EP2100996A1 - Waschvorrichtung mit induktive Beheizung - Google Patents

Waschvorrichtung mit induktive Beheizung Download PDF

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Publication number
EP2100996A1
EP2100996A1 EP20080102497 EP08102497A EP2100996A1 EP 2100996 A1 EP2100996 A1 EP 2100996A1 EP 20080102497 EP20080102497 EP 20080102497 EP 08102497 A EP08102497 A EP 08102497A EP 2100996 A1 EP2100996 A1 EP 2100996A1
Authority
EP
European Patent Office
Prior art keywords
tub
induction heating
washing appliance
heating element
dishwashing machine
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
EP20080102497
Other languages
English (en)
French (fr)
Other versions
EP2100996B1 (de
Inventor
Hans-Werner Engler
Josef Buser
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to PL08102497T priority Critical patent/PL2100996T3/pl
Priority to EP08102497.8A priority patent/EP2100996B1/de
Priority to ES08102497.8T priority patent/ES2565241T3/es
Priority to PCT/EP2009/052145 priority patent/WO2009112357A1/en
Publication of EP2100996A1 publication Critical patent/EP2100996A1/de
Application granted granted Critical
Publication of EP2100996B1 publication Critical patent/EP2100996B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • 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
    • A47L15/4285—Water-heater arrangements

