EP1502986A1 - Waschmaschine - Google Patents

Waschmaschine Download PDF

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Publication number
EP1502986A1
EP1502986A1 EP04252396A EP04252396A EP1502986A1 EP 1502986 A1 EP1502986 A1 EP 1502986A1 EP 04252396 A EP04252396 A EP 04252396A EP 04252396 A EP04252396 A EP 04252396A EP 1502986 A1 EP1502986 A1 EP 1502986A1
Authority
EP
European Patent Office
Prior art keywords
water
tub
pump
washing machine
water level
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Withdrawn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
EP04252396A
Other languages
English (en)
French (fr)
Inventor
Hyun Sook Kim
Ki Hun Joo
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1502986A1 publication Critical patent/EP1502986A1/de
Withdrawn legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/18Condition of the laundry, e.g. nature or weight
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2101/00User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/02Characteristics of laundry or load
    • D06F2101/06Type or material
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/04Quantity, e.g. weight or variation of weight
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/06Type or material
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/14Supply, recirculation or draining of washing liquid
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18Washing liquid level
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02Water supply
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/06Recirculation of washing liquids, e.g. by pumps or diverting valves
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps

Definitions

  • the present invention relates to a drum washing machine comprising a fixed water tub, a rotary tub rotatably mounted within the fixed tub to receive laundry to be washed and a water pump and, a method of controlling the drum washing machine.
  • a set amount of water is fed into a water tub, and then a rotary tub within the water tub is rotated alternately in opposite directions to uniformly soak the laundry with the water.
  • a rotary tub within the water tub is rotated alternately in opposite directions to uniformly soak the laundry with the water.
  • the water level within the water tub/rotary tub lowers relative to the water level when the water was initially fed in. Therefore, supplementary water is fed into the water tub to restore the lowered water level up to the initial water level.
  • a conventional drum washing machine determines the size of the laundry load according to the number of water supplement operations. That is, if there are a large number of water supplement operations, it is deduced that the laundry load is large, whereas if there are a small number of water supplement operations, it implies that the laundry load is small.
  • the size of the laundry load is used as basic data for subsequent washing, rinsing and drying processes.
  • the length of time required for laundry to sufficiently absorb water differs according to the material(s) making up the laundry.
  • the extent to which the laundry absorbs water, and the time taken to do so also depends on how the laundry is arranged. For example, if clothes of the laundry are tightly knotted and entangled, the extent to which they absorb water and the time taken to do so will be different than if the laundry is loose and separate.
  • the washing machine of the present invention is characterised in that the water pump is operable to pump water fed into the fixed water tub from the fixed water tub and into the rotary tub.
  • a preferred embodiment comprises a circulation pipe having one end connected to the fixed water tub and the other end to an inlet to the rotary tub, the pump being operable to pump water through the pipe from the fixed water tub into the rotary tub.
  • a control unit and a water level sensor are preferably provided to determine the level of water in the rotary tub after the pump has stopped.
  • the control unit is operable to cause further water to be supplied to the fixed water tub if the water level sensor detects that the water level is below a predetermined level and to restart the pump when the predetermined water level has been reached.
  • the water level sensor is operable to detect the water level in the rotary tub each time the pump is stopped, the control unit being operable to cause further water to be supplied to the fixed water tub if the water level sensor detects that the water level is below a predetermined level each time.
  • the water level sensor is operable to continue detecting the water level in the rotary tub each time the pump is stopped until a predetermined time limit is exceeded or the predetermined water level is maintained following operation of the pump.
  • control unit is operable to calculate the number of times that further water is supplied to the fixed water tub each time that the pump is stopped and, to determine the amount of laundry in the rotary drum in dependence on the calculated number of times that further water is supplied to the fixed water tub.
  • the drum washing machine may include a motor to rotate the rotary tub, wherein control unit may control the motor to rotate the rotary tub in opposite directions while controlling an operation of the pumping unit.
  • the drum washing machine control unit may determine the water level from the water level sensor when the pump and the motor are simultaneously stopped.
  • the drum washing machine may include a user input comprising a key input unit to receive washing courses according to materials of the laundry load, wherein the control unit operates the pump according to ON-OFF periods corresponding to the washing courses.
  • the key input unit may be provided with washing course buttons for one or more of cotton fabrics, mixed fabrics, woollen fabrics and synthetic fibres.
  • the ON-OFF periods of the pump may be set according to a chosen one of the washing course buttons. Durations of OFF periods of the ON-OFF periods may increase from the cotton fabrics, to the mixed fabrics, to the woollen fabrics, to the synthetic fibres.
  • the method of controlling a drum washing machine of the present invention is characterised by the steps of feeding a set amount of water into the fixed water tub, operating the pump unit to circulate the water between the fixed tub and the rotary tub, and determining the size of the laundry load.
  • a preferred method also comprises the step of rotating the rotary tub whilst the pump unit circulates the water.
  • the operation of the pump unit is variable dependent upon user input criteria.
  • the method also includes the steps of performing a number of additional water feeding operations within a preset time period to maintain the water level at a predetermined level, calculating the number of additional water feeding operations, and determining the size of the laundry load based on the number of additional water feeding operations.
  • the drum washing machine control method may include operating a motor to rotate the rotary tub alternately in opposite directions while controlling an operation of the pumping unit.
  • the drum washing machine control method may include determining the water level of the rotary tub using a water level sensor, when the pumping unit and the motor are simultaneously stopped.
  • the pumping unit operations may be preset according to materials of the laundry load.
  • the time duration of pumping operations of the pumping unit may increase from a cotton fabrics washing course, to a mixed fabrics washing course, to a woollen fabrics washing course, to a synthetic fibre washing course.
  • the drum washing machine of the present invention includes a water tub 10 and a rotary tub 11 rotatably provided in the water tub 10.
