US20100235999A1 - Method for treatment of laundry and washing machine suitable for this purpose - Google Patents

Method for treatment of laundry and washing machine suitable for this purpose Download PDF

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Publication number
US20100235999A1
US20100235999A1 US12/665,778 US66577808A US2010235999A1 US 20100235999 A1 US20100235999 A1 US 20100235999A1 US 66577808 A US66577808 A US 66577808A US 2010235999 A1 US2010235999 A1 US 2010235999A1
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US
United States
Prior art keywords
laundry
lye
heating
washing
washing 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.)
Abandoned
Application number
US12/665,778
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English (en)
Inventor
Harald Moschütz
Ingo Schulze
Andreas Hanau
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of US20100235999A1 publication Critical patent/US20100235999A1/en
Assigned to BSH BOSCH UND SIEMENS HAUSGERAETE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERAETE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHULZE, INGO, HANAU, ANDREAS, MOSCHUETZ, HARALD
Assigned to BSH Hausgeräte GmbH reassignment BSH Hausgeräte GmbH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BSH Bosch und Siemens Hausgeräte GmbH
Assigned to BSH Hausgeräte GmbH reassignment BSH Hausgeräte GmbH CORRECTIVE ASSIGNMENT TO REMOVE USSN 14373413; 29120436 AND 29429277 PREVIOUSLY RECORDED AT REEL: 035624 FRAME: 0784. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Assignors: BSH Bosch und Siemens Hausgeräte GmbH
Abandoned 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
    • 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
    • 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
    • D06F2103/04—Quantity, e.g. weight or variation of 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/40—Steam generating arrangements