Definitions

  • the present invention relates to a washing appliance, particularly a dishwashing machine, comprising a tub and a heating system for heating water to be used in the washing cycle.
  • washing appliance we mean every kind of appliance in which laundry or dishes are treated, either for washing of for drying purposes, i.e. for instance washing machine, dishwashing machine, clothes dryers, washing and drying machines.
  • an induction heating element comprising a copper coil (bobbin) is used to generate an alternating magnetic field which induces eddy currents into the ferromagnetic material of the dishwasher tub, which heats up due to Joule effect. Since the material of the tub, preferably a ferritic stainless steel, heats up, the water inside the tub warms up as well until a predetermined temperature is reached.
  • the bobbin of the induction heating element is energized and controlled by an electronic circuit of the dishwasher.
  • the induction heating system can be split into sections, i.e. in different induction bobbins.
  • the heating can therefore be applied at the most efficient areas of the dishwasher (tub bottom, top, side and rear walls).
  • the split solution allows to control different induction zones at different wash cycle phases.
  • the bobbins of the induction heating systems do not need to have a circular shape. Any other shape or design is possible (for instance, the round conductor may have turns at substantially right angles to previous turn).
  • the program cycle time is shorter and performance data of the dishwasher are much better regarding energy consumption and cycle time.
  • the saved energy can be used to improve the cleaning result, and/or for lower energy declaration.
  • the induction heating system can be easily used to generate steam into the tub. Control of one or multiple split coils to generate steam in certain areas is possible. Induced energy will heat up water and generate steam without hydraulic pump operation. Hot steam can be used for high performance cleaning programs. Also the drying phase of the machine is improved by conducting an air flow over induction heated area inside the tub. Air flow can be directed over the induction zone or multiple zones. Hot air also can be generated by using an air channel or pipe made from ferritic material in which energy is induced.
  • a metal tub of a dishwasher is indicated with reference 10.
  • the tub is composed by a L-shaped bottom back 10a and by a U-shaped wrapper 10b ( figure 7 ).
  • the two metal parts 10a and 10b are roll welded together.
  • the bottom portion of the tub 10 is provided, on its outside surface 12, with an induction heating coil in form of a bobbin 14 housed in a bobbin supporting frame 14a.
  • the portion A of the tub is heated directly on the basis of the physical principle of eddy current heating.
  • the high-frequency changing field induces into ferritic tub bottom eddy currents which heat up the tub (and water contained therein).
  • FIG. 3 and 4 it is shown a second embodiment of the invention in which the tub 10 is provided with an added ferromagnetic plate 16 welded or glued to the tub and which is heated due to eddy currents induced by the bobbin 14.
  • This embodiment is particularly indicated for laundry washing machines and for dishwashers having a tub made of polymeric material or of not ferromagnetic material (for instance austenitic stainless steel).
  • the plate and the induction heating element associated thereto may assume a curvilinear shape in order to cope with the shape of the tub.
  • the plate 16 then heats by conduction the metal tub 10.
  • the tub 10 does not need to be of ferromagnetic material, and can be also made of polymeric material or of austenitc stainless steel.
  • FIG 3 it is shown the condition in which the tub 10 is filled with water W, and this configuration is typical of an early stage of the washing cycle when water is recirculated and sprayed on crockery.
  • figure 4 it is shown a configuration typical of the final drying stage, in which air is circulated on the surface of the tub 10 (arrow sin the drawings) and it is heated up by the hot surface of the tub heated by the induction heating coil.
  • FIG 5 it is shown a further embodiment in which only a portion of the tub 10, indicated with reference 11 in figure 5 , is made of ferromagnetic material, for instance ferritic stainless steel.
  • the portion or plate 11 is integrated into the tub bottom, and it is surrounded by a heat transfer insulation part 13.
  • the tub may be made of austenitic stainless steel material, and only the portion 11, i.e. the very top layer of the induction heaters, is made of ferritic material and is visible by the user.
  • FIG 6 it is shown a schematic electrical circuit for the induction heating bobbin 14 underneath the bottom of the tub 10.
  • the spiral-shaped inductor 14 acts as the primary circuit of a transformer whose secondary circuit is short-out, the secondary winding being the ferritic tub bottom or a heating plate. Between the bottom of the tub 10 and the bobbin 14 it is interposed a layer 15 of electrical non magnetic insulation.
  • the inductor 14 implements an alternate current (AC) with a frequency between 25 and 35 kHz.
  • the Inductor 14a is generating an oscillating circuit by a condenser 20. The needed power comes from an inverter circuit 22. It is not necessary to describe in detail the induction heating coil or the driving circuit thereof because these are well known to the experts in the art.
  • the electronic control circuit of a dishwasher comprises also a microprocessor for controlling the induction heating system, as well as a circuit for controlling the temperature reached by the tub.
  • Such control circuit may comprise a temperature sensor (not shown) carried by a holder which is spring-biased into contact with the outside surface of the tub 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • General Induction Heating (AREA)
EP08102497.8A 2008-03-11 2008-03-11 Waschvorrichtung mit induktive Beheizung Not-in-force EP2100996B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL08102497T PL2100996T3 (pl) 2008-03-11 2008-03-11 Urządzenie myjące z grzaniem indukcyjnym
EP08102497.8A EP2100996B1 (de) 2008-03-11 2008-03-11 Waschvorrichtung mit induktive Beheizung
ES08102497.8T ES2565241T3 (es) 2008-03-11 2008-03-11 Aparato de lavado con calentamiento por inducción
PCT/EP2009/052145 WO2009112357A1 (en) 2008-03-11 2009-02-24 Washing appliance with induction heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08102497.8A EP2100996B1 (de) 2008-03-11 2008-03-11 Waschvorrichtung mit induktive Beheizung

Publications (2)

Publication Number Publication Date
EP2100996A1 true EP2100996A1 (de) 2009-09-16
EP2100996B1 EP2100996B1 (de) 2016-02-17

Family

ID=39673364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08102497.8A Not-in-force EP2100996B1 (de) 2008-03-11 2008-03-11 Waschvorrichtung mit induktive Beheizung

Country Status (4)

