EP1564498B1 - Switching device for controlling of an industrial cooking appliance - Google Patents

Switching device for controlling of an industrial cooking appliance Download PDF

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Publication number
EP1564498B1
EP1564498B1 EP05001461.2A EP05001461A EP1564498B1 EP 1564498 B1 EP1564498 B1 EP 1564498B1 EP 05001461 A EP05001461 A EP 05001461A EP 1564498 B1 EP1564498 B1 EP 1564498B1
Authority
EP
European Patent Office
Prior art keywords
door
switch
switching device
magnet
cooking appliance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05001461.2A
Other languages
German (de)
French (fr)
Other versions
EP1564498A1 (en
Inventor
Rainer Lammerskitten
Hannes Wild
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.)
Welbilt Deutschland GmbH
Original Assignee
Convotherm Elektrogeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Convotherm Elektrogeraete GmbH filed Critical Convotherm Elektrogeraete GmbH
Publication of EP1564498A1 publication Critical patent/EP1564498A1/en
Application granted granted Critical
Publication of EP1564498B1 publication Critical patent/EP1564498B1/en
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/022—Latches

Definitions

  • the invention relates to a switching device for the control of a commercial cooking appliance according to the preamble of claim 1.
  • a closure device for the door of a furnace in which a handle in the form of a magnet is arranged, which cooperates with a magnetic switch which is arranged in the frame of the furnace.
  • switching devices are known which are constructed from a contact and a magnet operating in the cooking chamber door. Investigations carried out in the context of the invention have shown, however, that due to the current arrangement of the switch and the magnet of the switching device, especially when slamming the door, short contacts of the switch are made, which in the short term actuates the fan or the fan and the heater. The reason for this is mainly seen in the fact that by slamming the door this short term in closing contact device and thereby unwanted contacts made, resulting in the previously explained unwanted actuation of the fan or the fan.
  • the magnet is arranged to actuate the switch fixed to the housing in the movable door latch of the door handle, there is the possibility to exploit the fact that the locked position of the door results in a well-defined positioning of the bolt.
  • This fact is exploited by the invention, since the magnet is arranged in the movable door latch such that it is positioned in the locked state of the door adjacent to the switch fixed to the housing, that in this position reliably a contacting of the switching device and thus an actuation of the control device accomplished, in any other position of the door and thus the door bolt, however, such contact is certainly avoidable.
  • the contact is thus not dependent on the distance of the door to the housing, as is the case in the prior art, but on the position of a closing element, in particular in the form of a bolt.
  • a switching device 1 for the control of a commercial cooking appliance 2 which has a cooking chamber, not shown.
  • the cooking chamber has a door 3, which between an open position, not shown in the figures, one in Fig. 1 shown Anlwest ein with a gap 8 between a seal 9 and the door 3 and a in Fig. 2 shown closed position is movable.
  • the door 3 a door handle 4, which is provided with a movable according to its movement door latch 5.
  • the door latch 5 cooperates with a mechanism for achieving the previously described different positions of the door 3.
  • a housing-fixed switch 6 which may be formed for example as a reed switch.
  • This switch 6 is in the Fig. 1 and 2 shown schematically simplified and is fixed to a suitable housing part of the cooking appliance 2.
  • Fig. 2 illustrates that in the movable door latch 5, a magnet 7, preferably in the form of a permanent magnet, is integrated. Since the door latch 5 is movable between the different positions of the door 3 and thus occupies different positions relative to the switch 6, it is inventively possible to ensure both a contacting and avoiding a contact.
  • Fig. 1 shows here that when moving the door handle 4 in the lifting position shown there, the door latch 5 with his integrated magnet 7 is pivoted away from the switch 6, so that in this position even with a violent slamming of the door 3 due to the resulting distance between the switch 6 and 7 magnet safely contacting and thus actuation of the switching device 1 is avoided.
  • the latch 5 assumes a precisely defined position fixed by the door handle 4 in which the magnet 7 likewise occupies a precisely defined position relative to the switch 6.
  • the positioning of the magnet 7 within the door bolt 5 is in this case made according to the invention so that only in this position, the distance between the switch 6 and the magnet 7 is so small that the switching device 1 by the interaction of the switch 6 and the magnet can be operated.
  • the switching device 1 can not be operated so that safely unwanted contacts in any other position of the door 3 can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Stoves And Ranges (AREA)

Description

Die Erfindung betrifft eine Schalteinrichtung für die Steuerung eines gewerblichen Gargerätes gemäß dem Oberbegriff des Anspruches 1.The invention relates to a switching device for the control of a commercial cooking appliance according to the preamble of claim 1.

