sein und bei einfacher Handhabung die Störanfälligkeit minimieren. Auch sollen bei der Übertragung von Mikrowellenenergie durch die Verbindung die Verluste möglichst gering gehalten werden.The present invention is therefore based on the object to further develop the generic microwave connector such that it overcomes the disadvantages of the prior art. In particular, a thermally and mechanically stable microwave plug-in connection is to be provided, which allows use in a cooking appliance in everyday kitchen operation. In addition, the microwave connector should be as simple and inexpensive as possible and minimize the susceptibility to interference with ease of use. Also, in the transmission of microwave energy through the connection, the losses should be kept as low as possible.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.

Dabei kann vorgesehen sein, daß die dielektrische Beschichtung elastisch mit dem metallischen Substrat verbunden ist.It can be provided that the dielectric coating is elastically connected to the metallic substrate.

Ferner kann vorgesehen sein, daß die dielektrische Beschichtung porös ist.Furthermore, it can be provided that the dielectric coating is porous.

Erfindungsgemäß wird auch vorgeschlagen, daß die dielektrische Beschichtung zur Stabilisierung zumindest bereichsweise mit einer Mineralschmelze versiegelt ist.According to the invention it is also proposed that the dielectric coating is at least partially sealed with a mineral melt for stabilization.

Ferner kann vorgesehen sein, daß die dielektrische Beschichtung aus einem keramischen Material besteht.Furthermore, it can be provided that the dielectric coating consists of a ceramic material.

Auch wird erfindungsgemäß vorgeschlagen, daß die dielektrische Beschichtung Aluminiumoxid umfaßt.It is also proposed according to the invention that the dielectric coating comprises aluminum oxide.

Weiterhin kann vorgesehen sein, daß die dielektrische Beschichtung den Zwischenraum zwischen den λ/4-Strukturen im wesentlichen vollständig ausfüllt.Furthermore, it can be provided that the dielectric coating essentially completely fills the gap between the λ / 4 structures.

Erfindungsgemäß wird vorgeschlagen, daß die dielektrische Beschichtung der Beeinflußung des elektrischen Feldes zwischen den λ/4-Strukturen dient.According to the invention, it is proposed that the dielectric coating serves to influence the electric field between the λ / 4 structures.

Bevorzugte erfindungsgemäße Ausführungsbeispiele sind dadurch gekennzeichnet, daß die Sendereinheit eine Koaxialleitung mit einem Innenleiter und einem Außenleiter umfaßt, wobei der Innenleiter und der Außenleiter jeweils als metallischer Leiter in Verbindung mit einer λ/4-Struktur ausgeführt sind, die Empfängereinheit eine Koaxialleitung mit einem Innenleiter und einem Außenleiter umfaßt, wobei der Innenleiter und der Außenleiter jeweils als metallischer Leiter in Verbindung mit einer λ/4-Struktur ausgeführt sind, die λ/4-Strukturen der Innenleiter und/oder die λ/4-Strukturen der Außenleiter aufeinander- oder zusammensteckbar sind, und zumindest eine der λ/4-Strukturen der Innenleiter zumindest bereichsweise mit einer dielektrischen Beschichtung versehen ist, wobei vorzugsweise die λ/4-Struktur des Innenleiters der Sendereinheit zumindest bereichsweise mit einer dielektrischen Beschichtung versehen ist.Preferred embodiments of the invention are characterized in that the transmitter unit comprises a coaxial line with an inner conductor and an outer conductor, wherein the inner conductor and the outer conductor are each designed as a metallic conductor in conjunction with a λ / 4 structure, the receiver unit a coaxial line with an inner conductor and an outer conductor comprises, wherein the inner conductor and the outer conductor are each designed as a metallic conductor in conjunction with a λ / 4 structure, the λ / 4 structures of the inner conductor and / or the λ / 4 structures of the outer conductor or can be plugged together , At least one of the λ / 4 structures of the inner conductor is at least partially provided with a dielectric coating, wherein preferably the λ / 4 structure of the inner conductor of the transmitter unit is at least partially provided with a dielectric coating.

Dabei kann vorgesehen sein, daß die Außenleiter der Sendereinheit und der Empfängereinheit galvanisch miteinander verbunden sind oder die λ/4-Struktur des Außenleiters der Sendereinheit zumindest bereichsweise mit einer dielektrischen Beschichtung versehen ist.It can be provided that the outer conductor of the transmitter unit and the receiver unit are galvanically connected to each other or the λ / 4 structure of the outer conductor of the transmitter unit is at least partially provided with a dielectric coating.

