EP1831447B1 - Control method for a drum washing machine - Google Patents

Control method for a drum washing machine Download PDF

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Publication number
EP1831447B1
EP1831447B1 EP05821916.3A EP05821916A EP1831447B1 EP 1831447 B1 EP1831447 B1 EP 1831447B1 EP 05821916 A EP05821916 A EP 05821916A EP 1831447 B1 EP1831447 B1 EP 1831447B1
Authority
EP
European Patent Office
Prior art keywords
washing
drum
washing water
laundry
water
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.)
Not-in-force
Application number
EP05821916.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1831447A1 (en
EP1831447A4 (en
Inventor
Jae Cheol 101-1301 Woosung Apt LYU
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1831447A1 publication Critical patent/EP1831447A1/en
Publication of EP1831447A4 publication Critical patent/EP1831447A4/en
Application granted granted Critical
Publication of EP1831447B1 publication Critical patent/EP1831447B1/en
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
    • 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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • D06F37/14—Ribs or rubbing means forming part of the receptacle
    • D06F37/145—Ribs or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid
    • 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
    • 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
    • D06F39/083—Liquid discharge or recirculation 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
    • 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 drum washing machine, and more particularly, to a control method for a drum washing machine capable of economizing in washing water as well as in electric power through enhancing a control method thereof.
  • a control method for a drum washing machine is that washing is performed by using friction power between a drum rotating by a motor and cloth item, cloths and beddings (hereinafter, "the laundry” in a state of the laundry being introduced within the drum. Thereby, during a washing cycle, the laundry may get little damage, may not be tangled, and washing efficiency may be enhanced.
  • FIGS. 1 and 2 schematically illustrate a related art structure of the conventional drum washing machine.
  • the conventional drum washing machine includes a body case 10, a tub 20 provided within the body case 10, a drum 20 rotatably mounted within the tub 20 and a driving part for driving the drum 30.
  • An opening 11 is formed in front of the body case 10, and is in communication with the drum 30.
  • a door 40 is mounted at a surrounding portion of the opening 11 for opening/ closing the opening 11.
  • a water supply valve 14 connected with an external water pipe and a detergent chamber assembly 15 connected with the water supply valve 14.
  • the detergent chamber assembly 15 is connected with the tub 20 for drawing water from the water supply pipe into the tub 20.
  • a damper 21 is connected with a downside of an outer circumferential surface of the tub 20, and supported in the body case 10.
  • the damper 21 dampens vibrations generated in an operation of the drum washing machine.
  • the driving part includes a motor 71 for driving the drum 30, a belt 72 connected with belt pulleys 73 and 74 for transmitting driving force of the motor 71 to the drum 30.
  • a washing, rinsing and dehydrating cycle is performed in order by a controller (not shown), once there is a user's request for washing the laundry.
  • the drum rotates with the laundry.
  • dirt is separated not only by detergent but also by friction between the laundry and the drum 30.
  • the drum 30 rotates at a high speed (approximately 800 ⁇ 1300 RPM) to dehydrate the laundry.
  • the conventional drum washing machine may cause a problem of wasting washing water and detergent, and another problem of consumption of much more power than necessary.
  • WO 2004/106614 A1 relates to a method for washing laundry in a washing machine, including the steps of supplying predetermined amounts of washing water and detergent to an outer tub and an inner tub in the outer tub for holding laundry according to an amount of the laundry, and rotating the inner tub and a pulsator in the inner tub at a predetermined speed by a motor to wash the laundry by a centrifugal force.
  • An object of the present invention devised to solve the problem lies on is to provide a control method for a drum washing machine capable of not only economizing in power and washing water but also enhancing washing efficiency.
  • a control method for a drum washing machine includes steps of sensing an amount of the laundry introduced within a drum; predetermining a water level based on the sensed amount of the laundry; supplying an amount of washing water smaller than the predetermined water level, but enough to dampen the laundry as well as to cause pumping circulation; a first washing for washing the laundry roughly by means of circulating the small amount of the washing water; re-supplying washing water to the predetermined water level; and a second washing for washing the laundry with rotating the drum in a state without pumping circulation.