Gewerbliche Gargeräte, wie insbesondere Heißluftdämpfer, weisen eine Gerätesteuerung für sämtliche zu steuernden Komponenten, wie insbesondere das Gebläse und die Heizeinrichtung, auf. Hierbei muss sichergestellt sein, dass die Steuerung beim Öffnen der Tür in eine Anlüftstellung, in der zwischen Tür und Gerätegehäuse nur ein kleiner Spalt zum Druckausgleich offen gelassen wird, und in die vollständige Offenstellung der Tür insbesondere das Gebläse und die Heizeinrichtung sofort ausschaltet, da es sonst zu Verbrennungen und/oder Verbrühungen des Bedienpersonals kommen kann.Commercial cooking appliances, such as in particular combi steamer, have a device control for all components to be controlled, in particular the fan and the heater on. It must be ensured that when the door is opened in a starting position in which only a small gap is left open between the door and the device housing for pressure equalization, and in the fully open position of the door, in particular the fan and the heater immediately switches off, as it otherwise burns and / or scalding of the operating personnel can occur.

Aus der DE 38 38 917 A1 ist eine Verschlusseinrichtung für die Tür eines Ofens bekannt, bei der in einem Griff ein Betätigungsteil in Form eines Magneten angeordnet ist, der mit einem Magnetschalter zusammenwirkt, der im Rahmen des Ofens angeordnet ist.From the DE 38 38 917 A1 a closure device for the door of a furnace is known, in which a handle in the form of a magnet is arranged, which cooperates with a magnetic switch which is arranged in the frame of the furnace.

Allgemein sind Schalteinrichtungen bekannt, die aus einem Kontakt und einem diesen betätigenden Magneten in der Garraumtür aufgebaut sind. Im Rahmen der Erfindung durchgeführte Untersuchungen haben jedoch ergeben, dass aufgrund der derzeitigen Anordnung des Schalters und des Magneten der Schalteinrichtung vor allem beim Zuschlagen der Tür kurze Kontaktierungen des Schalters erfolgen, was vor allem das Gebläse bzw. den Lüfter und die Heizeinrichtung kurzfristig betätigt. Der Grund hierfür ist hauptsächlich darin zu sehen, dass durch das Zuschlagen der Tür diese kurzfristig in Schließkontakt gerät und dadurch ungewollte Kontaktierungen erfolgen, was zu dem zuvor erläuterten ungewollten Betätigen des Gebläses bzw. des Lüfters führt.In general, switching devices are known which are constructed from a contact and a magnet operating in the cooking chamber door. Investigations carried out in the context of the invention have shown, however, that due to the current arrangement of the switch and the magnet of the switching device, especially when slamming the door, short contacts of the switch are made, which in the short term actuates the fan or the fan and the heater. The reason for this is mainly seen in the fact that by slamming the door this short term in closing contact device and thereby unwanted contacts made, resulting in the previously explained unwanted actuation of the fan or the fan.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Schalteinrichtung der im Oberbegriff des Anspruches 1 angegebenen Art zu schaffen, die ein Ausschalten insbesondere des Lüfters und der Heizeinrichtung eines Gargerätes in der Anlüftstellung der Tür des Garraumes sicherstellt und andererseits die Vermeidung ungewollter Kontaktierungen ermöglicht.It is therefore an object of the present invention to provide a switching device specified in the preamble of claim 1 way, which in particular turning off the fan and ensures the heater of a cooking appliance in the Anlüftstellung the door of the cooking chamber and on the other hand makes it possible to avoid unwanted contacts.

Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruches 1.The solution of this object is achieved by the features of claim 1.

