EP3477205A1 - Appareil électroménager - Google Patents

Appareil électroménager Download PDF

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Publication number
EP3477205A1
EP3477205A1 EP17001761.0A EP17001761A EP3477205A1 EP 3477205 A1 EP3477205 A1 EP 3477205A1 EP 17001761 A EP17001761 A EP 17001761A EP 3477205 A1 EP3477205 A1 EP 3477205A1
Authority
EP
European Patent Office
Prior art keywords
radiation
household appliance
electronic household
optical sensor
appliance according
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.)
Granted
Application number
EP17001761.0A
Other languages
German (de)
English (en)
Other versions
EP3477205B1 (fr
Inventor
Leszek Zatorski
Marcin Andrys
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.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
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.)
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Publication date
Application filed by Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Priority to EP17001761.0A priority Critical patent/EP3477205B1/fr
Publication of EP3477205A1 publication Critical patent/EP3477205A1/fr
Application granted granted Critical
Publication of EP3477205B1 publication Critical patent/EP3477205B1/fr
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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
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens

Definitions

  • the present invention relates to an electronic household appliance. in particular an electronic household appliance with a treatment room for treating goods.
  • Electronic household appliances having a treatment room for treating goods such as ovens and microwave ovens with a cooking chamber, extractor hoods with a fume hood, refrigerators and / or freezers with a refrigerator or freezer, dishwashers with a dishwasher, laundry treatment appliances with a washing or Drying room are usually exposed to contamination during their use and therefore regularly require a cleaning of the treatment room in order to ensure the efficiency of treatment of the goods in the treatment room in the long term.
  • the user of the household appliance is recommended to clean the treatment room at regular intervals of, for example, three months.
  • it is also known to estimate the degree of soiling of the treatment room on the basis of the number and type of treatment processes actually performed and to determine on this basis a time for the next cleaning of the treatment room cf. DE 10 2014 217 636 A1 ).
  • the cleaning of the treatment room can then be done manually by the user or by a self-cleaning device of the household appliance (cf., eg DE 10 2008 025 294 B4 ) respectively.
  • a device for evaluating the dirt condition of oven chambers which uses a cracking cell in which the fats or contaminants from the baking process are cracked in the course of an exothermic reaction.
  • the cracking energy released in this reaction is measured to deduce the amount of cracked contaminants from the baking process and the amount of contaminants deposited on the walls.
  • the invention has for its object to provide an electronic home appliance with a treatment room for treating goods, in which an improved cleaning of the treatment room is possible.
  • the electronic domestic appliance of the invention comprises a treatment room for treating goods, which is at least partially bounded by at least one wall, and an optical sensor for detecting an actual degree of soiling of the treatment room provided on the at least one wall of the treatment room.
  • the invention it is proposed to detect the actual degree of soiling of the treatment space with the aid of an optical sensor on a wall of the treatment room.
  • an optical sensor on a wall of the treatment room allows a simple, compact and inexpensive construction of the detection device and permanently reliable and accurate detection of the degree of contamination.
  • the construction according to the invention can also be easily retrofitted into existing household appliances.
  • the electronic household appliance is in particular a (baking) oven, a microwave oven, an extractor hood, a refrigerator and / or freezer, a dishwasher, a laundry treatment appliance (washing machine, tumble dryer, etc.) or the like.
  • the treatment chamber of the electronic household appliance is in particular a cooking chamber, an open space below the extractor hood, a refrigerator or freezer compartment, a Dish, a washing or drying room or the like.
  • the treatment room is bounded by at least one wall, ie by one or more walls.
  • the treatment room is at least partially limited by the at least one wall, ie it is, for example, a completely closed or closable room or a one or more sides open space.
  • the optical sensor should be provided on the at least one wall of the treatment room.
  • at least one component of the optical sensor system is arranged in the region of a wall (that is to say in particular installed in the wall or on the side of the wall facing away from the treatment space). It is also possible for a plurality of components of the optical sensor system to be arranged on a wall or on different walls of the treatment space.
