EP3723449B1 - Device for outputting bakery products - Google Patents

Device for outputting bakery products Download PDF

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Publication number
EP3723449B1
EP3723449B1 EP20154356.8A EP20154356A EP3723449B1 EP 3723449 B1 EP3723449 B1 EP 3723449B1 EP 20154356 A EP20154356 A EP 20154356A EP 3723449 B1 EP3723449 B1 EP 3723449B1
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EP
European Patent Office
Prior art keywords
baked goods
contact pads
supply contacts
protective plate
frame
Prior art date
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Application number
EP20154356.8A
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German (de)
French (fr)
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EP3723449A1 (en
Inventor
Stefan Marko
Manfred Gruber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Umdasch Store Makers Leibnitz GmbH
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Umdasch Store Makers Leibnitz GmbH
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Publication of EP3723449A1 publication Critical patent/EP3723449A1/en
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/001—Devices for lighting, humidifying, heating, ventilation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/02—Show cases or show cabinets with dispensing arrangements
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/683—Plates having their feeding circuit closed as the kettles, pans or the like are put on
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/685—Plates having magnetic means attracting the kettles, pans, or the like
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/686—Heat-storage plates
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/02—Show cases or show cabinets with dispensing arrangements
    • A47F2003/021—Show cases or show cabinets with dispensing arrangements for dispensing bread, buns, confectionary or the like

