EP4119716A1 - Elektrodenvorrichtung, verfahren zur herstellung davon und haushaltsgerät damit - Google Patents

Elektrodenvorrichtung, verfahren zur herstellung davon und haushaltsgerät damit Download PDF

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Publication number
EP4119716A1
EP4119716A1 EP21185479.9A EP21185479A EP4119716A1 EP 4119716 A1 EP4119716 A1 EP 4119716A1 EP 21185479 A EP21185479 A EP 21185479A EP 4119716 A1 EP4119716 A1 EP 4119716A1
Authority
EP
European Patent Office
Prior art keywords
electrode
carrier
electrode device
household appliance
midline
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.)
Pending
Application number
EP21185479.9A
Other languages
English (en)
French (fr)
Inventor
Damian Geberle
Jaroslaw GRABOWICZ
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to EP21185479.9A priority Critical patent/EP4119716A1/de
Publication of EP4119716A1 publication Critical patent/EP4119716A1/de
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4295—Arrangements for detecting or measuring the condition of the crockery or tableware, e.g. nature or quantity
    • 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
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • D06F2103/10—Humidity expressed as capacitance or resistance
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 

Definitions

  • the invention relates to an electrode device including at least one electrically conductive electrode fixed to an electrically insulating carrier, the electrode extended along a midline and having a first end and a second end, the second end including a first tab for mounting an electrical connector.
  • the invention also relates to a method for making such electrode device.
  • the invention further relates to a household appliance including such device.
  • Document EP 2 695 989 A1 discloses an electrode device of the generic type defined above.
  • the electrode device disclosed by this document includes two electrodes mounted adjacent to each other and is applied in a laundry dryer for use in measuring an electrical conductance of pieces of laundry being dried for application in process control by monitoring the electrical conductance as it decreases as pieces of laundry are being dried and thereby lose their content of water which is the primary material that makes the laundry electrically conductive.
  • Document KR 10-0508341 B1 discloses an electrode device including two electrodes applied in a laundry dryer and arranged adjacent to each other in a staggering fashion while maintaining a predetermined distance between each other.
  • the electrodes are arranged at a surface inclined towards a drum wherein laundry to be dried is to be placed.
  • Electrodes belonging to the assembly are sensor strips secured directly to an outlet grill provided for exiting process air and may be engaged by pieces of laundry being dried. Each sensor strip pivotally engages at one end with the grill and has an interference friction fit with the grill at an opposite end.
  • a household appliance is an appliance determined for use in operating a private household to fulfil a specific and predetermined material purpose.
  • a household appliance may be a laundry care machine such as a laundry dryer or a washer-dryer, or a dishwasher, or a cooling appliance such as a refrigerator or a freezer, or a heating appliance such as a water heater or a climatization device, all eventually equipped with a heat pump for drying, cooling, or heating purposes.
  • an electrode device for measuring electrical conductivity in a household appliance requires great accuracy to ensure proper cooperation between the electrode device and a controller which conventionally applies the electrodes for measurements and evaluates the conductivity as an important input for process control.
  • the accuracy must be provided in the dimensions of the electrodes themselves as well as in their placement and fixture in the household appliance, to ensure that measurements obtained with the electrode device are proper and reproducible.
  • the fixture of the electrodes in the electrode device must be firm and durable, as the normal use of the electrodes requires them to engage moving items of considerable weights on purpose of making the required conductivity measurements within periods of normal use extending to ten years and beyond. Yet, there are also motivations for keeping costs of household appliances as low as possible and avoiding excess expenditure of materials and assembly time.
  • an object of the invention to provide an electrode device of the generic type as defined above which allows to achieve better accuracy in production and assembly, improved durability, and easier assembly. It is also an object of the invention to provide a method for making such electrode device and a household appliance including such electrode device.
  • the present invention provides an electrode device of the generic type as defined in the generic part of the respective independent claim attached which also includes the features of the characterizing part of said independent claim.
  • the present invention also provides a method for making such electrode device and a household appliance including such electrode device as defined in the respective independent claim attached.
  • a first aspect of the present invention provides, as a solution to the problem as defined above, an electrode device including at least one electrically conductive electrode fixed to an electrically insulating carrier, the electrode extended along a midline and having a first end and a second end, the second end including a first tab for mounting an electrical connector.
