EP1529872A1 - Machine à laver à tambour avec unité de détection du niveau d'eau - Google Patents

Machine à laver à tambour avec unité de détection du niveau d'eau Download PDF

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Publication number
EP1529872A1
EP1529872A1 EP04253974A EP04253974A EP1529872A1 EP 1529872 A1 EP1529872 A1 EP 1529872A1 EP 04253974 A EP04253974 A EP 04253974A EP 04253974 A EP04253974 A EP 04253974A EP 1529872 A1 EP1529872 A1 EP 1529872A1
Authority
EP
European Patent Office
Prior art keywords
water
water level
level sensing
drum
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.)
Withdrawn
Application number
EP04253974A
Other languages
German (de)
English (en)
Inventor
Jae-myong 302-912 Joogong 2nd APT. Kim
Hyoung Hoon 201-104 DongSuwon-LG Vilrigy Roh
Kyu Chai 332-401 Byuksan APT. Lee
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 EP1529872A1 publication Critical patent/EP1529872A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • 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
    • D06F39/085—Arrangements or adaptations of pumps
    • 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
    • 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 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the present invention relates, in general, to drum-type washing machines and, more particularly, but not exclusively, to a drum-type washing machine which prevents or at least attempts to prevent a water level sensing unit thereof from being damaged or broken due to vibration, in addition to preventing or at least attempting to prevent the water level sensing unit from being clogged with impurities, such as lint.
  • a drum-type washing machine includes a cabinet, a door, a water tub, a rotary tub, and a drive motor.
  • the door is mounted to a surface of the cabinet to be open and closed.
  • the water tub is located in the cabinet, and is a shape of a drum which opens toward the door.
  • the rotary tub is rotatably installed in the water tub.
  • the drive motor drives the rotary tub.
  • Laundry is located in the rotary tub to be washed, and wash water is fed into the water tub.
  • a water level sensing unit is installed at a predetermined position of the water tub to detect a level of water fed into the water tub, thus allowing an appropriate amount of wash water to be fed into the water tub.
  • a conventional water level sensing unit of a drum-type washing machine is disclosed in Korean Patent Laid-Open Publication No. 1999-0051584.
  • the water level sensing unit includes a water level sensing hose.
  • the water level sensing hose is coupled to a predetermined portion of the water tub.
  • the water tub suffers violent vibration due to an operation of the drive motor.
  • the water level sensing hose coupled to the water tub may be damaged or broken, due to the vibration of the water tub.
  • An aim of embodiments of the present invention is to provide a drum-type washing machine having a water level sensing unit, which prevents a water level sensing hose from being damaged or broken due to vibration, and from being clogged with impurities, in addition to being capable of precisely detecting a water level.
  • a drum-type washing machine comprising a water tub to contain water therein, a water level sensing unit to detect a level of the water contained in the water tub, and a drain pump to drain the water from the water tub, wherein the water level sensing unit is coupled to a predetermined portion of the drain pump.
  • the water level sensing unit comprises a water level sensing hose coupled to the predetermined portion of the drain pump to communicate with the water tub, and a water level sensor to detect a pressure in the water level sensing hose, and the level of the water contained in the water tub.
  • the water level sensing hose is coupled to a suction pipe of the drain pump.
  • the water level sensor is installed on an upper end of the water level sensing hose, and the water level sensing hose comprises a large-diameter part provided on a lower portion of the water level sensing hose, and a small-diameter part provided between the large-diameter part of the water level sensing hose and the water level sensor.
  • the large-diameter part comprises a length of approximately 10cm or more.
  • a drum-type washing machine comprising: a cabinet; a water tub located in the cabinet to contain water therein; a holding unit mounted to a predetermined portion of the cabinet, and communicating with the water tub; and a water level sensing unit to detect a level of the water contained in the water tub and comprising: a water level sensing hose coupled to a predetermined portion of the holding unit to communicate with the water tub; and a water level sensor to detect a pressure in the water level sensing hose and the level of the water contained in the water tub.
  • the holding unit comprises a drain pump to drain the water from the water tub.
  • the water level sensing hose is coupled to a suction pipe of the drain pump.
  • a drum-type washing machine 100 comprises a cabinet 10, a door 11, a water tub 20, a rotary tub 21, and a drive motor 22.
  • the door 11 is mounted to a surface of the cabinet 10 to be open and closed.
  • the water tub 20 is located in the cabinet 10, and comprises a drum shape, which is open toward the door 11.
  • the rotary tub 21 is rotatably installed in the water tub 20.
  • the drive motor 22 drives the rotary tub 21.
  • the rotary tub comprises a lifter 25 mounted to an inner surface of a sidewall of the rotary tub 21 to move laundry located on a bottom of the rotary tub 21 upward, when the rotary tub 21 rotates.
