US20120222222A1 - Method for controlling washing machine - Google Patents

Method for controlling washing machine Download PDF

Info

Publication number
US20120222222A1
US20120222222A1 US13/358,271 US201213358271A US2012222222A1 US 20120222222 A1 US20120222222 A1 US 20120222222A1 US 201213358271 A US201213358271 A US 201213358271A US 2012222222 A1 US2012222222 A1 US 2012222222A1
Authority
US
United States
Prior art keywords
drum
time duration
acceleration
laundry
deceleration
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
US13/358,271
Other languages
English (en)
Inventor
Aekyung Chae
Youngjong KIM
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: CHAE, AEKYUNG, KIM, YOUNGJONG
Publication of US20120222222A1 publication Critical patent/US20120222222A1/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
    • 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
    • D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
    • D06F37/245—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • 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

Definitions

  • the present invention relates to a washing machine, and particularly, to a method for controlling a washing machine capable of compensating for a vibration characteristic due to an unbalanced state of a drum, by effectively controlling a ball balancer for compensating for a balance of a rotary body such as a drum.
  • a washing machine serves to accelerate a chemical operation of a detergent by forcibly forming a current of washing water inside a drum with using a mechanical force, and serves to enhance a washing effect by applying a physical operation such as frictions or impacts to laundry.
  • FIG. 1 is a view showing a top load type of washing machine in accordance with the conventional art, in which laundry is put through an upper part of the washing machine under a configuration that a shaft is vertically disposed.
  • the washing machine 10 comprises a cabinet 8 which forms the appearance, a reservoir (or tub) 1 disposed in the cabinet 8 , and a drum 2 rotatably disposed in the reservoir 1 .
  • the drum is provided with a rotatable pulsator 3 at a lower part thereof, and the drum and the pulsator 3 are driven by being connected to a shaft 5 disposed in a vertical direction and connected to a driving motor 7 .
  • the washing machine has a washing process and a dehydrating process.
  • the pulsator 3 , or the pulator 3 and the drum 2 are rotated to rotate laundry and water.
  • the dehydrating process water is discharged and the drum 2 is rotated with a high speed, thereby removing water from laundry by a centrifugal force.
  • the reservoir 1 is suspended at a cabinet by a suspension load 4 .
  • a ball balancer 9 is provided at an upper part of the drum 2 in a circumferential direction.
  • the ball balancer 9 serves to compensate for an unbalance of the drum due to a concentrated state of laundry inside the drum.
  • the ball balancer 9 is configured as a ring-shaped racer 9 c having therein a plurality of metallic balls 9 c .
  • fluid 9 b such as oil is filled in the racer 9 a.
  • the ball balancer 9 moves in a direction for compensating for the unbalance by a difference of a centrifugal force. As a result, the ball balancer 9 makes the drum recover a balanced state.
  • balls provided in a general ball balancer are not rapidly distributed since fluid is filled in the ball balancer.
  • an unbalance of the drum becomes severe at an early dehydrating process. This may increase vibrations. Furthermore, this may cause the reservoir (tub) to collide with the cabinet due to the unbalanced state of the drum.
  • an aspect of the detailed description is to provide a method for controlling a washing machine capable of allowing a drum to maintain a balanced state, by uniformly distributing balls disposed in a ball balancer, before the drum starts to rotate during a dehydrating process, etc. when an unbalance may occur.
  • Another aspect of the detailed description is to provide a method for controlling a washing machine capable of reducing vibrations of a drum and preventing a reservoir from colliding with a cabinet, by allowing a drum to maintain a balanced state by controlling a ball balancer.
  • a method for controlling a washing machine having a drum where a ball balancer is installed comprising: accelerating the drum having laundry therein for a first time duration (t 1 ) until the drum reaches a reference speed from a stationary state; and decelerating the drum for a second time duration (t 2 ) longer than the first time duration (t 1 ) until the drum reaches the stationary state from the state having the reference speed.
  • the second time duration (t 2 ) may be longer than the first time duration (t 1 ) by at least two times.
  • the first time duration may be 5 seconds, and the second time duration may be 10 seconds or more.
  • the reference speed may be 80 rpm.