  • the first end includes a latch inserted into a corresponding groove in the carrier and the second end includes a register hole registered with a corresponding register pin formed on a flexible second tab formed at the carrier.
  • a second aspect of the present invention provides, as a solution to the problem as defined above, a method for making the electrode device according to the first aspect of the invention, the method comprising the following steps:
  • a third aspect of the present invention provides, as a solution to the problem as defined above, a household appliance for treating items having an electrical conductance, the household appliance including an electrode device according to the first aspect of the invention and configured for contacting the items to be treated to measure the electrical conductance.
  • the electrode is fitted to the carrier by the latch at its first end and by the register pin inserted into its register hole at the second end so as to be irretrievable by any action within normal use, without extraction of the electrode device from the appliance that it has been associated to ands without application of specific tools that may eventually break the carrier or an electrode.
  • the electrode device is easily assembled from its components and easily installed.
  • the components of the electrode device which include the carrier and the at least one electrode may be made with ease and applying conventional and reliable technologies such as stamping of metal sheet for making an electrode and injection moulding for making the carrier.
  • the electrode device thus obtained is firm and durable in normal use and can stand all reasonably expectable strain without deformation and decomposition over a very long time period.
  • the household appliance may be a laundry care machine such as a laundry dryer or a washer-dryer, or a dishwasher, or a cooling appliance such as a refrigerator or a freezer, or a heating appliance such as a water heater or a climatization device, all eventually equipped with a heat pump for drying, cooling, or heating purposes.
  • a laundry care machine such as a laundry dryer or a washer-dryer, or a dishwasher
  • a cooling appliance such as a refrigerator or a freezer
  • a heating appliance such as a water heater or a climatization device
  • the second end includes a U-shaped bend which is bent around the second tab.
  • Such U-shaped bend may considerably ease access to the second tab for fixing a connector to a controller device for applying the electrode to conductivity measurement.
  • the U-shaped bend is composed of two essentially orthogonal bends which further eases production.
  • the midline is parallel to a main plane defined by the carrier. More preferred the midline is curved. Thereby the electrode may be aligned to the trajectory of moving items whose conductivity shall be measured, and the fixture of the electrode in the carrier is made easy.
  • the electrode includes a stamped elevation extending orthogonally to the main plane and along the midline.
  • Such elevation greatly increases the firmness of the electrode and further ensures that the electrode remains without deformation under regular use.
  • the latch and the second end are flat sections of the electrode and oriented parallel to the main plane. This makes the electrode easy to integrate to the carrier, and connect to a controller device, while also leaving some elasticity which may be practically applied in integrating the electrode device.
  • Even more preferred the stamped elevation projects away from the carrier. Thereby the elevation exposes itself better to items to be contacted, particularly for applying the electrode to conductivity measurements.
  • the electrode device is configured to be applied in a laundry care machine for measuring an electric resistance of pieces of laundry to be treated.
  • the at least one electrode is two electrodes fixed to the carrier.
  • the electrode device provides all electrical contacts which are necessary for a conductivity measurement on one carrier.
  • Such electrode device is easy to make reproducibly, and easy to integrate reproducibly into a household appliance.
  • the household appliance has a controller connected to the at least one electrode and configured to measure the electrical conductivity.
  • the household appliance is configured for treating items which are pieces of laundry, the household appliance including a rotatable drum for holding the pieces of laundry, the drum having an opening which is borne against a bearing shield, and the carrier forms a component of the bearing shield projecting into the opening and exposing the at least one electrode into the drum.
  • the household appliance is configured as a laundry drying machine. Still more preferred the household appliance is configured as a laundry dryer.
  • an electrically conductive electrode 3, electrode 3 to be fixed to an electrically insulating carrier 2 for forming an electrode device 1 as shown in Fig. 3 is extended along a midline 4 and has a first end 5 and a second end 7.
  • Second end 7 includes a first tab 8 for mounting an electrical connector 19 (see Fig. 9 for related details).
  • First end 5 includes a latch 6 to be inserted into a corresponding groove 11 in the carrier 2, as shown in detail in Fig. 4 .
  • Second end 7 includes a register hole 10 to be registered with a corresponding register pin 13 formed on a flexible second tab 12 formed at carrier 2 and as shown in detail in Figs. 4 and 5 .
  • Second end 7 includes a U-shaped bend 9 which is bent around second tab 12 as apparent from Figs. 4 and 5 once again.
