EP3429313B1 - Microwave oven with opposing beams outlets - Google Patents

Microwave oven with opposing beams outlets Download PDF

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Publication number
EP3429313B1
EP3429313B1 EP18182682.7A EP18182682A EP3429313B1 EP 3429313 B1 EP3429313 B1 EP 3429313B1 EP 18182682 A EP18182682 A EP 18182682A EP 3429313 B1 EP3429313 B1 EP 3429313B1
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EP
European Patent Office
Prior art keywords
microwave oven
container
closure component
microwave
magnetron
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EP18182682.7A
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German (de)
French (fr)
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EP3429313A1 (en
Inventor
Mario Alessi
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Ortner Consulting & Trading GmbH
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Ortner Consulting & Trading GmbH
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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
    • H05B6/80—Apparatus for specific applications
    • 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
    • H05B6/6402—Aspects relating to the microwave cavity
    • 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
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus
    • 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
    • H05B6/707—Feed lines using waveguides
    • 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
    • H05B6/74—Mode transformers or mode stirrers
    • 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
    • H05B6/80—Apparatus for specific applications
    • H05B6/808—Microwave heating adapted for vending machines
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • H05B2206/044—Microwave heating devices provided with two or more magnetrons or microwave sources of other kind

Definitions

  • the present invention relates to a microwave oven with an inner wall enclosing a cooking space in a microwave-tight manner, which is formed from a plurality of stationary wall sections and a movable closure element, the closure element of the microwave oven forming the bottom or the lid of the microwave oven, and with at least one magnetron for generating microwave radiation, which is aligned with the cooking space by means of at least one radiation channel, a first radiation channel running in stationary wall sections and forming at its end a first radiation outlet opposite the movable closure element.
  • Such a microwave oven is already out of the US 2,956,144 A previously known.
  • This document discloses an early microwave oven, which provides a radiation protection cover and a beam path permanently installed underneath it, which ends under a radiation-permeable shelf for a food to be heated.
  • the radiation protection cover is articulated on the footprint or is suspended and lowered over it.
  • microwave oven is from, for example DE 10 2009 040 669 A1 known.
  • the microwave oven described there is assigned two magnetrons which generate microwave radiation and this microwave radiation Guide into a cooking space via radiation channels.
  • the cooking space has lateral openings in its microwave-proof jacket through which the radiation can penetrate into the cooking space.
  • Such microwave ovens are used, for example, in vending machines that offer heated food for sale.
  • the essential properties of these vending machines are on the one hand a diverse range and on the other hand a quick delivery of the goods to the waiting customer. From the provider's point of view, such an automat should also be able to be set up in a space-saving manner.
  • the closure element as in the WO 2014/154208 A1 forms the bottom of the microwave oven and attach the radiation outlets of the magnetrons to the side. Due to the usual shape of the portion container, the one from the DE 10 2009 040 669 A1 known type of energy coupling but not optimal.
  • the portion containers like the usual plates, are flat and have a low overall height. Therefore, the energy coming from the magnetrons and coupled into the cooking space via the radiation outlets hits the smaller outer surfaces of the product containers. It would be more advantageous to couple the energy in via the large cover and base areas.
  • the closure element to which a magnetron cannot easily be attached, since otherwise the removal arm would become too bulky to move it through the vending machine, moreover at an appropriate speed.
  • the present invention is based on the object of improving the coupling of energy into a product container standing around the cooking space of a microwave oven when the closure element of the microwave oven forms the base or the lid of the microwave oven.
  • a microwave oven has a cooking space which is enclosed by a microwave-tight inner wall.
  • This essentially consists of stationary, i.e. immovable wall sections.
  • an access opening is formed by a movable closure element.
  • at least one magnetron is provided, which generates microwave radiation and emits it into a radiation channel which opens into the cooking chamber of the microwave oven.
  • the microwave radiation is guided in two separate radiation channels and a first radiation outlet is located opposite the movable closure element, that is to say on the access opening of the microwave oven.
  • a second radiation outlet is assigned to the closure element itself and is therefore opposite the first radiation outlet when the microwave oven is closed.
  • the first radiation channel is guided completely in the fixed wall sections of the microwave oven, while the second radiation channel starts in the fixed wall sections, but continues after a microwave-tight transition in the closure element itself and forms a radiation outlet there.
  • a single magnetron can be provided, which either feeds a common beam channel or directly feeds two separate beam channels. If there is a common radiation channel, this will bifurcate in its course into a first and a second radiation channel, so that the two radiation channels continue as separate radiation channels up to their respective radiation outlets.
  • the third and preferred solution is to use two magnetrons, each of which feeds only one of the two beam channels. This then also makes it possible to arrange the magnetrons in the housing of the microwave oven on different sides of the cooking space, so that the space can be optimally used and the overall arrangement is as compact as possible. This is particularly the case when the magnetrons are arranged on adjacent circumferential walls, so that one is spread out in width and one in depth.
  • the closure element on its side facing the cooking space in the closed state can be assigned a container into which a portion container is conveyed from the product store and with which the portion container is inserted the cooking space of the microwave oven is placed.
  • the container can preferably be made of a microwave-permeable material in order not to impair the heating of the portion container and have a continuous wall, have openings or be designed as a basket, for example.
