EP2019160A1 - Wäschetrockner - Google Patents

Wäschetrockner Download PDF

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Publication number
EP2019160A1
EP2019160A1 EP07425474A EP07425474A EP2019160A1 EP 2019160 A1 EP2019160 A1 EP 2019160A1 EP 07425474 A EP07425474 A EP 07425474A EP 07425474 A EP07425474 A EP 07425474A EP 2019160 A1 EP2019160 A1 EP 2019160A1
Authority
EP
European Patent Office
Prior art keywords
washer
lid
washing
drier machine
tank
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
EP07425474A
Other languages
English (en)
French (fr)
Other versions
EP2019160B1 (de
Inventor
Sivano Fumagalli
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.)
Candy SpA
Original Assignee
Candy SpA
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 Candy SpA filed Critical Candy SpA
Priority to DE602007009374T priority Critical patent/DE602007009374D1/de
Priority to EP07425474A priority patent/EP2019160B1/de
Publication of EP2019160A1 publication Critical patent/EP2019160A1/de
Application granted granted Critical
Publication of EP2019160B1 publication Critical patent/EP2019160B1/de
Ceased 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/088—Liquid supply arrangements
    • 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
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
    • 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
    • D06F2105/08—Draining of washing liquids
    • 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
    • D06F2105/36—Condensing arrangements, e.g. control of water injection therefor
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • 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 present invention relates to a domestic washer-drier machine which provides for washing and drying the laundry.
  • Domestic washer-drier machines are known to comprise a support and housing structure, a washing tank being housed therein, which is provided with a front opening that can be closed by means of a porthole door that is hinged in front of the housing.
  • a basket is pivotally housed about a horizontal or inclined axis for the laundry to be accommodated therein to be washed and/or dried.
  • the basket also defines a front opening that is located such as to match the opening of the washing tank, in order to load/unload the laundry.
  • the washing tank is suitable to contain the washing liquid during the laundry washing steps, and to be a portion of the drying circuit during the laundry drying step.
  • a washing water delivery system is provided to be connected to the water system.
  • This washing water delivery system comprises a plurality of electrovalves which are suitable to selectively adjust the supply to a plurality of flow paths extending downstream of these electrovalves through respective compartments of a detergent tray to the washing tank.
  • a drain duct with a discharge pump being associated thereto On the bottom of the washing tank there is provided a drain duct with a discharge pump being associated thereto, which provides for the removal of the washing liquid from the tank and controls, together with the supply electrovalves, the liquid level within the tank.
  • an electric resistance is provided, which is arranged within the tank in the gap between the tank wall and the laundry basket.
  • a drying circuit of prior art washer-drier machines typically comprises a suction unit, a heat exchanger and a heating unit with electric resistances intercommunicating by means of a drying circuit.
  • the air flow generated by the suction unit is heated by the electric resistances and sent to the basket, where it flows through the wet laundry thereby causing the water contained in the fabric to evaporate.
  • the heat exchanger which is generally a container separate from the washing tank and provided with a spray nozzle, the wet air is cooled by a jet of cold water. Due to this cooling, the vapour condensates and is collected and discharged together with the cooling water. The de-humidified air is then sucked again by the suction unit and ricirculated.
  • the cooling water is usually supplied to the heat exchanger by means of a cooling duct with a dedicated electrovalve which controls the loading of the mains water in the heat exchanger (condenser).
  • the production cost of the washer-drier machines result to be further increased by the difficulty or impossibility of using the large-scale components that are manufactured for washing machines.
  • the object of the present invention is to provide a washer-drier machine having such characteristics as to overcome at least some of the problems mentioned with reference to the prior art.
  • the washer-drier machine comprises:
  • the lid comprises a system of cavities that are suitable to contain the cooling water, such as for example a cooling coil that can be supplied with mains water such that the lid forms a condensation wall.
  • the suction duct is formed by the tank wall and by a lid that is manufactured separately and then connected to the tank wall, the same washing tank (with and without lid, respectively) can be used both for manufacturing washing machines and for manufacturing washer-drier machines.
  • the lid with a system of cavities to contain the cooling water, the traditional atmospheric condenser separated from the tank can be eliminated and the overall structure of the washer-drier machine can be simplified.
  • the system of cavities i.e. the lid cooling coil, is arranged in the washing water supply path, preferably in series between the supply electrovalve and a detergent tray and can be supplied by means of the same washing water supply circuit.
  • a washer-drier machine 1 comprises a support and housing structure 2, a washing tank 3 being housed therein, which is provided with a front opening that can be closed by means of a porthole door 4 being hinged in the front of the housing 2.
  • a basket 5 is pivotally housed about a horizontal or inclined axis, for the laundry to be accommodated therein to be washed and/or dried.
  • the basket 5 also defines a front opening that is located such as to match the opening of the washing tank 3, in order to load/unload the laundry.
  • the washing tank 3 is suitable to contain the washing liquid during the laundry washing steps, and to be a portion of the drying circuit during the laundry drying step.
  • a washing water delivery system is provided to be connected to the water system.
  • This washing water delivery system comprises a plurality of washing flow paths extending from, for example, two supply electrovalves 6, 7, through corresponding compartments 8, 9, 10 of a detergent tray 12, to the washing tank 3.
  • a drain duct 14 with a discharge pump 15 being associated thereto, which provides for the removal of the washing liquid from the tank 3 and controls, together with the supply electrovalves 6, 7 the level of liquid within the tank 3.