  • the electronic household appliance further comprises an output device for (optical or acoustic) outputting information regarding a cleaning requirement of the treatment room based on the degree of contamination detected by the optical sensor system to a user of the electronic household appliance.
  • the output device can be integrated in particular in a control panel of the household appliance.
  • the electronic household appliance is further equipped with a self-cleaning device for automatic cleaning of the treatment room.
  • the self-cleaning device is preferably equipped with a pyrolysis function.
  • the electronic household appliance preferably further comprises a controller for driving the self-cleaning device.
  • This activation preferably takes place automatically as a function of the degree of contamination detected by the optical sensor system and / or via a manual activation by a user of the electronic household appliance via a cleaning command entered by means of an operating device.
  • the self-cleaning device is automatically activated by the controller at an appropriate time after use of the treatment room after the optical sensor has detected a contamination level of the treatment room requiring cleaning, or manually activated by a user after he has been informed by means of the output device about a cleaning requirement of the treatment room.
  • the optical sensor system has at least one radiation source for emitting electromagnetic radiation and at least one radiation detector for detecting electromagnetic radiation
  • the at least one wall of the treatment space has at least one plate which is at least partially radiation-permeable to the electromagnetic radiation used by the optical sensor system , which is at least partially exposed to contamination when using the electronic household appliance.
  • the basic shape of the radiation-transmissive plate is basically arbitrary; in particular, it can be flat or completely or partially curved; in particular, it can be substantially rectangular or circular.
  • the basic design of the plate is basically arbitrary, it can be designed in particular as a rigid or flexible plate element or as a film element.
  • the at least one radiation-transmissive plate is a window in a wall of the treatment space.
  • the at least radiation-permeable plate is a luminaire cover of a lighting of the treatment room. If the optical sensor system has a plurality of radiation-permeable plates, these can be designed according to one of these embodiments or in different embodiments.
  • the embodiment with the luminaire cover as a radiation-permeable plate offers the advantage that an already present in the household appliance component, which is tailored to the use of the respective household appliance, can be used for the optical sensor.
  • the radiation source and the radiation detector are arranged on the same side of a radiation-transmissive plate.
  • the radiation detector preferably detects an electromagnetic radiation emitted by the radiation source and reflected at the radiation-transmissive plate and / or a radiation reflector in the treatment space.
  • the reflectance of the radiation-transmissive plate is influenced by the degree of contamination of the plate, so that it can be concluded from the detected reflected radiation on the actual degree of contamination of the treatment room.
  • the radiation source and the radiation detector are arranged on different sides of a radiation-transmissive plate.
  • the radiation detector preferably detects an electromagnetic radiation emitted by the radiation source and transmitted through the radiation-transmissive plate.
  • the radiation source can preferably be arranged behind a first radiation-permeable plate and the radiation detector behind a second radiation-permeable plate, so that the radiation detector preferably detects an electromagnetic radiation emitted by the radiation source and transmitted through the two radiation-transmissive plates.
  • the degree of transmission of the radiation-transmissive plates is influenced by the degree of soiling of the plates, so that it is possible to deduce from the detected transmitted radiation the actual degree of soiling of the treatment space.
  • the radiation detector is preferably configured to detect an intensity, a wavelength, a wavelength spectrum, a detection location and / or a detection location distribution of the electromagnetic radiation.
  • the radiation source is preferably designed to emit visible light, laser light, infrared radiation or UV radiation of one wavelength or several wavelengths.
  • the electronic household appliance also has an operating device via which a user of the electronic household appliance can selectively activate or deactivate the optical sensor system.
  • This operating device is preferably integrated in a control panel of the household appliance.
  • the operating device preferably contains further input options for driving the household appliance.
  • the optical sensor system is configured or controllable to detect the actual degree of contamination of the treatment room at regular intervals, after each use of the treatment room and / or activation by a user of the electronic household appliance.