Dadurch, dass der Magnet zur Betätigung des gehäusefest angeordneten Schalters im bewegbaren Türriegel des Türgriffes angeordnet ist, ergibt sich die Möglichkeit, den Umstand auszunutzen, dass die verriegelte Stellung der Tür eine genau definierte Positionierung des Riegels ergibt. Dieser Umstand wird durch die Erfindung ausgenutzt, da der Magnet in dem bewegbaren Türriegel derart angeordnet ist, dass er im verriegelten Zustand der Tür derart benachbart zum gehäusefest angeordneten Schalter positioniert wird, dass in dieser Stellung verlässlich eine Kontaktierung der Schalteinrichtung und damit eine Betätigung der Steuereinrichtung bewerkstelligt wird, in jedweder anderer Stellung der Tür und damit des Türriegels jedoch eine derartige Kontaktierung sicher vermeidbar ist. Die Kontaktierung ist damit nicht vom Abstand der Tür zum Gehäuse abhängig, wie dies beim Stand der Technik der Fall ist, sondern von der Stellung eines Schließelementes, insbesondere in Form eines Riegels.The fact that the magnet is arranged to actuate the switch fixed to the housing in the movable door latch of the door handle, there is the possibility to exploit the fact that the locked position of the door results in a well-defined positioning of the bolt. This fact is exploited by the invention, since the magnet is arranged in the movable door latch such that it is positioned in the locked state of the door adjacent to the switch fixed to the housing, that in this position reliably a contacting of the switching device and thus an actuation of the control device accomplished, in any other position of the door and thus the door bolt, however, such contact is certainly avoidable. The contact is thus not dependent on the distance of the door to the housing, as is the case in the prior art, but on the position of a closing element, in particular in the form of a bolt.

Die Unteransprüche haben vorteilhafte Weiterbildungen der Erfindung zum Inhalt.The dependent claims have advantageous developments of the invention to the content.

Weitere Einzelheiten, Merkmale und Vorteile dieser Erfindung ergeben sich aus nachfolgender Beschreibung einer Ausführungsform anhand der Zeichnung. Es zeigt:

Fig. 1
eine schematisch leicht vereinfachte Darstellung einer erfindungsgemäßen Schalteinrichtung in einer Anlüftstellung der Tür eines gewerblichen Gargerätes, und
Fig. 2
eine der Fig. 1 entsprechende Stellung in vollständig geschlossener Stellung der Tür des Gargerätes.
Further details, features and advantages of this invention will become apparent from the following description of an embodiment with reference to the drawing. It shows:
Fig. 1
a schematically slightly simplified representation of a switching device according to the invention in a ventilation position of the door of a commercial Cooking appliance, and
Fig. 2
one of the Fig. 1 corresponding position in the fully closed position of the door of the cooking appliance.

Aus der Zusammenschau der Fig. 1 und 2 ist eine Schalteinrichtung 1 für die Steuerung eines gewerblichen Gargerätes 2 bekannt, das einen nicht näher dargestellten Garraum aufweist. Der Garraum weist eine Tür 3 auf, die zwischen einer in den Figuren nicht gezeigten Offenstellung, einer in Fig. 1 gezeigten Anlüftstellung mit einem Spalt 8 zwischen einer Dichtung 9 und der Tür 3 und einer in Fig. 2 gezeigten Schließstellung bewegbar ist. Hierfür weist die Tür 3 einen Türgriff 4 auf, der mit einem entsprechend seiner Bewegung bewegbaren Türriegel 5 versehen ist. Der Türriegel 5 wirkt mit einer Mechanik zur Erreichung der zuvor erläuterten unterschiedlichen Stellungen der Tür 3 zusammen.From the synopsis of Fig. 1 and 2 a switching device 1 for the control of a commercial cooking appliance 2 is known, which has a cooking chamber, not shown. The cooking chamber has a door 3, which between an open position, not shown in the figures, one in Fig. 1 shown Anlüftstellung with a gap 8 between a seal 9 and the door 3 and a in Fig. 2 shown closed position is movable. For this purpose, the door 3 a door handle 4, which is provided with a movable according to its movement door latch 5. The door latch 5 cooperates with a mechanism for achieving the previously described different positions of the door 3.