Definitions

  • the invention relates to a device for dispensing baked goods, with a frame and a heatable baked goods carrier that is detachably fastened to it.
  • the frame has slots for the baked goods carriers.
  • the baked goods carriers can also be heated, for example, via heating plates that can be electrically supplied via plug connections.
  • the electrical plug connection In order to be able to remove the baked goods carriers from the goods dispensing device with a view to their regular cleaning, the electrical plug connection must first be released before the baked goods carriers are lifted from the frame.
  • a significant disadvantage arises from the fact that all electrical components such as connecting cables for an appealing customer presentation of the baked goods should be positioned in such a way that they are at best not visible to the customer when the baked goods carriers are inserted in the goods dispensing device, which, however, makes the electrical connections more accessible Plug connections and thus a rapid removal or insertion process of the baked goods carrier is made more difficult.
  • the cleaning process of such baked goods carriers is carried out regularly using chemical rinsing and scouring agents as cleaning media, so that the baked goods carriers should not have any corrosion-sensitive electrical contact surfaces that are directly exposed to the cleaning media during the cleaning process.
  • the invention is therefore based on the object of designing a device of the type described at the outset in such a way that, in spite of a simple removal or insertion process of the baked goods carrier, reliable electrical contacting and stable mechanical connection with high flushing media resistance at the same time is guaranteed.
  • the baked goods carrier comprises two ferromagnetic, electrical supply contacts, which each rest on non-magnetic contact surfaces of a protective plate of the frame to form an electrical connection, the contact surfaces being opposed to the protective plate by permanent magnets for releasable magnetic attachment of the supply contacts.
  • the supply contacts of the baked goods carrier according to the invention can namely, due to the permanent magnet-induced magnetic field acting through the protective plate and the contact pads, be held on the protective plate, which is fastened, for example, to mounting rails of the frame, and released again from it, while the supply contacts, when the baked goods carrier is pushed into the frame, together with the contact pads a form electrical connection.
  • This electrical connection is interrupted again when the baked goods carrier is removed from the device and thus the supply contacts and contact pads are separated.
  • the permanent magnets are arranged on the side of the protective plate opposite the contact pads, the usually relatively brittle permanent magnets do not have any direct mechanical contact forces, which reduces the risk of the magnet breaking and a long service life can be achieved.
  • a ferromagnetic supply contact forms an electrical contact pair together with a non-magnetic contact pad, whereby both the supply contacts on the side of the baked goods carrier and the contact pads on the side of the frame can be connected to a heating element or a power supply via electrical connecting lines.
  • the ferromagnetic supply contacts can be made of corrosion-resistant, ferromagnetic steel so that a high level of flushing media resistance is made possible be.
  • the supply contacts can be designed, for example, as contact plates, so that a relatively large electrical line cross-section can be provided as a result of the resulting contact surfaces.
  • the non-magnetic contact pads arranged on the protective plate can, for example, be made of non-magnetic steel and also form contact plates. It also goes without saying that a device according to the invention can also have several baked goods carriers.
  • the non-magnetic contact pads have recesses in the area of the permanent magnets.
  • the recesses can be designed in such a way that the magnetic field of the permanent magnets, which is effective in connection with the ferromagnetic supply contacts, is not weakened or shielded by the contact pads, while the contact pads form sufficiently large contact surfaces for a reliable electrical current flow.
  • the recesses can be selected so that they are directly opposite the permanent magnets with respect to the protective plate, while the contact pads surround the recesses at least in sections, so that the contact pressure resulting from the magnetic field is directly applied to the contact pads and the supply contacts can be transferred.
  • the contact pads can accordingly be designed as contact plates with a U-profile.
  • the contact pads can, however, also be configured over the entire surface, that is to say free of gaps.
  • the contact pads can also be diamagnetic in order to enable easy positioning of the baked goods carrier in relation to the protective plate. Due to the then slight magnetic repulsion of the contact pads compared to the magnetic field generated by the permanent magnets, the magnetic flux density increases in the area of the recess of the contact pads, which favors a reliable alignment of the ferromagnetic supply contacts with respect to the contact pads, so that removal or insertion processes of the baked goods carrier in the Just let the frame go through.
  • electrically conductive for example screws, nuts and washers can be provided between the supply contacts and the baked goods carrier and / or between the contact pads and the protective plate Screw connections can be provided which form electrical connection points.
  • additional electrical connection lines can be omitted, so that not only the susceptibility to errors due to corrosion, but also the final assembly can be carried out more quickly and easily.
  • screw connections with correspondingly large dimensions, for example M3 in accordance with the DIN standard, with regard to a sufficient cable cross-section.
  • the baked goods carrier comprises a heating element having a carbon-based heating layer for controlling the temperature of the baked goods, which is electrically connected to the ferromagnetic supply contacts.
  • the heating element designed for example as an electrically operated heating film, can be glued into the base of the baked goods carrier or between a warming tray base of the baked goods carrier and an additional base plate with the aid of a 2-component adhesive.
  • Electrically conductive screw connections a direct electrical connection of the supply contacts to the heating element can be made via the screw connection itself, without having to provide additional connecting lines, so that a particularly high level of corrosion resistance results.
  • Particularly favorable temperature control conditions result if a carbon paste or a carbon lacquer is provided as the active heating layer of the heating element. Because the carbon paste layer acts as a PTC resistor, which can be selected so that it blocks the flow of current at temperatures above 62 ° C, the surface temperature of the baking tray bottom side facing the baked goods can be in a temperature range between 50 Level off between ° C and 62 ° C.
  • a device for dispensing baked goods has a frame 1 and a heatable baked goods carrier 2 detachably fastened to it.
  • the baked goods carrier 2 also has two ferromagnetic, electrical supply contacts 3, which each rest on non-magnetic contact pads 4 of a protective plate 5 of the frame 1 to form an electrical connection.
  • permanent magnets 6 are located opposite the contact pads 4 for the releasable magnetic attachment of the supply contacts 3 to the contact pads 4.
  • Fastening rails 7, together with fastening strips 8, can form a fastening support for the protective plate 5.
  • the frame 1 can have latching recesses 9 into which connecting pins 10 of the fastening rails 7 can latch.
  • the supply contacts 3 are connected via an electrically conductive screw connection to a base plate 11 of the baked goods carrier 2 and to a heating element 13 glued between the base plate 11 and the base of a warming tray 12 of the baked goods carrier 2, for example a heating film with carbon lacquer as an active heating layer.
  • the contact pads 4 are also connected to the protective plate 5 via an electrically conductive screw connection.
  • the screw connections each include a screw 14, a washer 15 and a screw nut 16, the screw connections forming electrical connection points 17 for, for example, cable lugs, in particular in the area of the screw nut 16.
  • the supply contacts 3 and the contact pads 4 can be designed as contact plates.
  • the supply contacts 3 can be made of a ferromagnetic, corrosion-resistant steel of material number 1.4462 and the contact pads 4 of a non-magnetic, corrosion-resistant steel of material number V4A.
  • the resulting electrical line resistances are approximately in the range of 3 - 8 mOhm, while the total electrical resistance comprising the heating element 13, the supply contacts 3, the contact pads 4 and the screw connections is in the range of approximately 6 ohms.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Resistance Heating (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Ausgabe von Backwaren, mit einem Rahmen und einem an diesem lösbar befestigten, beheizbaren Backwarenträger.The invention relates to a device for dispensing baked goods, with a frame and a heatable baked goods carrier that is detachably fastened to it.