  • the container is open at least on one side, via which the portion container is fed into the container.
  • An opening can also be provided on the opposite side in order to convey the container to a product outlet via this side.
  • the opposite side can also be provided with a flap via an opening mechanism, which can be opened either by motor or by a spring arrangement by applying force.
  • a turntable can be assigned to this on its container wall opposite the closure element, so that in the closed state and when the energy supply is switched on, the portion container rotates slowly in the cooking space and the energy coupling is made as uniform as possible.
  • the rotation can be caused on the one hand by a motor directly assigned to the container, but preferably part of the turntable passes through the container wall and forms at least one driver element on the side facing away from the container interior, which engages in a force transmission means of a drive in the closed state.
  • the drive can then be installed in the fixed wall sections that are closest to the container in the closed state.
  • the closure element which is designed as the base or lid of the microwave oven, can be placed in different ways on the access opening of the microwave oven. First of all, it is possible to move the closure element between an open and a closed position by means of an elevator by means of a purely linear lifting movement. In addition, the closure element can also be pivoted by means of a swivel joint in order to enable and simplify the inclusion of a portion container in the container from different directions. Alternatively, the closure element can also be hinged to one of the stationary wall sections and thus form a conventional door leaf.
  • FIG 1 shows a microwave oven 1, as used in a vending machine.
  • the microwave oven 1 encloses a cooking space 3, which can be closed with a closure element 6 to form a microwave-tight space.
  • the closure element 6 is suspended on a carriage 16 which can be moved back and forth on a traverse.
  • the traverse forms an elevator 15 which can lift the closure element 6 upwards from a closed position in contact with the microwave oven 1.
  • the closure element therefore forms a lid of the microwave oven 1.
  • a force transmission means 14 which can execute a rotary movement.
  • FIG. 2 shows the same situation in a side plan view, in which the interior of the cooking space 3 is now covered.
  • the closure element 6 is assigned a container 12 on its side facing the cooking chamber 3, into which a portion container 2 can be introduced from the left-hand side in the image through a receiving funnel indicated there.
  • the portion container 2 can be introduced into the container 12, for example by falling or sliding, for which purpose it can be inclined via a swivel joint 17 when the closure element 6 is lifted out of the closed position by means of the elevator 15.
  • a turntable 13 extends through the container bottom and forms driver elements on the outside, which can interact with the force transmission means 14 for force transmission. This allows the turntable 13 in the container 12 can be rotated with a portion container 2 accommodated therein without a motor having to be attached directly to the closure element 6 or its container 12.
  • FIG. 3 now shows a cross section through in the Figures 1 and 2nd shown situation.
  • the closure element 6 is shown in the open position, with a portion container 2 already inserted into the interior of the container 12.
  • the cooking space 3 of the microwave oven 1 is formed from a plurality of stationary wall sections 5, which together form an inner wall 4 of the Form the cooking space 3, which is only open at the top.
  • a second radiation channel 9 also runs in the fixed wall sections 5 and meets a transition 11 at the border to the cooking space 3, which is microwave-tightly brought into engagement with a second part of the second radiation channel 9 arranged on the closure element 6 as soon as that Shutter element 6 has been brought into its closed position with respect to the microwave oven.
  • Figure 5 now shows the situation in cross section, in which the container 12 now more or less fills the entire cooking space 3, so that the portion container 2 is arranged centrally in the cooking space 3.
  • the first radiation outlet 8 of the first radiation channel 7 is located directly below the portion container 2
  • the second radiation outlet 10 of the second radiation channel 9 is located directly above the portion container 2.
  • This now begins at a second magnetron which is not shown in the image, initially runs through the fixed wall sections 5 of the microwave oven 1 and continues after a microwave-tight transition 11 in the closure element 6, where it forms the said second radiation outlet 10.
  • the portion container 2 can be irradiated on its main surfaces while it lies flat on the bottom of the cooking space 3.
  • the energy coupling is greatest in this way and the heating is therefore the most effective.
  • Figure 6 finally illustrates the different courses of the radiation channels 7 and 9. Because they are brought in from different directions, the magnetrons can be distributed around the microwave oven 1, so that they can be accommodated as space-saving as possible.
  • a microwave oven is thus described above which, on the one hand, works very effectively by coupling the energy from above and below into the portion container accommodated therein, but on the other hand also enables the closure element to be advantageously designed as a lid or bottom. Because part of a radiation channel is guided in the closure element, uniform heating and charging of the microwave oven from above or from below can be achieved in the same way.

Description

Die vorliegende Erfindung betrifft einen Mikrowellenofen mit einer einen Garraum mikrowellendicht umschließenden Innenwandung, welche aus mehreren ortsfesten Wandabschnitten und einem beweglichen Verschlusselement gebildet ist, wobei das Verschlusselement des Mikrowellenofens den Boden oder den Deckel des Mikrowellenofens bildet, sowie mit wenigstens einem Magnetron zur Erzeugung von Mikrowellenstrahlung, welche mittels wenigstens eines Strahlenkanals auf den Garraum ausgerichtet ist, wobei ein erster Strahlenkanal in ortsfesten Wandabschnitten verläuft und an seinem Ende einen dem beweglichen Verschlusselement gegenüberliegenden ersten Strahlenauslass bildet.The present invention relates to a microwave oven with an inner wall enclosing a cooking space in a microwave-tight manner, which is formed from a plurality of stationary wall sections and a movable closure element, the closure element of the microwave oven forming the bottom or the lid of the microwave oven, and with at least one magnetron for generating microwave radiation, which is aligned with the cooking space by means of at least one radiation channel, a first radiation channel running in stationary wall sections and forming at its end a first radiation outlet opposite the movable closure element.