  • the optical sensor system is designed to detect the actual degree of soiling of the treatment room at several points of the treatment room.
  • the optical sensor system preferably contains a plurality of radiation sources and / or a plurality of radiation detectors and / or a plurality of radiation-transmissive plates at different locations on the treatment chamber of the electronic household appliance.
  • the degree of contamination is monitored in three to five different areas of the treatment room.
  • the designed as an oven electronic appliance 10 has a cooking space as a treatment room 12 for cooking food.
  • This cooking chamber 12 is bounded by a device wall 14, an intermediate wall 16 for separating electronic components from the cooking chamber, and a device door 18 for closing an access opening to the cooking chamber, as well as a floor (not shown) and a ceiling (not shown).
  • the cooking chamber 12 for example, designed as a heater or grill unit 20 for cooking food in the cooking chamber 12 is provided.
  • This unit 20 is controlled by a controller 22.
  • the controller 22 is connected to a control panel, which is visible to the user and accessible to a device wall 14.
  • the control panel has in particular an operating device 24 with input elements and display elements.
  • an output device 26 is provided in the control panel for the optical and / or acoustic output of information regarding the cleaning requirement of the cooking chamber 12.
  • the controller 22 is further connected to an optical sensor system 30, which is arranged behind a radiation-transmissive plate 28 in the intermediate wall 16.
  • This optical sensor 30 is designed to detect the actual degree of soiling of the cooking chamber 12.
  • the controller 22 then outputs depending on the detection result of the optical sensor 30 via the output device 26 corresponding information regarding the cleaning needs of the cooking chamber 12 to the user.
  • the optical sensor 30 can detect the degree of soiling of the cooking chamber 12 at one point or preferably at several points in / on the cooking chamber 12. The detection of the degree of contamination by the optical sensor 30, for example, at regular intervals, after completion of a cooking process in the cooking chamber 12 and / or in an individual activation by the user. Optionally, the optical sensor 30 can also be completely deactivated by the user by means of the operating device 24.
  • the user via the output device 26, an existing cleaning needs displayed, he can clean the cooking chamber 12 manually. Since the cleaning requirement is determined by means of the optical sensor 30 based on the actual degree of contamination of the cooking chamber 12, unnecessary or late cleaning of the cooking chamber 12 can be avoided.
  • a self-cleaning device 32 is additionally provided in the cooking chamber 12, with which the cooking chamber 12 can be cleaned automatically.
  • This self-cleaning device 32 can be automatically activated by the controller 22 if the optical sensor 30 has determined a cleaning requirement of the cooking chamber 12.
  • the self-cleaning device 32 can be manually activated by the user via the operating device 24, in particular if this has been informed via the output device 26 about a need for cleaning the cooking chamber 12.
  • the optical sensor system 30 has a first radiation-permeable plate 28a, which is provided as a window in a first intermediate wall 16a of the oven 10, and a second radiation-permeable plate 28b, which is provided as a window in a second intermediate wall 16b of the oven 10.
  • the two intermediate walls 16a, 16b and, correspondingly, the two radiation-permeable plates 28a, 28b are located on opposite sides of the cooking chamber 12.
  • the optical sensor 30 has a radiation source 34.
  • the radiation source 34 is designed, for example, as a light-emitting diode (group) or white-light LED and emits light in the visible wavelength range or infrared light.
  • the optical sensor 30 has a radiation detector 36.
  • the radiation detector 36 is designed for example as a photodiode, photoresistor or CCD chip and can detect electromagnetic radiation in the wavelength range of the radiation emitted by the radiation source 34.
  • the radiation detector 36 detects the radiation emitted by the radiation source 34 and transmitted through the first radiation-transmissive plate 28a in the first intermediate wall 16a and then passed through the cooking chamber 12 and finally transmitted through the second radiation-transmissive plate 28b in the second intermediate wall 28b.
  • the radiation intensity of the detected radiation is evaluated.
  • the intermediate walls 16a, 16b and the plates 28a, 28b provided therein are contaminated to different degrees, which influences the transmittance of the two plates 28a, 28b and the scattering on the two plates 28a, 28b. The stronger the cooking chamber 12 and the two plates 28a, 28b are contaminated, the less radiation passes from the radiation source 34 to the radiation detector 36.