Aus dem Stand der Technik sind Vorrichtungen zur Ausgabe von Backwaren, mit einem Rahmen und einem an diesem lösbar befestigten, beheizbaren Backwarenträger bekannt ( DE 202015007690 U1 ). Der Rahmen weist dabei Einschübe für die Backwarenträger auf. Die Backwarenträger sind zudem beispielsweise jeweils über Heizplatten beheizbar, die über Steckverbindungen elektrisch versorgt werden können. Um demnach die Backwarenträger im Hinblick auf deren regelmäßig durchzuführende Reinigung aus der Warenausgabeeinrichtung entnehmen zu können, muss zuerst die elektrische Steckverbindung gelöst werden, bevor die Backwarenträger vom Rahmen gehoben werden. Ein erheblicher Nachteil ergibt sich allerdings durch den Umstand, dass sämtliche elektrische Bauteile wie beispielsweise Verbindungskabel für eine ansprechende Kundenpräsentation der Backwaren so positioniert werden sollten, dass diese für den Kunden bei in der Warenausgabeeinrichtung eingeschobenen Backwarenträgern bestenfalls nicht sichtbar sind, wodurch aber die Zugänglichkeit der elektrischen Steckverbindungen und somit ein rascher Entnahme- bzw. Einschubvorgang der Backwarenträger erschwert wird. Hinzu kommt, dass der Reinigungsvorgang derartiger Backwarenträger regelmäßig unter Einsatz von chemischen Spül- und Scheuermitteln als Reinigungsmedien erfolgt, sodass die Backwarenträger keine korrosionsempfindlichen elektrischen Kontaktflächen aufweisen sollten, die den Reinigungsmedien während des Reinigungsvorganges unmittelbar ausgesetzt sind.Devices for dispensing baked goods with a frame and a heatable baked goods carrier that is detachably attached to it are known from the prior art ( DE 202015007690 U1 ). The frame has slots for the baked goods carriers. The baked goods carriers can also be heated, for example, via heating plates that can be electrically supplied via plug connections. In order to be able to remove the baked goods carriers from the goods dispensing device with a view to their regular cleaning, the electrical plug connection must first be released before the baked goods carriers are lifted from the frame. A significant disadvantage, however, arises from the fact that all electrical components such as connecting cables for an appealing customer presentation of the baked goods should be positioned in such a way that they are at best not visible to the customer when the baked goods carriers are inserted in the goods dispensing device, which, however, makes the electrical connections more accessible Plug connections and thus a rapid removal or insertion process of the baked goods carrier is made more difficult. In addition, the cleaning process of such baked goods carriers is carried out regularly using chemical rinsing and scouring agents as cleaning media, so that the baked goods carriers should not have any corrosion-sensitive electrical contact surfaces that are directly exposed to the cleaning media during the cleaning process.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Vorrichtung der eingangs geschilderten Art so auszugestalten, dass trotz eines einfach vorzunehmenden Entnahme- bzw. Einschubvorganges des Backwarenträgers eine zuverlässige elektrische Kontaktierung und stabile mechanische Verbindung bei gleichzeitig hoher Spülmedienbeständigkeit gewährleistet ist.The invention is therefore based on the object of designing a device of the type described at the outset in such a way that, in spite of a simple removal or insertion process of the baked goods carrier, reliable electrical contacting and stable mechanical connection with high flushing media resistance at the same time is guaranteed.