Ein solcher Mikrowellenofen ist bereits aus der US 2,956,144 A vorbekannt. Diese Schrift offenbart einen frühen Mikrowellenofen, welcher aus einem Strahlenschutzdeckel und einem darunter fest installierten Strahlengang vorsieht, welcher unter einer strahlendurchlässigen Stellfläche für eine zu erwärmende Speise endet. Der Strahlenschutzdeckel ist hierbei alternativ an der Stellfläche angelenkt oder über dieser hängend und absenkbar befestigt.Such a microwave oven is already out of the US 2,956,144 A previously known. This document discloses an early microwave oven, which provides a radiation protection cover and a beam path permanently installed underneath it, which ends under a radiation-permeable shelf for a food to be heated. As an alternative, the radiation protection cover is articulated on the footprint or is suspended and lowered over it.

Ein weiterer Mikrowellenofen ist beispielsweise aus der DE 10 2009 040 669 A1 bekannt. Dem dort beschriebenen Mikrowellenofen sind zwei Magnetrons zugeordnet, welche Mikrowellenstrahlung erzeugen und diese Mikrowellenstrahlung über Strahlenkanäle in einen Garraum leiten. Der Garraum weist hierfür seitliche Öffnungen in seinem mikrowellendichten Mantel auf, durch welche die Strahlung in den Garraum eindringen kann.Another microwave oven is from, for example DE 10 2009 040 669 A1 known. The microwave oven described there is assigned two magnetrons which generate microwave radiation and this microwave radiation Guide into a cooking space via radiation channels. For this purpose, the cooking space has lateral openings in its microwave-proof jacket through which the radiation can penetrate into the cooking space.

Derartige Mikrowellenöfen werden beispielsweise in Verkaufsautomaten eingesetzt, die erwärmte Speisen zum Verkauf anbieten. Die wesentlichen Eigenschaften dieser Verkaufsautomaten sind einerseits ein vielfältiges Angebot und andererseits eine schnelle Ausgabe der Ware an den wartenden Kunden. Aus Sicht des Anbieters soll zudem ein solcher Automat möglichst raumsparend aufgestellt werden können.Such microwave ovens are used, for example, in vending machines that offer heated food for sale. The essential properties of these vending machines are on the one hand a diverse range and on the other hand a quick delivery of the goods to the waiting customer. From the provider's point of view, such an automat should also be able to be set up in a space-saving manner.

Diese drei Erfordernisse sind schwierig übereinzubringen, da bei einem großen Produktsortiment innerhalb eines Verkaufsautomaten eine große logistische Herausforderung darin besteht, die Ware schnell aus dem Produktlager in den Mikrowellenofen und von dort zum Kunden zu bringen. Bei einer Frontalbeladung wie in der genannten Schrift gezeigt, dauert dies aufgrund der erforderlichen translatorischen Bewegung am längsten und ist mithin auch sehr raumgreifend.These three requirements are difficult to match, because with a large product range within a vending machine, a major logistical challenge is to quickly get the goods from the product warehouse into the microwave oven and from there to the customer. With a frontal loading as shown in the cited document, this takes the longest due to the required translational movement and is therefore also very space-consuming.

Aus der WO 2014/ 154 208 A1 ist eine Weiterentwicklung eines solchen Verkaufsautomaten zu entnehmen, bei der das Produkt über einen Entnahmearm aus einem Produktlager entnommen wird. Der Entnahmearm fährt bis unter einen Mikrowellenofen abwärts, der Mikrowellenofen fährt über den Entnahmearm und der vorderste Teil des Entnahmearms bildet ein Verschlusselement des Mikrowellenofens, welches das Produkt in den Garraum verbringt und dort einschließt.From the WO 2014/154 208 A1 is a further development of such a vending machine, in which the product is removed from a product warehouse via a removal arm. The removal arm travels down to below a microwave oven, the microwave oven moves over the removal arm and the foremost part of the removal arm forms a closure element of the microwave oven which brings the product into the cooking space and encloses it there.

Diese beiden Erfindungen lassen sich auch durchaus kombinieren, wenn das Verschlusselement wie in der WO 2014/154208 A1 den Boden des Mikrowellenofens bildet und die Strahlenauslässe der Magnetrons seitlich ansetzen. Aufgrund der üblichen Form der Portionsbehälter ist die aus der DE 10 2009 040 669 A1 bekannte Art der Energieeinkopplung aber nicht optimal. Die Portionsbehälter, ebenso wie übliche Teller, sind flach und haben eine geringe Bauhöhe. Daher trifft die von den Magnetrons stammende und über die Strahlenauslässe in den Garraum eingekoppelte Energie auf die kleineren Außenflächen der Produktbehälter. Vorteilhafter wäre es, die Energie über die großen Deckel- und Bodenflächen einzukoppeln. Eine dieser Flächen stellt in der WO 2014/154208 jedoch das Verschlusselement dar, an dem ein Magnetron nicht ohne Weiteres befestigt werden kann, da ansonsten der Entnahmearm zu sperrig werden würde um ihn, zudem in angemessener Geschwindigkeit, durch den Verkaufsautomaten zu bewegen.These two inventions can also be combined if the closure element as in the WO 2014/154208 A1 forms the bottom of the microwave oven and attach the radiation outlets of the magnetrons to the side. Due to the usual shape of the portion container, the one from the DE 10 2009 040 669 A1 known type of energy coupling but not optimal. The portion containers, like the usual plates, are flat and have a low overall height. Therefore, the energy coming from the magnetrons and coupled into the cooking space via the radiation outlets hits the smaller outer surfaces of the product containers. It would be more advantageous to couple the energy in via the large cover and base areas. One of these areas in the WO 2014/154208 however, the closure element to which a magnetron cannot easily be attached, since otherwise the removal arm would become too bulky to move it through the vending machine, moreover at an appropriate speed.