  • a coiled electric resistance 11 is provided, which is arranged within the tank 3, particularly on the bottom 13 of the latter, in the gap between the tank wall 3 and the laundry basket 5.
  • the washer-drier machine 1 further comprises a closed-loop drying circuit with a suction unit, for example an fan impeller 17 driven by an electric motor 18, a heat exchanger as well as a heating unit with electric resistance 21, which communicate with each other by means of a drying circuit 16.
  • a closed-loop drying circuit with a suction unit for example an fan impeller 17 driven by an electric motor 18, a heat exchanger as well as a heating unit with electric resistance 21, which communicate with each other by means of a drying circuit 16.
  • the air flow 22 generated by the suction unit 17, 18 is heated by the electric resistance 21 and sent to the basket 5, where it flows through the wet laundry thereby causing the water contained in the fabric to evaporate.
  • the heat exchanger is arranged downstream of the laundry basket 5 (with reference to the direction of the drying air flow 22) and cools the wet air flowing from the basket 5.
  • vapour condensates and is collected and discharged, for example together with a volume of cooling water.
  • the de-humidified air is then sucked again by the suction unit 17, 18 and ricirculated.
  • the drying circuit 16 comprises a tubular suction duct 26 formed of a wall portion 27 of the washing tank 3 and of a lid 28 that is manufactured separately and then connected to the wall portion 27.
  • the lid 28 comprises a system of cavities that are suitable to contain the cooling water, for example a cooling coil 29 that can be supplied with mains water such that the lid 28 forms a condensation wall.
  • this suction duct 26 extends within the washing tank 3 from a lower area thereof to an opening 30 in the upper area thereof and is defined by a portion of the inner surface of the tank 3 and by the lid 28.
  • the same washing tank 3 can be advantageously used both with washing machines without drying function (without the inner lid 28), and with drier-washer machines (with the inner lid 28). Furthermore, as the lid 28 forms a condensation wall, two condensation surfaces are obtained, i.e. the inner surface 31 and the outer surface 32 of the lid 28, which are both arranged within the washing tank 3 and blown by the drying air 22.
  • the cooling coil 29 can be supplied with mains water and arranged in the washing water supply path, between the supply electrovalve 6, 7 and the washing tank 3, preferably upstream of the detergent tray 12.
  • the cooling coil 29 is supplied by means of the same washing water supply circuit. This allows the elimination of a dedicated supply circuit for supplying the cooling coil 29 as well as a simplification of the control programs driving the supply electrovalves.
  • the lid 28 is made from plastics and the cooling coil 29 is formed by means of blow moulding at or in the lid 28.
  • the lid 28 made of plastics can be used both with a metal washing tank (e.g. stainless steel) and with a washing tank made of plastics by means of moulding.
  • the cooling coil 29 cannot be emptied. By opening the supply valve 6, 7, the water contained within the cooling coil 30 can be only replaced with fresh mains water.
  • the lid 28 is removably connected to the washing tank 3, such as to allow the same to be replaced in the event of damage, for example limestone clogging.
  • the washing tank 3 defines therein and upstream of the suction duct 26 (with reference to the direction of the drying air flow 22) a condensation space 19 that is suitable to contain a volume of cooling water 20 that forms a surface of free water and spaced away from the basket 5 such as to be capable of cooling the drying air flow 22 downstream of the basket 5 and upstream of the suction duct 16 within the washing tank 3.
  • the free water surface is an additional condensation surface to those provided by the lid 28.
  • the condensation space 19 is formed at the tank bottom 13, approximatively below the basket 5.
  • This further condensation surface also does not require any dedicated supply circuit, because the water volume 20 (condensation surface) on the bottom of the washing tank 3 can be easily supplied with the mains water that is loaded by means of the washing water loading circuit.
  • the volume of cooling water 20 on the tank bottom 13 also allows a continuous use of a same water volume until the latter is heated past a threshold temperature allowed for condensation purposes. This results in a considerable saving of cooling water during the drying step.
  • the washer-drier machine 1 comprises a control unit (not shown in the drawings) that is configured such as to cause the discharge pump 15 and supply electrovalves 6, 7 to drain and/or replace the cooling water within the coil 29 of the lid 28 and/or the cooling water volume 20 on the tank bottom as a function of the temperature of the cooling water and/or as a function of the level of the mixture of cooling water 20 and condensate on the tank bottom 13.
  • the control unit interacts with suitable pressure or level sensors 24 that are arranged at the tank bottom 13 and one or more temperature sensors 25 that are arranged in direct or indirect thermal contact with the cooling water within the lid 28 and/or on the tank bottom 13.
  • control unit is configured such as to cause the discharge pump 15 and supply electrovalves 6, 7 to drain and/or replace the cooling water within the coil 29 of the lid 28 and/or the cooling water volume 20 on the tank bottom at predetermined time intervals, such that:
  • control unit is preferably configured such as to allow selecting a drying program, in which, during an early drying step, only the first heat exchanger will be operated, whereas the condensation space 19 on the tank bottom 13 will be not provided with cooling water 20.
  • the washer-drier machine according to the invention has a number of advantages.
  • the suction duct being formed by the wall portion of the washing tank 3, and the lid 28 being manufactured separately and then connected to the wall portion, the same tank structure can be used both for washing machines and washer-drier machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP07425474A 2007-07-26 2007-07-26 Wäschetrockner Ceased EP2019160B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE602007009374T DE602007009374D1 (de) 2007-07-26 2007-07-26 Wäschetrockner
EP07425474A EP2019160B1 (de) 2007-07-26 2007-07-26 Wäschetrockner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07425474A EP2019160B1 (de) 2007-07-26 2007-07-26 Wäschetrockner