Mit der Erfindung wird auch vorgeschlagen, daß jeder Innenleiter und/oder jeder Außenleiter und/oder jede λ/4-Struktur Edelstahl und/oder Kupfer und/oder Messing umfaßt.The invention also proposes that each inner conductor and / or each outer conductor and / or each λ / 4 structure comprises stainless steel and / or copper and / or brass.

Des Weiteren kann vorgeschlagen sein, daß zumindest eine dielektrische Dichtung in der Sendereinheit und/oder der Empfangseinheit den jeweiligen Innenleiter von dem jeweiligen Außenleiter zumindest im Bereich der jeweiligen λ/4-Strukturen galvanisch trennt.Furthermore, it may be proposed that at least one dielectric seal in the transmitter unit and / or the receiving unit galvanically isolate the respective inner conductor from the respective outer conductor, at least in the region of the respective λ / 4 structures.

Dabei wird vorgeschlagen, daß die dielektrische Dichtung die Koaxialleitung der Sendereinheit zumindest an ihrem der Mikrowellenquelle abgewandte Ende wasserdicht abschließt, vorzugsweise unter Zwischenschaltung zumindest einer O-Ring Dichtung.It is proposed that the dielectric seal terminates the coaxial line of the transmitter unit watertight at least at its end remote from the microwave source, preferably with the interposition of at least one O-ring seal.

Ausführungsformen der Erfindung können dadurch gekennzeichnet sein, daß einer der Innenleiter mit einem, insbesondere pinartigen, Vorsprung in Wirkverbindung steht, während der damit zusammensteckbare andere Innenleiter eine an besagten Vorsprung angepaßte Ausnehmung aufweist, wobei vorzugsweise sowohl der Vorsprung eine λ/4-Struktur als auch die Ausnehmung eine λ/4-Struktur darstellen.Embodiments of the invention may be characterized in that one of the inner conductors is in operative connection with a, in particular pin-like, projection, while the other inner conductor which can be plugged together has a recess adapted to said projection, wherein preferably both the projection have a λ / 4 structure and the recess represent a λ / 4 structure.

Dabei kann vorgesehen sein, daß der Vorsprung Bestandteil eines Kontaktierungsmittels ist, das form- und/oder kraftschlüssig mit dem dazugehörigen Innenleiter verbunden ist.It can be provided that the projection is part of a contacting, which is positively and / or non-positively connected to the associated inner conductor.

Mit der Erfindung wird dabei vorgeschlagen, daß die dielektrische Dichtung zwischen dem Kontaktierungsmittel und dem zu dem damit verbundenen Innenleiter gehörenden Außenleiter angeordnet ist, vorzugsweise unter Zwischenschaltung zumindest einer O-Ring-Dichtung.The invention proposes that the dielectric seal be arranged between the contacting means and the outer conductor associated with the associated inner conductor, preferably with the interposition of at least one O-ring seal.

Erfindungsgemäß kann auch vorgesehen sein, daß die λ/4-Strukturen der Außenleiter der Sendereinheit und der Empfängereinheit aufeinandersteckbar, insbesondere flächig aufeinander legbar, sind.According to the invention, it can also be provided that the λ / 4 structures of the outer conductors of the transmitter unit and of the receiver unit can be plugged onto one another, in particular laid flat on one another.

Mit der Erfindung wird ebenfalls ein Gargerät mit einem Garraum, einem davon über zumindest eine Garraumwand getrennten Technikraum und einer erfindungsgemäßen Mikrowellensteckverbindung geliefert, bei dem die Sendereinheit im Technikraum und Empfängereinheit im Garraum angeordnet sind.The invention likewise provides a cooking appliance with a cooking chamber, a technical space separated therefrom via at least one cooking chamber wall, and a microwave plug connection according to the invention, in which the transmitter unit is arranged in the cooking space and receiver unit in the cooking space.

Dabei kann vorgesehen sein, daß die Sendereinheit mechanisch, insbesondere lösbar, mit der Garraumwand verbunden ist.It can be provided that the transmitter unit is mechanically, in particular releasably connected to the cooking chamber wall.