Vor diesem Hintergrund liegt der vorliegenden Erfindung die Aufgabe zu Grunde, die Energieeinkopplung in einen um Garraum eines Mikrowellenofens stehenden Produktbehälter zu verbessern, wenn das Verschlusselement des Mikrowellenofens den Boden oder den Deckel des Mikrowellenofens bildet.Against this background, the present invention is based on the object of improving the coupling of energy into a product container standing around the cooking space of a microwave oven when the closure element of the microwave oven forms the base or the lid of the microwave oven.

Gelöst wird diese Aufgabe durch einen Mikrowellenofen gemäß den Merkmalen des Anspruchs 1. Weitere sinnvolle Ausgestaltungen eines solchen Mikrowellenofens können den sich anschließenden Unteransprüchen entnommen werden.This object is achieved by a microwave oven according to the features of claim 1. Further useful refinements of such a microwave oven can be found in the subsequent subclaims.

Erfindungsgemäß ist vorgesehen, dass ein Mikrowellenofen einen Garraum aufweist, der von einer mikrowellendichten Innenwandung umschlossen ist. Diese besteht im Wesentlichen aus ortsfesten, also unbeweglichen Wandabschnitten. Eine Zugangsöffnung wird hingegen durch ein bewegliches Verschlusselement gebildet. Wie im Stand der Technik ist wenigstens ein Magnetron vorgesehen, welches Mikrowellenstrahlung erzeugt und diese in einen Strahlenkanal abstrahlt, der in den Garraum des Mikrowellenofens mündet. Hierbei ist jedoch konkret vorgesehen, dass die Mikrowellenstrahlung in zwei separaten Strahlenkanälen geführt wird und hierbei ein erster Strahlenauslass sich gegenüber dem beweglichen Verschlusselement befindet, also auf die Zugangsöffnung des Mikrowellenofens gerichtet ist. Ein zweiter Strahlenauslass ist dem Verschlusselement selbst zugeordnet und liegt daher im geschlossenen Zustand des Mikrowellenofens dem ersten Strahlenauslass gegenüber.According to the invention, it is provided that a microwave oven has a cooking space which is enclosed by a microwave-tight inner wall. This essentially consists of stationary, i.e. immovable wall sections. In contrast, an access opening is formed by a movable closure element. As in the prior art, at least one magnetron is provided, which generates microwave radiation and emits it into a radiation channel which opens into the cooking chamber of the microwave oven. However, it is specifically provided here that the microwave radiation is guided in two separate radiation channels and a first radiation outlet is located opposite the movable closure element, that is to say on the access opening of the microwave oven. A second radiation outlet is assigned to the closure element itself and is therefore opposite the first radiation outlet when the microwave oven is closed.

Dies wird dadurch erreicht, dass der erste Strahlenkanal vollständig in den ortsfesten Wandabschnitten des Mikrowellenofens geführt ist, während der zweite Strahlenkanal zwar in den ortsfesten Wandabschnitten beginnt, sich aber nach einem mikrowellendichten Übergang in dem Verschlusselement selbst fortsetzt und dort einen Strahlenauslass bildet.This is achieved in that the first radiation channel is guided completely in the fixed wall sections of the microwave oven, while the second radiation channel starts in the fixed wall sections, but continues after a microwave-tight transition in the closure element itself and forms a radiation outlet there.

Auf diese Weise ist es möglich, eine Beaufschlagung des Garraums von oben und unten auch dann zu bewerkstelligen, wenn Boden und/oder Decke von einem lösbaren Verschlusselement gebildet werden.In this way, it is possible to act on the cooking space from above and below even if the floor and / or ceiling are formed by a releasable closure element.

Damit sind verschiedene Konfigurationen der Magnetrons realisierbar. Zunächst einmal kann ein einziges Magnetron vorgesehen sein, welches entweder einen gemeinsamen Strahlenkanal oder direkt zwei separate Strahlenkanäle beschickt. Sofern es sich um einen gemeinsamen Strahlenkanal handelt, so wird sich dieser in seinem Verlauf in einen ersten und einen zweiten Strahlenkanal aufgabeln, so dass sich die beiden Strahlenkanäle als separate Strahlenkanäle bis zu ihren jeweiligen Strahlenauslässen fortsetzen.Various configurations of the magnetrons can thus be implemented. First of all, a single magnetron can be provided, which either feeds a common beam channel or directly feeds two separate beam channels. If there is a common radiation channel, this will bifurcate in its course into a first and a second radiation channel, so that the two radiation channels continue as separate radiation channels up to their respective radiation outlets.