  • the step of the first washing includes a step of heating washing water.
  • the step of the first washing is preformed by pumping-circulating and directly spraying washing water to the laundry.
  • the step of the first washing the step of heating washing water and the step of pumping-circulating washing water are performed alternatively.
  • the step of the first washing is performed for a predetermined period of time.
  • the step of heating washing water is performed to a predetermined temperature.
  • a control method for a drum washing machine has an advantageous effect of economizing in washing water as well as in power, because washing is performed in an order of supplying a small amount of washing water and pumping-circulating washing water.
  • control method for the drum washing machine according to the present invention has another advantageous effect that it is possible to sterilize the laundry, because washing water is heated as well as pumping-circulating washing water.
  • control method for the drum washing machine according to the present invention has another advantageous effect that it is possible to soak the laundry several times for separating dirt from the laundry more smoothly, because pumping-circulating water and heating water are performed alternatively.
  • control method for the drum washing machine according to the present invention has another advantageous effect of enhancing washing efficiency as well as separating dirt, because a step is added in which washing water is re-supplied as much as a sensed amount of the laundry with rotating a drum.
  • a body case 110 is provided for defining an exterior of a drum washing machine.
  • a tub 120 is mounted within the body case 110 for holding washing water, and is supported in the body case 110.
  • a damper 148 is provided between the tub 120 and the body case 110 for dampening vibrations generated in an operation of the drum washing machine.
  • a drum 130 is rotatably mounted within the tub 120 for having the laundry introduced therein.
  • the drum 130 is in communication with an outside and has an opened side thereof, which is disposed toward an opening 110 of the body case 110.
  • a door 140 is provided at a portion where the opening 110 of the body case 110 is formed. Also, a gasket 150 is provided at an inner circumferential surface of the opening 111 for airtightness between the door 140 and the opening 111.
  • a plurality of penetrating holes (not shown) is formed along a circumferential surface of the drum 130 for drawing washing water and steam into the drum 130.
  • a dispenser 200 is provided for supplying detergent and washing water into the tub 120, and a water supply valve 118 is connected thereto.
  • the water supply valve 118 is connected with an external water pipe (not shown) for drawing cooling water into the drum washing machine.
  • the dispenser 200 is provided within the body case 110 and capable of filling up de tergent.
  • a water supplying pipe 210 is provided in the dispenser 200 for supplying washing water into the tub 120.
  • a circulating pump 400 is provided in a lower portion of the drum washing machine for circulating washing water within the tub 120.
  • a circulating channel pipe 410 between the circulating pump 400 and the tub 120, which draws washing water discharged into the lower portion of the tub 120 and re-discharges the washing water to a second side of the circulating pump 400 to re-draw it into the tub 120.
  • the circulating pump 400 pumps so as to re-discharge drawn washing water, and the washing water discharged from the circulating pump 400 passes upwardly through a circulating channel pipe 410 to be re-discharged at an upper front of the tub 120.
  • the circulating channel pipe 410 is provided at the gasket 150 in an upper front of the tub so that washing water may be sprayed into the tub 120.
  • a spray unit 415 is provided at the gasket 150 in an upper front of the tub 120 so as to spray washing water into the tub 120.
  • a heater 500 is mounted in a downside of the tub 120 for enabling the laundry to be sterilized by boiling washing water.
  • the heater 500 is employed for soaking the laundry when re-circulating washing water to help dirt separated from the laundry, as well as for heating washing water for sterilizing the laundry.
  • a filter (not shown) is provided at the circulating pump 400 or the circulating channel pipe 410 for filtering dirt of the circulating washing water.