Publications (2)

Publication Number Publication Date
EP2019160A1 true EP2019160A1 (de) 2009-01-28
EP2019160B1 EP2019160B1 (de) 2010-09-22

Family

ID=38777924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425474A Ceased EP2019160B1 (de) 2007-07-26 2007-07-26 Wäschetrockner

Country Status (2)

Country Link
EP (1) EP2019160B1 (de)
DE (1) DE602007009374D1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041513A1 (en) 2011-09-19 2013-03-28 Electrolux Home Products Corporation N.V. A washer-dryer with at least one condenser
EP2955264A1 (de) * 2014-06-10 2015-12-16 BSH Hausgeräte GmbH Wäschetrockner
EP2975174A1 (de) * 2014-07-17 2016-01-20 Herbert Kannegiesser GmbH Verfahren zum trocknen von wäsche und trockner
JP2018061616A (ja) * 2016-10-11 2018-04-19 日立アプライアンス株式会社 ドラム式洗濯機
CN108118503A (zh) * 2016-11-30 2018-06-05 博西华电器（江苏）有限公司 干衣机
CN109371627A (zh) * 2018-12-14 2019-02-22 长虹美菱股份有限公司 一种滚筒式洗干一体机
CN111254668A (zh) * 2018-11-30 2020-06-09 博西华电器（江苏）有限公司 衣物烘干器具
EP4074876A1 (de) * 2021-04-16 2022-10-19 Whirlpool Corporation Kondensationssystem für kombiniertes wasch-/trocknungsgerät