Die dritte und bevorzugte Lösung besteht darin, zwei Magnetrons einzusetzen, die jeweils ausschließlich einen der beiden Strahlenkanäle beschicken. Dies ermöglicht es dann auch, die Magnetrons im Gehäuse des Mikrowellenofens an unterschiedlichen Seiten des Garraums anzuordnen, so dass der Platz optimal ausgenutzt werden kann und die Gesamtanordnung möglichst kompakt wird. Dies ist insbesondere der Fall, wenn die Magnetrons an benachbarten Umfangswänden angeordnet sind, so dass eines in die Breite und eines in die Tiefe aufträgt.The third and preferred solution is to use two magnetrons, each of which feeds only one of the two beam channels. This then also makes it possible to arrange the magnetrons in the housing of the microwave oven on different sides of the cooking space, so that the space can be optimally used and the overall arrangement is as compact as possible. This is particularly the case when the magnetrons are arranged on adjacent circumferential walls, so that one is spread out in width and one in depth.

Insbesondere in dem Fall, dass es sich um einen Mikrowellenofen handelt, der in einem Verkaufsautomaten Einsatz findet, kann dem Verschlusselement an seiner dem Garraum im Verschlusszustand zugewandten Seite ein Behälter zugeordnet sein, in welchen ein Portionsbehälter aus dem Produktlager eingefördert und mit dem der Portionsbehälter in den Garraum des Mikrowellenofens verbracht wird. Der Behälter kann in diesem Zusammenhang vorzugsweise aus einem mikrowellendurchlässigen Material hergestellt sein um die Erwärmung des Portionsbehälters nicht zu beeinträchtigen und eine durchgehende Wandung besitzen, Öffnungen aufweisen oder etwa als Korb ausgeführt sein.In particular, in the case that it is a microwave oven that is used in a vending machine, the closure element on its side facing the cooking space in the closed state can be assigned a container into which a portion container is conveyed from the product store and with which the portion container is inserted the cooking space of the microwave oven is placed. In this context, the container can preferably be made of a microwave-permeable material in order not to impair the heating of the portion container and have a continuous wall, have openings or be designed as a basket, for example.

Der Behälter ist zumindest an einer Seite geöffnet, über die der Portionsbehälter in den Behälter eingefördert wird. Dabei kann eine Öffnung auch an der gegenüberliegenden Seite vorgesehen sein, um den Behälter über diese Seite an eine Produktausgabe auszufördern. Insbesondere kann die gegenüberliegende Seite auch über einen Öffnungsmechanismus mit einer Klappe versehen sein, welche entweder motorisch oder durch eine Federanordnung durch Kraftanwendung geöffnet werden kann.The container is open at least on one side, via which the portion container is fed into the container. An opening can also be provided on the opposite side in order to convey the container to a product outlet via this side. In particular, the opposite side can also be provided with a flap via an opening mechanism, which can be opened either by motor or by a spring arrangement by applying force.

In Weiterbildung eines solchen Behälters kann dieser an seiner dem Verschlusselement gegenüberliegenden Behälterwand ein Drehteller zugeordnet sein, so dass im Verschlusszustand und bei eingeschalteter Energiezufuhr der Portionsbehälter im Garraum langsam rotiert und die Energieeinkopplung möglichst vergleichmäßigt wird. Die Rotation kann einerseits durch einen dem Behälter direkt zugeordneten Motor verursacht werden, bevorzugtermaßen jedoch durchgreift ein Teil des Drehtellers die Behälterwand und bildet auf der vom Behälterinneren weg weisenden Seite wenigstens ein Mitnehmerelement aus, das im Verschlusszustand in ein Kraftübertragungsmittel eines Antriebs eingreift. Der Antrieb kann dann in den ortsfesten Wandabschnitten verbaut sein, die dem Behälter im Verschlusszustand am nächsten liegen.In a further development of such a container, a turntable can be assigned to this on its container wall opposite the closure element, so that in the closed state and when the energy supply is switched on, the portion container rotates slowly in the cooking space and the energy coupling is made as uniform as possible. The rotation can be caused on the one hand by a motor directly assigned to the container, but preferably part of the turntable passes through the container wall and forms at least one driver element on the side facing away from the container interior, which engages in a force transmission means of a drive in the closed state. The drive can then be installed in the fixed wall sections that are closest to the container in the closed state.

Das als Boden oder Deckel des Mikrowellenofens ausgestaltete Verschlusselement kann auf verschiedene Arten auf der Zugangsöffnung des Mikrowellenofens platziert werden. Zunächst ist es möglich, das Verschlusselement über einen Aufzug durch eine rein lineare Hubbewegung zwischen einer offenen und einer geschlossenen Position zu verfahren. In Ergänzung kann das Verschlusselement auch mittels eines Drehgelenks schwenkbar sein, um die Aufnahme eines Portionsbehälters in dem Behälter aus verschiedenen Richtungen zu ermöglichen und zu vereinfachen. Alternativ kann das Verschlusselement auch über ein Scharnier an einem der ortsfesten Wandabschnitte angelenkt sein und damit einen herkömmlichen Türflügel bilden.The closure element, which is designed as the base or lid of the microwave oven, can be placed in different ways on the access opening of the microwave oven. First of all, it is possible to move the closure element between an open and a closed position by means of an elevator by means of a purely linear lifting movement. In addition, the closure element can also be pivoted by means of a swivel joint in order to enable and simplify the inclusion of a portion container in the container from different directions. Alternatively, the closure element can also be hinged to one of the stationary wall sections and thus form a conventional door leaf.

Die vorstehend beschriebene Erfindung wird im Folgenden anhand eines Ausführungsbeispiels näher erläutert.The invention described above is explained in more detail below using an exemplary embodiment.