  • a water feed pipe 12 is connected to the water tub 10 to supply water from an external water supply pipe into the water tub 10.
  • a water feed valve 13 is mounted in the water feed pipe 12 to control the flow of water.
  • a detergent container 14 is disposed in the water feed pipe 12.
  • a drain pipe 15 is disposed between the bottom of the water tub 10 and a drain outlet to enable water to be drained from the water tub 10.
  • a drain pump 16 and a drain valve 17 are mounted in the drain pipe 15 to pump the water out of the water tub 10.
  • a circulating pipe 18 is branched from the drain pipe 15 between the drain pump 16 and the drain valve 17.
  • One end of the circulating pipe 18 is connected to the water tub 10 and a remaining end thereof is provided at an inlet of the rotary tub 11 so as to circulate the water from the water tub 10 to the rotary tub 11.
  • a spray nozzle 18a is disposed at said remaining end of the circulating pipe 18 to spray the circulated water into the rotary tub 11.
  • a circulating valve 19 is mounted in the circulating pipe 18 to prevent water from flowing up into the circulating pipe 18 when the system is draining the water to the drain outlet.
  • the circulating pipe 18, the drain pump 16, the spray nozzle 18a and the circulating valve 19 form a pumping unit.
  • a reversible motor 20 is coupled to the rotary tub 11 and is operable to rotate said rotary tub 11.
  • a water level sensor (not shown) is mounted in the rotary tub 11 to detect the water level within the rotary tub 11.
  • the water feed valve 13, the motor 20, the drain pump 16, the drain valve 17, the circulating valve 19, and the water level sensor are all electrically connected to a control unit (not shown) that performs the entire control operation of the drum washing machine.
  • the control unit includes a user input side which is connected to washing course buttons (not shown) to receive information from a user regarding materials of the laundry, such as whether it comprises cotton fabrics, woollen fabrics, or synthetic fibres. As will be described later, the control unit controls the number of pumping operations of the drain pipe 16, varied by setting different ON-OFF periods of the drain pump 16, in response to signals received from the buttons.
  • the water feed valve 13 is turned on for a certain period, so that water is fed into the water tub 10 until the level of the water reaches a preset water level. Accordingly, water flows from the water feed pipe 12 through the detergent container 14, and fills a lower portion of the water tub 10.
  • the water level sensor sends a signal to the control unit which then controls the reversible motor 20 to rotate in forward and reverse directions so as to rotate the rotary tub 11 in opposite directions, and thereby cause the laundry to be sufficiently and uniformly soaked with water.
  • the control unit controls the drain pump 16 to circulate water from the lower portion of the water tub 10 to be sprayed onto the laundry in the rotary tub 11.
  • a water current level reading is taken from the water level sensor within rotary tub 11 to determine whether supplementary feeding of water is required.
  • the water level is read during an interval when both the motor and the pump are simultaneously turned off so that the water level can be detected more accurately.
  • operation 130 it is determined whether the feeding of supplementary water is required, depending on the read water level. If the read water level of the rotary tub 11 is lower than the preset water level, it is determined that the feeding of supplementary water is required. On the contrary, if the read water level of the rotary tub 11 is not lower than the preset water level, it is determined that the feeding of supplementary water is not required. If the feeding of supplementary water is required, the water feed valve 13 is turned on in operation 140.
  • control unit repeatedly performs a series of operations for a preset period in which laundry is allowed to be soaked with water and the supplementary water is fed into the rotation tub 10 depending on the variations of the water level in the rotary tub 11.
  • control unit determines whether the preset period has elapsed in operation 150. If the preset period has not elapsed, the control unit performs operation 110 and repeats the operations of allowing the laundry to be soaked with water and feeding the supplementary water depending on the variations of the water level. However, if the preset period has elapsed, the number of water supplement operations performed during the preset period is then determined in operation 160.
  • the size of the laundry load is determined based on the number of water supplement operations determined from operation 160. That is, if the number of water supplement operations is large, the size of the laundry load is large, whereas if the number of water supplement operations is small, the size of the laundry load is small.
  • Figures 3A and 3B are timing diagrams showing a procedure for reading the water level from the water level sensor in the rotary tub, as in operation 120 in Figure 2.
  • the motor 20 and the drain pump 16 have different ON-OFF periods. However, the motor 20 and the drain pump 16 are set to have intervals T 1 during which they are both simultaneously turned off.
  • the control unit reads the water level from the water level sensor during these intervals T 1 so as to detect the water level most precisely.
  • the ON-OFF period of the pump is set according to the washing courses classified by the materials of the laundry, such as cotton fabrics, mixed fabrics and woollen fabrics and synthetic fibres.
  • the OFF period of the pump is set to be shorter than those for other fabrics, so that the number of pumping operations within the preset time period of the pump is increased thereby enabling laundry to be sufficiently soaked with water within a short time.
  • the OFF period of the pump is set to be longer than that for the cotton fabrics thereby reducing the number of pumping operations of the pump compared to the cotton fabrics course.
  • woollen fabrics have a small size load compared to the cotton fabrics and the mixed fabrics, but have very high absorptivity according to material and texture properties of the woollen fabrics.
  • the synthetic fibres have a small size load, small volume, small thickness, and low absorptivity compared to the cotton fabrics and mixed fabrics, so that the amount of water required for washing is small. Therefore, in the case of the woollen fabrics and the synthetic fibres, the OFF period of the pump is set to be relatively longer than those for the cotton fabrics and the mixed fabrics, thus reducing the number of pumping operations of the pump compared to the cotton fabrics and mixed fabrics courses.
  • the present invention provides a drum washing machine and a method of controlling the drum washing machine, which circulates water contained in a water tub into a rotary tub to be sprayed onto laundry simultaneously with the rotation of the rotary tub in opposite directions, so that the laundry is sufficiently and uniformly soaked with water within a short space of time, and then the laundry load size is precisely and quickly determined, improving reliability of the determination.
  • the present invention is advantageous in that it controls the number of water circulation and spray operations performed by a pump according to the materials of the laundry, thus precisely determining the amount of load of laundry within a short space of time.
EP04252396A 2003-07-31 2004-04-23 Waschmaschine Withdrawn EP1502986A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030053153A KR20050014500A (ko) 2003-07-31 2003-07-31 드럼 세탁기 및 그 제어방법
KR2003053153 2003-07-31