  • the acceleration and the deceleration of the drum may be performed a plurality of times in a repeated manner.
  • the acceleration and the deceleration of the drum may be repeated with a constant period.
  • a predetermined standstill state may be implemented.
  • a speed difference between laundry and the ball balancer may increase. This may allow the balls to move in a is direction for compensating for an unbalanced state of the drum. Accordingly, the drum may be rapidly accelerated and then slowly decelerated for uniform distributions of the balls.
  • a dehydrating process may be started after the acceleration and the deceleration of the drum. This may allow the balls inside the ball balancer to be uniformly distributed by the acceleration and the deceleration of the drum, before a dehydrating process of the washing machine is started.
  • a method for controlling a washing machine having a drum where a ball balancer is installed comprising: a washing process for performing a washing operation by supplying washing water into the drum, and by stirring laundry; and a dehydrating process for discharging the washing water contained in the drum, and separating the washing water contained in the laundry from the laundry, wherein the dehydrating process comprises a discharging step of discharging the washing water contained in the drum, a balancing step of compensating for a balance of the drum, and a dehydrating step of separating the washing water from the laundry inside the drum by rotating the drum with a high speed, wherein in the balancing step, the balls disposed in the ball balancer are made to be uniformly distributed by acceleration and deceleration of the drum before the dehydrating step.
  • the drum having the laundry therein may be accelerate for a first time duration (t 1 ) until the drum reaches a reference speed from a stationary state, and then the drum may be decelerated for a second time duration (t 2 ) longer than the first time duration (t 1 ) until the drum reaches the stationary state from the state having the reference speed.
  • the acceleration and the deceleration of the drum may be performed with a constant period.
  • the acceleration and the deceleration of the drum may be repeated a plurality of times.
  • a predetermined standstill state may be implemented.
  • the balls may be made to be uniformly distributed in the ball balancer before a dehydrating process when an unbalance may easily occur. This may allow the drum to maintain a balanced state.
  • the ball balancer may be efficiently controlled to allow the drum to maintain a balanced state. This may reduce vibrations of the drum, and prevent the reservoir from colliding with the cabinet.
  • FIG. 1 is a schematic view of a washing machine in accordance with the conventional art
  • FIG. 2 is a schematic view of a ball balancer of the washing machine of FIG. 1 ;
  • FIGS. 3 and 4 are graphs each showing a change of a rotation speed of a drum according to a first embodiment of the present disclosure.
  • FIGS. 5 and 6 are schematic views showing a relative position of balls disposed in a ball balancer with respect to laundry according to a first embodiment of FIG. 3 .
  • the drum having laundry therein is accelerated for a first time duration (t 1 ) until the drum reaches a reference speed from a stationary state.
  • the drum is decelerated for a second time duration (t 2 ) longer than the first time duration (t 1 ) until the drum reaches the stationary state from the state having the reference speed.
  • the method is applied to a washing machine having a ball balancer in a drum.
  • the washing machine having a ball balancer in a drum is already well-known, and thus its detailed explanations will be omitted.
  • the washing machine is provided with a controller (not shown).
  • the controller is configured to determine a rotation speed of the drum, by controlling a driving motor which rotates the drum.
  • the drum is accelerated and decelerated in an alternating manner. More concretely, the drum having laundry therein is firstly accelerated for a first time duration (t 1 ) until it reaches a reference speed from a stationary state. Then, the drum is decelerated for a second time duration (t 2 ) longer than the first time duration (t 1 ) until the drum reaches the stationary state from the state having the reference speed.
  • a speed difference between laundry and the ball balancer may increase. This may allow the balls to move in a direction for compensating for an unbalanced state of the drum. As the drum is rapidly accelerated and then slowly decelerated, the balls are uniformly distributed in the ball balancer.
  • the first time duration (t 1 ) and the second time duration (t 2 ) may be set in various manners.
  • the second time duration (t 2 ) may be longer than the first time duration (t 1 ) by at least two times.
  • the first time duration may be 5 seconds, and the second time duration may be 10 seconds or more.