Es zeigen

Figur 1
einen Mikrowellenofen mit geöffnetem Verschlusselement und einem Aufzug zu dessen Betätigung in einer perspektivischen Darstellung von schräg oben,
Figur 2
den Mikrowellenofen gemäß Figur 1 in einer seitlichen Draufsicht,
Figur 3
den Mikrowellenofen gemäß Figur 1 in einer Querschnittsdarstellung, unter Weglassung des Aufzugs,
Figur 4
den Mikrowellenofen gemäß Figur 1 mit geschlossenem Verschlusselement und dem Aufzug zu dessen Betätigung in einer perspektivischen Darstellung von schräg oben,
Figur 5
den Mikrowellenofen gemäß Figur 4 in einer Querschnittsdarstellung, unter Weglassung des Aufzugs, sowie
Figur 6
den Mikrowellenofen gemäß Figur 4 in einer zur Darstellung der Figur 5 senkrechten, zweiten Querschnittsdarstellung.
Show it
Figure 1
a microwave oven with an open closure element and an elevator for its actuation in a perspective view obliquely from above,
Figure 2
according to the microwave oven Figure 1 in a side plan view,
Figure 3
according to the microwave oven Figure 1 in a cross-sectional representation, omitting the elevator,
Figure 4
according to the microwave oven Figure 1 with the closure element closed and the elevator for its actuation in a perspective view obliquely from above,
Figure 5
according to the microwave oven Figure 4 in a cross-sectional representation, omitting the elevator, as well
Figure 6
according to the microwave oven Figure 4 in a to represent the Figure 5 vertical, second cross-sectional view.

Figur 1 zeigt einen Mikrowellenofen 1, wie er in einem Verkaufsautomaten Verwendung findet. Der Mikrowellenofen 1 umschließt einen Garraum 3, der mit einem Verschlusselement 6 zu einem mikrowellendichten Raum verschlossen werden kann. Hierzu ist das Verschlusselement 6 an einem Schlitten 16 aufgehängt, der an einer Traverse hin und her beweglich ist. Die Traverse bildet einen Aufzug 15, der das Verschlusselement 6 aus einer Verschlussposition in Kontakt mit dem Mikrowellenofen 1 heraus nach oben abheben kann. Das Verschlusselement bildet daher einen Deckel des Mikrowellenofens 1. Am gegenüberliegenden Boden des Garraums 3 befindet sich ein Kraftübertragungsmittel 14, welches eine Drehbewegung ausführen kann. In Figur 2 wird deutlich, wozu diese Drehbewegung dient. Figure 1 shows a microwave oven 1, as used in a vending machine. The microwave oven 1 encloses a cooking space 3, which can be closed with a closure element 6 to form a microwave-tight space. For this purpose, the closure element 6 is suspended on a carriage 16 which can be moved back and forth on a traverse. The traverse forms an elevator 15 which can lift the closure element 6 upwards from a closed position in contact with the microwave oven 1. The closure element therefore forms a lid of the microwave oven 1. On the opposite bottom of the cooking space 3 there is a force transmission means 14 which can execute a rotary movement. In Figure 2 it becomes clear what this rotation is for.

Figur 2 zeigt dieselbe Situation in einer seitlichen Draufsicht, in der das Innere des Garraums 3 nun verdeckt ist. Es ist aber zu erkennen, dass dem Verschlusselement 6 auf seiner dem Garraum 3 zugewandten Seite ein Behälter 12 zugeordnet ist, in den von der im Bild linken Seite her durch einen dort angedeuteten Aufnahmetrichter ein Portionsbehälter 2 eingebracht werden kann. Der Portionsbehälter 2 kann etwa durch Fallen oder Rutschen in den Behälter 12 eingebracht werden, wozu dieser über ein Drehgelenk 17 schräg angestellt werden kann, wenn das Verschlusselement 6 mittels des Aufzugs 15 aus der Verschlussposition heraus angehoben ist. Am Boden des Behälters 12 durchgreift ein Drehteller 13 den Behälterboden und bildet auf der Außenseite Mitnehmerelemente, welche mit den Kraftübertragungsmitteln 14 zur Kraftübertragung zusammenwirken können. Hierdurch kann der Drehteller 13 in dem Behälter 12 mit einem darin aufgenommenen Portionsbehälter 2 gedreht werden, ohne dass ein Motor direkt an dem Verschlusselement 6 oder dessen Behälter 12 angebracht sein müsste. Figure 2 shows the same situation in a side plan view, in which the interior of the cooking space 3 is now covered. However, it can be seen that the closure element 6 is assigned a container 12 on its side facing the cooking chamber 3, into which a portion container 2 can be introduced from the left-hand side in the image through a receiving funnel indicated there. The portion container 2 can be introduced into the container 12, for example by falling or sliding, for which purpose it can be inclined via a swivel joint 17 when the closure element 6 is lifted out of the closed position by means of the elevator 15. At the bottom of the container 12, a turntable 13 extends through the container bottom and forms driver elements on the outside, which can interact with the force transmission means 14 for force transmission. This allows the turntable 13 in the container 12 can be rotated with a portion container 2 accommodated therein without a motor having to be attached directly to the closure element 6 or its container 12.