Publications (1)

Publication Number Publication Date
EP1502986A1 true EP1502986A1 (de) 2005-02-02

Family

ID=33536466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04252396A Withdrawn EP1502986A1 (de) 2003-07-31 2004-04-23 Waschmaschine

Country Status (4)

Country Link
US (1) US20050022564A1 (de)
EP (1) EP1502986A1 (de)
KR (1) KR20050014500A (de)
CN (1) CN1580355A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2034078A1 (de) * 2007-09-05 2009-03-11 Whirpool Corporation Verfahren zur raschen Kalkulation der in eine Waschmaschine mit Wasserrezirkulationssystem zu ladenden Wassermenge und zur Ausführung dieses Verfahrens geeignete Waschmaschine
EP2161365A3 (de) * 2008-09-09 2014-01-22 Miele & Cie. KG Verfahren zum Betreiben einer Waschmaschine und Waschmaschine
EP2792782A1 (de) * 2013-04-19 2014-10-22 Miele & Cie. KG Verfahren zum Betreiben einer Waschmaschine mit Umfluteinrichtung und Waschmaschine
EP2871274A1 (de) * 2013-11-06 2015-05-13 Samsung Electronics Co., Ltd Waschmaschine und Steuerungsverfahren dafür
EP2930262A1 (de) * 2014-04-08 2015-10-14 Miele & Cie. KG Wasserzulaufsteuerung und waschvollautomat
WO2020251508A1 (en) * 2019-06-14 2020-12-17 Arcelik Anonim Sirketi A washing machine comprising a filtering member