  • the balls may be uniformly distributed in the ball balancer by allowing the acceleration to be performed more rapidly than the deceleration.
  • the reference speed ( ⁇ 0 ) may be also set in various manners. As aforementioned, as a speed difference between laundry and the ball balancer increases, the balls move in a direction for compensating for an unbalanced state of the drum. Accordingly, it is preferable to increase the reference speed for a large speed difference.
  • the driving motor for rotating the drum has to have a limited capacity.
  • the reference speed may be 80 rpm.
  • the capacity is limited with consideration of a performance of the driving motor of a general washing machine.
  • the acceleration and the deceleration of the drum may be repeatedly performed a plurality of times. As shown in FIG. 3 , the acceleration and the deceleration of the drum may be periodically performed.
  • the balls inside the ball balancer move in fluid. Accordingly, the repeated accelerations and decelerations may allow the balls to be re-aligned, thereby enhancing a balance of the drum.
  • a standstill time duration (t 3 ) may be implemented, which is shown in FIG. 4 . Due to the standstill time duration (t 3 ), an excessive load may be prevented from being applied to the driving motor of the drum, and the balls may move in the fluid filled in the ball balancer for a sufficient time. This may allow a position of the balls to be efficiently controlled.
  • FIGS. 5 and 6 show that positions of the balls inside the ball balancer are re-aligned by controlling the drum of the washing machine.
  • FIG. 5 shows a state prior to a dehydrating process, in which the balls 35 of the ball balancer 30 are positioned at the same side as laundry 40 .
  • the position of the balls 35 inside the ball balancer is re-aligned during a dehydrating process as shown in FIG. 5 . This may allow compensation for an unbalance of the drum.
  • FIG. 6 shows a state prior to a dehydrating process, in which the balls 35 of the ball balancer 30 are positioned in a direction facing the laundry 40 , i.e., a direction for compensating for an unbalance of the drum.
  • the position of the balls 35 inside the ball balancer is nearly maintained as shown in FIG. 6 during the dehydrating process.
  • the position of the balls inside the ball balancer is re-aligned before a dehydrating process when an unbalance of the drum may easily occur due to rotations of the drum. This may allow the drum to maintain a balanced state.
  • the reason is because it is efficient to perform the acceleration and the deceleration before the rotary operation of the drum when an unbalance of the drum may easily occur due to a concentrated state of the laundry.
  • the washing machine has a washing process and a dehydrating process.
  • washing water is supplied into the drum and the laundry is stirred.
  • the dehydrating process the water washing inside the drum is discharged, and the washing water contained in the laundry is separated from the laundry.
  • the dehydrating process includes a discharging step of discharging the to washing water inside the drum, a balancing step of compensating for a balance of the drum, and a dehydrating step of separating the washing water from the laundry inside the drum by rotating the drum with a high speed.
  • the balls disposed in the ball balancer are made to be uniformly distributed by acceleration and deceleration of the drum before the dehydrating step. More concretely, in the balancing step, the drum having the laundry therein is accelerated for a first time duration (t 1 ) until the drum reaches a reference speed from a stationary state. Then, the drum is decelerated for a second time duration (t 2 ) longer than the first time duration (t 1 ) until the drum reaches the stationary state from the state having the reference speed.
  • the acceleration and the deceleration of the drum are repeated with a constant period.
  • the acceleration and the deceleration of the drum are performed a plurality of times in a repeated manner. After the acceleration and decoration of the drum, a predetermined standstill state may be implemented. This was aforementioned, and thus detailed explanations thereof will be omitted.
  • the balls inside the ball balancer are uniformly distributed by the acceleration and the deceleration of the drum. This may allow the drum to maintain a balanced state.
  • the balls inside the ball balancer are uniformly distributed before the dehydrating process when an unbalance of the drum may easily occur. This may prevent excessive vibrations from occurring from the drum and the reservoir (tub).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US13/358,271 2011-03-03 2012-01-25 Method for controlling washing machine Abandoned US20120222222A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0019131 2011-03-03
KR1020110019131A KR20120100321A (ko) 2011-03-03 2011-03-03 세탁기의 제어방법

