EP1970482A1 - Sèche-linge domestique - Google Patents

Sèche-linge domestique Download PDF

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Publication number
EP1970482A1
EP1970482A1 EP07104075A EP07104075A EP1970482A1 EP 1970482 A1 EP1970482 A1 EP 1970482A1 EP 07104075 A EP07104075 A EP 07104075A EP 07104075 A EP07104075 A EP 07104075A EP 1970482 A1 EP1970482 A1 EP 1970482A1
Authority
EP
European Patent Office
Prior art keywords
tank
water
laundry
drying tub
hot
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
EP07104075A
Other languages
German (de)
English (en)
Other versions
EP1970482B1 (fr
Inventor
Ugo Favret
Flavio Noviello
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 Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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
Priority to EP07104075A priority Critical patent/EP1970482B1/fr
Priority to DE602007008521T priority patent/DE602007008521D1/de
Priority to PL07104075T priority patent/PL1970482T3/pl
Priority to ES07104075T priority patent/ES2349021T3/es
Priority to AT07104075T priority patent/ATE478187T1/de
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to PCT/EP2008/001614 priority patent/WO2008110271A1/fr
Priority to RU2009137797/12A priority patent/RU2458197C2/ru
Publication of EP1970482A1 publication Critical patent/EP1970482A1/fr
Application granted granted Critical
Publication of EP1970482B1 publication Critical patent/EP1970482B1/fr
Active 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
    • 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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/203—Laundry conditioning 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
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • 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
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves

Definitions

  • the present invention relates to a home laundry drier.
  • the present invention relates to a rotary-drum home laundry drier, to which the following description refers purely by way of example.
  • rotary-drum laundry driers substantially comprise a substantially parallelepiped-shaped outer box casing; a cylindrical laundry drying tub fixed horizontally inside the casing, directly facing a laundry loading and unloading opening formed in the front face of the casing; a door hinged to the front face of the casing to rotate to and from a work position closing the opening in the front face to seal the cylindrical tub; a cylindrical, perforated-wall, laundry drum housed in axially rotating manner inside the drying tub; and an electric motor for rotating the laundry drum about its longitudinal axis inside the drying tub.
  • Rotary-drum laundry driers of the above type also comprise a closed-circuit, hot-air generator designed to circulate inside the drying tub a stream of hot air with a low moisture level and which flows through the laundry drum and over the laundry inside the drum to rapidly dry the laundry.
  • the closed-circuit, hot-air generator comprises an air/air heat exchanger and an electric heater located one after the other along an air recirculating conduit, the two ends of which are connected to the drying tub, on opposite sides of the laundry drum.
  • the air/air heat exchanger provides for rapidly cooling the airflow from the drying tub to condense the surplus moisture in the airflow; and the heater provides for rapidly heating the airflow from the heat exchanger back to the drying tub, so that the air flowing into the drying tub is heated rapidly to a temperature higher than or equal to that of the same air flowing out of the drying tub.
  • Some more recently marketed rotary-drum driers also feature a pressurized-steam generator which, at the end of the drying cycle, feeds a jet of steam into the drying tub to eliminate or at least greatly reduce creasing of the fabrics during the drying cycle.
  • boilers capable of producing steam at the pressure and temperature demanded for use in driers are extremely expensive, and so greatly increase the overall manufacturing cost of the drier.
  • a home laundry drier as claimed in Claim 1 and preferably, though not necessarily, in any one of the Claims depending directly or indirectly on Claim 1.
  • Number 1 in the attached drawing indicates as a whole a home laundry drier substantially comprising a preferably, though not necessarily, parallelepiped-shaped outer box casing 2; an airtight, preferably, though not necessarily, cylindrical laundry drying tub or chamber 3 for housing the laundry to be dried, and which is fixed substantially horizontally inside casing 2, directly facing a laundry loading and unloading opening 2a formed in the front face of casing 2; a door (not shown) hinged to the front face of casing 2 to rotate to and from a work position closing opening 2a in the front face to seal the laundry drying tub 3; and a closed-circuit, hot-air generator 4 housed inside casing 2 and designed to circulate inside drying tub 3 a stream of hot air having a low moisture level, and which flows over and rapidly dries the laundry inside the tub.
  • Drier 1 preferably, though not necessarily, also comprises a preferably, though not necessarily, cylindrical laundry drum 5 for housing the laundry to be dried, and which has perforated walls, or at least walls permeable to air, and is housed in axially rotating manner and preferably, though not necessarily, horizontally inside drying tub 3; and an electric motor 6 or similar, for rotating laundry drum 5 about its longitudinal axis L inside drying tub 3.
  • longitudinal axis L coincides with the longitudinal axis of drying tub 3.
  • hot-air generator 4 provides for gradually drawing air from drying tub 3; extracting surplus moisture from the hot air drawn from drying tub 3; heating the dehumidified air to a predetermined temperature, normally higher than the temperature of the air from drying tub 3; and feeding the heated, dehumidified air back into drying tub 3, where it flows over, to rapidly dry, the laundry inside the tub.
  • hot-air generator 4 provides for continually dehumidifying and heating the air circulating inside drying tub 3 to rapidly dry the laundry inside the tub, and substantially comprises:
  • drier 1 also comprises an electronic central control unit 14, which controls electric motor 6, fan 8, heat exchanger 9 (or, rather, the cooling fan 15 of heat exchanger 9, which generates cold airflow w through the exchanger) and heater 10 in predetermined manner, as memorized inside it, to perform the user-selected drying cycle.
  • hot-air generator 4 also comprises a water tank 16 containing a predetermined amount of preferably, though not necessarily, demineralized water; an electric heater 17 (in the example shown, a resistor) housed inside tank 16 to boil and convert the water inside tank 16 to steam; and a steam exhaust manifold 18 connected to recirculating conduit 7 preferably, though not necessarily, upstream from heater 10 to feed the steam produced in tank 16 to drying tub 3 via the end portion of recirculating conduit 7.
  • an electric heater 17 in the example shown, a resistor housed inside tank 16 to boil and convert the water inside tank 16 to steam
  • a steam exhaust manifold 18 connected to recirculating conduit 7 preferably, though not necessarily, upstream from heater 10 to feed the steam produced in tank 16 to drying tub 3 via the end portion of recirculating conduit 7.
  • steam exhaust manifold 18 defines, with the end portion of recirculating conduit 7, a straight, substantially vertical portion, which feeds the steam produced in tank 16 to drying tub 3 by exploiting the flue effect produced by the lower density of the hot air produced at heater 10.
  • Electronic central control unit 14 obviously controls heater 17 and the other component parts of hot-air generator 4, such as fan 8 and/or fan 15 of heat exchanger 9, so as to only feed steam into drying tub 3 when required, and possibly also regulate the amount of steam produced as a function of the selected drying cycle.
  • hot-air generator 4 preferably, though not necessarily, also comprises a process water recovery circuit 19, which, under the control of electronic central control unit 14, extracts the liquid distilled water produced, when the drier is running, at the bottom of heat exchanger 9 by condensation of the surplus moisture in airflow f from drying tub 3, and feeds the distilled water to tank 16 for use in producing steam.
  • process water recovery circuit 19 which, under the control of electronic central control unit 14, extracts the liquid distilled water produced, when the drier is running, at the bottom of heat exchanger 9 by condensation of the surplus moisture in airflow f from drying tub 3, and feeds the distilled water to tank 16 for use in producing steam.
  • process water recovery circuit 19 is defined by an electric pump, the intake side of which is connected to the bottom of heat exchanger 9 by a first connecting pipe, and the delivery side of which is connected to tank 16 by a second connecting pipe.
  • the bottom of heat exchanger 9 may be higher than tank 16, and process water recovery circuit 19 is defined by a connecting pipe connecting the two components directly, so that the distilled water flows directly by force of gravity into tank 16.
  • tank 16 therefore also acts as a catch vessel for the distilled water produced by condensing the surplus moisture in airflow f from drying tub 3.
  • hot-air generator 4 also comprises an auxiliary water tank 20 placed inside casing 2 above tank 16, and a water draining circuit 21 which, under the control of electronic central control unit 14, drains the water from tank 16 to tank 20 so as to adjust the level of distilled water inside tank 16.
  • hot-air generator 4 is provided with a water level sensor 22 located inside tank 16 and connected to central control unit 14, whereas water exhaust circuit 21 comprises an electric pump 24 having its intake side in direct communication with the bottom of tank 16, and a first connecting pipe 25 which connects the delivery side of pump 24 directly to tank 20.
  • Central control unit 14 switches on and off the electric pump 24 on the basis of the signals received by the water level sensor 22.
  • water exhaust circuit 21 also comprises a second connecting pipe 26 which connects the bottom of tank 20 to the tank 16 down below, and an electric actuated valve 27 which is placed along the connecting pipe 26 and controls the outflow of the water from tank 20 to tank 16.
  • central control unit 14 is also capable of opening and closing valve 27 on the basis of the signals received by the water level sensor 22
  • central control unit 14 switches on pump 24 when the water level inside tank 16 exceeds a predefined upper threshold value, and opens the electric actuated valve 27 to feed the water again into tank 16 when the water level inside tank 16 lowers below a predefined lower threshold value.
  • central control unit 14 switches off pump 24 before the water level inside tank 16 lowers below the lower threshold value, and closes the electric actuated valve 27 to stop the flow of distilled water into tank 16 before the water level inside tank 16 exceeds the upper threshold value.
  • water draining circuit 21 keeps the level of the distilled water inside tank 16 between the upper and the lower threshold value so as to avoid overheating of electric heater 17 and overfilling of tank 16.
  • the water exhaust circuit 21 is also provided with an auxiliary removable water tank 28 which is located inside casing 2 in easy removable manner, and is in communication with tank 20 via a siphon spillway 29 or similar so as to receive the water from tank 20 when the water level inside tank 20 exceeds a predefined upper limit.
  • drier 1 Operation of drier 1 will be clear from the above description, with no further explanation required, other than to state that the steam produced in tank 16 has a temperature of about 100°C, is at ambient pressure, and is fed to drying tub 3 by convection by airflow f.
  • Integrating the steam generator in hot-air generator 4 has countless advantages: first and foremost, the availability of a large amount of ambient-pressure steam at roughly 100°C means drying tub 3 can be filled completely at the end of the drying cycle using the airflow f produced by fan 8, and with no risk of singeing the laundry.
  • hot-air generator 4 uses the moisture condensed in heat exchanger 9 to produce the steam required to eliminate, or at least greatly reduce, creasing of the fabrics during the drying cycle, thus saving the user the inconvenience of periodically filling tank 16 with distilled/demineralized water.
  • the vertical portion defined by exhaust manifold 18 and the end portion of recirculating conduit 7 provides for feeding back into tank 16 the steam droplets condensed on the walls of recirculating conduit 7 when feeding the steam into drying tub 3, with all the advantages this entails in terms of process efficiency.
EP07104075A 2007-03-13 2007-03-13 Sèche-linge domestique Active EP1970482B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE602007008521T DE602007008521D1 (de) 2007-03-13 2007-03-13 Wäschetrockner für den Haushalt
PL07104075T PL1970482T3 (pl) 2007-03-13 2007-03-13 Suszarka do bielizny używana w gospodarstwach domowych
ES07104075T ES2349021T3 (es) 2007-03-13 2007-03-13 Secadora domestica de ropa.
AT07104075T ATE478187T1 (de) 2007-03-13 2007-03-13 Wäschetrockner für den haushalt
EP07104075A EP1970482B1 (fr) 2007-03-13 2007-03-13 Sèche-linge domestique
PCT/EP2008/001614 WO2008110271A1 (fr) 2007-03-13 2008-02-29 Sèche-linge domestique
RU2009137797/12A RU2458197C2 (ru) 2007-03-13 2008-02-29 Бытовая сушилка для белья

