EP2794973A1 - Dispositif permettant d'évaluer l'état hygiénique d'un appareil ménager à circulation d'eau, appareil ménager de ce type et procédé permettant d'évaluer l'état hygiénique d'un appareil ménager correspondant - Google Patents

Dispositif permettant d'évaluer l'état hygiénique d'un appareil ménager à circulation d'eau, appareil ménager de ce type et procédé permettant d'évaluer l'état hygiénique d'un appareil ménager correspondant

Info

Publication number
EP2794973A1
EP2794973A1 EP12813804.7A EP12813804A EP2794973A1 EP 2794973 A1 EP2794973 A1 EP 2794973A1 EP 12813804 A EP12813804 A EP 12813804A EP 2794973 A1 EP2794973 A1 EP 2794973A1
Authority
EP
European Patent Office
Prior art keywords
domestic appliance
container
tub
water
assessing
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
EP12813804.7A
Other languages
German (de)
English (en)
Other versions
EP2794973B1 (fr
Inventor
Hans Eglmeier
Hartmut Schaub
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
Publication of EP2794973A1 publication Critical patent/EP2794973A1/fr
Application granted granted Critical
Publication of EP2794973B1 publication Critical patent/EP2794973B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/20—Parameters relating to constructional components, e.g. door sensors
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/43—Control of cleaning or disinfection of washing machine parts, e.g. of tubs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/07—Cleaning beverage-dispensing apparatus
    • B67D2001/075—Sanitising or sterilising the apparatus
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply

Definitions

  • the invention relates to a device for assessing a hygiene state of a water-conducting household appliance, in particular a domestic appliance for the care of
  • the invention also relates to a corresponding water-conducting domestic appliance as well as a method for assessing a
  • Hygiene state of a water-conducting household appliance in particular a household appliance for the care of laundry.
  • a water-bearing household appliance such as a washing machine, other washing equipment for the care and / or cleaning of laundry items or dishes of a coffee machine or other beverage preparation machine, it may come under specific installation and / or operating conditions to form a biofilm.
  • a biofilm can, for example, in the Einticianschale a
  • Washing machine can be easily recognized by a user and it can be a
  • Washing machine by a user virtually not be noticed and is only noticed when an unpleasant odor has arisen.
  • Water supply in particular a hose, and / or a container, in particular a tub, and an electrical detection device.
  • Detection device is coupled to the water supply and / or the container, in particular tub, and it is designed to perform a capacitance measurement. It is also used to assess a state of hygiene of the
  • a water supply is understood to mean one or more components which can lead or guide water or an aqueous solution.
  • the device ensures a very robust method of measurement, especially in a humid environment.
  • the detection device has two conductive electrodes which are connected to the water guide and / or the container, in particular the Lye containers are arranged. These are in particular plate-like.
  • the capacitive measurement can be carried out particularly advantageous. In addition, a corresponding mechanically stable attachment is guaranteed.
  • the electrodes are preferably arranged on an outer side of the water guide and / or the container, in particular on a rear wall of the suds container. As a result, they are accessible for maintenance and the like. Furthermore, this arrangement in a domestic appliance for the care of laundry no space between the tub and an existing drum for receiving
  • the electrodes are arranged adjacent to a bearing of a tub. This is a particularly advantageous place, as in the area of the bearing of the tub very often unwanted impurities form. The detection of this contamination is thus ensured very quickly.
  • the detection device is designed for the assessment of a property of a biofilm formed on the water guide and / or on the container, in particular on the tub, depending on a measured capacitance.
  • a characterization of a biofilm formed on the water guide and / or on the container, in particular on the suds container can be carried out as a function of the measurement frequency, depending on a spectrum of the capacitance measured by the detection device.
  • the detection device has a control unit, whereby a defined spectrum of the measurement frequency can be generated.
  • a characteristic characterizing the biofilm is the composition of the biofilm and / or the thickness of the biofilm and / or the volume density of the biofilm.
  • the device ensures that a simple, robust and inexpensive way of measuring moisture-containing coverings without direct contact with this medium can be carried out.
  • Biofilm quality allows a very fast and reliable statement about the extent to which the biofilm has already developed and to what extent more or less comprehensive cleaning measures are required.
  • the phenomenon is exploited that biofilms remain wet for a while after being wetted with water and therefore are electrically conductive.
  • This conductivity can be determined by the capacitance between the two conductive plates representing the electrodes.
  • the measured capacity allows conclusions to be drawn on the coherently wetted area and thus on the areal density of the biofilm.
  • the images of a spectrum that is, the measurement of the capacitance as a function of the measurement frequency, also allows statements about additional properties, such as the type and / or the thickness and / or the volume density of the biofilm. Low frequencies up to a few megahertz can be included in the frequency spectrum and used for the measurement.
  • the control unit which may include a microprocessor, provided that this frequency control and
  • the invention relates to a water-conducting domestic appliance, in particular a domestic appliance for the care and / or cleaning of laundry items or dishes, such as a washing machine or a dishwasher, or a
  • Beverage preparation machine with a device according to the invention or an advantageous embodiment thereof.
  • the invention relates to a method for assessing a hygiene state of a water-conducting domestic appliance, in which an electrical detection device of the domestic appliance with a water supply and / or a container, in particular a tub, the domestic appliance is electrically coupled and dependent on a capacitance measurement by the detection device of the hygiene state of the
  • Fig. 1 is a schematic perspective view of an embodiment of a domestic appliance according to the invention
  • FIG. 2 is a schematic rear view of a tub of a device according to the invention with a detection device
  • Fig. 3 is a schematic sectional view through the tub according to
  • Fig. 1 is a front view of a washing machine 1 is shown.
  • the washing machine 1 comprises a drum 2 for receiving the laundry items.
  • the drum 2 which is rotatable about an axis perpendicular to the plane of the figure, has a front loading opening 3, via which the items of laundry can be introduced into the drum 2 and taken out.
  • the washing machine 1 comprises a tub 4, which surrounds the drum 2 in regions.
  • the washing machine 1 moreover also comprises an induction bowl 5 and an operating device 6.
  • the washing machine 1 comprises a device 7, which is designed to assess a hygiene state of the tub 4.
  • the device 7 will be explained in more detail with reference to FIGS. 2 and 3.
  • Fig. 2 is a schematic view of the tub 4 shown from the rear. It is thus a rear wall 8, which is opposite to the feed opening 3 shown.
  • the Rear wall 8 is beyond the outside, which faces away from an inner volume 9 of the drum 2 and also of the tub 4.
  • the device 7 comprises in addition to the tub 4, an electrical detection device 10. This is designed for capacitance measurement. It comprises two plates as electrodes 1 1 and 12, which are formed on the rear wall 8.
  • the plate-like electrodes 1 1 and 12 are connected via signal lines 13 and 14 to a control and evaluation unit 15.
  • the capacitance measurement by the detection device 10 makes it possible to make a statement about the hygiene state of the tub 4, in particular about the presence of a biofilm 16 (FIG. 3), as it is on an inner side 17 of the tub 4, in particular in the region of a bearing 18 can train.
  • a biofilm 16 FIG. 3
  • the unit 15 includes a microprocessor 19. The capacitance measurement conclusions on the contiguous wetted surface and thus on the
  • Material composition of the biofilm 16 and / or the thickness of the biofilm 16 and / or the volume density of the biofilm 16 can be determined.
  • the described embodiment can be applied mutatis mutandis to other water-bearing household appliances.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

