EP1199397A2 - Sèche-linge - Google Patents

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Publication number
EP1199397A2
EP1199397A2 EP01119419A EP01119419A EP1199397A2 EP 1199397 A2 EP1199397 A2 EP 1199397A2 EP 01119419 A EP01119419 A EP 01119419A EP 01119419 A EP01119419 A EP 01119419A EP 1199397 A2 EP1199397 A2 EP 1199397A2
Authority
EP
European Patent Office
Prior art keywords
water
clothes drying
vessel
drain pump
clothes
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.)
Withdrawn
Application number
EP01119419A
Other languages
German (de)
English (en)
Other versions
EP1199397A3 (fr
Inventor
Luca Bertolin
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.)
Electrolux Zanussi SpA
Original Assignee
Electrolux Zanussi 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 Electrolux Zanussi SpA filed Critical Electrolux Zanussi SpA
Publication of EP1199397A2 publication Critical patent/EP1199397A2/fr
Publication of EP1199397A3 publication Critical patent/EP1199397A3/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention refers to a clothes drying machine and, in particular to an automatic combined machine adapted to wash and/or dry the clothes.
  • Combined clothes washing and drying machines are largely known to generally comprise a vessel, or tub, adapted to contain, inside a rotating drum housed therein, the clothes that can be washed, rinsed, spin-extracted and/or dried there thanks to the provision of appropriate water carrying and handling circuits, as well as a drying circuit by means of which heated-up air that becomes progressively laden with the moisture subtracted from the clothes contained in the tub is caused to circulate through or in correspondence of condenser means for the condensation of said moisture.
  • the condenser is cooled by means of a moderate flow of water from the mains, which is then conveyed on to the bottom of the washing vessel together with the water resulting from the condensation of the moisture.
  • the water that so collects in the washing vessel is let out by the same drain pump that also is used to discharge the washing and the rinsing water at the end of the respective operation phases of the machine.
  • said drain pump In order to let off such cooling and condensation water from the washing vessel of the machine in such a manner as to prevent it from undesirably wetting the clothes being dried, said drain pump is substantially caused to operate throughout the drying phase in a continuous manner and, therefore, under precarious priming conditions, since it is designed and rated on the basis of the relatively high flow rate it is required to handle for discharging the washing and rinsing water.
  • the drain pump tends to generate an undesirably high noise, uses electric energy and is practically subject to an anomalous state of operation which alters the reliability thereof.
  • the machine is preferably a combined clothes washing a drying machine that mainly comprises, inside an outer casing (not shown), a washing vessel 1 that houses a clothes-holding drum 2 which is adapted to rotate at different revolving speeds to carry out, under the control of a programme sequence control unit 3, a sequence of operating phases in which the clothes are washed, rinsed, spin-extracted, dried, etc.
  • the bottom 4 of the vessel 1 is connected to a drain 5 via a drain pump 5 adapted to let off, at the end of the respective phases, the washing and the rinsing water.
  • the machine In order to perform its clothes drying duty, the machine is preferably provided with a condenser 7, through which there is conveyed, via a supply pipe 8 provided with electromagnetic valve 9, or the like, a flow of water taken in from the mains to condenser cooling purposes.
  • the condenser 7 is preferably of the type having an upper inlet 10 connected to the pipe 8, as well as a lower opening 11 connected to the lower portion of the vessel 1.
  • the condenser 7 is supplied in a substantially continuous manner with a moderate flow of water from the mains, which substantially cools down the same condenser and eventually flows out from the opening 11 so as to collect onto the bottom 4 of the vessel.
  • a fan 12 causes a flow of air to be circulated, in which said air is first heated up by an electric heating element 14, or the like, and then flows into the vessel 1 to remove the moisture released by the clothes being dried.
  • the hot moisture-laden air enters the condenser 7 through the opening 11 and there it bubbles through the cooling water.
  • the moisture has therefore a way to condense in the condenser 7 and, through the opening 11, collects then in a liquid form onto the bottom 4 of the vessel together with the cooling water in view of being let off by means of the drain pump 6.
  • the programme sequence control unit 3 of the machine is set in such a manner as to ensure that, during the clothes drying phase, the drain pump 6 is normally de-energized, while the same pump is then energized temporarily, so as to substantially let off the water collecting onto the bottom 4 of the vessel 1, only when said water reaches up to a threshold level L that is slightly lower than the base 15 of the rotating drum 2.
  • such a temporary operation of the drain pump 6 may be time-controlled through a control output 16 of the programme sequence control unit 3, on the basis of statistical, experimentally found data.
  • the level of the water in the vessel 1 is detected by a sensor 17, which may for instance comprise an analogue pressure switch, or the like, and in a per sè known manner is capable of driving the programme sequence control unit 3 with a signal that is representative of said water level.
  • the programme sequence control unit 3 triggers, ie. energizes in a most accurate manner the drain pump 6 when said sensor 17 detects the above cited water level L, while it then de-energizes the same pump as soon as the level of the water in the vessel decreases to a pre-established minimum (practically nil) value.
  • the drain pump 6 will be operated repeatedly, whenever the water in the vessel reaches up to said level L, ie. only slightly in advance of its being able to undesirably wet the clothes being dried inside the rotating drum 2, for short intervals of time as required to just let off the same water.
  • the drain pump 6 is able to operate under adequate priming conditions that are effective in improving the performance and the efficiency thereof, reduce the noise generated thereby, and conclusively boost the durability thereof.
  • the noise generated by the drain pump 6 is not only reduced in its intensity, but also in its duration, since the same pump only operates for short intervals of time, as mentioned above, which also means a corresponding reduction in energy usage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
EP01119419A 2000-10-16 2001-08-11 Sèche-linge Withdrawn EP1199397A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000PN000062A ITPN20000062A1 (it) 2000-10-16 2000-10-16 Macchina asciugabiancheria perfezionata
ITPN000062 2000-10-16