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07104075A EP1970482B1 (fr) 2007-03-13 2007-03-13 Sèche-linge domestique

Publications (2)

Publication Number Publication Date
EP1970482A1 true EP1970482A1 (fr) 2008-09-17
EP1970482B1 EP1970482B1 (fr) 2010-08-18

Family

ID=38421184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07104075A Active EP1970482B1 (fr) 2007-03-13 2007-03-13 Sèche-linge domestique

Country Status (7)

Country Link
EP (1) EP1970482B1 (fr)
AT (1) ATE478187T1 (fr)
DE (1) DE602007008521D1 (fr)
ES (1) ES2349021T3 (fr)
PL (1) PL1970482T3 (fr)
RU (1) RU2458197C2 (fr)
WO (1) WO2008110271A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610399A1 (fr) * 2011-12-28 2013-07-03 Electrolux Home Products Corporation N.V. Appareil domestique pour sécher le linge doté d'un réservoir pour liquides
EP2642012A1 (fr) 2012-03-22 2013-09-25 Electrolux Home Products Corporation N.V. Machine à laver le linge et procédé de traitement de linge dans un lave-linge
WO2013182403A1 (fr) * 2012-06-05 2013-12-12 Arcelik Anonim Sirketi Sèche-linge ayant un condenseur refroidi à l'air
EP2821540A1 (fr) * 2013-07-03 2015-01-07 Electrolux Appliances Aktiebolag Appareil domestique de séchage du linge doté d'une unité de buse à vapeur
WO2015096851A1 (fr) * 2013-12-23 2015-07-02 Arcelik Anonim Sirketi Sèche-linge à vapeur pourvu d'une installation de remplissage d'eau améliorée pour un générateur de vapeur