Country Link
EP (1) EP2100996B1 (de)
ES (1) ES2565241T3 (de)
PL (1) PL2100996T3 (de)
WO (1) WO2009112357A1 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010049289A1 (de) * 2008-10-29 2010-05-06 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur pflege von wäschestücken mit einer heizvorrichtung und verfahren zum heizen einer waschlauge und/oder von wäschestücken in einer trommel eines hausgeräts
WO2011012590A1 (en) * 2009-07-31 2011-02-03 BSH Bosch und Siemens Hausgeräte GmbH Heater pocket for a household appliance
DE102010029075A1 (de) * 2010-05-18 2011-11-24 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät und Verfahren zum Betreiben eines Wäschebehandlungsgeräts
US8485001B2 (en) 2009-07-31 2013-07-16 Bsh Home Appliances Corporation Household appliance having a tub with a fluid guide
EP2987446A1 (de) * 2014-08-22 2016-02-24 LG Electronics Inc. Geschirrspüler
WO2018038382A1 (en) * 2016-08-25 2018-03-01 Lg Electronics Inc. Laundry apparatus
DE102017207652A1 (de) * 2017-05-05 2018-11-08 BSH Hausgeräte GmbH Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine
WO2020032416A1 (en) * 2017-08-09 2020-02-13 Lg Electronics Inc. Laundry treating apparatus
EP3505674A4 (de) * 2016-08-25 2020-03-25 LG Electronics Inc. -1- Bekleidungsbehandlungsvorrichtung und steuerungsverfahren dafür
US10941511B2 (en) 2016-08-25 2021-03-09 Lg Electronics Inc. Clothes treatment apparatus and control method therefor
KR20210110231A (ko) * 2020-02-28 2021-09-07 엘지전자 주식회사 의류처리장치
US11155956B2 (en) 2018-08-09 2021-10-26 Lg Electronics Inc. Laundry treatment apparatus
US20240183099A1 (en) * 2017-08-09 2024-06-06 Lg Electronics Inc. Laundry treatment apparatus and method of controlling the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102377042B1 (ko) * 2017-08-09 2022-03-22 엘지전자 주식회사 의류처리장치
KR102761899B1 (ko) 2018-08-09 2025-02-05 엘지전자 주식회사 의류처리장치
CN112064294A (zh) * 2020-10-15 2020-12-11 上海优未科技有限公司 一种洗衣机盛水桶及洗衣机
IT202300026916A1 (it) * 2023-12-18 2025-06-18 Cheers Srl Lavastoviglie ad induzione

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181846A (en) * 1977-10-05 1980-01-01 Cunningham Ronald J Rotary heating apparatus
US5724750A (en) * 1995-11-16 1998-03-10 Burress; Vergel F. Clothes dryer with Peltier effect heating, infrared heating, and vacuum drying capabilities
EP1507033A1 (de) * 2003-08-13 2005-02-16 LG Electronics Inc. Waschmaschine mit Dampferzeuger
US20060076037A1 (en) * 2004-10-12 2006-04-13 Lg Electronics Inc. Dishwasher and method for controlling the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06133915A (ja) * 1992-10-30 1994-05-17 Toshiba Corp 食器洗い乾燥器
JP3744553B2 (ja) * 1994-09-29 2006-02-15 三洋電機株式会社 洗濯機
DE10130193B4 (de) * 2001-06-22 2006-01-26 AEG Hausgeräte GmbH Spülgutträger für eine Geschirrspülmaschine und Verfahren zum Behandeln von Spülgut in einer Geschirrspülmaschine
JP2005177331A (ja) * 2003-12-22 2005-07-07 Mitsubishi Electric Corp 洗濯機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181846A (en) * 1977-10-05 1980-01-01 Cunningham Ronald J Rotary heating apparatus
US5724750A (en) * 1995-11-16 1998-03-10 Burress; Vergel F. Clothes dryer with Peltier effect heating, infrared heating, and vacuum drying capabilities
EP1507033A1 (de) * 2003-08-13 2005-02-16 LG Electronics Inc. Waschmaschine mit Dampferzeuger
US20060076037A1 (en) * 2004-10-12 2006-04-13 Lg Electronics Inc. Dishwasher and method for controlling the same