Die Erfindung löst die gestellte Aufgabe dadurch, dass der Backwarenträger zwei ferromagnetische, elektrische Versorgungskontakte umfasst, die jeweils auf nichtmagnetischen Kontaktauflagen einer Schutzplatte des Rahmens unter Ausbildung einer elektrischen Verbindung aufliegen, wobei den Kontaktauflagen bezüglich der Schutzplatte Permanentmagnete zur lösbaren magnetischen Befestigung der Versorgungskontakte gegenüberliegen. Zufolge dieser Merkmale kann eine zuverlässige mechanische Verbindung des Backwarenträgers unabhängig von dessen gegenüber der Waagrechten verlaufenden Neigungslage am Rahmen der Vorrichtung erfolgen. Die erfindungsgemäßen Versorgungskontakte des Backwarenträgers können nämlich aufgrund des permanentmagnetinduzierten und durch die Schutzplatte und die Kontaktauflagen hindurchwirkenden Magnetfeldes an der beispielsweise an Befestigungsschienen des Rahmens befestigten Schutzplatte gehalten und von dieser wieder gelöst werden, während die Versorgungskontakte bei in den Rahmen eingeschobenem Backwarenträger gemeinsam mit den Kontaktauflagen eine elektrische Verbindung ausbilden. Diese elektrische Verbindung wird bei erneuter Entnahme des Backwarenträgers aus der Vorrichtung und somit einer Trennung von Versorgungskontakten und Kontaktauflagen wieder unterbrochen. Dadurch, dass die Permanentmagnete auf der den Kontaktauflagen gegenüberliegenden Seite der Schutzplatte angeordnet sind, wirken auf die in der Regel relativ spröden Permanentmagnete keine unmittelbaren mechanischen Kontaktkräfte, wodurch die Gefahr eines Magnetbruches reduziert und eine lange Standzeit erreicht werden kann. Zur elektrischen Verbindung bildet je ein ferromagnetischer Versorgungskontakt gemeinsam mit einer nichtmagnetischen Kontaktauflage ein elektrisches Kontaktpaar aus, wobei sowohl die Versorgungskontakte auf der Seite des Backwarenträgers als auch die Kontaktauflagen auf der Seite des Rahmens über elektrischen Verbindungsleitungen mit einem Heizelement bzw. einer Stromversorgung verbunden werden können. Damit eine hohe Spülmedienbeständigkeit ermöglicht wird, können die ferromagnetischen Versorgungskontakte aus einem korrosionsbeständigen, ferromagnetischen Stahl gefertigt sein. Um die in der Regel geringe elektrische Leitfähigkeit des ferromagnetischen Stahls zu kompensieren, können die Versorgungskontakte beispielsweise als Kontaktplatten ausgebildet sein, sodass zufolge der sich dabei ergebenden Kontaktflächen ein relativ großer elektrischer Leitungsquerschnitt bereitgestellt werden kann. Die an der Schutzplatte angeordneten nichtmagnetischen Kontaktauflagen können beispielsweise aus nichtmagnetischem Stahl gefertigt sein und ebenfalls Kontaktplatten ausbilden. Es versteht sich darüber hinaus von selbst, dass eine erfindungsgemäße Vorrichtung auch mehrere Backwarenträger aufweisen kann.The invention solves the problem in that the baked goods carrier comprises two ferromagnetic, electrical supply contacts, which each rest on non-magnetic contact surfaces of a protective plate of the frame to form an electrical connection, the contact surfaces being opposed to the protective plate by permanent magnets for releasable magnetic attachment of the supply contacts. As a result of these features, a reliable mechanical connection of the baked goods carrier can take place on the frame of the device independently of its inclined position relative to the horizontal. The supply contacts of the baked goods carrier according to the invention can namely, due to the permanent magnet-induced magnetic field acting through the protective plate and the contact pads, be held on the protective plate, which is fastened, for example, to mounting rails of the frame, and released again from it, while the supply contacts, when the baked goods carrier is pushed into the frame, together with the contact pads a form electrical connection. This electrical connection is interrupted again when the baked goods carrier is removed from the device and thus the supply contacts and contact pads are separated. Because the permanent magnets are arranged on the side of the protective plate opposite the contact pads, the usually relatively brittle permanent magnets do not have any direct mechanical contact forces, which reduces the risk of the magnet breaking and a long service life can be achieved. For the electrical connection, a ferromagnetic supply contact forms an electrical contact pair together with a non-magnetic contact pad, whereby both the supply contacts on the side of the baked goods carrier and the contact pads on the side of the frame can be connected to a heating element or a power supply via electrical connecting lines. The ferromagnetic supply contacts can be made of corrosion-resistant, ferromagnetic steel so that a high level of flushing media resistance is made possible be. In order to compensate for the generally low electrical conductivity of the ferromagnetic steel, the supply contacts can be designed, for example, as contact plates, so that a relatively large electrical line cross-section can be provided as a result of the resulting contact surfaces. The non-magnetic contact pads arranged on the protective plate can, for example, be made of non-magnetic steel and also form contact plates. It also goes without saying that a device according to the invention can also have several baked goods carriers.