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11102909B2 (en) * 2018-01-12 2021-08-24 Quanta Computer Inc. Front panel air duct
WO2020015914A1 (fr) * 2018-07-19 2020-01-23 Arcelik Anonim Sirketi Pulvérisateur de vapeur
EP4039872A3 (fr) * 2021-02-08 2022-11-02 LG Electronics Inc. Appareil de traitement du linge et procédé de commande correspondant
DE102021104575A1 (de) 2021-02-25 2022-08-25 Miele & Cie. Kg Wärmepumpentrocknungsgerät und Verfahren zum Betreiben eines Wärmepumpentrocknungsgerätes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1469120A1 (fr) * 2003-04-14 2004-10-20 Lg Electronics Inc. Procédé de lavage dans une machine à laver à jet de vapeur
DE102005053702A1 (de) 2004-11-10 2006-06-22 Lg Electronics Inc. Kombinationstrockner und Steuerverfahren für diesen
WO2006101336A1 (fr) * 2005-03-25 2006-09-28 Lg Electronics Inc. Generateur de vapeur et dispositif de lavage et procede associe
EP1734170A1 (fr) * 2005-06-13 2006-12-20 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1616990B1 (fr) * 2004-07-13 2017-08-30 LG Electronics, Inc. Machine à laver avec un appareil générateur de vapeur
KR101253126B1 (ko) * 2005-05-23 2013-04-10 엘지전자 주식회사 드럼세탁기 스팀발생기의 수위센서

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1469120A1 (fr) * 2003-04-14 2004-10-20 Lg Electronics Inc. Procédé de lavage dans une machine à laver à jet de vapeur
DE102005053702A1 (de) 2004-11-10 2006-06-22 Lg Electronics Inc. Kombinationstrockner und Steuerverfahren für diesen
WO2006101336A1 (fr) * 2005-03-25 2006-09-28 Lg Electronics Inc. Generateur de vapeur et dispositif de lavage et procede associe
EP1734170A1 (fr) * 2005-06-13 2006-12-20 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610399A1 (fr) * 2011-12-28 2013-07-03 Electrolux Home Products Corporation N.V. Appareil domestique pour sécher le linge doté d'un réservoir pour liquides
EP2642012A1 (fr) 2012-03-22 2013-09-25 Electrolux Home Products Corporation N.V. Machine à laver le linge et procédé de traitement de linge dans un lave-linge
WO2013139686A1 (fr) * 2012-03-22 2013-09-26 Electrolux Home Products Corporation N.V. Machine de blanchisserie et procédé de traitement de linge dans une machine de blanchisserie
CN104204331A (zh) * 2012-03-22 2014-12-10 伊莱克斯家用产品股份有限公司 洗衣机以及在洗衣机中进行衣物处理的方法
CN104204331B (zh) * 2012-03-22 2017-04-26 伊莱克斯家用产品股份有限公司 洗衣机以及在洗衣机中进行衣物处理的方法
WO2013182403A1 (fr) * 2012-06-05 2013-12-12 Arcelik Anonim Sirketi Sèche-linge ayant un condenseur refroidi à l'air
EP2821540A1 (fr) * 2013-07-03 2015-01-07 Electrolux Appliances Aktiebolag Appareil domestique de séchage du linge doté d'une unité de buse à vapeur
WO2015096851A1 (fr) * 2013-12-23 2015-07-02 Arcelik Anonim Sirketi Sèche-linge à vapeur pourvu d'une installation de remplissage d'eau améliorée pour un générateur de vapeur

Also Published As

Publication number Publication date
RU2458197C2 (ru) 2012-08-10
WO2008110271A1 (fr) 2008-09-18
ATE478187T1 (de) 2010-09-15
EP1970482B1 (fr) 2010-08-18
RU2009137797A (ru) 2011-04-20
PL1970482T3 (pl) 2011-01-31
ES2349021T3 (es) 2010-12-21
DE602007008521D1 (de) 2010-09-30

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