  • the rotary tub further comprises a plurality of perforations 26 on the sidewall of the rotary tub 21 to feed wash water from the water tub 20 into the rotary tub 21.
  • the water tub 20 and the rotary tub 21 are concentrically located in the cabinet 10 along a same central axis.
  • the drive motor 22 is provided on the central axis.
  • the drum-type washing machine further comprises a water supply pipe 30 interiorly provided on an upper portion of the cabinet 10 to supply water to the water tub 20 and a detergent container 33 provided at a predetermined position above the door 11 coupled to the water supply pipe 30.
  • the water tub further comprises a water supply hole 23 on a top wall of the water tub 20.wherein an end of the water supply pipe 30 is coupled to the water supply hole 23.
  • the water tub further comprises a water drain hole 24 formed on a bottom of the water tub 20 to drain the water from the water tub 20 through the water drain hole 24.
  • a drain pump 40 is mounted to a bottom of the cabinet 10 to drain the water from the water tub 20.
  • a suction pipe 41 is provided on a predetermined portion of the drain pump 40 to draw the water from the water tub 20 to the drain pump 40, and a discharging pipe 42 is provided on a predetermined portion of the drain pump 40 to discharge the water from the drain pump 40.
  • a first drain pipe 31 connects the water drain hole 24 of the water tub 20 to the suction pipe 41.
  • a second drain pipe 32 is connected, at a first end thereof, to the discharging pipe 42, while extending, at a second end thereof, to an outside of the cabinet 10.
  • the drum-type washing machine 100 further comprises a water level sensing unit 50 to detect a level of the water contained in the water tub 20.
  • the water level sensing unit 50 comprises a water level sensing hose 51 and a water level sensor 54.
  • the water level sensing hose 51 is coupled, at a lower end thereof, to the suction pipe 41 of the drain pump 40.
  • the water level sensor 54 is installed on an upper end of the water level sensing hose 51 to detect air pressure in the water level sensing hose 51.
  • the water level sensing hose 51 comprises a small-diameter part 52 and a large-diameter part 53. On an upper end of the small-diameter part 52 is installed the water level sensor 54.
  • the large-diameter part 53 connects to a lower end of the small-diameter part 52.
  • laundry to be washed is located in the rotary tub 21 which is rotated by the drive motor 22.
  • the rotary tub 21 rotates, the laundry located on the bottom of the rotary tub 21 is upwardly moved by the lifter 25 which is mounted to the inner surface of the sidewall of the rotary tub 21, and then drops to the bottom of the rotary tub 21 due to gravity. While the laundry is moved upwardly and drops to the bottom of the rotary tub 21, an impact force and friction between articles of laundry are generated, thus washing the laundry.
  • Wash water is supplied through the water supply pipe 30 to the water tub 20. Since the water supply pipe 30 is coupled to the detergent container 33, a detergent is fed into the water tub 20 together with the water while being dissolved in the water. In order to supply an appropriate amount of water to the water tub 20, the water level sensing unit 50 detects the level of the water contained in the rotary tub 21.
  • the lower end of the water level sensing hose 51 is coupled to the suction pipe 41 of the drain pump 40 which is mounted to the cabinet 10, differently from a conventional water level sensing hose of which a lower end is coupled to a water tub.
  • the water level sensing hose 51 is not affected by the vibration generated during an operation of the drive motor 22.
  • the water level sensing hose 51 comprises the large-diameter part 53 at the lower portion thereof
  • the water level sensing hose 51 of embodiments of the present invention comprises a larger variance of pressure than the conventional water level sensing hose having a constant diameter, in response to a same variance of a water level, to allow the water level sensor 54 to precisely detect the water level.
  • the large-diameter part 53 Since the pressure of the compressed air acts on a water surface of the large-diameter part 53, the water surface of the large-diameter part 53 is lower than a water surface of the water tub 20 on which the atmospheric pressure acts. Since the large-diameter part 53 comprises a predetermined length sufficient to prevent the water of the large-diameter part 53 from reaching the small-diameter part 52 as the water level of the water tub 20 reaches a maximum level, impurities, such as lint, do not clog the small-diameter part 52, thus preventing malfunction of the water level sensing unit 50.
  • the large-diameter part 53 comprises a length of approximately 10cm or more.
  • a water level sensing hose of the water level sensing unit is coupled to a predetermined portion of a drain pump mounted to a cabinet, to prevent the water level sensing hose from being damaged or broken due to vibration.
  • the water level sensing hose comprises a large-diameter part at a lower portion thereof, to allow a water level to be precisely detected, and to prevent the water level sensing hose from being clogged with impurities and thereby preventing malfunction of the water level sensing unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP04253974A 2003-11-10 2004-07-01 Machine à laver à tambour avec unité de détection du niveau d'eau Withdrawn EP1529872A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030079253A KR20050045260A (ko) 2003-11-10 2003-11-10 수위감지장치가 구비된 드럼세탁기
KR2003079253 2003-11-10