Mit der Erfindung wird dabei wiederum vorgeschlagen, daß die λ/4-Struktur des Außenleiters der Sendereinheit ein Gewinde aufweist.The invention again proposes that the λ / 4 structure of the outer conductor of the transmitter unit has a thread.

Schließlich kann erfindungsgemäß auch vorgesehen sein, daß die Empfängereinheit von einem Zubehörteil des Gargeräts, vorzugsweise einem Pfosten für ein Garguttragegestell, umfaßt ist.Finally, according to the invention can also be provided that the receiver unit of an accessory of the cooking appliance, preferably a post for a Garguttragegestell is included.

Der Erfindung liegt somit die überraschende Erkenntnis zugrunde, daß eine Mikrowellensteckverbindung thermisch und mechanisch derart stabil ist, daß sie auch in einem Gargerät für Groß- und Gewerbeküchen einsetzbar ist, indem ein Dielektrikum als eine fest mit einem metallischen Substrat, das mit einer (Koaxial)Leitung verbunden ist und eine λ/4-Struktur aufweist, verbundene Beschichtung bereitgestellt ist und einer zumindest bereichsweisen galvanischen Trennung bei Verbindung der (Koaxial)Leitung mit einer weiteren (Koaxial) Leitung zur Übertragung von Mikrowellen der Wellenlänge λ dient. Auch die weitere Leitung kann mit solch einer dielektrischen Beschichtung ausgestattet sein.The invention is thus based on the surprising finding that a microwave plug connection is thermally and mechanically so stable that it can also be used in a cooking appliance for large and commercial kitchens by using a dielectric as one fixed to a metallic substrate which is connected to a (coaxial) Line is connected and has a λ / 4 structure, connected coating is provided and an at least partially galvanic isolation when connecting the (coaxial) line with another (coaxial) line for transmitting microwaves of wavelength λ is used. The further line can also be equipped with such a dielectric coating.

Besonders thermisch stabil wird die Verbindung erfindungsgemäß dadurch, daß die Beschichtung elastisch und porös auf dem Substrat aufgetragen ist. Die mechanische Stabilität der Verbindung kann zudem dadurch erhöht werden, daß die dielektrische Beschichtung aus einem keramischen Material, vorzugsweise Aluminiumoxid, besteht und vorteilhafterweise auch mit einer Mineralschmelze versiegelt ist.Particularly thermally stable, the compound according to the invention is characterized in that the coating is applied elastically and porous on the substrate. The mechanical stability of the connection can also be increased by the fact that the dielectric coating consists of a ceramic material, preferably aluminum oxide, and is advantageously also sealed with a mineral melt.

Beim Einsatz einer erfindungsgemäßen Mikrowellensteckverbindung in einem Gargerät mit einem Garraum und einem Technikraum, auch Geräteraum genannt, ist eine garraumseitige Empfängereinheit und/oder eine technikraumseitige Sendereinheit mit einer dielektrischen Beschichtung versehen. Zudem kann technikraumseitig zur Fluiddichtung ein weiteres Dielektrikum angeordnet sein, nämlich zwischen dem Innen- und Außenleiter der Sendereinheit, die den Innen- und Außenleiter der Sendereinheit galvanisch voneinander trennt.When using a microwave connector according to the invention in a cooking appliance with a cooking chamber and a technical room, also called equipment compartment, a garraumseitige receiver unit and / or a technical room side transmitter unit is provided with a dielectric coating. In addition, another dielectric may be arranged on the engineering space side relative to the fluid seal, namely between the inner and outer conductors of the transmitter unit, which galvanically separates the inner and outer conductors of the transmitter unit from one another.

Die Empfänger- und Sendereinheit sind erfindungsgemäß als Teile eines festhaltenden, lösbaren Steckers ausgebildet. Mit Hilfe eines Gewindes im Bereich der λ/4-Struktur des Außenleiters der Sendereinheit kann dieselbe fest mit einer Garraumwand verschraubt sein. Dabei muß darauf geachtet werden, daß die Dicke der dielektrischen Beschichtung passend zur λ/4-Geometrie der Verbindung ist.The receiver and transmitter unit according to the invention are designed as parts of a retaining, releasable plug. With the help of a thread in the region of the λ / 4 structure of the outer conductor of the transmitter unit, it can be screwed tightly to a cooking chamber wall. Care must be taken that the thickness of the dielectric coating is suitable for the λ / 4 geometry of the compound.