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813414A (en) * 1955-05-27 1957-11-19 Westinghouse Electric Corp Apparatus for washing and drying fabrics
US2868004A (en) * 1952-10-11 1959-01-13 Kenneth R Runde Washing and drying machines
US3012333A (en) * 1958-07-02 1961-12-12 Gen Electric Condenser construction for clothes dryers
US3121000A (en) * 1960-11-09 1964-02-11 Philco Corp Laundry dryer or washer-dryer
EP0380992A1 (de) * 1989-01-25 1990-08-08 MERLONI ELETTRODOMESTICI S.p.A. Vorrichtung zum Waschen und Trocknen von Wäsche
JP2003079987A (ja) * 2001-09-10 2003-03-18 Toshiba Corp 洗濯乾燥機
JP2003117283A (ja) * 2001-10-17 2003-04-22 Toshiba Corp 洗濯乾燥機
EP1314809A2 (de) * 2001-11-14 2003-05-28 Sanyo Electric Co., Ltd. Trommelwaschmaschine mit Trocknungsfunktion
EP1500739A1 (de) * 2003-07-24 2005-01-26 Samsung Electronics Co., Ltd. Trockungsvorrichtung und Waschmaschine mit derselben
EP1657341A2 (de) * 2004-11-12 2006-05-17 LG Electronics Inc. Verfahren und Vorrichtung zur Kontrolle der Trocknung in einer maschine zum Waschen und Trocknen
WO2007013327A1 (ja) * 2005-07-28 2007-02-01 Sharp Kabushiki Kaisha ドラム式乾燥洗濯機
JP2007135728A (ja) * 2005-11-16 2007-06-07 Hitachi Appliances Inc 洗濯乾燥機

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868004A (en) * 1952-10-11 1959-01-13 Kenneth R Runde Washing and drying machines
US2813414A (en) * 1955-05-27 1957-11-19 Westinghouse Electric Corp Apparatus for washing and drying fabrics
US3012333A (en) * 1958-07-02 1961-12-12 Gen Electric Condenser construction for clothes dryers
US3121000A (en) * 1960-11-09 1964-02-11 Philco Corp Laundry dryer or washer-dryer
EP0380992A1 (de) * 1989-01-25 1990-08-08 MERLONI ELETTRODOMESTICI S.p.A. Vorrichtung zum Waschen und Trocknen von Wäsche
JP2003079987A (ja) * 2001-09-10 2003-03-18 Toshiba Corp 洗濯乾燥機
JP2003117283A (ja) * 2001-10-17 2003-04-22 Toshiba Corp 洗濯乾燥機
EP1314809A2 (de) * 2001-11-14 2003-05-28 Sanyo Electric Co., Ltd. Trommelwaschmaschine mit Trocknungsfunktion
EP1500739A1 (de) * 2003-07-24 2005-01-26 Samsung Electronics Co., Ltd. Trockungsvorrichtung und Waschmaschine mit derselben
EP1657341A2 (de) * 2004-11-12 2006-05-17 LG Electronics Inc. Verfahren und Vorrichtung zur Kontrolle der Trocknung in einer maschine zum Waschen und Trocknen
WO2007013327A1 (ja) * 2005-07-28 2007-02-01 Sharp Kabushiki Kaisha ドラム式乾燥洗濯機
JP2007135728A (ja) * 2005-11-16 2007-06-07 Hitachi Appliances Inc 洗濯乾燥機

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041513A1 (en) 2011-09-19 2013-03-28 Electrolux Home Products Corporation N.V. A washer-dryer with at least one condenser
US10407818B2 (en) 2011-09-19 2019-09-10 Electrolux Home Products Corporation N.V. Washer-dryer with at least one condenser
EP2758583B2 (de) † 2011-09-19 2022-08-24 Electrolux Home Products Corporation N.V. Wäschetrockner mit mindestens einem kondensator
EP2955264A1 (de) * 2014-06-10 2015-12-16 BSH Hausgeräte GmbH Wäschetrockner
EP2975174A1 (de) * 2014-07-17 2016-01-20 Herbert Kannegiesser GmbH Verfahren zum trocknen von wäsche und trockner
JP2018061616A (ja) * 2016-10-11 2018-04-19 日立アプライアンス株式会社 ドラム式洗濯機
CN108118503A (zh) * 2016-11-30 2018-06-05 博西华电器（江苏）有限公司 干衣机
EP3330432A1 (de) * 2016-11-30 2018-06-06 BSH Hausgeräte GmbH Wäschetrocknermaschine
CN111254668A (zh) * 2018-11-30 2020-06-09 博西华电器（江苏）有限公司 衣物烘干器具
CN109371627A (zh) * 2018-12-14 2019-02-22 长虹美菱股份有限公司 一种滚筒式洗干一体机
EP4074876A1 (de) * 2021-04-16 2022-10-19 Whirlpool Corporation Kondensationssystem für kombiniertes wasch-/trocknungsgerät

Also Published As

Publication number Publication date
EP2019160B1 (de) 2010-09-22
DE602007009374D1 (de) 2010-11-04

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