Publications (1)

Publication Number Publication Date
EP1529872A1 true EP1529872A1 (fr) 2005-05-11

Family

ID=34431748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04253974A Withdrawn EP1529872A1 (fr) 2003-11-10 2004-07-01 Machine à laver à tambour avec unité de détection du niveau d'eau

Country Status (5)

Country Link
US (1) US20050097924A1 (fr)
EP (1) EP1529872A1 (fr)
JP (1) JP2005137886A (fr)
KR (1) KR20050045260A (fr)
CN (1) CN1616746A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052980A1 (fr) * 2006-10-31 2008-05-08 Arcelik Anonim Sirketi Machine à laver
WO2008052979A1 (fr) * 2006-10-31 2008-05-08 Arcelik Anonim Sirketi Machine à laver
WO2008119812A1 (fr) * 2007-04-02 2008-10-09 Arcelik Anonim Sirketi Machine à laver
EP1978143A3 (fr) * 2007-04-05 2010-02-24 Indesit Company S.p.A. Appareil de lavage

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101073505B1 (ko) 2006-08-14 2011-10-17 삼성전자주식회사 세탁기 및 그 수위제어방법
CN101487730B (zh) * 2008-01-16 2012-04-04 海尔集团公司 一种洗衣机水位检测方法及其装置
EP2305872B1 (fr) * 2008-05-06 2019-01-23 Daewoo Electronics Corporation Procédé de commande de l'évacuation de l'eau résiduaire pour une machine à laver
CN101824733B (zh) * 2009-03-02 2013-06-05 海尔集团公司 一种防止泡沫和积水的洗衣机导压管导流装置
JP6074690B2 (ja) * 2011-02-23 2017-02-08 パナソニックＩｐマネジメント株式会社 ドラム式洗濯機
EP2767631B1 (fr) * 2013-02-15 2017-05-17 Electrolux Appliances Aktiebolag Machine à laver avec dispositif de détection de niveau amélioré
CN103448655A (zh) * 2013-08-15 2013-12-18 安徽凯迪电气有限公司 一种汽车天窗涉水自动开启系统及其控制方法
KR20150072801A (ko) * 2013-12-20 2015-06-30 동부대우전자 주식회사 벽걸이형 드럼 세탁기의 수평 측정장치 및 수평 측정방법
KR101568210B1 (ko) 2013-12-26 2015-11-12 동부대우전자 주식회사 드럼 세탁기
KR102466662B1 (ko) * 2016-06-14 2022-11-14 엘지전자 주식회사 세탁기 및 세탁기의 제어방법
CN108532212A (zh) * 2018-05-09 2018-09-14 海信（山东）冰箱有限公司 一种多桶洗衣机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030491A1 (de) * 1980-08-12 1982-02-25 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum bemessen der automatisch zulaufenden wassermenge und trommelwaschmaschine zur durchfuehrung des verfahrens
EP0885993A1 (fr) * 1997-06-18 1998-12-23 Electrolux Zanussi S.p.A. Machine à laver avec dispositif d'equilibrage
DE10061237A1 (de) * 2000-12-08 2002-06-27 Bsh Bosch Siemens Hausgeraete Waschmaschine