Figur 3 zeigt nunmehr einen Querschnitt durch die in den Figuren 1 und 2 gezeigte Situation. Abgehoben über dem Mikrowellenofen 1 ist das Verschlusselement 6 in der offenen Position dargestellt, mit einem bereits in das Innere des Behälters 12 eingeschobenen Portionsbehälter 2. Der Garraum 3 des Mikrowellenofens 1 ist aus einer Mehrzahl von ortsfesten Wandabschnitten 5 gebildet, welche gemeinsam eine Innenwandung 4 des Garraums 3 formen, die lediglich nach oben offen ist. Angrenzend zu dem Garraum 3 verläuft unterhalb desselben ein erster Strahlenkanal 7, welcher von einem Magnetron bis zu einem am Boden des Garraums 3 angeordneten Strahlenauslass 8 verläuft. Von einem zweiten Magnetron kommend verläuft zudem ein zweiter Strahlenkanal 9 in den ortsfesten Wandabschnitten 5 und trifft an der Grenze zum Garraum 3 auf einen Übergang 11, der mikrowellendicht mit einem am Verschlusselement 6 angeordneten zweiten Teil des zweiten Strahlenkanals 9 in Eingriff gebracht wird, sobald das Verschlusselement 6 in seine Verschlussposition bezüglich des Mikrowellenofens gebracht worden ist. Figure 3 now shows a cross section through in the Figures 1 and 2nd shown situation. Lifted above the microwave oven 1, the closure element 6 is shown in the open position, with a portion container 2 already inserted into the interior of the container 12. The cooking space 3 of the microwave oven 1 is formed from a plurality of stationary wall sections 5, which together form an inner wall 4 of the Form the cooking space 3, which is only open at the top. Adjacent to the cooking space 3, a first radiation channel 7 runs beneath it, which runs from a magnetron to a radiation outlet 8 arranged at the bottom of the cooking space 3. Coming from a second magnetron, a second radiation channel 9 also runs in the fixed wall sections 5 and meets a transition 11 at the border to the cooking space 3, which is microwave-tightly brought into engagement with a second part of the second radiation channel 9 arranged on the closure element 6 as soon as that Shutter element 6 has been brought into its closed position with respect to the microwave oven.

Dies ist nunmehr in Figur 4 gezeigt, wo der Aufzug 15 mit dem daran befestigten Schlitten 16, der zuvor das Verschlusselement 6 direkt über der Öffnung des Garraums 3 platziert hat, nun so weit herabgefahren ist, dass das Verschlusselement 6 die Öffnung des Garraums 3 mikrowellendicht verschließt.This is now in Figure 4 shown where the elevator 15 with the carriage 16 attached to it, which previously placed the closure element 6 directly above the opening of the cooking space 3, has now moved down so far that the closure element 6 closes the opening of the cooking space 3 in a microwave-tight manner.

Figur 5 zeigt nun die Situation im Querschnitt, in der nun der Behälter 12 mehr oder minder den ganzen Garraum 3 ausfüllt, so dass der Portionsbehälter 2 mittig im Garraum 3 angeordnet ist. Direkt unterhalb des Portionsbehälters 2 befindet sich der erste Strahlenauslass 8 des ersten Strahlenkanals 7, direkt über dem Portionsbehälter 2 befindet sich hingegen der zweite Strahlenauslass 10 des zweiten Strahlenkanals 9. Dieser beginnt nun an einem zweiten Magnetron, das im Bild nicht gezeigt ist, verläuft zunächst durch die ortsfesten Wandabschnitte 5 des Mikrowellenofens 1 und setzt sich nach einem mikrowellendichten Übergang 11 in dem Verschlusselement 6 fort, wo er den genannten zweiten Strahlenauslass 10 bildet. Durch diese Anordnung kann trotz eines beweglichen Deckels des Garraums 3 der Portionsbehälter 2 an seinen Hauptflächen bestrahlt werden, während er flach auf dem Boden des Garraums 3 aufliegt. Die Energieeinkopplung ist auf diese Weise am größten und die Erwärmung somit am effektivsten. Figure 5 now shows the situation in cross section, in which the container 12 now more or less fills the entire cooking space 3, so that the portion container 2 is arranged centrally in the cooking space 3. The first radiation outlet 8 of the first radiation channel 7 is located directly below the portion container 2, on the other hand, the second radiation outlet 10 of the second radiation channel 9 is located directly above the portion container 2. This now begins at a second magnetron, which is not shown in the image, initially runs through the fixed wall sections 5 of the microwave oven 1 and continues after a microwave-tight transition 11 in the closure element 6, where it forms the said second radiation outlet 10. With this arrangement, despite a movable lid of the cooking space 3, the portion container 2 can be irradiated on its main surfaces while it lies flat on the bottom of the cooking space 3. The energy coupling is greatest in this way and the heating is therefore the most effective.

