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WO2012062568A1 - Appareil électroménager - Google Patents

Appareil électroménager Download PDF

Info

Publication number
WO2012062568A1
WO2012062568A1 PCT/EP2011/068647 EP2011068647W WO2012062568A1 WO 2012062568 A1 WO2012062568 A1 WO 2012062568A1 EP 2011068647 W EP2011068647 W EP 2011068647W WO 2012062568 A1 WO2012062568 A1 WO 2012062568A1
Authority
WO
WIPO (PCT)
Prior art keywords
door
door frame
seal
household appliance
electrically conductive
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.)
Ceased
Application number
PCT/EP2011/068647
Other languages
German (de)
English (en)
Inventor
Frank JÖRDENS
Jürgen Salomon
Philipp Schaller
Gerhard Schmidmayer
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to ES11773296.6T priority Critical patent/ES2651927T3/es
Priority to PL11773296T priority patent/PL2638778T3/pl
Priority to EP11773296.6A priority patent/EP2638778B1/fr
Publication of WO2012062568A1 publication Critical patent/WO2012062568A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • H05B6/6417—Door interlocks of the microwave heating apparatus and related circuits
    • 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
    • F24C15/021—Doors specially adapted for stoves or ranges sealings for doors or transparent panel

Definitions

  • the invention relates to a household appliance, comprising a door, a door frame for supporting the door in the closed state and at least one switch for detecting a closed state of the door.
  • silicone seals which are rendered conductive by means of graphite or carbon black for microwave devices are known.
  • an improved protection against microwave leakage radiation is achieved.
  • silicon gaskets filled or filled with graphite are weakened in their mechanical properties compared to unfilled silicones.
  • a household appliance comprising a door and a door frame for supporting the door in a closed state.
  • the door frame and the door are adapted to generate at least one non-mechanically triggering switching function.
  • Such a household appliance has the advantage that on dedicated switches for detecting the closed state (open or closed state), in particular on mechanically triggering switch can be dispensed with. As a result, space and costs can be saved. In addition, a flat construction is possible.
  • the door frame and the door may in particular form at least one non-mechanically triggering switch.
  • a switch can be configured here generally as a switching element, and in particular switch in the strict sense as well as buttons, including sensor buttons include.
  • the door frame and the door generate at least one electrically triggering switching function, in particular form at least one electrically triggering switch.
  • the door frame and the door can generate at least one capacitively triggering switching function, in particular form at least one capacitively triggering switch (especially sensor switch).
  • the switch can close or open a circuit of the household appliance and thus trigger a predetermined behavior of the household appliance.
  • the door frame and the door each have at least one electrically conductive contact area, which lie on one another in the closed state of the door or contact each other.
  • a circuit can be closed electrically, as a result of which the closed state (open and / or closed state) of the door can be detected.
  • the contact areas may represent parts of a capacitive proximity sensor, which is a switch or circuit or integrated in such. It is an advantageous embodiment, in particular for electrical switches, that the door frame or the door has at least one electrically conductive contact area and the door or the door frame has at least two contact fields resting on the contact area in the closed state of the door. The contact fields are spaced apart.
  • the contact area and the contact pads are spaced apart, and the contact pads may be electrically isolated from each other, for example.
  • the contact area bridges the contact fields, which can be detected accordingly.
  • the contact area and the contact pads may allow for capacitive switching.
  • the electrically conductive contact region has at least one seal and the at least one seal is electrically conductive. This allows a particularly secure operation of the switch. In addition, a tolerance compensation can be provided by the seal.
  • the gasket has carbon nanotubes.
  • the carbon nanotubes allow a very high electrical conductivity of the seal.
  • the carbon nanotubes may comprise single walled tubes (SWCNT) and / or multiwalled tubes (MWCNT).
  • the carbon nanotubes may comprise open and / or closed tubes.
  • the carbon nanotubes may be empty and / or filled.
  • the seal may additionally or alternatively comprise graphene.
  • the seal silicone, rubber or thermoplastic see elastomers see as a base material in which the carbon nanotubes are distributed.
  • This seal has the advantage of improving its mechanical strength over normal seal materials not filled with carbon nanotubes.
  • the contact pads comprise non-precious metal-containing, electrically conductive particles (e.g., copper and / or other semi-precious metal, graphite, graphene, carbon nanotubes, etc.). By eliminating precious metal (e.g., Au, Pd, Au, etc.), inexpensive producible and easily applied contact pads can be provided.