Weitere Merkmale und Vorteile der Erfindungen ergeben sich beispielhaft aus der nachfolgenden detaillierten Beschreibung einer bevorzugten Ausführungsform der Erfindung anhand schematischer Zeichnungen. Dabei zeigt:

Figur 1:
eine Längsschnittansicht einer Sendereinheit und einer Empfängereinheit einer erfindungsgemäßen Mikrowellensteckverbindung in nicht gestecktem Zustand; und
Figur 2:
eine Längsschnittansicht der Mikrowellensteckverbindung von Figur 1 in gestecktem Zustand.
Further features and advantages of the invention will become apparent from the following detailed description of a preferred embodiment of the invention with reference to schematic drawings. Showing:
FIG. 1:
a longitudinal sectional view of a transmitter unit and a receiver unit of a microwave connector according to the invention in the unplugged state; and
FIG. 2:
a longitudinal sectional view of the microwave connector of FIG. 1 in mated condition.

In Figur 1 ist eine erfindungsgemäße Mikrowellensteckverbindung 100 zum Einsatz in einem Gargerät (nicht gezeigt) mit Garraumwänden 10 zwischen einem Garraum und einem Technikraum gezeigt, und zwar mit einem garraumseitigen Stecker in Form einer Empfängereinheit 101 und einem technikraumseitigen Stecker in Form einer Sendereinheit 102.In FIG. 1 a microwave connector 100 according to the invention for use in a cooking appliance (not shown) is shown with cooking space 10 between a cooking chamber and a technical room, with a garraumseitigen plug in the form of a receiver unit 101 and a techno-room-side plug in the form of a transmitter unit 102nd

In der Sendereinheit 102 werden über eine zuführende koaxiale Mikrowellenleitung mit Außenleiter 12 und Innenleiter 13 Mikrowellen einer Wellenlänge λ von einer Mikrowellenquelle (nicht gezeigt) der Mikrowellensteckverbindung 100 zugeführt. Über ein Kontaktierungsmittel 14 werden die Mikrowellen vom zuführenden Innenleiter 13 einem Sender-Innenleiter 5 mit λ/4-Struktur zugeführt, während sich der Außenleiter 12 in einen Sender-Außenleiter mit λ/4-Struktur verlängert. Die λ/4-Strukturen der Sender-Leiter 5, 9 sind durch ein wasserdichtes Dielektrikum 7 galvanisch und räumlich voneinander getrennt, und zwar unter Zwischenschaltung einer O-Ring-Dichtung 15. Diese Sendereinheit 102 ist mit Hilfe eines Befestigungselements 11 fest mit den Garraumwänden 10 verbunden. Die λ/4-Struktur des Sender-Außenleiters 9 weist eine garraumseitige dielektrische Beschichtung 8 auf. Ebenso weist die λ/4-Struktur des Sender-Innenleiters 5 eine dielektrische Beschichtung 6 auf.In the transmitter unit 102, microwaves of a wavelength λ from a microwave source (not shown) of the microwave plug connection 100 are fed via an incoming coaxial microwave line with outer conductor 12 and inner conductor 13. Via a contacting means 14, the microwaves are supplied from the feeding inner conductor 13 to a transmitter inner conductor 5 with λ / 4 structure, while the outer conductor 12 extends into a transmitter outer conductor with λ / 4 structure. The λ / 4 structures of the transmitter conductors 5, 9 are galvanically and spatially separated from one another by a watertight dielectric 7, with the interposition of an O-ring seal 15. This transmitter unit 102 is fixed to the cooking chamber walls with the aid of a fastening element 11 10 connected. The λ / 4 structure of the transmitter outer conductor 9 has a garraumseitige dielectric coating 8. Likewise, the λ / 4 structure of the transmitter inner conductor 5 has a dielectric coating 6.

Auf die Sendereinheit 102 kann die Empfängereinheit 101 aufgesteckt werden, die ihrerseits einen fortführenden Mikrowellen-Innenleiter 1 und einen fortführenden Mikrowellen-Außenleiter 3 aufweist, die jeweils mit einer empfangenden λ/4-Struktur 3 bzw. 4 verbunden sind.On the transmitter unit 102, the receiver unit 101 can be plugged, which in turn has a continuing microwave inner conductor 1 and a continuing microwave outer conductor 3, which are each connected to a receiving λ / 4 structure 3 and 4 respectively.

In Figur 2 ist die Mikrowellensteckverbindung 100 in gestecktem Zustand gezeigt, wobei die Empfängereinheit 101 sowohl formschlüssig als auch kraftschlüssig, z. B. mit Hilfe einer Mutter, mit der Sendereinheit 102 fest verbunden sein kann. Die Geometrie der λ/4-Strukturen 2, 4, 5, 9, der dielektrischen Beschichtungen 6, 8 und des dichtenden Dielektrikums 7 sind so ausgelegt, daß die in die Sendereinheit 102 einlaufenden Mikrowellen möglichst verlustfrei in die Empfängereinheit 101 übertragen werden können. Dies ist durch die Anpassung der Geometrie der Bauteile an die Wellenlänge der Mikrowelle λ gewährleistet.In FIG. 2 the microwave connector 100 is shown in the plugged state, wherein the receiver unit 101 both positive and non-positive, z. B. with the help of a mother, with the transmitter unit 102 may be firmly connected. The geometry of the λ / 4 structures 2, 4, 5, 9, the dielectric coatings 6, 8 and the sealing dielectric 7 are designed so that the incoming into the transmitter unit 102 microwaves can be transmitted as lossless as possible in the receiver unit 101. This is ensured by the adaptation of the geometry of the components to the wavelength of the microwave λ.

Die elektrischen und magnetischen Felder der Mikrowellen durchdringen die nicht-leitenden dielektrische Schichten bzw. Beschichtungen 6, 8 und übertragen so ihre Energie von den λ/4-Strukturen 5, 9 der Sendereinheit 102 auf die λ/4-Strukturen 2, 4 der Empfängereinheit 101. Von dort wird die Mikrowellenenergie durch die fortführende koaxiale Mikrowellenleitung 1, 3 weiter ins Garrauminnere geführt. Idealerweise dient die koaxiale Empfängerleitung 1, 2 im Garraum auch als Stützstruktur einer Gargutträgerkonstruktion (nicht gezeigt), wie in der nicht-vorveröffentlichten EP 05026912.5 beschrieben. Die Mikrowellenenergie kann dann, wie in der nicht-vorveröffentlichten DE 10 2006 007 734.2 vorgeschlagen, mit einer geeigneten Antennenstruktur Gargut im Garraum zugeführt werden.The electric and magnetic fields of the microwaves penetrate the non-conductive dielectric layers or coatings 6, 8 and thus transfer their energy from the λ / 4 structures 5, 9 of the transmitter unit 102 to the λ / 4 structures 2, 4 of the receiver unit 101. From there, the microwave energy is guided by the continuing coaxial microwave line 1, 3 further into the cooking chamber interior. Ideally, the coaxial receiver line 1, 2 in the cooking chamber also serves as a support structure of a cooking support structure (not shown), as in the non-prepublished EP 05026912.5 described. The microwave energy can then, as in the non-prepublished DE 10 2006 007 734.2 proposed to be fed with a suitable antenna structure food in the oven.

Die Beschichtungen 6, 8 der λ/4-Strukturen 5, 9 der Sendereinheit 102 können mittels Gasphasenabscheidung (CVD) oder mittels der Abscheidung eines Plasmas in Form einer porösen Keramik (aus z.B. Aluminiumoxid) hergestellt werden. Eine solche Beschichtungstechnik ist beispielsweise in der US 2005/0260411 A1 beschrieben. Die so aufgetragenen dielektrischen Beschichtungen 6, 8 zeichnen sich durch eine große mechanische Härte und durch eine große chemische Beständigkeit aus, die das der metallischen Teile der Mikrowellensteckverbindung 100 aus z. B. Kupfer, Eisen, Messing oder Edelstahl bei weitem übertrifft. Durch das Aufbringen der porösen keramischen Schicht mittels CVD oder Plasma-Techniken wird eine mechanisch äußerst stabile Verbindung der dielektrischen Keramik mit dem metallischen Substrat erreicht, die auch elastische Eigenschaften aufweist. Eine solche elastische Verbindung hält selbst den mechanischen Belastungen im alltäglichen Großküchenbetrieb stand. So kann die erfindungsgemäße Mikrowellensteckverbindung sehr oft und ohne große Rücksichtnahme gesteckt und wieder auseinandergezogen werden. Zudem ist durch die keramische Beschichtung ein Betrieb des Gargerätes auch mit chemisch aggressiven Substanzen bei hohen Temperaturen möglich, ohne daß das Metall der Mikrowellensteckverbindung chemisch zersetzt wird. Durch die poröse elastische Verbindung mit dem metallischen Substrat wird des weiteren bei hohen Wärmeflüssen durch die erfindungsgemäße Mikrowellensteckverbindung, wie sie beim Einsatz in Gargeräten nicht zu vermeiden sind und bei denen sich das Substrat und die Beschichtung mit unterschiedlichen Geschwindigkeiten aufheizen bzw. abkühlen, ein Teil der mechanischen Kräfte, die durch unterschiedliche Wärmeausdehnungskoeffizienten der beiden Materialen verursacht werden, aufgenommen. Die Beschichtungen werden somit auch bei starken thermischen Belastungen nicht von dem metallischen Substrat abplatzen.The coatings 6, 8 of the λ / 4 structures 5, 9 of the transmitter unit 102 can be produced by means of chemical vapor deposition (CVD) or by means of the deposition of a plasma in the form of a porous ceramic (for example aluminum oxide). Such a coating technique is for example in the US 2005/0260411 A1 described. The thus applied dielectric coatings 6, 8 are characterized by a high mechanical hardness and by a high chemical resistance, which corresponds to that of the metallic parts of the microwave connector 100 of z. As copper, iron, brass or stainless steel far exceeds. The application of the porous ceramic layer by means of CVD or plasma techniques achieves a mechanically extremely stable connection of the dielectric ceramic to the metallic substrate, which also has elastic properties. Such elastic connection withstands even the mechanical stresses in the everyday large kitchen operation. Thus, the microwave connector according to the invention can be inserted very often and without much care and pulled apart again. In addition, an operation of the cooking appliance with chemically aggressive substances at high temperatures is possible by the ceramic coating, without the metal of the microwave connector is chemically decomposed. Due to the porous elastic connection with the metallic substrate is further at high heat fluxes by the microwave connector according to the invention, as they are unavoidable when used in cooking appliances and in which heat and cool the substrate and the coating at different speeds or part of the mechanical forces caused by different thermal expansion coefficients of the two materials added. The coatings will thus not flake off the metallic substrate even at high thermal loads.

In einer weiteren Ausführungsform gemäß der Erfindung können die Beschichtungen mit einer mineralischen Schmelze überzogen sein, die die Hohlräume der porösen Keramik ausfüllt und so einer zusätzlichen Stabilisierung der dielektrischen Schicht dient, ohne daß dabei die dielektrischen Eigenschaften gestört werden.In a further embodiment according to the invention, the coatings may be coated with a mineral melt which fills the cavities of the porous ceramic and thus an additional stabilization of the dielectric layer is used without disturbing the dielectric properties.

Bei einer weiteren möglichen Ausführungsform der Erfindung sind sowohl die λ/4-Strukturen 5, 9 der Sendereinheit 102, als auch die λ/4-Strukturen 2, 4 der Empfängereinheit 101 mit einer dielektrischen Beschichtung versehen. Alternativ können auch nur die λ/4-Strukturen der Empfängereinheit 101 beschichtet sein. In jedem Fall ist darauf zu achten, daß durch die Beschichtungen keine zu großen Abweichungen von der optimalen λ/4-Geometrie der erfindungsgemäßen Mikrowellensteckverbindung 100 entstehen.In a further possible embodiment of the invention, both the λ / 4 structures 5, 9 of the transmitter unit 102, and the λ / 4 structures 2, 4 of the receiver unit 101 are provided with a dielectric coating. Alternatively, only the λ / 4 structures of the receiver unit 101 may be coated. In any case, care must be taken that the coatings do not give rise to excessive deviations from the optimum λ / 4 geometry of the microwave connector 100 according to the invention.

Die in der vorstehenden Beschreibung, in den Ansprüchen sowie in den Zeichnungen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in jeder beliebigen Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.The features of the invention disclosed in the foregoing description, in the claims and in the drawings may be essential both individually and in any combination for the realization of the invention in its various embodiments.

Claims (20)

  1. Cooking device comprising a cooking chamber, an equipment chamber which is separated from said cooking chamber by means of at least one cooking chamber wall (10), and a microwave plug connection (100), characterized in that the microwave plug connection comprises a transmitter unit (102) and a receiver unit (101), with
    the transmitter unit (102) being connected to a microwave source for supplying microwaves with the wavelength λ, being arranged in the equipment chamber and having at least one metallic conductor (12, 13) in conjunction with a metallic λ/4 structure (5, 9),
    the receiver unit (101) for transmitting the microwaves being connected to the transmitter unit (102), being arranged in the cooking chamber, and comprising at least one metallic conductor (1, 3) in conjunction with a metallic λ/4 structure (2, 4), it being possible for the two λ/4 structures (2, 4, 5, 9) to be plugged one onto the other or plugged together in a releasable manner, and at least one dielectric (6, 8) being arranged, at least in regions, between the transmitter unit (102) and the receiver unit (101),
    the said dielectric being provided in the regions in which the λ/4 structures (2, 4, 5, 9) are plugged one onto the other or plugged together as a dielectric coating (6, 8) of at least part of at least one of the λ/4 structures (5, 9), with the coating functioning as a metallic substrate.
  2. Cooking device according to Claim 1, characterized in that
    the dielectric coating (6, 8) is connected to the metallic substrate in an elastic manner.
  3. Cooking device according to Claim 1 or 2,
    characterized in that
    the dielectric coating (6, 8) is porous.
  4. Cooking device according to one of the preceding claims, characterized in that
    the dielectric coating (6, 8) is sealed, at least in regions, with a mineral melt for stabilization purposes.
  5. Cooking device according to one of the preceding claims, characterized in that
    the dielectric coating (6, 8) is composed of a ceramic material.
  6. Cooking device according to one of the preceding claims, characterized in that
    the dielectric coating (6, 8) comprises aluminium oxide.
  7. Cooking device according to one of the preceding claims, characterized in that
    the dielectric coating (6, 8) substantially completely fills the space between the λ/4 structures (5, 9).
  8. Cooking device according to one of the preceding claims, characterized in that
    the dielectric coating (6, 8) serves to influence the electric field between the λ/4 structures (2, 4, 5, 9).
  9. Cooking device according to one of the preceding claims, characterized in that
    the transmitter unit (102) comprises a coaxial line with an inner conductor (13) and an outer conductor (12), with the inner conductor (13) and the outer conductor (12) in each case being designed as metallic conductors in conjunction with a λ/4 structure (5, 9),
    the receiver unit (101) comprises a coaxial line with an inner conductor (1) and an outer conductor (3), with the inner conductor (1) and the outer conductor (3) in each case being designed as metallic conductors in conjunction with a λ/4 structure (2, 4),
    the λ/4 structures (2, 5) of the inner conductors (1, 13) and/or the λ/4 structures (4, 9) of the outer conductors (9, 12) can be plugged one onto the other or plugged together, and
    at least one of the λ/4 structures (5) of the inner conductors (1, 13) is provided, at least in regions, with a dielectric coating (6), with the λ/4 structure (5) of the inner conductor (13) of the transmitter unit (102) preferably being provided, at least in regions, with a dielectric coating (6).
  10. Cooking device according to Claim 9, characterized in that
    the outer conductors (3, 12) of the transmitter unit (102) and of the receiver unit (101) are electrically connected to one another, or the λ/4 structure (9) of the outer conductor (12) of the transmitter unit (102) is provided, at least in regions, with a dielectric coating (8).
  11. Cooking device according to Claim 9 or 10,
    characterized it that
    each inner conductor (1, 13) and/or each outer conductor (3, 12) and/or each λ/4 structure (2, 4, 5, 9) comprises stainless steel and/or copper and/or brass.
  12. Cooking device according to one of Claims 9 to 11,
    characterized in that
    at least one dielectric seal (7) in the transmitter unit (102) and/or the receiving unit (101) electrically isolates the respective inner conductor (13) from the respective outer conductor (12), at least in the region of the respective λ/4 structures (5, 9).
  13. Cooking device according to Claim 12,
    characterized in that
    the dielectric seal (7) closes off the coaxial line of the transmitter unit (102) in a water-tight manner at least at its end which is averted from the microwave source, preferably with the interconnection of at least one O-ring seal (15).
  14. Cooking device according to one of Claims 9 to 13,
    characterized in that
    one of the inner conductors (13) is operatively connected to an, in particular pin-like, projection (5), whereas the other inner conductor (1) which can be plugged together with the said inner conductor (13) has a recess which is matched to the said projection (5), with preferably both the projection representing a λ/4 structure (5) and the recess representing a λ/4 structure (2).
  15. Cooking device according to Claim 14,
    characterized in that
    the projection (5) is a constituent part of a contact-making means (14) which is connected to the associated inner conductor (13) in an interlocking and/or force-fitting manner.
  16. Cooking device according to Claim 15,
    characterized in that
    the dielectric seal (7) is arranged between the contact-making means (14) and the outer conductor (12) which belongs to the inner conductor (13) which is connected to the said contact-making means, preferably with the interconnection of at least one O-ring seal (15) .
  17. Cooking device according to one of Claims 9 to 16,
    characterized in that
    the λ/4 structures (4, 9) of the outer conductors (3, 12) of the transmitter unit (102) and of the receiver unit (101) can be plugged one onto the other, in particular can be laid flat one on the other.
  18. Cooking device according to one of the preceding claims, characterized in that
    the transmitter unit (102) is mechanically connected to the cooking chamber wall (10), in particular in a releasable manner.
  19. Cooking device according to Claim 18,
    characterized in that
    the λ/4 structure (9) of the outer conductor (12) of the transmitter unit (102) has a thread.
  20. Cooking device according to one of the preceding claims, characterized in that
    the receiver unit (101) is surrounded by an accessory of the cooking device, preferably a post for a carrying frame for a product being cooked.
EP06290732A 2006-05-03 2006-05-03 Cooking apparatus containing a coated microwave connection Not-in-force EP1852934B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502006000804T DE502006000804D1 (en) 2006-05-03 2006-05-03 Cooking device with a coated microwave plug connection
EP06290732A EP1852934B1 (en) 2006-05-03 2006-05-03 Cooking apparatus containing a coated microwave connection
JP2007121764A JP2007299757A (en) 2006-05-03 2007-05-02 Coated microwave plug connector and cooking apparatus using this microwave plug connector
US11/743,551 US20070259537A1 (en) 2006-05-03 2007-05-02 Coated microwave plug connector and cooking appliance with such a microwave plug connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06290732A EP1852934B1 (en) 2006-05-03 2006-05-03 Cooking apparatus containing a coated microwave connection

