US20040154349A1 - Washing machine control method - Google Patents

Washing machine control method Download PDF

Info

Publication number
US20040154349A1
US20040154349A1 US10/720,746 US72074603A US2004154349A1 US 20040154349 A1 US20040154349 A1 US 20040154349A1 US 72074603 A US72074603 A US 72074603A US 2004154349 A1 US2004154349 A1 US 2004154349A1
Authority
US
United States
Prior art keywords
water
temperature
dewatering
washing machine
speed
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
US10/720,746
Other languages
English (en)
Inventor
Jae Ryo
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
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RYO, JAE CHUL
Publication of US20040154349A1 publication Critical patent/US20040154349A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/007—Methods for washing, rinsing or spin-drying for spin-drying 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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
    • D06F2105/52—Changing 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 washing machine control method, and more particularly, to a washing machine control method, in which dewatering speed is controlled based on water temperature to prevent a degradation of elements of the washing machine.
  • a washing machine is operated by driving a wash motor to rotate inner and outer tubs filled with water and laundry.
  • the rotating speed is very high so that the water is separated from the laundry using a centrifugal force created by the high-speed rotation.
  • a general washing machine is comprised of an outer tub 102 for holding water and an inner tub 103 for holding laundry.
  • the inner tub 103 has a multitude of washing holes 104 and is rotatably installed in the outer tub 102 .
  • a wash motor 107 is coupled to the inner tub 103 via a drive shaft 106 rotating the inner tub.
  • a control apparatus for a general washing machine includes a key input unit 201 for inputting user commands including a wash course selection, a temperature sensor 203 for sensing a temperature of washing water, a microcomputer 205 for outputting a control signal for performing washing, rinsing, and dewatering steps according to the selected washing course, and a wash motor 207 having a variable driving speed according to the control signal output from the microcomputer.
  • FIG. 3 illustrates a washing machine control method according to a related art, including the washing, rinsing, and dewatering steps of a general washing machine as described above.
  • washing water is supplied in a step S 301 to the tub to perform a washing step S 302 .
  • the washing water is drained from the tub in a step S 303 , so that rinsing water may be supplied in a step S 304 to perform a rinsing step S 305 , which is followed by another draining step S 306 .
  • a step S 307 determines whether rinsing has been completed.
  • dewatering is performed in a step S 308 to separate the rinsing water from the laundry.
  • Dewatering is carried out by controlling the wash motor 107 to rotate the inner tub 103 at speeds as high as 1,000 rpm via the drive shaft 106 . In doing so, a centrifugal force is generated to bring the laundry into tight contact with the outer wall of the inner tub 103 , with the water passing through the washing holes 104 to be discharged from the washing machine.
  • the inner and outer tubs 103 and 102 absorb and retain the heat of the water.
  • the inner and outer tubs 103 and 102 tend to lose their physical properties, i.e., deform, so as to be brought into contact with each other, which is especially problematic when the washing machine employs plastic-based elements. As a result, the operational endurance of such a washing machine is degraded.
  • the present invention is directed to a washing machine control method that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
  • An object of the present invention which has been devised to solve the foregoing problem, lies in providing a washing machine control method, in which water temperature is sensed prior to a final draining step to control a dewatering speed, to preclude high-speed rotation of a heated tub and thereby improve the endurance of the washing machine.
  • a washing machine control method comprising steps of supplying water to a tub for performing a final operational step; draining the water from the tub; sensing the temperature of the drained water; and controlling a dewatering speed according to the sensed water temperature.
  • FIG. 1 is a cross-sectional view of a general washing machine
  • FIG. 2 is a block diagram of a control apparatus of a general washing machine
  • FIG. 3 is a flowchart of washing, rinsing, and dewatering steps of a washing machine control method according to a related art.
  • FIG. 4 is a flowchart of a washing machine control method according to the present invention.
  • washing water is supplied in a step S 401 to the tub to perform a washing step S 402 .
  • the washing water is drained from the tub in a step S 403 , so that rinsing water may be supplied in a step S 404 to perform a rinsing step S 405 , which is followed by another draining step S 407 . Since multiple rinse cycles may be performed, a step S 406 determines whether the final rinse cycle has been reached.
  • the water temperature Prior to draining the tub on the final cycle, i.e., with water still in the tub and transferring heat to the inner tub 103 , the water temperature is sensed in a step S 408 . In practice, however, the water temperature can still be sensed as the final draining step proceeds, as long as an amount of water remains in the outer tub 102 . Thus, the temperature of the water used in the final rinsing step is sensed.
  • the rinsing steps may be omitted, so that the final operational step before dewatering is the washing step and the sensed water temperature is that used for washing.
  • the reduced dewatering speed is preferably limited to approximately 700 rpm. Accordingly, the rotational speed of the inner tub is limited to 700 rpm if the temperature of the rinsing water exceeds the predetermined temperature, to preserve the physical properties of elements of the washing machine, especially, the inner and outer tubs 103 and 102 .
  • a plurality of limiting dewatering speeds may be set according to corresponding referential water temperatures.
  • the washing machine control method employs a temperature sensor and a variable-speed motor.
  • the water temperature of the final draining is sensed and compared to a predetermined temperature. Dewatering is performed at a reduce speed if the sensed temperature exceeds the predetermined temperature but is otherwise performed at the normal speed, thereby preventing the degradation of a washing machine using hot water for rinsing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
US10/720,746 2002-11-26 2003-11-25 Washing machine control method Abandoned US20040154349A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020020074069A KR20040046228A (ko) 2002-11-26 2002-11-26 세탁기 및 그 제어방법
KRP2002-0074069 2002-11-26