Definitions

  • the invention relates to a method for the treatment of laundry in a washing machine and a washing machine especially suited to carrying out said method.
  • the laundry to be washed is treated by an amount of water which is sufficient to saturate the laundry with water, and an additional minimum amount of free liquor, generally two to three liters, which enables a material exchange between the liquor absorbed by the laundry and the free liquor.
  • the setting of the amount of water is generally ensured in individual cases by a suitable method for regulating the water level in the drum and matching the amount to the absorption capacity of the laundry.
  • the free liquor results from a subtraction of the amount of water absorbed by the laundry from the amount of water added to the washing machine.
  • Cotton material holds approximately 200% of its own weight, so that a 6 kg load of cotton material absorbs approximately 12 liters of water.
  • the energy consumption of a washing machine is essentially determined by the energy required to heat the water. A reduction in the amount of water in a washing machine would therefore be desirable, especially a reduction in the amount of free liquor.
  • the heat transport from the heater into the laundry must be guaranteed by the free liquor. It is therefore difficult to achieve any reduction in the free liquor and thus a reduction in the energy consumption.
  • An object of the invention is therefore the provision of a method for the treatment of laundry in a washing machine by means of which energy and/or water can be saved compared with the known methods.
  • An object of the invention is furthermore to disclose a washing machine suitable for performing this method.
  • the invention therefore refers to a method for the treatment of laundry using washing lye in a washing machine comprising a lye discharge system disposed on the base of a lye container, a rotary-mounted drum and a heating device for the direct heating of a load of laundry containing the washing lye, with the method comprising the following steps.
  • step c) is not carried out until after step b) has been completed.
  • the temperature T w of the water in step c) preferably does not exceed 30° C.
  • the direct heating of the washing lye contained in the laundry preferably takes place by means of hot foam, hot air, steam and/or electromagnetic radiation which has/have been achieved by using the heating device.
  • the heating device for direct heating of a load containing the washing lye can be fitted at various points in the inventive washing machine.
  • the heating device is arranged in the lye container, especially in the drum.
  • the hot foam is preferably generated by rotating the drum at a speed U 1 , which is less than the contact speed U A of the laundry, the heating device is switched on and the foam is heated.
  • the contact speed U A of the laundry is the speed of the drum at which the laundry can lie against an inner wall of the drum, for example a speed in the 300 to 500 r.p.m. range.
  • heating takes place using hot foam, a direct heating of the laundry can be achieved.
  • the temperature gradient can be adjusted by means of the output of the heating device and the density of the foam. Because the surface of the laundry is heated first, it is advantageous if the laundry is intensively turned over. This can advantageously take place by a reversing operation of the drum at a speed of 30 to 100 r.p.m.
  • the heating in step b) using electromagnetic radiation is preferably achieved by using a microwave heater and/or an infrared radiator (IR radiator).
  • IR radiator infrared radiator
  • the temperature gradient can be set by means of the microwave power.
  • care must be taken to make sure that no short circuits occur due to any metallic particles contained in the laundry.
  • certain man-made fibers may not be stable when heated using microwaves. Damage to laundry can occur, for instance where there are seams of polyester.
  • the temperature gradient can be set by means of the output IR radiator. Especially because the surface of the textile items is heated, an intensive distribution of the laundry by a reversing operation of the drum is advantageous.
  • the heating of the wetted laundry using hot air has the advantage that a temperature gradient can be set by means of which heat losses can be reduced.
  • a heater known from a tumble dryer can be used to generate the hot air.
  • the use of hot air is therefore particularly advantageous for combination units which combine the function of a washing machine and a tumble dryer.
  • the air When heating using hot steam, the air can be saturated with steam (saturated steam) or be unsaturated at the applied temperature.
  • saturated steam saturated steam
  • unsaturated steam unsaturated at the applied temperature.
  • the advantage of the use of hot steam is the improved heat transmission between the heater and water.
  • the drum in step b) is preferably operated in a reversing operating mode for a period of 10 to 30 minutes at a speed of 30 to 100 r.p.m., preferably 40 to 70 r.p.m.
  • a reversing operating mode for a period of 10 to 30 minutes at a speed of 30 to 100 r.p.m., preferably 40 to 70 r.p.m.
  • step c) the dirt still remaining in the laundry and essentially only slightly dissolved in step b) can be rinsed out.
  • step c With the completion of step c), the actual washing operation is generally finished. In a further program sequence, the laundry can then be rinsed and spun in a conventional wash program.
  • the laundry of the load receives no more than the amount of water required for saturating the laundry with washing lye.
  • the ratio of the amount (a2) to the amount (a3) is in the 0.5 to 0.9 range.
  • the ratio of the amount (a2) to the amount (a3) is preferably in the 0.5 to 0.7 range.
  • the saturation amount (a3) of water is approximately double a load (a1). From man-made fibers, which absorb water to a lesser degree, the saturation amount (a3) can be significantly lower.
  • the values for the saturation amount (a3) are known per se, so that the amount of water (a2) can be preset in a wash program.
  • the load (a1) can be determined using known means.
  • a first sensor can be used to determine the amount of liquid or foam present in the lye container, it being possible for the sensor signal of said signal to be tracked during the process.