  • non-noble metal-containing, electrically conductive particles are distributed in a screen printing paste. This allows the contact fields to be easily printed. In particular, a print layout for the contact fields, e.g. possible with glass panes.
  • the non-noble metal-containing, electrically conductive particles may be distributed, for example, during their application in a fluid. It is still an embodiment that the door frame and the door form a plurality of non-mechanically triggering, in particular redundant, switch. As a result, the closed state of the door can be detected particularly reliably. For example, more than two contact fields may also be present, which form two or more independently triggering switches. The plurality of switches may in particular be electrically connected in series.
  • the household appliance has a microwave function (microwave oven).
  • the microwave device may be a single device or a combination device, e.g. with an oven function.
  • the microwave oven or its door or door frame has an electrically conductive seal, there is an additional improvement in the microwave shielding.
  • other household appliances may also be designed, e.g. Dishwashers, washing machines, ovens, etc.
  • the object is also achieved by a method for detecting a closed state of a door of a household appliance, wherein the closed state is detectable by an approach (or a distance) or by contacting at least one respective electrical contact region of the door and a door frame.
  • This method gives the same advantages as the household appliance described above.
  • the closed state can be detected by an approach (or a distance) or by contacting an electrically conductive seal of the door or the door frame at least one contact region of the door frame or the door.
  • the gasket may in particular have been rendered electrically conductive by carbon nanotubes.
  • the method can be further designed analogously to the household appliance described above.
  • the Fig. Shows a household appliance in the form of a microwave oven 1.
  • the microwave oven 1 has a cooking chamber 2, which is closable by means of a pivotable door 3.
  • the door 3 has a microwave-tight window 4, which is surrounded by and supported by a peripheral frame, the window frame 5.
  • the window frame 5 is in the closed state of the door 3 on a matching door frame 6.
  • the door frame 6 can be formed for example by a body or a housing wall of the microwave oven 1.
  • the window frame 5 At its resting on the door frame 6 back 7, the window frame 5 has a circumferentially closed microwave seal (o.Abb.) Or a part thereof, wherein the microwave seal an undesired lateral leakage of microwave radiation between the back 7 of the window frame 5 and the door frame 6, for example can be strongly suppressed or even prevented by negative interference of microwave radiation. Alternatively or additionally, such a type of microwave seal can also be present on the door frame 6.
  • the door frame 6 additionally has an encircling rebounding seal 8 at the front (i.e., forward towards the door 3).
  • This seal 8 has silicone as the base material, which is set electrically conductive by carbon nanotubes.
  • the electrical conductivity further suppresses possible leakage radiation through a gap between the door frame 6 and the door 3. Also, in particular assembly tolerances and / or material deformations can be compensated during operation.
  • the carbon nanotubes also make the silicone seal particularly resistant to mechanical stress.
  • the contact fields 9 may contain, for example, silver or a silver / palladium mixture and may have been applied by means of a screen printing process, for example.
  • the contact fields 9 approach when closing the electrically conductive seal 8.
  • the seal 8 and the contact pads 9 form parts of a switch which is arranged in a circuit. Depending on whether the switch is a capacitive proximity switch or an electrical switch, the switch is at a sufficient approximation or only at a mechanical Contact closed. For example, to close the electrical switch, the electrically conductive seal 8 electrically bridge or short pairs of contact pads 9. By opening and / or closing the switch, an action can be triggered by means of the circuit.
  • the circuit can respond to opening of the switch by lifting the door from the door frame 7.
  • a microwave operation can be interrupted and optionally an audible or visual warning signal are triggered.
  • the switch 8, 9 can thus be used in particular as an emergency stop switch.
  • the three contact fields 9 By providing the three contact fields, increased detection reliability can be achieved, for example by the three contact fields 9 forming two switches of a switching circuit connected electrically in series.
  • the electrically conductive seal on the door especially at the window frame, if any, be present.
  • the door can generally be designed differently, for example, frameless.
  • the electrically conductive seal and / or the contact fields can be applied directly to the cover, eg a glass pane. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