  • some part of the circulating channel pipe 410 may be formed as bellows 412 so that the circulating channel pipe 410 may maintain its position with the tub 120 safely in spite of vibrations generated in the operation of the drum washing machine, and the bellows 412 may be made of rubber.
  • a drain pipe (not shown) is provided in a lower portion of the drum washing machine for draining washing water after a washing or a rinsing cycle having been completed.
  • FIGS. 3 and 4 illustrating the drum washing machine according to the preferred embodiment of the present invention
  • FIG. 5 illustrating the control method for the drum washing machine according to the present invention
  • a washing water level is predetermined based on the sensed amount of the laundry (S21).
  • a controller controls the dispenser 200 to draw the smaller amount of the washing water into the tub 120. Thereby, a process of initially supplying washing water may start.
  • the smaller amount of the washing water means that some of the smaller washing water is enough to dampen the laundry and the rest of the washing water is enough to prevent cavitation in a process of pumping washing water.
  • a step of a first washing is performed, in which the smaller amount of the washing water is supplied and pumping-circulated by the circulation pump 400 to wash the laundry (S41).
  • washing water having been pumping-circulated is sprayed directly to the laundry through the spray unit 415 within the drum washing machine.
  • a step is further included in which the drum 130 rotates at the same time that the washing water is sprayed.
  • the step of the first washing includes a step of heating supplied washing water by means of the heater 500.
  • the heater 500 helps the laundry sterilized, and also helps dirt separated from the laundry.
  • the step of heating washing water and the step of pumping-circulating washing water are performed alternatively.
  • the step of the first washing is performed for a predetermined period of time, and the step of heating washing water is performed only to a predetermined temperature. Thereby, it is possible to prevent laundry damage due to an over-increase of the temperature.
  • washing water is re-supplied to the predetermined washing water level set based on the sensed amount of the laundry (S51).
  • predetermined washing water is re-supplied to the small amount of the washing water supplied before to reach the washing water level, which is predetermined based on the sensed amount of the laundry.
  • a step of a second washing is performed with rotating the drum 130 in a state of not performing the pumping circulation in the step of the first washing (S61).
  • the step of the second washing is performed.
  • the amount of the detergent and washing water may be reduced as well as electric power economizing, compared with the related art washing method in which the laundry is washed after washing water is introduced to a predetermined level at beginning.
  • a control method of the drum washing machine according to the present invention has following effects.
  • washing water is heater by a heater. That process is repeated to perform a soaking cycle several times. Thereby, an enhanced washing efficiency such as a sterilizing function may be given.
  • control method of the drum washing machine according to the present invention has another effect of economizing in washing water as well as in power, because a small amount of washing water is re-supplied in spray several times.
  • control method of the drum washing machine according to the present invention may have another effect of preventing laundry damage caused by a drastic increase of the temperature as well as preventing the temperature of the drum from getting too high in washing, because supplying washing water, rotating the drum and heating washing water are performed alternatively.
  • a drum washing machine with a drying function having an air circulating channel, a heater and a fan may include the circulating pump, the circulating channel pipe and the spray unit. Hence, once a small amount of washing water is introduced and heated, and then circulated. Thereby, a washing method same as the washing method of the present invention may be performed.
  • the present invention relates to a control method for a drum washing machine.
  • the present invention Since an entire washing according to the present invention is performed in an enhanced method to economizing in washing water as well as electric power, the present invention has an industrial applicability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP05821916.3A 2004-12-30 2005-12-22 Control method for a drum washing machine Not-in-force EP1831447B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040116166A KR101154952B1 (ko) 2004-12-30 2004-12-30 드럼세탁기 및 드럼세탁기의 제어방법
PCT/KR2005/004448 WO2006071022A1 (en) 2004-12-30 2005-12-22 Control method for the drum washing machine