  • a hydrostatic pressure p for example measured in step a) with the aid of the first sensor, can be compared with the filled amount of water or washing lye present.
  • the laundry present in the drum soaks up water or washing lye, which therefore cannot contribute to an increase in the hydrostatic pressure.
  • the batch of laundry (load)(a1) and its degree of saturation (degree of wetting) can be determined.
  • the duration of the wetting in step a) can be very precisely adjusted to the predetermined batch of laundry. Therefore, a wetting of the batch of laundry adequate for the inventive method can generally be signaled to a program, so that step a) is ended and step b) can be started.
  • monitoring of a temperature in the drum is advantageous.
  • a second sensor for determining the temperature in the washing machine is fitted in the drum.
  • the amount of water or washing lye to be used in the inventive method can be additionally reduced if during step a) and/or step b) the drum is rotated at a higher speed.
  • the water/washing lye contained in the laundry is centrifuged and a reduction in the amount of water or washing lye required for saturation is achieved.
  • the object of the invention is furthermore a washing machine with a program controller for controlling a program sequence, a drum rotatably mounted in a lye container, a lye discharge system arranged on the base of the lye container and a drive motor for the drum, with the washing machine additionally having a heating device for direct heating of a load (a1) of laundry containing the washing lye.
  • the heating device is a device for generating steam or hot air.
  • the heating device is a microwave heating device and/or an IR radiator.
  • the inventive washing machine preferably has a first sensor for determining an amount of liquid or foam present in the lye container, with it being preferably possible to track the sensor signal during the process.
  • a second sensor for determining a temperature in the drum is arranged in the inventive washing machine.
  • the invention has the advantage that a substantially lower amount of water or washing lye is heated compared with a conventional method. This amount corresponds essentially to the amount necessary for saturating the laundry, which can be further reduced by a suitable fast rotation of the drum during the heating. This enables a substantial saving of water and energy.
  • FIG. 1 is a schematic representation of the parts of an embodiment of a washing machine relevant for the following description, in which a method as described above can be carried out. Other embodiments are conceivable.
  • the washing machine of the embodiment shown in FIG. 1 has a lye container 1 in which a drum 2 is rotatably mounted and can be driven by a drive motor 14 .
  • the rotary axis 3 of the drum 2 is directed forwards and upwards from the horizontal at a small angle (e.g. 13°), so that easier access and a view of the inside of the drum 2 are provided.
  • Laundry vanes 4 enable a distribution of the laundry 7 when the drum 2 is rotating.
  • Scoops 5 enable an intensive rinsing of the cleaned laundry 7 with water 6 .
  • a heating device 16 is fitted outside of the lye container 1 and drum 2 .
  • the heating device 16 shown in FIG. 1 can especially provide hot air or steam.
  • foam introduced in step b) of the method described above and generated with the laundry 7 by rotation of the drum 2 , can be heated by a heating device 13 arranged on the base of the lye container 1 .
  • a heating device 13 arranged on the base of the lye container 1 .
  • the rotating drum 2 can also entrain air in the washing lye, which is located in the lye container 1 under the drum 2 , and thus produce foam.
  • the formation of foam can be assisted by adding a suitable detergent to the washing lye.
  • the washing machine in FIG. 1 also has a lye supply system 8 , 9 , 10 , which includes a water connecting fitting for the domestic water supply system 8 , an electrically controlled valve 9 and a supply pipe 10 to the lye container 1 , with it also being possible for the supply pipe to be routed if necessary via a detergent flushing device (flushing tray) 11 , from which the supply water can transport a detergent, contained therein, into the lye container 1 .
  • the valve 9 and also the heating device 13 , can be controlled by a controller (program controller) 12 relative to a program, which can be linked to a time program and/or the achievement of certain measured values of parameters within the washing machine such as the speed of the drum 2 .
  • a lye discharge system 18 with any necessary pipes, including a drain valve and lye pump is, because it is known per se, shown only schematically as an overview by means of an arrow.
  • a first sensor 15 for measurement of hydrostatic pressure p is provided in the lye container 1 .
  • a second sensor 17 for determining a temperature is arranged in the drum. The second sensor 17 can also of course be located in an intermediate space between the lye container 1 and the drum 2 .
  • step a) of the method described above for treating laundry 7 water is introduced in an amount which is adequate to fill a space between the lye container 1 and the drum 2 at a bottom end of the drum with water and be able to wet the laundry 7 .
  • This washing lye is gradually absorbed by the laundry 7 until this has reached saturation wetting. There is no need to add further washing lye or water.
  • the heating of the laundry 7 with the washing lye absorbed therein takes place directly and without the involvement of residual washing lye which has not been absorbed. In this way, dirt in the laundry 7 is initially dissolved, but not yet completely flushed out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Treatment Of Fiber Materials (AREA)
US12/665,778 2007-06-20 2008-05-27 Method for treatment of laundry and washing machine suitable for this purpose Abandoned US20100235999A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007028212.7 2007-06-20
DE102007028212.7A DE102007028212B4 (de) 2007-06-20 2007-06-20 Verfahren zur Behandlung von Wäschestücken sowie hierzu geeignete Waschmaschine
PCT/EP2008/056472 WO2008155196A2 (de) 2007-06-20 2008-05-27 Verfahren zur behandlung von wäschestücken sowie hierzu geeignete waschmaschine