Die Fig. 1 und 2 verdeutlichen die Anordnung eines gehäusefesten Schalters 6, der beispielsweise als Reed-Schalter ausgebildet sein kann. Dieser Schalter 6 ist in den Fig. 1 und 2 schematisch vereinfacht dargestellt und ist an einem geeigneten Gehäuseteil des Gargerätes 2 fixiert.The Fig. 1 and 2 make clear the arrangement of a housing-fixed switch 6, which may be formed for example as a reed switch. This switch 6 is in the Fig. 1 and 2 shown schematically simplified and is fixed to a suitable housing part of the cooking appliance 2.

Fig. 2 verdeutlicht, dass im bewegbaren Türriegel 5 ein Magnet 7, vorzugsweise in Form eines Dauermagneten, integriert ist. Da der Türriegel 5 zwischen den unterschiedlichen Stellungen der Tür 3 bewegbar ist und somit unterschiedliche Stellungen relativ zum Schalter 6 einnimmt, ist es erfindungsgemäß möglich, sowohl eine Kontaktierung als auch eine Vermeidung einer Kontaktierung sicherzustellen. Fig. 2 illustrates that in the movable door latch 5, a magnet 7, preferably in the form of a permanent magnet, is integrated. Since the door latch 5 is movable between the different positions of the door 3 and thus occupies different positions relative to the switch 6, it is inventively possible to ensure both a contacting and avoiding a contact.

Fig. 1 zeigt hierbei, dass beim Bewegen des Türgriffes 4 in die dort gezeigte Anlüftstellung der Türriegel 5 mit seinem integrierten Magneten 7 vom Schalter 6 weggeschwenkt wird, so dass in dieser Stellung selbst bei einem heftigen Zuschlagen der Tür 3 aufgrund des dadurch sich ergebenden Abstandes zwischen Schalter 6 und Magnet 7 sicher eine Kontaktierung und damit eine Betätigung der Schalteinrichtung 1 vermieden wird. Fig. 1 shows here that when moving the door handle 4 in the lifting position shown there, the door latch 5 with his integrated magnet 7 is pivoted away from the switch 6, so that in this position even with a violent slamming of the door 3 due to the resulting distance between the switch 6 and 7 magnet safely contacting and thus actuation of the switching device 1 is avoided.

In der in Fig. 2 dargestellten Schließstellung der Tür 3 hingegen nimmt der Riegel 5 eine genau definierte und durch den Türgriff 4 fixierte Stellung ein, in der der Magnet 7 ebenfalls eine genau definierte Lage relativ zum Schalter 6 einnimmt. Die Positionierung des Magneten 7 innerhalb des Türriegels 5 ist hierbei gemäß der Erfindung so getroffen, dass nur in dieser Stellung der Abstand zwischen dem Schalter 6 und dem Magneten 7 derart klein ist, dass die Schalteinrichtung 1 durch das Zusammenwirken des Schalters 6 und des Magneten 7 betätigt werden kann.In the in Fig. 2 On the other hand, the latch 5 assumes a precisely defined position fixed by the door handle 4 in which the magnet 7 likewise occupies a precisely defined position relative to the switch 6. The positioning of the magnet 7 within the door bolt 5 is in this case made according to the invention so that only in this position, the distance between the switch 6 and the magnet 7 is so small that the switching device 1 by the interaction of the switch 6 and the magnet can be operated.

Sobald der Magnet 7 durch Betätigung des Türriegels 4 diese in Fig. 2 gezeigte Stellung verlässt, kann die Schalteinrichtung 1 nicht betätigt werden, so dass sicher ungewollte Kontaktierungen bei jedweder anderer Stellung der Tür 3 vermieden werden können.Once the magnet 7 by pressing the door bolt 4 this in Fig. 2 shown position leaves, the switching device 1 can not be operated so that safely unwanted contacts in any other position of the door 3 can be avoided.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Schalteinrichtungswitching device
22
GargerätCooking appliance
33
Türdoor
44
Türgriffdoor handle
55
Türriegeldeadbolt
66
Schalterswitch
77
Magnetmagnet
88th
Spaltgap
99
Dichtungpoetry