L'invention concerne un appareil électroménager (1) présentant une porte (3), un cadre de porte (6) contre lequel la porte (3) s'appuie à l'état fermé et au moins un commutateur (8; 9) destiné à détecter un état de fermeture de la porte (3). L'invention se caractérise en ce que le cadre de porte (6) et la porte (3) forment au moins un commutateur (8; 9) à déclenchement non mécanique.
PCT/EP2011/068647 2010-11-08 2011-10-25 Appareil électroménager Ceased WO2012062568A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES11773296.6T ES2651927T3 (es) 2010-11-08 2011-10-25 Aparato doméstico
PL11773296T PL2638778T3 (pl) 2010-11-08 2011-10-25 Urządzenie gospodarstwa domowego
EP11773296.6A EP2638778B1 (fr) 2010-11-08 2011-10-25 Appareil ménager

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010043537A DE102010043537A1 (de) 2010-11-08 2010-11-08 Haushaltsgerät
DE102010043537.6 2010-11-08

Publications (1)

Publication Number Publication Date
WO2012062568A1 true WO2012062568A1 (fr) 2012-05-18

Family

ID=44906062

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/068647 Ceased WO2012062568A1 (fr) 2010-11-08 2011-10-25 Appareil électroménager

Country Status (5)

Country Link
EP (1) EP2638778B1 (fr)
DE (1) DE102010043537A1 (fr)
ES (1) ES2651927T3 (fr)
PL (1) PL2638778T3 (fr)
WO (1) WO2012062568A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014201426A1 (de) * 2014-01-27 2015-07-30 BSH Hausgeräte GmbH Gargerät
US12501524B2 (en) 2020-03-19 2025-12-16 BSH Hausgeräte GmbH Domestic appliance having a door monitoring device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011089191A1 (de) * 2011-12-20 2013-06-20 E.G.O. Elektro-Gerätebau GmbH Haushaltsgerät zum Erwärmen von Lebensmitteln

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195884B (de) 1961-10-25 1965-07-01 Philips Nv Hochfrequenzofen fuer Hochfrequenzerhitzung mit Ultrahochfrequenzschwingungen
US4059742A (en) 1975-07-09 1977-11-22 Litton Systems, Inc. Microwave seal for combination cooking apparatus
US4166207A (en) 1977-05-31 1979-08-28 Whirlpool Corporation Microwave generating device--door seal
EP0247668A1 (fr) * 1986-05-23 1987-12-02 Laboratoires D'electronique Philips Four à micro-ondes comportant un dispositif de sécurité de fermeture de porte
GB2200748A (en) * 1987-01-16 1988-08-10 Europ Microwaves Limited Door alarm system
DE3840650A1 (de) * 1988-12-02 1990-06-07 Vogt Electronic Ag Elektronische tuersicherung fuer mikrowellengeraete
GB2243217A (en) * 1990-04-20 1991-10-23 Formula Systems Ltd Proximity detector for use on doors
EP0550897A2 (fr) * 1991-12-31 1993-07-14 Daewoo Electronics Co., Ltd Circuit de sécurité pour la porte d'un four à micro-ondes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195884B (de) 1961-10-25 1965-07-01 Philips Nv Hochfrequenzofen fuer Hochfrequenzerhitzung mit Ultrahochfrequenzschwingungen
US4059742A (en) 1975-07-09 1977-11-22 Litton Systems, Inc. Microwave seal for combination cooking apparatus
US4166207A (en) 1977-05-31 1979-08-28 Whirlpool Corporation Microwave generating device--door seal
EP0247668A1 (fr) * 1986-05-23 1987-12-02 Laboratoires D'electronique Philips Four à micro-ondes comportant un dispositif de sécurité de fermeture de porte
GB2200748A (en) * 1987-01-16 1988-08-10 Europ Microwaves Limited Door alarm system
DE3840650A1 (de) * 1988-12-02 1990-06-07 Vogt Electronic Ag Elektronische tuersicherung fuer mikrowellengeraete
GB2243217A (en) * 1990-04-20 1991-10-23 Formula Systems Ltd Proximity detector for use on doors
EP0550897A2 (fr) * 1991-12-31 1993-07-14 Daewoo Electronics Co., Ltd Circuit de sécurité pour la porte d'un four à micro-ondes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014201426A1 (de) * 2014-01-27 2015-07-30 BSH Hausgeräte GmbH Gargerät
US12501524B2 (en) 2020-03-19 2025-12-16 BSH Hausgeräte GmbH Domestic appliance having a door monitoring device

Also Published As

Publication number Publication date
DE102010043537A1 (de) 2012-05-10
PL2638778T3 (pl) 2018-03-30
ES2651927T3 (es) 2018-01-30
EP2638778B1 (fr) 2017-10-04
EP2638778A1 (fr) 2013-09-18

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