L'invention concerne un dispositif (7) permettant d'évaluer l'état hygiénique d'un appareil ménager à circulation d'eau (1), en particulier d'un appareil ménager destiné à entretenir et/ou à nettoyer du linge ou de la vaisselle, comprenant un système de circulation d'eau et/ou un contenant (4) et un dispositif de détection électrique (10) couplé au système de circulation d'eau et/ou au contenant (4) et conçu pour évaluer l'état hygiénique du système de circulation d'eau et/ou du contenant (4), en fonction d'une mesure de capacité. L'invention concerne également un appareil ménager à circulation d'eau (1) et un procédé permettant d'évaluer l'état hygiénique d'un appareil ménager à circulation d'eau (1).
EP12813804.7A 2011-12-21 2012-12-18 Dispositif d'évaluation du état d'hygiène d'un appareil ménager de transport de l'eau et un tel appareil, ainsi qu'une méthode d'évaluation d'un état d'hygiène d'un appareil ménager correspondant Active EP2794973B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011089364A DE102011089364A1 (de) 2011-12-21 2011-12-21 Vorrichtung zur Beurteilung eines Hygienezustands eines wasserführenden Hausgeräts sowie ein derartiges Hausgerät als auch ein Verfahren zum Beurteilen eines Hygienezustands eines entsprechenden Hausgeräts
PCT/EP2012/075872 WO2013092538A1 (fr) 2011-12-21 2012-12-18 Dispositif permettant d'évaluer l'état hygiénique d'un appareil ménager à circulation d'eau, appareil ménager de ce type et procédé permettant d'évaluer l'état hygiénique d'un appareil ménager correspondant

Publications (2)

Publication Number Publication Date
EP2794973A1 true EP2794973A1 (fr) 2014-10-29
EP2794973B1 EP2794973B1 (fr) 2017-03-01

Family

ID=47557048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12813804.7A Active EP2794973B1 (fr) 2011-12-21 2012-12-18 Dispositif d'évaluation du état d'hygiène d'un appareil ménager de transport de l'eau et un tel appareil, ainsi qu'une méthode d'évaluation d'un état d'hygiène d'un appareil ménager correspondant

Country Status (6)

Country Link
EP (1) EP2794973B1 (fr)
CN (1) CN104185700B (fr)
DE (1) DE102011089364A1 (fr)
IN (1) IN2014KN01213A (fr)
RU (1) RU2570502C1 (fr)
WO (1) WO2013092538A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015204692A1 (de) * 2015-03-13 2016-09-15 BSH Hausgeräte GmbH Verfahren zur Bestimmung eines Hygienegrades einer Waschmaschine mit einem Impedanzsensor sowie hierzu geeignete Waschmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518174A (en) * 1967-08-10 1970-06-30 Inoue K Method and apparatus for purification of water containing organic contaminants
JPS607513B2 (ja) * 1977-05-18 1985-02-25 株式会社日立製作所 全自動洗たく機
GB2102928A (en) * 1981-07-22 1983-02-09 Philips Electronic Associated Dryness sensing device for a laundry drier
DE19620512A1 (de) * 1996-05-22 1997-11-27 Miele & Cie Programmgesteuerte Waschmaschine
US6394111B1 (en) * 1997-06-11 2002-05-28 Ethicon, Inc. Detection of cleanliness of a medical device during a washing process
CN2589469Y (zh) * 2002-07-10 2003-12-03 张霖 全自动多功能无菌饮水机
KR100930889B1 (ko) * 2002-11-22 2009-12-10 엘지전자 주식회사 세탁기 조세정 방법
EP1441056A1 (fr) * 2003-01-22 2004-07-28 Whirlpool Corporation Machine à laver
US20080092928A1 (en) * 2006-10-19 2008-04-24 Whirlpool Corporation Method and Apparatus for Treating Biofilm in an Appliance
EP2108726A3 (fr) * 2009-06-29 2009-10-21 V-Zug AG Lave-linge doté d'un affichage d'hygiène

Also Published As

Publication number Publication date
EP2794973B1 (fr) 2017-03-01
WO2013092538A1 (fr) 2013-06-27
CN104185700A (zh) 2014-12-03
IN2014KN01213A (fr) 2015-10-16
RU2570502C1 (ru) 2015-12-10
CN104185700B (zh) 2017-05-24
DE102011089364A1 (de) 2013-06-27

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