Claims (3)

  1. A switching device (1) for the control of a commercial cooking appliance (2), which has a cooking space that is closable by means of a door (3), wherein the door has a movable door handle (4) having a door latch (5) movable corresponding to the movement of the handle,
    - having a switch (6) attached to the housing; and
    - having a magnet (7) for actuating the switch (6), hereby characterized
    - in that the magnet (7) in the movable door latch is disposed at a site that is positioned adjacent to the switch (6) in the latched state of the door (3) of the cooking appliance (2).
  2. The switching device according to claim 1, further characterized in that the magnet (7) is designed as a permanent magnet.
  3. The switching device according to claim 1 or 2, further characterized in that the switch (6) is a reed switch (6).
EP05001461.2A 2004-02-13 2005-01-25 Switching device for controlling of an industrial cooking appliance Expired - Lifetime EP1564498B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007235 2004-02-13
DE102004007235.3A DE102004007235C5 (en) 2004-02-13 2004-02-13 Commercial cooking appliance

Publications (2)

Publication Number Publication Date
EP1564498A1 EP1564498A1 (en) 2005-08-17
EP1564498B1 true EP1564498B1 (en) 2015-04-08

Family

ID=34684052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05001461.2A Expired - Lifetime EP1564498B1 (en) 2004-02-13 2005-01-25 Switching device for controlling of an industrial cooking appliance

Country Status (3)

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US (1) US7176416B2 (en)
EP (1) EP1564498B1 (en)
DE (1) DE102004007235C5 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015110357B4 (en) 2015-06-26 2025-02-27 Rational Aktiengesellschaft cooking appliance with switching device
DE102017209215A1 (en) 2017-05-31 2018-12-06 Convotherm Elektrogeräte GmbH Cooking appliance, in particular commercial cooking appliance
DE102017125817A1 (en) * 2017-11-06 2019-05-09 Topinox Sarl Cooking device and method for detecting a closed state
DE102020132156B4 (en) 2020-12-03 2022-11-03 Welbilt Deutschland GmbH Cooking device, in particular commercial cooking device
USD982415S1 (en) * 2022-12-19 2023-04-04 Ningbo Fabe Child Safety Co., Ltd. Oven door lock

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995313A (en) * 1988-03-15 1991-02-26 Welbilt Corporation Cooking apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627959A (en) * 1970-03-19 1971-12-14 Sage Laboratories Magnetic latching and switching
DE3838917A1 (en) * 1988-11-17 1990-05-23 Hobart Ag Closure device for the door of a hot-air/steam oven
KR940007232B1 (en) * 1991-12-31 1994-08-10 대우전자 주식회사 Microwave Oven Door Opener
DE4329494C2 (en) * 1993-09-01 1996-03-28 Premark Feg Corp Locking device for controlling a door lock, in particular the door lock of an oven
DE29507654U1 (en) * 1995-05-09 1996-09-05 Ramsauer, Dieter, 42555 Velbert Safety device for the closure of a control cabinet door, a machine cover or the like.
ATE191126T1 (en) * 1998-02-13 2000-04-15 Eloma Gmbh Grosskuechentechnik METHOD FOR ENVIRONMENTALLY-FRIENDLY AND HAZARD-FREE BAKING OR COOKING OF FOOD
DE19914568C2 (en) * 1999-03-31 2003-10-09 Elektro Special Bedarf Link Gm Magnetically operated detector with reed contact
US7235762B2 (en) * 2004-06-14 2007-06-26 Western Industries, Inc. Factory preset temperature warming appliance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995313A (en) * 1988-03-15 1991-02-26 Welbilt Corporation Cooking apparatus

Also Published As

Publication number Publication date
DE102004007235A1 (en) 2005-09-08
US7176416B2 (en) 2007-02-13
US20050194370A1 (en) 2005-09-08
DE102004007235C5 (en) 2016-01-28
EP1564498A1 (en) 2005-08-17
DE102004007235B4 (en) 2008-04-10

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