Um bei zuverlässiger elektrischer Kontaktierung der Versorgungskontakte mit den Kontaktauflagen die mechanische Verbindung des Backwarenträgers an der Schutzplatte zu verbessern, insbesondere, wenn der Backwarenträger zur verbesserten Warenpräsentation gegenüber der Waagrechten geneigt ist, wird vorgeschlagen, dass die nichtmagnetischen Kontaktauflagen Aussparungen im Bereich der Permanentmagnete aufweisen. Die Aussparungen können dabei so ausgebildet sein, dass das gegenüber den ferromagnetischen Versorgungskontakten verbindungswirksame magnetische Feld der Permanentmagnete durch die Kontaktauflagen nicht abgeschwächt bzw. abgeschirmt wird, während die Kontaktauflagen für einen zuverlässigen elektrischen Stromfluss ausreichend große Kontaktflächen bilden. Im Falle von beispielsweise als Kontaktplatten ausgebildeten Kontaktauflagen können die Aussparungen so gewählt werden, dass diese den Permanentmagneten unmittelbar bezüglich der Schutzplatte gegenüberliegen, während die Kontaktauflagen die Aussparungen zumindest abschnittsweise umgeben, sodass die sich aufgrund des magnetischen Feldes ergebende Anpresskraft auf die Kontaktauflagen und die Versorgungskontakte unmittelbar übertragen werden kann. Bei beispielsweise quaderförmigen Permanentmagneten mit rechteckiger Grundfläche können die Kontaktauflagen demnach als Kontaktplatten mit U-Profil ausgebildet sein. In Abhängigkeit der je nach eingesetztem Werkstoff unterschiedlichen magnetischen Eigenschaften der Kontaktauflagen bzw. des durch die Permanentmagneten induzierten Magnetfeldes können die Kontaktauflagen aber auch vollflächig, also aussparungsfrei, ausgebildet sein.In order to improve the mechanical connection of the baked goods carrier to the protective plate with reliable electrical contact between the supply contacts and the contact pads, especially if the baked goods carrier is inclined relative to the horizontal for improved product presentation, it is proposed that the non-magnetic contact pads have recesses in the area of the permanent magnets. The recesses can be designed in such a way that the magnetic field of the permanent magnets, which is effective in connection with the ferromagnetic supply contacts, is not weakened or shielded by the contact pads, while the contact pads form sufficiently large contact surfaces for a reliable electrical current flow. In the case of contact pads designed as contact plates, for example, the recesses can be selected so that they are directly opposite the permanent magnets with respect to the protective plate, while the contact pads surround the recesses at least in sections, so that the contact pressure resulting from the magnetic field is directly applied to the contact pads and the supply contacts can be transferred. In the case of, for example, cuboid permanent magnets with a rectangular base area, the contact pads can accordingly be designed as contact plates with a U-profile. Depending on the different magnetic properties of the contact pads, depending on the material used, or the magnetic field induced by the permanent magnets, the contact pads can, however, also be configured over the entire surface, that is to say free of gaps.

Um eine einfache Positionierung des Backwarenträgers gegenüber der Schutzplatte zu ermöglichen, können die Kontaktauflagen auch diamagnetisch sein. Aufgrund der dann leichten magnetischen Abstoßung der Kontaktauflagen gegenüber dem durch die Permanentmagneten erzeugten Magnetfeld erhöht sich die magnetische Flussdichte im Bereich der Aussparung der Kontaktauflagen, was eine zuverlässige Ausrichtung der ferromagnetischen Versorgungskontakte gegenüber den Kontaktauflagen begünstigt, sodass sich Entnahme- bzw. Einschubvorgänge des Backwarenträgers in den Rahmen einfach durchführen lassen.The contact pads can also be diamagnetic in order to enable easy positioning of the baked goods carrier in relation to the protective plate. Due to the then slight magnetic repulsion of the contact pads compared to the magnetic field generated by the permanent magnets, the magnetic flux density increases in the area of the recess of the contact pads, which favors a reliable alignment of the ferromagnetic supply contacts with respect to the contact pads, so that removal or insertion processes of the baked goods carrier in the Just let the frame go through.

Damit trotz zuverlässiger elektrischer Verbindung der Versorgungskontakte die Montage der erfindungsgemäßen Vorrichtung, insbesondere die Montage des Backwarenträgers und der Schutzplatte erleichtert wird, können zwischen den Versorgungskontakten und dem Backwarenträger und/oder zwischen den Kontaktauflagen und der Schutzplatte elektrisch leitfähige, beispielsweise Schrauben, Schraubenmuttern sowie Beilagscheiben umfassende Schraubverbindungen vorgesehen sein, die elektrische Anschlussstellen bilden. Zufolge dieser Maßnahmen können zusätzliche elektrische Verbindungsleitungen entfallen, sodass nicht nur die Fehleranfälligkeit zufolge von Korrosion, sondern auch die Endmontage rascher und einfacher durchführbar ist. Um insbesondere im Zusammenhang mit korrosionsbeständigem Schraubenmaterialien eine gute elektrische Leitfähigkeit zu gewährleisten, empfiehlt es sich im Hinblick auf einen ausreichenden Leitungsquerschnitt entsprechend groß dimensionierte Schraubverbindungen, beispielsweise M3 gemäß DIN-Norm, vorzusehen.So that the assembly of the device according to the invention, in particular the assembly of the baked goods carrier and the protective plate, is facilitated despite the reliable electrical connection of the supply contacts, electrically conductive, for example screws, nuts and washers can be provided between the supply contacts and the baked goods carrier and / or between the contact pads and the protective plate Screw connections can be provided which form electrical connection points. As a result of these measures, additional electrical connection lines can be omitted, so that not only the susceptibility to errors due to corrosion, but also the final assembly can be carried out more quickly and easily. In order to ensure good electrical conductivity, especially in connection with corrosion-resistant screw materials, it is advisable to provide screw connections with correspondingly large dimensions, for example M3 in accordance with the DIN standard, with regard to a sufficient cable cross-section.

Um eine gleichmäßige Temperierung der warmzuhaltenden Backwaren zu ermöglichen, wird vorgeschlagen, dass der Backwarenträger ein, eine Heizschicht auf Kohlenstoffbasis aufweisendes Heizelement zur Temperierung der Backwaren umfasst, das mit den ferromagnetischen Versorgungskontakten elektrisch verbunden ist. Das beispielsweise als elektrisch betriebene Heizfolie ausgebildete Heizelement kann in den Backwarenträgerboden bzw. zwischen einem Warmhalteschalenboden des Backwarenträgers und einer zusätzlichen Bodenplatte mit Hilfe eines 2-Komponenten-Klebers eingeklebt sein. Im Falle von elektrisch leitfähigen Schraubverbindungen kann eine direkte elektrische Verbindung der Versorgungskontakte mit dem Heizelement über die Schraubverbindung selbst erfolgen, ohne zusätzliche Verbindungsleitungen vorsehen zu müssen, sodass sich eine besonders hohe Korrosionsbeständigkeit ergibt. Besonders günstige Temperierbedingungen ergeben sich, wenn als aktive Heizschicht des Heizelementes eine Carbonpaste bzw. ein Carbonlack vorgesehen ist. Dadurch, dass die Carbonpastenschicht als Kaltleiter (PTC-Widerstand) wirkt, der so gewählt werden kann, dass dieser bei Temperaturen über 62°C den Stromfluss abriegelt, kann sich die Oberflächentemperatur der den Backwaren zugewandten Backträgerbodenseite in einem für die Backwaren günstigen Temperaturbereich zwischen 50°C und 62°C einpendeln.In order to enable a uniform temperature control of the baked goods to be kept warm, it is proposed that the baked goods carrier comprises a heating element having a carbon-based heating layer for controlling the temperature of the baked goods, which is electrically connected to the ferromagnetic supply contacts. The heating element, designed for example as an electrically operated heating film, can be glued into the base of the baked goods carrier or between a warming tray base of the baked goods carrier and an additional base plate with the aid of a 2-component adhesive. In case of Electrically conductive screw connections, a direct electrical connection of the supply contacts to the heating element can be made via the screw connection itself, without having to provide additional connecting lines, so that a particularly high level of corrosion resistance results. Particularly favorable temperature control conditions result if a carbon paste or a carbon lacquer is provided as the active heating layer of the heating element. Because the carbon paste layer acts as a PTC resistor, which can be selected so that it blocks the flow of current at temperatures above 62 ° C, the surface temperature of the baking tray bottom side facing the baked goods can be in a temperature range between 50 Level off between ° C and 62 ° C.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen

Fig. 1
einen schematischen Schnitt einer erfindungsgemäßen Vorrichtung mit einem lösbar an einem Rahmen befestigten Backwarenträger und
Fig. 2
eine perspektivische Darstellung eines erfindungsgemäßen Backwarenträgers und einer Schutzplatte in einem kleineren Maßstab.
In the drawing, the subject matter of the invention is shown, for example. Show it
Fig. 1
a schematic section of a device according to the invention with a baked goods carrier releasably attached to a frame and
Fig. 2
a perspective view of a baked goods carrier according to the invention and a protective plate on a smaller scale.