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US7706671B2 (en) 2005-03-16 2010-04-27 B2M Asset Management, Llc Multi-function liquid container
US8365438B2 (en) * 2006-06-12 2013-02-05 Lg Electronics Inc. Laundry dryer and method for controlling the same
US20080282479A1 (en) * 2007-05-18 2008-11-20 Adam John Darby Laundry machine, control and method
US8245342B2 (en) * 2008-07-30 2012-08-21 Whirlpool Corporation Method for determining load size in a washing machine
US8381341B2 (en) * 2008-09-12 2013-02-26 Whirlpool Corporation Method and apparatus for determining load size in a washing machine
US9045851B2 (en) 2010-12-07 2015-06-02 Whirlpool Corporation Method of operating a laundry treating appliance capable of saving liquid for reuse
US20160010268A1 (en) * 2014-07-14 2016-01-14 General Electric Company Washing machine appliance and a method for operating the same
CN104088113B (zh) * 2014-07-15 2018-02-16 无锡飞翎电子有限公司 一种滚筒洗衣机负载大小识别方法
US10030330B2 (en) * 2015-04-27 2018-07-24 Haier Us Appliance Solutions, Inc. Washing machine appliance
KR102549142B1 (ko) 2016-01-26 2023-06-30 삼성전자주식회사 세탁기
KR102466662B1 (ko) * 2016-06-14 2022-11-14 엘지전자 주식회사 세탁기 및 세탁기의 제어방법
US10570543B2 (en) * 2016-10-06 2020-02-25 Emz-Hanauer Gmbh & Co. Kgaa Washing machine and method of controlling the washing machine
EP3505666B1 (de) * 2017-12-28 2021-08-11 LG Electronics Inc. Verfahren zur steuerung einer waschmaschine
EP4093257A1 (de) * 2020-01-24 2022-11-30 Electrolux Appliances Aktiebolag Waschmaschine, verfahren zum detektieren eines betriebsfehlers und steueranordnung
CN112411127A (zh) * 2020-10-22 2021-02-26 珠海格力电器股份有限公司 一种桶内负载的分析的方法及装置
CN112458696A (zh) * 2020-11-28 2021-03-09 珠海格力电器股份有限公司 一种洗涤控制方法、控制装置、可读存储介质、洗衣机

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EP0464776A1 (de) * 1990-07-03 1992-01-08 Zanussi Elettrodomestici S.p.A. Apparat zum Messen der Wassermenge in einer Waschmaschine
JPH08215483A (ja) * 1995-02-08 1996-08-27 Sharp Corp 全自動洗濯機
EP0787848A1 (de) * 1996-02-05 1997-08-06 Merloni Elettrodomestici S.p.A. Verfahren zum Bestimmen der Wäschemenge und/oder der Wäscheart in einer Waschmaschine

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US5191669A (en) * 1992-01-02 1993-03-09 Whirlpool Corporation Spin method of washing fabric in a horizontal axis washer
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Publication number Priority date Publication date Assignee Title
EP0464776A1 (de) * 1990-07-03 1992-01-08 Zanussi Elettrodomestici S.p.A. Apparat zum Messen der Wassermenge in einer Waschmaschine
JPH08215483A (ja) * 1995-02-08 1996-08-27 Sharp Corp 全自動洗濯機
EP0787848A1 (de) * 1996-02-05 1997-08-06 Merloni Elettrodomestici S.p.A. Verfahren zum Bestimmen der Wäschemenge und/oder der Wäscheart in einer Waschmaschine

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2034078A1 (de) * 2007-09-05 2009-03-11 Whirpool Corporation Verfahren zur raschen Kalkulation der in eine Waschmaschine mit Wasserrezirkulationssystem zu ladenden Wassermenge und zur Ausführung dieses Verfahrens geeignete Waschmaschine
EP2161365A3 (de) * 2008-09-09 2014-01-22 Miele & Cie. KG Verfahren zum Betreiben einer Waschmaschine und Waschmaschine
EP2792782A1 (de) * 2013-04-19 2014-10-22 Miele & Cie. KG Verfahren zum Betreiben einer Waschmaschine mit Umfluteinrichtung und Waschmaschine
DE102013103965A1 (de) * 2013-04-19 2014-10-23 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine mit Umfluteinrichtung und Waschmaschine
EP2871274A1 (de) * 2013-11-06 2015-05-13 Samsung Electronics Co., Ltd Waschmaschine und Steuerungsverfahren dafür
EP2930262A1 (de) * 2014-04-08 2015-10-14 Miele & Cie. KG Wasserzulaufsteuerung und waschvollautomat
WO2020251508A1 (en) * 2019-06-14 2020-12-17 Arcelik Anonim Sirketi A washing machine comprising a filtering member

Also Published As

Publication number Publication date
CN1580355A (zh) 2005-02-16
US20050022564A1 (en) 2005-02-03
KR20050014500A (ko) 2005-02-07

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