Publications (2)

Publication Number Publication Date
EP1852934A1 EP1852934A1 (en) 2007-11-07
EP1852934B1 true EP1852934B1 (en) 2008-05-21

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Application Number Title Priority Date Filing Date
EP06290732A Not-in-force EP1852934B1 (en) 2006-05-03 2006-05-03 Cooking apparatus containing a coated microwave connection

Country Status (4)

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US (1) US20070259537A1 (en)
EP (1) EP1852934B1 (en)
JP (1) JP2007299757A (en)
DE (1) DE502006000804D1 (en)

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DE102010060426A1 (en) * 2010-11-08 2012-05-10 Roth & Rau Muegge Gmbh coaxial conductor
CN103378390B (en) * 2012-04-20 2018-04-10 恩智浦美国有限公司 The oscilator system of microwave adapter and correlation
US8926360B2 (en) 2013-01-17 2015-01-06 Cooper Technologies Company Active cooling of electrical connectors
US9093764B2 (en) 2013-01-17 2015-07-28 Cooper Technologies Company Electrical connectors with force increase features

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US20030012985A1 (en) * 1998-08-03 2003-01-16 Mcalister Roy E. Pressure energy conversion systems
US5977841A (en) * 1996-12-20 1999-11-02 Raytheon Company Noncontact RF connector
JP2002353702A (en) * 2001-05-30 2002-12-06 Mitsubishi Electric Corp High frequency rotation relay circuit
US6778044B2 (en) * 2002-01-23 2004-08-17 Vega Grieshaber Kg Coaxial line plug-in connection with integrated galvanic separation
US7384693B2 (en) * 2004-04-28 2008-06-10 Intel Corporation Diamond-like carbon films with low dielectric constant and high mechanical strength
CA2564946A1 (en) * 2004-05-13 2005-11-24 Waverx, Inc. Apparatus and method for the treatment of infectious disease in keratinized tissue
US20060157482A1 (en) * 2004-12-13 2006-07-20 Markus Lingenheil Cooking appliance with a microwave generator device

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DE502006000804D1 (en) 2008-07-03
EP1852934A1 (en) 2007-11-07
US20070259537A1 (en) 2007-11-08
JP2007299757A (en) 2007-11-15

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