Eine erfindungsgemäße Vorrichtung zur Ausgabe von Backwaren weist einen Rahmen 1 und einen an diesem lösbar befestigten, beheizbaren Backwarenträger 2 auf. Der Backwarenträger 2 weist zudem zwei ferromagnetische, elektrische Versorgungskontakte 3 auf, die jeweils auf nichtmagnetischen Kontaktauflagen 4 einer Schutzplatte 5 des Rahmens 1 unter Ausbildung einer elektrischen Verbindung aufliegen. Den Kontaktauflagen 4 liegen bezüglich der Schutzplatte 5 Permanentmagnete 6 zur lösbaren magnetischen Befestigung der Versorgungskontakte 3 mit den Kontaktauflagen 4 gegenüber. Befestigungsschienen 7 können gemeinsam mit Befestigungsleisten 8 eine Befestigungsauflage für die Schutzplatte 5 bilden. Um die Neigung des Backwarenträgers gegenüber der Waagrechten einstellen zu können, kann der Rahmen 1 Rastaussparungen 9 aufweisen, in welche Verbindungszapfen 10 der Befestigungsschienen 7 einrasten können.A device according to the invention for dispensing baked goods has a frame 1 and a heatable baked goods carrier 2 detachably fastened to it. The baked goods carrier 2 also has two ferromagnetic, electrical supply contacts 3, which each rest on non-magnetic contact pads 4 of a protective plate 5 of the frame 1 to form an electrical connection. With respect to the protective plate 5, permanent magnets 6 are located opposite the contact pads 4 for the releasable magnetic attachment of the supply contacts 3 to the contact pads 4. Fastening rails 7, together with fastening strips 8, can form a fastening support for the protective plate 5. In order to be able to adjust the inclination of the baked goods carrier relative to the horizontal, the frame 1 can have latching recesses 9 into which connecting pins 10 of the fastening rails 7 can latch.

Die Versorgungskontakte 3 sind mit einer Bodenplatte 11 des Backwarenträgers 2 sowie mit einem zwischen Bodenplatte 11 und dem Boden einer Warmhalteschale 12 des Backwarenträgers 2 eingeklebten Heizelement 13, beispielsweise einer Heizfolie mit Carbonlack als aktive Heizschicht, über eine elektrisch leitfähige Schraubverbindung verbunden. Die Kontaktauflagen 4 sind mit der Schutzplatte 5 ebenfalls über eine elektrisch leitfähige Schraubverbindung verbunden. Die Schraubverbindungen umfassen jeweils eine Schraube 14, eine Beilagscheibe 15 sowie eine Schraubenmutter 16, wobei die Schraubverbindungen insbesondere im Bereich der Schraubenmutter 16 elektrische Anschlussstellen 17 für beispielsweise Kabelschuhe bilden.The supply contacts 3 are connected via an electrically conductive screw connection to a base plate 11 of the baked goods carrier 2 and to a heating element 13 glued between the base plate 11 and the base of a warming tray 12 of the baked goods carrier 2, for example a heating film with carbon lacquer as an active heating layer. The contact pads 4 are also connected to the protective plate 5 via an electrically conductive screw connection. The screw connections each include a screw 14, a washer 15 and a screw nut 16, the screw connections forming electrical connection points 17 for, for example, cable lugs, in particular in the area of the screw nut 16.

Wie aus der Fig. 2 hervorgeht, können die Versorgungskontakte 3 sowie die Kontaktauflagen 4 als Kontaktplatten ausgebildet sein. Dabei können die Versorgungskontakte 3 aus einem ferromagnetischen, korrosionsbeständigen Stahl der Werkstoffnummer 1.4462 und die Kontaktauflagen 4 aus einem nichtmagnetischen, korrosionsbeständigen Stahl der Werkstoffnummer V4A gefertigt sein. Die dabei auftretenden elektrischen Leitungswiderstände befinden sich in etwa im Bereich von 3 - 8 mOhm, während der das Heizelement 13, die Versorgungskontakte 3, die Kontaktauflagen 4 sowie die Schraubverbindungen umfassende elektrische Gesamtwiderstand im Bereich von ca. 6 Ohm liegt.As from the Fig. 2 is apparent, the supply contacts 3 and the contact pads 4 can be designed as contact plates. The supply contacts 3 can be made of a ferromagnetic, corrosion-resistant steel of material number 1.4462 and the contact pads 4 of a non-magnetic, corrosion-resistant steel of material number V4A. The resulting electrical line resistances are approximately in the range of 3 - 8 mOhm, while the total electrical resistance comprising the heating element 13, the supply contacts 3, the contact pads 4 and the screw connections is in the range of approximately 6 ohms.