Publications (1)

Publication Number Publication Date
US20100235999A1 true US20100235999A1 (en) 2010-09-23

Family

ID=39967941

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/665,778 Abandoned US20100235999A1 (en) 2007-06-20 2008-05-27 Method for treatment of laundry and washing machine suitable for this purpose

Country Status (8)

Country Link
US (1) US20100235999A1 (zh)
EP (1) EP2158350B1 (zh)
CN (1) CN101711295B (zh)
DE (1) DE102007028212B4 (zh)
EA (1) EA017035B1 (zh)
ES (1) ES2686139T3 (zh)
PL (1) PL2158350T3 (zh)
WO (1) WO2008155196A2 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150267341A1 (en) * 2014-03-24 2015-09-24 General Electric Company Washing machine appliances and methods for operating the same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2540896B1 (en) * 2011-06-30 2016-04-13 Electrolux Home Products Corporation N.V. Method for washing laundry in a laundry washing machine
DE102013225113B4 (de) * 2013-12-06 2019-01-31 BSH Hausgeräte GmbH Verfahren zur Behandlung von Wäsche mit verbesserter Benetzungsphase und hierzu geeignete Waschmaschine
WO2016040966A1 (en) * 2014-09-10 2016-03-17 King, Denis John Washing machine
CN114045641B (zh) * 2016-08-25 2024-04-05 Lg电子株式会社 衣物处理装置
CN112064291B (zh) * 2019-05-23 2023-11-17 博西华电器（江苏）有限公司 洗衣机及其控制方法
CN112411124B (zh) * 2020-10-28 2021-11-05 珠海格力电器股份有限公司 一种衣物处理设备的漂洗控制方法及衣物处理设备
DE102023102782A1 (de) 2023-02-06 2024-08-08 Zöllner GmbH Verfahren zur Reinigung von Wäsche und Waschsystem hierzu

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US2548651A (en) * 1944-03-20 1951-04-10 Dole Valve Co Fluid control system for laundering apparatus
US3048027A (en) * 1958-09-11 1962-08-07 Maytag Co Automatic dry control for combination washer-drier
US5385037A (en) * 1992-06-24 1995-01-31 Samsung Electronics Co., Ltd. Fully-automated washing machine
US6125490A (en) * 1998-10-19 2000-10-03 Whirlpool Corporation System for controlling energy and water use in an automatic washer
US6272770B1 (en) * 1999-12-15 2001-08-14 American Dryer Corporation Washer/dryer combination with cold water and vacuum
US20010052249A1 (en) * 1999-06-22 2001-12-20 Whah Kenneth N. Control for and automatic washer with spray pretreatment
US20020133886A1 (en) * 2000-06-05 2002-09-26 The Procter & Gamble Company Washing apparatus
US20050034491A1 (en) * 2001-12-21 2005-02-17 Takako Tazawa Washing machine
US20050092035A1 (en) * 2003-11-04 2005-05-05 Shin Soo H. Washing apparatus and control method thereof
US20050241345A1 (en) * 2004-05-03 2005-11-03 Daewoo Electronics Corporation Washing machine equipped with a radiation drying unit
US20070283507A1 (en) * 2006-06-09 2007-12-13 Nyik Siong Wong Steam washing machine operation method having dry spin pre-wash
US20080190149A1 (en) * 2005-05-23 2008-08-14 Lg Electronics Inc. Steam Generator Having Press-Sensor for Drum Washing Machine and Control Method as the Same
US20080276382A1 (en) * 2007-05-07 2008-11-13 Whirlpool Corporation Fabric Treatment Appliance Control Panel and Associated Steam Operations
US7627920B2 (en) * 2006-06-09 2009-12-08 Whirlpool Corporation Method of operating a washing machine using steam

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DE2126568A1 (de) * 1971-05-28 1972-12-07 Ostertag K Verfahren zum Waschen von Wäsche
AT372418B (de) 1976-04-13 1983-10-10 Maureder Engelbert Vorrichtung zum waschen und wahlweisen trocknen von waesche od. dgl.
DE4104450A1 (de) 1991-02-14 1992-08-20 Manfred Stoll Verfahren und einrichtung zum waschen von textilien in einem waschvollautomaten nach dem doppeltrommelprinzip und recyclingbehaelter zum speichern von flotten
DE19743508A1 (de) 1997-10-01 1999-04-08 Bosch Siemens Hausgeraete Verfahren zum Erhitzen der Waschlauge in einer Waschmaschine
DE19908804C5 (de) 1999-03-01 2014-05-15 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine und automatisch gesteuerte Waschmaschine hierfür
EP1861533B1 (en) 2005-03-25 2014-11-26 LG Electronics Inc. Method for washing of washer
KR100672322B1 (ko) * 2005-03-25 2007-01-24 엘지전자 주식회사 세탁 장치의 세탁 방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548651A (en) * 1944-03-20 1951-04-10 Dole Valve Co Fluid control system for laundering apparatus
US3048027A (en) * 1958-09-11 1962-08-07 Maytag Co Automatic dry control for combination washer-drier
US5385037A (en) * 1992-06-24 1995-01-31 Samsung Electronics Co., Ltd. Fully-automated washing machine
US6125490A (en) * 1998-10-19 2000-10-03 Whirlpool Corporation System for controlling energy and water use in an automatic washer
US20010052249A1 (en) * 1999-06-22 2001-12-20 Whah Kenneth N. Control for and automatic washer with spray pretreatment
US6272770B1 (en) * 1999-12-15 2001-08-14 American Dryer Corporation Washer/dryer combination with cold water and vacuum
US20020133886A1 (en) * 2000-06-05 2002-09-26 The Procter & Gamble Company Washing apparatus
US20050034491A1 (en) * 2001-12-21 2005-02-17 Takako Tazawa Washing machine
US20050092035A1 (en) * 2003-11-04 2005-05-05 Shin Soo H. Washing apparatus and control method thereof
US20050241345A1 (en) * 2004-05-03 2005-11-03 Daewoo Electronics Corporation Washing machine equipped with a radiation drying unit
US20080190149A1 (en) * 2005-05-23 2008-08-14 Lg Electronics Inc. Steam Generator Having Press-Sensor for Drum Washing Machine and Control Method as the Same
US20070283507A1 (en) * 2006-06-09 2007-12-13 Nyik Siong Wong Steam washing machine operation method having dry spin pre-wash
US7627920B2 (en) * 2006-06-09 2009-12-08 Whirlpool Corporation Method of operating a washing machine using steam
US20080276382A1 (en) * 2007-05-07 2008-11-13 Whirlpool Corporation Fabric Treatment Appliance Control Panel and Associated Steam Operations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150267341A1 (en) * 2014-03-24 2015-09-24 General Electric Company Washing machine appliances and methods for operating the same
US10745842B2 (en) * 2014-03-24 2020-08-18 Haier Us Appliance Solutions, Inc. Washing machine appliances and methods for operating the same

Also Published As

Publication number Publication date
EP2158350B1 (de) 2018-07-11
DE102007028212A1 (de) 2008-12-24
PL2158350T3 (pl) 2019-02-28
ES2686139T3 (es) 2018-10-16
CN101711295A (zh) 2010-05-19
EA017035B1 (ru) 2012-09-28
EA201070016A1 (ru) 2010-06-30
WO2008155196A2 (de) 2008-12-24
EP2158350A2 (de) 2010-03-03
CN101711295B (zh) 2014-11-05
DE102007028212B4 (de) 2022-03-24
WO2008155196A3 (de) 2009-02-19

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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MOSCHUETZ, HARALD;SCHULZE, INGO;HANAU, ANDREAS;SIGNING DATES FROM 20100409 TO 20100413;REEL/FRAME:026727/0037

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Effective date: 20150323

STCB Information on status: application discontinuation

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