  • the optical sensor system 30 has a radiation-permeable plate 28, which is provided as a window in the intermediate wall 16 of the oven 10. Behind this radiation-transmissive plate 28, ie on its side facing away from the cooking chamber 12, the optical sensor 30 has a radiation source 34 and a radiation detector 36.
  • the radiation source 34 is designed, for example, as a light-emitting diode (group) and emits light in the visible wavelength range or infrared light.
  • the radiation detector 36 is designed, for example, as a photodiode or CCD chip and can detect electromagnetic radiation in the wavelength range of the radiation emitted by the radiation source 34.
  • the radiation detector 36 detects the radiation emitted by the radiation source 34 and reflected on the radiation-transmissive plate 28 in the intermediate wall 16, in particular on its side facing the cooking chamber 12.
  • the radiation intensity and / or the detection location of the detected radiation can be evaluated.
  • the intermediate wall 16 and the plate 28 provided therein are contaminated to different degrees, which influences the reflectance on the plate 28. The more the cooking chamber 12 and the plate 28 are contaminated, the more radiation is reflected back from the dirty side of the plate 28 in the direction of the radiation detector 36.
  • the optical sensor system 30 has a radiation-transmissive plate 28, which is provided as a window in the intermediate wall 16 of the oven 10, and a radiation reflector 38, which is provided on a device wall 14 opposite the intermediate wall 16 or the plate 28.
  • the optical sensor 30 has a radiation source 34 and a radiation detector 36.
  • the radiation source 34 is designed, for example, as a light-emitting diode (group) and emits light in the visible wavelength range or infrared light.
  • the radiation detector 36 is designed, for example, as a photodiode or CCD chip and can detect electromagnetic radiation in the wavelength range of the radiation emitted by the radiation source 34.
  • the radiation detector 36 detects the radiation emitted by the radiation source 34 through the radiation-transmissive plate 28 in the intermediate wall 16 transmitted and passed through the cooking chamber 12, then reflected at the radiation reflector 38 on the device wall 14 and run back through the cooking chamber 12, and finally again through the radiation-transmissive plate 28 in the intermediate wall 28 transmitted radiation.
  • the radiation intensity of the detected radiation is evaluated.
  • 16 and the plate 28 and the radiation reflector 38 are different levels of contamination, which affects the transmittance of the plate 28 and the reflectance of the radiation reflector 38. The more the cooking chamber 12, the plate 28 and the radiation reflector are contaminated, the less radiation is reflected back from the dirty radiation reflector 38 through the plate 28 to the radiation detector 36.
  • Fig. 5 is different from the one in Fig. 2 illustrated embodiment in particular in that instead of the radiation-transmissive plate 28 in the first partition wall 16a, a lamp cover 29 is provided an existing anyway in the home appliance lighting of the cooking chamber 12 and the light source 40 of this illumination serves as a radiation source.
  • the light cover 29 is basically sufficiently temperature-resistant and tight, so that no adjustments have to be made for the optical sensor 30 in this regard.
  • the optical sensor 30 and its operation correspond to the embodiment of Fig. 2 ,
  • Fig. 6 is different from the one in Fig. 3 illustrated embodiment in particular in that instead of the radiation-permeable plate 28 in the intermediate wall 16, a lamp cover 29 is provided an existing anyway in the home appliance lighting the cooking chamber 12.
  • the light cover 29 is basically sufficiently temperature-resistant and tight, so that no adjustments have to be made for the optical sensor 30 in this regard.
  • the radiation source 34 and the radiation detector 36 are arranged next to the light source 42 of the illumination behind this luminaire cover 29.
  • the optical sensor 30 and its operation correspond to the embodiment of Fig. 3 ,
  • Fig. 7 is different from the one in Fig. 5 illustrated embodiment in particular in that the light source 42 of the illumination is not used as a radiation source of the optical sensor, but that the radiation source 34 (eg a laser diode) of the optical sensor 30 in addition to this illumination behind the lamp cover 29 is arranged.
  • the optical sensor 30 and its operation correspond to the embodiment of Fig. 5 ,
  • the radiation detector 36 may also detect a wavelength spectrum, if appropriate together with an additionally provided prism, since contamination absorbs different wavelengths differently or reflected so that the absence of a particular wavelength in the detected radiation can be an indication of contamination.
  • UV lamp as a radiation source in order to detect, for example, in a refrigerator by means of a corresponding radiation detector, for example, luminescent bacteria.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electric Ovens (AREA)
EP17001761.0A 2017-10-25 2017-10-25 Appareil électroménager Active EP3477205B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17001761.0A EP3477205B1 (fr) 2017-10-25 2017-10-25 Appareil électroménager