Um bei zuverlässiger elektrischer Kontaktierung der Versorgungskontakte 3 mit den Kontaktauflagen 4 die magnetische Haltekraft zu verbessern, können die in Fig. 2 in einer gegenüber der Schutzplatte 5 abgebildeten Explosionsdarstellung gezeigten Kontaktauflagen 4 Aussparungen im Bereich der Permanentmagnete 6 aufweisen. Zufolge dieser Maßnahmen wird das gegenüber den ferromagnetischen Versorgungskontakten 3 wirksame magnetische Feld der Permanentmagneten 6 durch die Kontaktauflagen 4 nicht abgeschwächt, während die Kontaktauflagen 4 für einen zuverlässigen Stromfluss ausreichend große Kontaktflächen bilden.In order to improve the magnetic holding force with reliable electrical contact between the supply contacts 3 and the contact pads 4, the in Fig. 2 in an exploded view shown opposite the protective plate 5, contact pads 4 have recesses in the area of the permanent magnets 6. As a result of these measures, the effective magnetic field of the permanent magnets 6 with respect to the ferromagnetic supply contacts 3 is not weakened by the contact pads 4, while the contact pads 4 form sufficiently large contact surfaces for a reliable current flow.

Claims (4)

  1. Device for outputting baked goods, having a frame (1) and a heatable baked goods support (2) releasably attached to said frame, characterised in that the baked goods support (2) comprises two ferromagnetic electrical supply contacts (3) which each lie on non-magnetic contact pads (4) of a protective plate (5) of the frame (1) thus forming an electrical connection, wherein permanent magnets (6) for releasable magnetic attachment of the supply contacts (3) to the contact pads (4) are located opposite the contact pads (4) in relation to the protective plate (5).
  2. Device as claimed in claim 1, characterised in that the non-magnetic, preferably diamagnetic, contact pads (4) comprise apertures in the region of the permanent magnets (6).
  3. Device as claimed in claim 1 or 2, characterised in that between the supply contacts (3) and the baked goods support (2) and/or between the contact pads (4) and the protective plate (5), electrically conductive screw connections are provided which form electrical connection points (17).
  4. Device as claimed in any one of the preceding claims, characterised in that the baked goods support (2) comprises a heating element (13), comprising a carbon-based heating layer, in order to control the temperature of the baked goods, which heating element is electrically connected to the ferromagnetic supply contacts (3).
EP20154356.8A 2019-04-12 2020-01-29 Device for outputting bakery products Active EP3723449B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50335/2019A AT522300B1 (en) 2019-04-12 2019-04-12 Device for dispensing baked goods

Publications (2)

Publication Number Publication Date
EP3723449A1 EP3723449A1 (en) 2020-10-14
EP3723449B1 true EP3723449B1 (en) 2021-06-16

Family

ID=69400437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20154356.8A Active EP3723449B1 (en) 2019-04-12 2020-01-29 Device for outputting bakery products

Country Status (3)

Country Link
EP (1) EP3723449B1 (en)
AT (1) AT522300B1 (en)
HU (1) HUE055511T2 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611069A (en) * 1948-02-05 1952-09-16 Corning Glass Works Electric appliance and stand assembly therefor
DE2740542A1 (en) * 1977-09-06 1979-03-08 Peter Braun Electric cooker plate with magnetic fastening - has permanent magnet operated by exciter coil, to lower heat transfer resistance from hot plate
DE3149187A1 (en) * 1981-12-11 1983-06-30 Alois Ing.(grad.) 8000 München Mack Device, in particular in the form of a shop shelving or sales counter unit
US6462312B1 (en) * 2001-12-20 2002-10-08 Robert W. Feagley Magnetically attached heating unit for a chafing dish
DE102006046427A1 (en) * 2006-09-22 2008-04-03 Rieber Gmbh & Co. Kg Hob for food container has plate on which container is placed with heater on its underside and magnetic holding arrangement integrated into plate or arranged in vicinity of its underside
US20160113066A1 (en) * 2014-10-20 2016-04-21 Shadonna Bethel Heating Device for Spray Bottles
DE202015007690U1 (en) * 2015-11-06 2017-02-07 Kesseböhmer Holding Kg Goods dispensing unit for self-service removal of baked goods
DE102016112830A1 (en) * 2016-07-13 2018-01-18 Lidl Stiftung & Co. Kg Temperature control plate, use of a tempering plate and self-service dispenser shelf with tempering plate

Also Published As

Publication number Publication date
EP3723449A1 (en) 2020-10-14
AT522300A1 (en) 2020-10-15
HUE055511T2 (en) 2021-11-29
AT522300B1 (en) 2020-11-15

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