Publications (3)

Publication Number Publication Date
EP1831447A1 EP1831447A1 (en) 2007-09-12
EP1831447A4 EP1831447A4 (en) 2013-10-23
EP1831447B1 true EP1831447B1 (en) 2014-10-01

Family

ID=36615111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05821916.3A Not-in-force EP1831447B1 (en) 2004-12-30 2005-12-22 Control method for a drum washing machine

Country Status (7)

Country Link
EP (1) EP1831447B1 (zh)
JP (1) JP5144276B2 (zh)
KR (1) KR101154952B1 (zh)
CN (1) CN101094950B (zh)
AU (1) AU2005320477B2 (zh)
ES (1) ES2524605T3 (zh)
WO (1) WO2006071022A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210087734A1 (en) * 2018-02-22 2021-03-25 Lg Electronics Inc. Washing apparatus and method for controlling same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101085494B1 (ko) * 2006-06-19 2011-11-23 삼성전자주식회사 세탁기 및 그 세탁제어방법
KR101073505B1 (ko) 2006-08-14 2011-10-17 삼성전자주식회사 세탁기 및 그 수위제어방법
KR101085904B1 (ko) * 2007-02-26 2011-11-23 삼성전자주식회사 세탁기 및 그 세탁제어방법
KR101144809B1 (ko) * 2009-03-20 2012-05-11 엘지전자 주식회사 세탁물 처리기기 및 세탁물 처리기기 제어방법
EP2481843B1 (en) * 2011-01-27 2013-09-11 Electrolux Home Products Corporation N.V. A method for operating a washing machine or washer-dryer and a corresponding washing machine or washer-dryer
JP2017064078A (ja) * 2015-09-30 2017-04-06 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． 洗濯機
DE102016204390A1 (de) * 2016-03-16 2017-09-21 Henkel Ag & Co. Kgaa Verfahren zum Reinigen von Wäsche in einer Waschmaschine sowie eine Waschmaschine

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JPH10211393A (ja) * 1997-01-30 1998-08-11 Matsushita Electric Ind Co Ltd ドラム式洗濯機
KR19990021190A (ko) * 1997-08-30 1999-03-25 전주범 세탁기의 수위 감지 최적화 방법
KR19990085004A (ko) * 1998-05-13 1999-12-06 윤종용 세탁기의 삶은세탁 제어방법
CN2372345Y (zh) * 1999-05-12 2000-04-05 海尔集团公司 滚筒洗衣机的喷淋装置
JP3659836B2 (ja) * 1999-05-19 2005-06-15 シャープ株式会社 ドラム式洗濯機
JP2001149685A (ja) * 1999-11-26 2001-06-05 Toshiba Corp ドラム式洗濯機
KR20030021348A (ko) * 2001-09-05 2003-03-15 주식회사 엘지이아이 드럼세탁기의 세탁 제어 방법
JP4107854B2 (ja) * 2002-03-07 2008-06-25 三洋電機株式会社 ドラム式洗濯機
JP2004073246A (ja) * 2002-08-09 2004-03-11 Sanyo Electric Co Ltd 洗濯機
KR100929228B1 (ko) * 2002-11-28 2009-12-01 엘지전자 주식회사 드럼세탁기의 급수방법
EP1475472A3 (en) * 2003-04-25 2008-10-22 Lg Electronics Inc. Wash water-circulating apparatus for washing machines and method of controlling the same
WO2004106614A1 (en) * 2003-05-28 2004-12-09 Lg Electronics Inc. Washing method for washing machine
JP4856902B2 (ja) * 2005-06-16 2012-01-18 日立アプライアンス株式会社 洗濯乾燥機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210087734A1 (en) * 2018-02-22 2021-03-25 Lg Electronics Inc. Washing apparatus and method for controlling same

Also Published As

Publication number Publication date
AU2005320477A1 (en) 2006-07-06
JP5144276B2 (ja) 2013-02-13
KR20060077348A (ko) 2006-07-05
KR101154952B1 (ko) 2012-06-18
EP1831447A1 (en) 2007-09-12
AU2005320477B2 (en) 2009-03-26
ES2524605T3 (es) 2014-12-10
EP1831447A4 (en) 2013-10-23
JP2008526296A (ja) 2008-07-24
WO2006071022A1 (en) 2006-07-06
CN101094950A (zh) 2007-12-26
CN101094950B (zh) 2010-05-12

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