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17001761.0A EP3477205B1 (fr) 2017-10-25 2017-10-25 Appareil électroménager

Publications (2)

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EP3477205A1 true EP3477205A1 (fr) 2019-05-01
EP3477205B1 EP3477205B1 (fr) 2020-04-22

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EP17001761.0A Active EP3477205B1 (fr) 2017-10-25 2017-10-25 Appareil électroménager

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019213485A1 (de) * 2019-09-05 2021-03-11 BSH Hausgeräte GmbH Haushalts-Mikrowellengerät mit Mikrowellendom
WO2022078839A1 (fr) * 2020-10-14 2022-04-21 Miele & Cie. Kg Procédé de détermination du temps de nettoyage d'une chambre de cuisson d'un appareil de cuisson

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10128024A1 (de) * 2001-06-08 2003-01-02 Bsh Bosch Siemens Hausgeraete Verfahren zur Steuerung der Selbstreinigung eines Gargeräts sowie zugehöriges Gargerät
DE69912507T2 (de) 1998-04-10 2004-09-23 Compagnie Européenne pour l'Equipement Menager "CEPEM" Vorrichtung zur Beurteilung des Schmutzzustandes von Backofenräumen
KR20110011817A (ko) * 2009-07-29 2011-02-09 엘지전자 주식회사 오염 감지부를 포함한 오븐 레인지
DE102008025294B4 (de) 2008-05-27 2012-06-21 Rational Ag Verfahren zum Reinigen eines Garraums
DE102012218002A1 (de) * 2012-10-02 2014-04-03 BSH Bosch und Siemens Hausgeräte GmbH Gargerät und Verfahren zum Betreiben eines Gargeräts
WO2014102074A1 (fr) * 2012-12-26 2014-07-03 Arcelik Anonim Sirketi Four à pyrolyse
DE102014217636A1 (de) 2014-09-03 2016-03-03 BSH Hausgeräte GmbH Betreiben eines Speisenbehandlungsgeräts
DE102014116709A1 (de) * 2014-11-14 2016-05-19 Rational Aktiengesellschaft Gargerät sowie Verfahren zur Bestimmung des Verschmutzungsgrades eines Gargeräts

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69912507T2 (de) 1998-04-10 2004-09-23 Compagnie Européenne pour l'Equipement Menager "CEPEM" Vorrichtung zur Beurteilung des Schmutzzustandes von Backofenräumen
DE10128024A1 (de) * 2001-06-08 2003-01-02 Bsh Bosch Siemens Hausgeraete Verfahren zur Steuerung der Selbstreinigung eines Gargeräts sowie zugehöriges Gargerät
DE102008025294B4 (de) 2008-05-27 2012-06-21 Rational Ag Verfahren zum Reinigen eines Garraums
KR20110011817A (ko) * 2009-07-29 2011-02-09 엘지전자 주식회사 오염 감지부를 포함한 오븐 레인지
DE102012218002A1 (de) * 2012-10-02 2014-04-03 BSH Bosch und Siemens Hausgeräte GmbH Gargerät und Verfahren zum Betreiben eines Gargeräts
WO2014102074A1 (fr) * 2012-12-26 2014-07-03 Arcelik Anonim Sirketi Four à pyrolyse
DE102014217636A1 (de) 2014-09-03 2016-03-03 BSH Hausgeräte GmbH Betreiben eines Speisenbehandlungsgeräts
DE102014116709A1 (de) * 2014-11-14 2016-05-19 Rational Aktiengesellschaft Gargerät sowie Verfahren zur Bestimmung des Verschmutzungsgrades eines Gargeräts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019213485A1 (de) * 2019-09-05 2021-03-11 BSH Hausgeräte GmbH Haushalts-Mikrowellengerät mit Mikrowellendom
US12550232B2 (en) 2019-09-05 2026-02-10 BSH Hausgeräte GmbH Domestic microwave appliance having a dome-shaped microwave shield
WO2022078839A1 (fr) * 2020-10-14 2022-04-21 Miele & Cie. Kg Procédé de détermination du temps de nettoyage d'une chambre de cuisson d'un appareil de cuisson

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