  • U-shaped bend 9 is composed of two essentially orthogonal bends.
  • Fig. 3 which exhibits the composition of carrier 2 and electrode 3 constituting electrode device 1, midline 4 is parallel to a main plane 14 defined by carrier 2.
  • main plane 14 is defined as a plane on carrier 2 whereupon electrode 3 rests.
  • midline 4 is curved. This may be advantageous in the embodiment shown in Fig. 6 and in the application explained in more detail below with reference to Fig. 9 wherein two electrodes 3 on one carrier 2 are used for measuring electrical conductivity of items 17 contacting electrodes 3 while passing along in an essentially circular movement, by reducing friction between electrodes 3 and items 17 passing along.
  • Electrode 3 further includes a stamped elevation 15 extending orthogonally to the main plane 14 and along midline 4. Elevation 15 improves structural rigidity of electrode 3. In the application explained in more detail below with reference to Fig. 9 , elevation 15 also improves exposition of electrodes 3 to items 17 passing along for purposes of measuring electrical conductivity. As an alternative to forming electrode 3 from a stamped metal sheet. electrode 3 may also be formed by casting or injection moulding liquid metal, to form electrode 3 as a cast component without any need for additional forming such as stamping.
  • latch 6 and second end 7 are flat sections of electrode 3 and oriented parallel to main plane 14. Stamped elevation 15 projects away from carrier 2.
  • the embodiment of electrode device 1 as exhibited in Figs. 1 to 8 is configured to be applied in a laundry care machine 16 for measuring an electric resistance of pieces of laundry 17 to be treated, as explained below in further detail with reference to Fig. 9 .
  • the at least one electrode 3 is two electrodes 3 fixed to one carrier 2, the two electrodes 3 being similarly shaped.
  • Figs. 3, 4 , 5, and 6 exhibit carrier 2 as a component formed from plastic, specifically by injection moulding, and including two second tabs 12 with respective register pins 13 to be received by respective register holes 10 of electrodes 3 and including grooves 11 formed on main plane 14 for receiving respective latches 6 of electrodes 3. Grooves 11 are formed by respective hooks projecting out of main plane 14.
  • the shape of a register pin 13 need not conform in very detail to the shape of a corresponding register hole 10.
  • Register hole 10 may be circular and register pin 13 may be a circular cylinder or a part of such as specifically apparent from Figs. 3 and 5 .
  • Figs. 7 and 8 exhibit features related to a method for making electrode device 1 as exhibited in Figs. 1 to 5 , the method comprising the following steps:
  • Fig. 9 exhibits a household appliance 16 for treating items 17 having an electrical conductance, the household appliance 16 including an electrode device 1 constituted as detailed with reference to Figs. 1 to 8 and configured for contacting items 17 to be treated to measure their electrical conductance.
  • Household appliance 16 has a controller 18 connected to electrodes 3 by electrical connector 19 and configured to measure the electrical conductivity.
  • Electrical connector 19 may include respective sockets wherein first tabs 8 of electrodes 3 are to be plugged in and cabling for providing connections to controller 18, as indicated in Fig. 9 by dashed lines.
  • Fig. 9 presents a schematic view of a vertical plane of household appliance 16 from inside to outside towards a front of household appliance 16.
  • Household appliance 16 is configured for treating items 17 which are pieces of laundry 17, which are shown in Fig. 9 by dotted lines.
  • Household appliance 16 includes a rotatable drum 20 for holding the pieces of laundry 17, drum 20 having an opening 21 which is borne against a bearing shield 22.
  • Carrier 2 forms a component of bearing shield 22 projecting into opening 21 and exposing electrodes 3 into drum 20 for obtaining electrical contact to pieces of laundry 17 moving along carrier 2 by rotation of drum 20.
  • household appliance 16 of Fig. 9 is a laundry dryer 16, whose further components are not shown in Fig. 8 for the sake of conciseness.
  • electrode device 1 is fitted to carrier 2 by latch 6 at its first end 7 and by register pin 13 inserted into its register hole 10 at second end 7 so as to be irretrievable by any action within normal use, without extraction of electrode device 1 from appliance 16 that it has been associated to ands without application of specific tools that may eventually break carrier 2 or electrode 3.
  • electrode device 1 is easily assembled from its components and easily installed.
  • the components of electrode device 1 which include carrier 2 and at least one electrode 3 may be made with ease and applying conventional and reliable technologies such as stamping of metal sheet for making electrode 3 and injection moulding for making carrier 2. Electrode device 1 thus obtained is firm and durable in normal use and can stand all reasonably expectable strain without deformation and decomposition over a very long time.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP21185479.9A 2021-07-14 2021-07-14 Elektrodenvorrichtung, verfahren zur herstellung davon und haushaltsgerät damit Pending EP4119716A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21185479.9A EP4119716A1 (de) 2021-07-14 2021-07-14 Elektrodenvorrichtung, verfahren zur herstellung davon und haushaltsgerät damit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21185479.9A EP4119716A1 (de) 2021-07-14 2021-07-14 Elektrodenvorrichtung, verfahren zur herstellung davon und haushaltsgerät damit