Publications (2)

Publication Number Publication Date
EP1199397A2 true EP1199397A2 (fr) 2002-04-24
EP1199397A3 EP1199397A3 (fr) 2003-03-05

Family

ID=11453186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01119419A Withdrawn EP1199397A3 (fr) 2000-10-16 2001-08-11 Sèche-linge

Country Status (2)

Country Link
EP (1) EP1199397A3 (fr)
IT (1) ITPN20000062A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2149635A1 (fr) 2008-08-01 2010-02-03 Electrolux Home Products Corporation N.V. Machine à laver sèche-linge dotée d'un condensateur intégré au groupe de lavage
CN114606739A (zh) * 2022-03-18 2022-06-10 珠海格力电器股份有限公司 一种带排水泵的干衣设备的烘干控制方法及干衣设备
CN116219687A (zh) * 2021-12-06 2023-06-06 重庆海尔滚筒洗衣机有限公司 干衣机及其排水控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404727A1 (de) * 1974-02-01 1975-08-07 Licentia Gmbh Waeschebehandlungsmaschine
DE2654976A1 (de) * 1976-12-03 1978-06-08 Bosch Siemens Hausgeraete Zum trocknen eingerichtete waeschebehandlungsmaschine
US4112590A (en) * 1975-07-02 1978-09-12 August Lepper, Maschinen- Und Apparatebau Gmbh Combined drum washer and drying arrangement
EP0816549A2 (fr) * 1996-06-26 1998-01-07 CANDY S.p.A. Machine à laver domestique comportant un circuit fermé de séchage, condensation à air et un filtre autonettoyant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404727A1 (de) * 1974-02-01 1975-08-07 Licentia Gmbh Waeschebehandlungsmaschine
US4112590A (en) * 1975-07-02 1978-09-12 August Lepper, Maschinen- Und Apparatebau Gmbh Combined drum washer and drying arrangement
DE2654976A1 (de) * 1976-12-03 1978-06-08 Bosch Siemens Hausgeraete Zum trocknen eingerichtete waeschebehandlungsmaschine
EP0816549A2 (fr) * 1996-06-26 1998-01-07 CANDY S.p.A. Machine à laver domestique comportant un circuit fermé de séchage, condensation à air et un filtre autonettoyant

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2149635A1 (fr) 2008-08-01 2010-02-03 Electrolux Home Products Corporation N.V. Machine à laver sèche-linge dotée d'un condensateur intégré au groupe de lavage
RU2517009C2 (ru) * 2008-08-01 2014-05-27 Электролюкс Хоум Продактс Корпорейшн Н.В. Стиральная машина с сушкой, в которой конденсационное устройство встроено в стиральный блок
CN116219687A (zh) * 2021-12-06 2023-06-06 重庆海尔滚筒洗衣机有限公司 干衣机及其排水控制方法
WO2023103834A1 (fr) * 2021-12-06 2023-06-15 重庆海尔滚筒洗衣机有限公司 Sèche-linge et son procédé de commande de drainage
CN114606739A (zh) * 2022-03-18 2022-06-10 珠海格力电器股份有限公司 一种带排水泵的干衣设备的烘干控制方法及干衣设备
CN114606739B (zh) * 2022-03-18 2022-12-06 珠海格力电器股份有限公司 一种带排水泵的干衣设备的烘干控制方法及干衣设备

Also Published As

Publication number Publication date
EP1199397A3 (fr) 2003-03-05
ITPN20000062A1 (it) 2002-04-16

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