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010049289A1 (de) * 2008-10-29 2010-05-06 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur pflege von wäschestücken mit einer heizvorrichtung und verfahren zum heizen einer waschlauge und/oder von wäschestücken in einer trommel eines hausgeräts
WO2011012590A1 (en) * 2009-07-31 2011-02-03 BSH Bosch und Siemens Hausgeräte GmbH Heater pocket for a household appliance
US20110023555A1 (en) * 2009-07-31 2011-02-03 Bsh Home Appliances Corporation Heater pocket for a household appliance
US8485001B2 (en) 2009-07-31 2013-07-16 Bsh Home Appliances Corporation Household appliance having a tub with a fluid guide
EA019026B1 (ru) * 2009-07-31 2013-12-30 Бсх Бош Унд Сименс Хаусгерете Гмбх Стиральная машина
DE102010029075A1 (de) * 2010-05-18 2011-11-24 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät und Verfahren zum Betreiben eines Wäschebehandlungsgeräts
US10258218B2 (en) 2014-08-22 2019-04-16 Lg Electronics Inc. Dishwasher
EP2987446A1 (de) * 2014-08-22 2016-02-24 LG Electronics Inc. Geschirrspüler
US11008694B2 (en) 2016-08-25 2021-05-18 Lg Electronics Inc. Laundry apparatus
US11828016B2 (en) 2016-08-25 2023-11-28 Lg Electronics Inc. Clothes treatment apparatus and control method therefor
US12168847B2 (en) 2016-08-25 2024-12-17 Lg Electronics Inc. Clothes treatment apparatus and control method therefor
CN114045641B (zh) * 2016-08-25 2024-04-05 Lg电子株式会社 衣物处理装置
EP3505674A4 (de) * 2016-08-25 2020-03-25 LG Electronics Inc. -1- Bekleidungsbehandlungsvorrichtung und steuerungsverfahren dafür
US10941511B2 (en) 2016-08-25 2021-03-09 Lg Electronics Inc. Clothes treatment apparatus and control method therefor
WO2018038382A1 (en) * 2016-08-25 2018-03-01 Lg Electronics Inc. Laundry apparatus
US11421369B2 (en) 2016-08-25 2022-08-23 Lg Electronics Inc. Clothes treatment apparatus and control method therefor
CN114045641A (zh) * 2016-08-25 2022-02-15 Lg电子株式会社 衣物处理装置
DE102017207652A1 (de) * 2017-05-05 2018-11-08 BSH Hausgeräte GmbH Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine
US11136707B2 (en) 2017-08-09 2021-10-05 Lg Electronics Inc. Laundry treating apparatus
CN110820253B (zh) * 2017-08-09 2022-10-04 Lg电子株式会社 衣物处理设备
CN110820253A (zh) * 2017-08-09 2020-02-21 Lg电子株式会社 衣物处理设备
US20240183099A1 (en) * 2017-08-09 2024-06-06 Lg Electronics Inc. Laundry treatment apparatus and method of controlling the same
US12091805B2 (en) 2017-08-09 2024-09-17 Lg Electronics Inc. Laundry treating apparatus
WO2020032416A1 (en) * 2017-08-09 2020-02-13 Lg Electronics Inc. Laundry treating apparatus
US12281430B2 (en) * 2017-08-09 2025-04-22 Lg Electronics Inc. Laundry treatment apparatus and method of controlling the same
US11155956B2 (en) 2018-08-09 2021-10-26 Lg Electronics Inc. Laundry treatment apparatus
US11905642B2 (en) 2018-08-09 2024-02-20 Lg Electronics Inc. Laundry treatment apparatus
KR20210110231A (ko) * 2020-02-28 2021-09-07 엘지전자 주식회사 의류처리장치

Also Published As

Publication number Publication date
EP2100996B1 (de) 2016-02-17
PL2100996T3 (pl) 2016-06-30
ES2565241T3 (es) 2016-04-01
WO2009112357A1 (en) 2009-09-17

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