Publications (1)

Publication Number Publication Date
EP4119716A1 true EP4119716A1 (de) 2023-01-18

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ID=76920647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21185479.9A Pending EP4119716A1 (de) 2021-07-14 2021-07-14 Elektrodenvorrichtung, verfahren zur herstellung davon und haushaltsgerät damit

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EP (1) EP4119716A1 (de)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593571A (en) * 1969-08-04 1971-07-20 Whirlpool Co Dryness sensor assembly
US4899464A (en) 1988-11-14 1990-02-13 Whirlpool Corporation Dryer outlet grill with sensor
DE19521625C1 (de) * 1995-06-14 1996-07-11 Bauknecht Hausgeraete Kontaktstreifen für Sensoren bei einem Wäschetrockner
KR100508341B1 (ko) 2003-08-13 2005-08-17 엘지전자 주식회사 의류건조기의 의류 건조상태 검출장치
US20070039200A1 (en) * 2005-05-23 2007-02-22 Hwang Sung G Drying apparatus
EP2458075A1 (de) * 2010-11-29 2012-05-30 Electrolux Home Products Corporation N.V. Wäschetrockner mit Feuchtigkeitssensorsystem
EP2695989A1 (de) 2012-08-10 2014-02-12 BSH Bosch und Siemens Hausgeräte GmbH Elektrodenanordnung für ein Gerät sowie Lagerschild eines Trockners mit einer solchen Elektrodenanordnung
KR101788037B1 (ko) * 2016-05-02 2017-10-20 두얼메카닉스 주식회사 세탁기용 세탁물 끼임 검출용 센서 조립체
EP3450614A1 (de) * 2017-09-05 2019-03-06 Electrolux Appliances Aktiebolag Wäschetrockner mit feuchtigkeitssensorsystem
WO2020019934A1 (zh) * 2018-07-23 2020-01-30 青岛海尔滚筒洗衣机有限公司 一种过滤支架及干衣机
US20210017698A1 (en) * 2019-07-17 2021-01-21 Haier Us Appliance Solutions, Inc. Dryer sensor rod with oriented tab

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593571A (en) * 1969-08-04 1971-07-20 Whirlpool Co Dryness sensor assembly
US4899464A (en) 1988-11-14 1990-02-13 Whirlpool Corporation Dryer outlet grill with sensor
DE19521625C1 (de) * 1995-06-14 1996-07-11 Bauknecht Hausgeraete Kontaktstreifen für Sensoren bei einem Wäschetrockner
KR100508341B1 (ko) 2003-08-13 2005-08-17 엘지전자 주식회사 의류건조기의 의류 건조상태 검출장치
US20070039200A1 (en) * 2005-05-23 2007-02-22 Hwang Sung G Drying apparatus
EP2458075A1 (de) * 2010-11-29 2012-05-30 Electrolux Home Products Corporation N.V. Wäschetrockner mit Feuchtigkeitssensorsystem
EP2695989A1 (de) 2012-08-10 2014-02-12 BSH Bosch und Siemens Hausgeräte GmbH Elektrodenanordnung für ein Gerät sowie Lagerschild eines Trockners mit einer solchen Elektrodenanordnung
KR101788037B1 (ko) * 2016-05-02 2017-10-20 두얼메카닉스 주식회사 세탁기용 세탁물 끼임 검출용 센서 조립체
EP3450614A1 (de) * 2017-09-05 2019-03-06 Electrolux Appliances Aktiebolag Wäschetrockner mit feuchtigkeitssensorsystem
WO2020019934A1 (zh) * 2018-07-23 2020-01-30 青岛海尔滚筒洗衣机有限公司 一种过滤支架及干衣机
US20210017698A1 (en) * 2019-07-17 2021-01-21 Haier Us Appliance Solutions, Inc. Dryer sensor rod with oriented tab

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