Publications (1)

Publication Number Publication Date
US20120222222A1 true US20120222222A1 (en) 2012-09-06

Family

ID=46752328

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/358,271 Abandoned US20120222222A1 (en) 2011-03-03 2012-01-25 Method for controlling washing machine

Country Status (4)

Country Link
US (1) US20120222222A1 (fr)
KR (1) KR20120100321A (fr)
CN (1) CN103403244A (fr)
WO (1) WO2012118278A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824232A1 (fr) * 2013-07-12 2015-01-14 Samsung Electronics Co., Ltd Machine à laver avec compensateurs et son procédé de commande
US20170321363A1 (en) * 2014-12-12 2017-11-09 Haier Asia Co., Ltd. Dewatering machine
US10344417B2 (en) * 2014-06-09 2019-07-09 Lg Electronics Inc. Washing apparatus
US11142860B2 (en) 2016-08-08 2021-10-12 Samsung Electronics Co., Ltd. Washing machine and control method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9809916B2 (en) * 2014-02-19 2017-11-07 Samsung Electronics Co., Ltd. Washing machine with balancer and control method thereof
CN107541897B (zh) * 2016-06-28 2021-08-20 青岛海尔洗衣机有限公司 洗衣机及其脱水控制方法
KR20190125658A (ko) 2018-04-30 2019-11-07 주식회사 위니아대우 세탁기 및 언밸런스 제어방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505369B1 (en) * 1999-06-23 2003-01-14 Diehl Ako Stiftung & Co. Kg Method of measuring the loading of a washing drum
US6578225B2 (en) * 2000-05-25 2003-06-17 Skf Autobalance Systems Ab Low-speed prebalancing for washing machines
US20040194226A1 (en) * 2002-12-28 2004-10-07 Kim Jong Ho Method for detecting dewatering load in washing machine and washing machine control method using the same
US20070050918A1 (en) * 2005-09-05 2007-03-08 Lg Electronics Inc. Dehydration control apparatus and method for washing machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0182129B1 (ko) * 1996-06-26 1999-05-15 김광호 볼밸런서를 갖는 세탁기
KR19980065311A (ko) * 1997-01-08 1998-10-15 김광호 볼 밸런서
CN101173453A (zh) * 2006-10-30 2008-05-07 南京乐金熊猫电器有限公司 滚筒洗衣机的脱水方法
CN101173455A (zh) * 2006-10-30 2008-05-07 南京乐金熊猫电器有限公司 滚筒洗衣机的脱水方法
CN101173457A (zh) * 2006-10-30 2008-05-07 南京乐金熊猫电器有限公司 滚筒洗衣机的脱水方法
KR101407959B1 (ko) * 2008-01-22 2014-06-20 삼성전자주식회사 볼 밸런서를 구비한 드럼 세탁기 및 그 제어방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505369B1 (en) * 1999-06-23 2003-01-14 Diehl Ako Stiftung & Co. Kg Method of measuring the loading of a washing drum
US6578225B2 (en) * 2000-05-25 2003-06-17 Skf Autobalance Systems Ab Low-speed prebalancing for washing machines
US20040194226A1 (en) * 2002-12-28 2004-10-07 Kim Jong Ho Method for detecting dewatering load in washing machine and washing machine control method using the same
US20070050918A1 (en) * 2005-09-05 2007-03-08 Lg Electronics Inc. Dehydration control apparatus and method for washing machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824232A1 (fr) * 2013-07-12 2015-01-14 Samsung Electronics Co., Ltd Machine à laver avec compensateurs et son procédé de commande
US9637854B2 (en) 2013-07-12 2017-05-02 Samsung Electronics Co., Ltd. Washing machine with balancer and control method thereof
US10344417B2 (en) * 2014-06-09 2019-07-09 Lg Electronics Inc. Washing apparatus
US20170321363A1 (en) * 2014-12-12 2017-11-09 Haier Asia Co., Ltd. Dewatering machine
US11142860B2 (en) 2016-08-08 2021-10-12 Samsung Electronics Co., Ltd. Washing machine and control method thereof

Also Published As

Publication number Publication date
WO2012118278A3 (fr) 2012-12-20
WO2012118278A2 (fr) 2012-09-07
KR20120100321A (ko) 2012-09-12
CN103403244A (zh) 2013-11-20

Similar Documents

Publication Publication Date Title
US20120222222A1 (en) Method for controlling washing machine
JP2755567B2 (ja) ドラム型洗濯機の洗濯槽
EP2470711B1 (fr) Procédé de commande d'un lave-linge
US20130167596A1 (en) Washing machine
KR20050123433A (ko) 드럼세탁기의 탈수 제어방법
WO2013161251A1 (fr) Machine à laver à tambour
CN102575404B (zh) 洗衣机的控制方法
EP3252201B1 (fr) Machine à laver et son procédé de commande
CN104246050A (zh) 滚筒式洗衣机
KR101029798B1 (ko) 드럼 세탁기의 탈수 제어 방법
US20090173110A1 (en) Washing machine
CN104846581A (zh) 具有平衡器的洗衣机及其控制方法
KR100790630B1 (ko) 드럼식 세탁기
CN110678598B (zh) 洗涤物处理设备的脱水程序控制方法
JP5176662B2 (ja) ドラム式洗濯機
EP2470710B1 (fr) Procédé de commande d'un lave-linge
CN105274771A (zh) 滚筒式洗衣机
JP2013123599A (ja) 洗濯機
JP6976037B2 (ja) 洗濯機
CN107366131B (zh) 洗衣机及用于洗衣机的平衡环
JP2016137092A (ja) 洗濯機
JPH1176680A (ja) ドラム式洗濯機
JP2015223318A (ja) 洗濯機
US20140109628A1 (en) Drum washing machine
WO2006072907A1 (fr) Machine a laver/secher

Legal Events

Date Code Title Description
AS Assignment

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

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHAE, AEKYUNG;KIM, YOUNGJONG;REEL/FRAME:027622/0990

Effective date: 20120117

STCB Information on status: application discontinuation

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