Figur 6 verdeutlicht schließlich die unterschiedlichen Verläufe der Strahlenkanäle 7 und 9. Dadurch, dass diese aus unterschiedlichen Richtungen herangeführt werden, können die Magnetrons um den Mikrowellenofen 1 herum verteilt werden, so dass sie möglichst raumsparend untergebracht werden können. Vorstehend beschrieben ist somit ein Mikrowellenofen, der einerseits durch eine Einkopplung der Energie von oben und von unten in den darin aufgenommenen Portionsbehälter sehr effektiv arbeitet, es andererseits aber auch ermöglicht, dass das Verschlusselement vorteilhaft als Deckel oder Boden ausgeführt sein kann. Aufgrund einer Führung eines Teils eines Strahlenkanal in dem Verschlusselement können eine gleichmäßige Erwärmung und eine Beschickung des Mikrowellenofens von oben oder von unten gleichermaßen erreicht werden. Figure 6 finally illustrates the different courses of the radiation channels 7 and 9. Because they are brought in from different directions, the magnetrons can be distributed around the microwave oven 1, so that they can be accommodated as space-saving as possible. A microwave oven is thus described above which, on the one hand, works very effectively by coupling the energy from above and below into the portion container accommodated therein, but on the other hand also enables the closure element to be advantageously designed as a lid or bottom. Because part of a radiation channel is guided in the closure element, uniform heating and charging of the microwave oven from above or from below can be achieved in the same way.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
MikrowellenofenMicrowave oven
22nd
PortionsbehälterPortion container
33rd
GarraumCooking space
44th
InnenwandungInner wall
55
ortsfester Wandabschnittstationary wall section
66
VerschlusselementClosure element
77
erster Strahlenkanalfirst radiation channel
88th
erster Strahlenauslassfirst radiation outlet
99
zweiter Strahlenkanalsecond radiation channel
1010th
zweiter Strahlenauslasssecond radiation outlet
1111
Übergangcrossing
1212th
Behältercontainer
1313
DrehtellerTurntable
1414
KraftübertragungsmittelPower transmission means
1515
AufzugElevator
1616
Schlittencarriage
1717th
DrehgelenkSwivel

Claims (10)

  1. Microwave oven with an inner wall (4) which encloses a cooking chamber (3) in a microwave-tight manner and which is formed from a plurality of fixed wall sections (5) and a movable closure component (6), wherein the closure component (6) of the microwave oven (1) forms the base or the lid of the microwave oven (1), as well as with at least one magnetron for generating microwave radiation, which is aligned with the cooking chamber (3) by means of at least one beam channel (7, 9), wherein a first beam channel (7) runs in fixed wall sections (5) and forms at its end a first beam outlet (8) opposite the movable closure component (6),
    characterized in that a second beam channel (9) runs in fixed wall sections (5), has a microwave-tight, detachable transition (11) into the movable closure component (6), runs further in the movable closure component (6) and forms a second beam outlet (10) opposite the first beam outlet (8).
  2. Microwave oven according to claim 1, characterized in that a common beam channel originates from a magnetron and splits in its course into the first beam channel and the second beam channel.
  3. Microwave oven according to claim 1, characterized in that the first beam channel (7) and the second beam channel (9) originate directly from a magnetron.
  4. Microwave oven according to claim 1, characterized in that the first beam channel (7) originates from a first magnetron and the second beam channel (9) originates from a second magnetron.
  5. Microwave oven according to claim 4, characterized in that the first magnetron and the second magnetron are arranged on different, preferably adjacent sides of the cooking chamber (3).
  6. Microwave oven according to any of the preceding claims, characterized in that the closure component (6) is assigned, on its side facing the cooking chamber (3) in the closed state, a container (12) made of a microwave-permeable material and open at least on one side, for receiving a portion container (2).
  7. Microwave oven according to claim 6, characterized in that a rotary plate (13) for supporting the portioned container (2) is assigned to the container (12) on its container wall opposite the closure component (6), wherein the rotary plate (13) is rotatably mounted on the container (12) and at least one driver element passes through the container wall, wherein in a closed state an adjoining fixed wall section (5) is assigned drive means, which in a closed stated of the closure component (6) have force transmission means (14) interacting with the driver element.
  8. Microwave oven according to any of the preceding claims, characterized in that the closure component (6) forms a base or a lid of the inner wall (4), or part of it in each case.
  9. Microwave oven according to any of the preceding claims, characterized in that the closure component (6) can be lifted from the remaining inner wall (4) by means of a lift (15).
  10. Microwave oven according to any one of claims 1 to 8, characterized in that the closure component (6) is pivotally connected by means of a hinge to at least one of the fixed wall sections (5).
EP18182682.7A 2017-07-10 2018-07-10 Microwave oven with opposing beams outlets Active EP3429313B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017115363.2A DE102017115363B4 (en) 2017-07-10 2017-07-10 Microwave oven with opposite radiation outlets

Publications (2)

Publication Number Publication Date
EP3429313A1 EP3429313A1 (en) 2019-01-16
EP3429313B1 true EP3429313B1 (en) 2020-03-25

Family

ID=62909448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18182682.7A Active EP3429313B1 (en) 2017-07-10 2018-07-10 Microwave oven with opposing beams outlets

Country Status (3)

Country Link
EP (1) EP3429313B1 (en)
CN (1) CN109237551A (en)
DE (1) DE102017115363B4 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956144A (en) * 1958-12-22 1960-10-11 Westinghouse Electric Corp Electronic ovens
WO2004098241A1 (en) * 2003-04-25 2004-11-11 Matsushita Electric Industrial Co., Ltd. High-frequency heating device and method for controlling same
US7244916B2 (en) * 2004-01-14 2007-07-17 Sharp Kabushiki Kaisha Microwave heating and cooking apparatus including drawer body
DE102007023586A1 (en) * 2007-05-21 2008-11-27 Mario Alessi Microwave oven for a vending machine
DE102009040669A1 (en) 2009-09-09 2011-03-10 Mario Alessi Closure element for a microwave oven
DE102013103164A1 (en) 2013-03-27 2014-10-02 Mario Alessi Vending machine for food

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN109237551A (en) 2019-01-18
DE102017115363A1 (en) 2019-01-10
EP3429313A1 (en) 2019-01-16
DE102017115363B4 (en) 2019-01-24

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