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US3656866A (en) * 1970-05-11 1972-04-18 Wilbur H Hine Jr Drain pump control
JP2517464B2 (ja) * 1990-09-29 1996-07-24 三洋電機株式会社 ドラム式洗濯機
DE4141213C2 (de) * 1991-12-13 1996-12-12 Bosch Siemens Hausgeraete Verfahren zum Bestimmen der Wäsche-Trockenmasse, des Wasserstands und der gebundenen Flotte in einer Trommelwaschmaschine sowie Waschmaschine zur Durchführung des Verfahrens
JP3138354B2 (ja) * 1993-03-05 2001-02-26 シャープ株式会社 ドラム式洗濯乾燥機
KR200153791Y1 (ko) * 1995-02-17 1999-08-02 윤종용 드럼형 세탁기의 수위 제어장치
IT1289375B1 (it) * 1996-05-14 1998-10-02 Electrolux Zanussi Elettrodome Macchina lavabiancheria con filtro controllato
TW415981B (en) * 1998-07-16 2000-12-21 Samsung Electronics Co Ltd Washing machine having a hybrid sensor and a control method thereof
KR20000005762U (ko) * 1998-09-02 2000-04-06 윤홍구 전자동 세탁기의 강제 배수구조
JP2000296289A (ja) * 1999-04-15 2000-10-24 Hitachi Ltd 洗濯機
JP2001087592A (ja) * 1999-09-20 2001-04-03 Hitachi Ltd ドラム式洗濯機
US6481246B1 (en) * 2000-07-19 2002-11-19 Maytag Corporation Drain pump mounted pressure switch for a washing machine
KR100766034B1 (ko) * 2001-03-29 2007-10-11 주식회사 엘지이아이 건조기능을 구비한 가전기기 및 그 제어방법
KR100479090B1 (ko) * 2002-11-28 2005-03-28 엘지전자 주식회사 세탁기의 수위 감지장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030491A1 (de) * 1980-08-12 1982-02-25 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum bemessen der automatisch zulaufenden wassermenge und trommelwaschmaschine zur durchfuehrung des verfahrens
EP0885993A1 (fr) * 1997-06-18 1998-12-23 Electrolux Zanussi S.p.A. Machine à laver avec dispositif d'equilibrage
DE10061237A1 (de) * 2000-12-08 2002-06-27 Bsh Bosch Siemens Hausgeraete Waschmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052980A1 (fr) * 2006-10-31 2008-05-08 Arcelik Anonim Sirketi Machine à laver
WO2008052979A1 (fr) * 2006-10-31 2008-05-08 Arcelik Anonim Sirketi Machine à laver
WO2008119812A1 (fr) * 2007-04-02 2008-10-09 Arcelik Anonim Sirketi Machine à laver
EP1978143A3 (fr) * 2007-04-05 2010-02-24 Indesit Company S.p.A. Appareil de lavage

Also Published As

Publication number Publication date
KR20050045260A (ko) 2005-05-17
CN1616746A (zh) 2005-05-18
JP2005137886A (ja) 2005-06-02
US20050097924A1 (en) 2005-05-12

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