Publications (1)

Publication Number Publication Date
US20040154349A1 true US20040154349A1 (en) 2004-08-12

Family

ID=32822516

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/720,746 Abandoned US20040154349A1 (en) 2002-11-26 2003-11-25 Washing machine control method

Country Status (2)

Country Link
US (1) US20040154349A1 (ko)
KR (1) KR20040046228A (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090277505A1 (en) * 2008-05-06 2009-11-12 Daewoo Electronics Corporation Method of controlling drainage of wash water remaining in washing machine
CN105908445A (zh) * 2016-04-22 2016-08-31 广东格兰仕集团有限公司 滚筒洗衣机的偏心大小识别方法
CN113981651A (zh) * 2020-07-27 2022-01-28 青岛海尔洗衣机有限公司 一种洗衣机的控制方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078700A (en) * 1959-01-19 1963-02-26 Gen Motors Corp Fabric washing machine with means for regulating the temperature of the fabric prior to the spinning thereof
US5133200A (en) * 1990-08-27 1992-07-28 Kabushiki Kaisha Toshiba Washing machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154279A (ja) * 1991-12-03 1993-06-22 Matsushita Electric Ind Co Ltd 全自動洗濯機
JPH0819686A (ja) * 1994-07-07 1996-01-23 Hitachi Ltd 洗濯機およびその脱水制御方法
JP3398073B2 (ja) * 1998-09-30 2003-04-21 三洋電機株式会社 洗濯機
KR100808161B1 (ko) * 2001-12-17 2008-02-29 엘지전자 주식회사 세탁기 및 그 탈수 제어방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078700A (en) * 1959-01-19 1963-02-26 Gen Motors Corp Fabric washing machine with means for regulating the temperature of the fabric prior to the spinning thereof
US5133200A (en) * 1990-08-27 1992-07-28 Kabushiki Kaisha Toshiba Washing machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090277505A1 (en) * 2008-05-06 2009-11-12 Daewoo Electronics Corporation Method of controlling drainage of wash water remaining in washing machine
CN102057095A (zh) * 2008-05-06 2011-05-11 大宇电子株式会社 洗衣机的残留水排放控制方法
US8997288B2 (en) * 2008-05-06 2015-04-07 Daewoo Electronics Corporation Method of controlling drainage of wash water remaining in a washing machine
CN105908445A (zh) * 2016-04-22 2016-08-31 广东格兰仕集团有限公司 滚筒洗衣机的偏心大小识别方法
CN113981651A (zh) * 2020-07-27 2022-01-28 青岛海尔洗衣机有限公司 一种洗衣机的控制方法

Also Published As

Publication number Publication date
KR20040046228A (ko) 2004-06-05

Similar Documents

Publication Publication Date Title
US7784133B2 (en) Washing machine and water level control method thereof
US7475444B2 (en) Washing machine and method of controlling the same
EP1772548B1 (en) Washing machine and method for controlling the same
US7269870B2 (en) Washing machine control method
US20060156766A1 (en) Washing machine with drying function
JP2005328873A (ja) ドラム式洗濯機
EP0796942B1 (en) Washer-dryer apparatus
JP4714028B2 (ja) 洗濯乾燥機
US20050102766A1 (en) Method and apparatus for spinning fabrics
KR20030090086A (ko) 세탁기의 헹굼 제어방법
JPH11114278A (ja) ランドリー機器
US7707671B2 (en) Dehydration controlling apparatus for washing machine and method thereof
JP2008183122A (ja) ドラム式洗濯機
JP3011636B2 (ja) ドラム式洗濯機
US20060143836A1 (en) Washing machine and method for controlling supply of water thereof
US20040154349A1 (en) Washing machine control method
JP5426283B2 (ja) ドラム式洗濯乾燥機
KR100721834B1 (ko) 드럼세탁기의 탈수 제어방법
KR20050105731A (ko) 드럼세탁기 및 그 제어방법
US20080216251A1 (en) Washing machine and rinsing control method of the same
US20040154643A1 (en) Method of controlling combination washer drier
JP3734326B2 (ja) ドラム式電気洗濯機
JP2004049644A (ja) 洗濯機
US20040154352A1 (en) Device and method for controlling drying of laundry in drum type washing machine
KR101031333B1 (ko) 세탁기의 제어방법

Legal Events

Date Code Title Description
AS Assignment

Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RYO, JAE CHUL;REEL/FRAME:015256/0434

Effective date: 20040330

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION