US20060048548A1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
US20060048548A1
US20060048548A1 US11/110,794 US11079405A US2006048548A1 US 20060048548 A1 US20060048548 A1 US 20060048548A1 US 11079405 A US11079405 A US 11079405A US 2006048548 A1 US2006048548 A1 US 2006048548A1
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US
United States
Prior art keywords
drum
washing machine
rotation
reverse
angles
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
US11/110,794
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English (en)
Inventor
Chang Park
Hyun Kim
Chang 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.)
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
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, CHANG HYUN, KIM, HYUN BAE, PARK, CHANG JOO
Publication of US20060048548A1 publication Critical patent/US20060048548A1/en
Abandoned legal-status Critical Current

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    • 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

Definitions

  • the present invention relates to a washing machine, and more particularly to a drum type washing machine having a drum adapted to rotate about a horizontal rotation axis.
  • a conventional drum type washing machine generally includes a water tub installed in a machine body and adapted to contain wash or rinsing water, and a drum installed in the water tub, the drum being rotated by a driving force from a motor and being adapted to carry out laundry wash and spin-dry cycles.
  • a drum is perforated with a plurality of small holes, allowing the wash or rinsing water to flow between the drum and the water tub and, in the spin-dry cycle, to centrifugally drain water from laundry, the water to be discharged into a space between the drum and the water tub through the small holes.
  • Japanese Patent Laid-Open No. H09-276582 discusses minimizing damage to the laundry by repeatedly swinging the drum during the rotation thereof within an extent not causing movement of the laundry. In this case, however, since a two-revolution operation of the drum is added in the course of laundry douse and wash cycles for overturning the laundry, resulting in a limited reduction in damage to the laundry.
  • the wash cycle of the laundry is divided into first half and second half periods.
  • the wash water in the water tub is kept at a first level and the drum rotates by a first rotation angle, causing the laundry to be dropped and overturned.
  • the wash water in the water tub is kept at a second level higher than the first level and the drum rotates by a second rotation angle smaller than the first rotation angle, allowing the laundry to be swung in a completely immersed state in the wash water so as to reduce damage to the laundry.
  • the laundry in order to sufficiently douse the laundry with the wash water kept at a low level in the laundry douse cycle, the laundry must be dropped from a high swing angle of the drum. This may cause damage to the laundry.
  • the present invention has been made in view of the problems involved with the above-described conventional drum type washing machines, and an aspect of the invention is to provide a drum type washing machine which can minimize damage to laundry during washing and enables effective washing of the laundry.
  • a washing machine including: a water tub; a drum in the water tub, the drum being rotatable in a forward rotation direction at a forward rotation angle and a reverse rotation direction opposite of the forward direction at a reverse rotation angle; and a control unit adapted to control the rotation directions and angles to yield asymmetric swing motion of the drum.
  • a washing machine including: a water tub; a drum in the water tub, the drum being rotatable in a forward direction and a reverse rotation direction opposite of the forward direction; and a control unit adapted to control the rotation of the drum to yield an asymmetric swing motion of the drum.
  • the control unit controls forward and reverse rotation angles so that a reference position of the drum is displaced in the forward rotation direction.
  • a washing machine control method including: determining whether a set wash mode is an asymmetrical swing mode in which a drum is alternately rotated in a forward direction and a reverse direction by respective forward and reverse rotation angles; asymmetrically swinging the drum, when the set wash mode is the asymmetrical swing mode, so that the drum alternately rotates in the forward direction and the reverse direction by the respective forward and reverse rotation angles, the alternately rotating causing one of a net forward rotation of the drum and a net reverse rotation of the drum.
  • FIG. 1 is a perspective view illustrating a drum type washing machine according to an embodiment of the present invention
  • FIG. 2 is a block diagram illustrating a control system of the washing machine shown in FIG. 1 ;
  • FIG. 3 is a diagrammatic view illustrating a drum and water tub of the washing machine shown in FIG. 1 ;
  • FIGS. 4A and 4B are diagrammatic views illustrating the asymmetric swing motion of the washing machine according to the embodiment of the present invention.
  • FIG. 5 is a diagrammatic view illustrating gradual forward rotation of the drum caused by the asymmetric swing motion of the washing machine according to the embodiment of the present invention
  • FIG. 6 is a graph explaining the concept of the gradual forward rotation of the drum shown in FIG. 5 ;
  • FIG. 7 is a flow chart illustrating a control method of the washing machine according to the embodiment of the present invention.
  • FIG. 1 is a perspective view illustrating a drum type washing machine according to an embodiment of the present invention.
  • the drum type washing machine of the present embodiment includes a water tub 102 installed in a machine body 100 and adapted to contain wash or rinsing water.
  • Installed in the water tub 102 is a drum 108 , which rotates upon receiving a driving force from a motor 110 and is adapted to carry out laundry wash and spin-dry cycles.
  • Such a drum 108 is perforated with a plurality of small holes at a peripheral wall thereof, allowing the wash or rinsing water to flow between the drum 108 and the water tub 102 and, in the spin-dry cycle, water centrifugally drained from laundry to be discharged into a space between the drum 108 and the water tub 102 through the small holes.
  • the laundry in the drum 108 is raised along an inner peripheral wall surface of the drum 108 , and then dropped due to gravity from the vicinity of an apex (i.e., the highest point), so that the laundry is washed by way of shock and friction generated during the dropping.
  • an apex i.e., the highest point
  • FIG. 2 is a block diagram illustrating a control system of the washing machine shown in FIG. 1 .
  • the washing machine includes: a control unit 202 , a water level sensor 204 , and an input unit 206 .
  • the control unit 202 controls the general operation of the washing machine including douse, wash, rinsing, spin-dry and dehydration (drying) cycles.
  • the water level sensor 204 detects the level of the wash water supplied in the water tub 102 and delivers the detected water level value to the control unit 202 .
  • the input unit 206 enables for a user to select a desired wash mode, and transmits the selected wash mode to the control unit 202 .
  • the drum type washing machine also includes a drive unit 210 adapted to drive the motor 110 , a drain pump 116 , a dehydration heater 216 , and a display device 218 .
  • the motor 110 rotates the drum 108 in forward or reverse directions for specified periods, and in the spin-dry cycle, rotates the drum 108 at a high speed.
  • the drain pump 116 forcibly discharges the wash water from the water tub 102 , and the dehydration heater 216 heats air introduced into the water tub 102 , causing dehydration (drying) of the laundry using the heated air.
  • the display device 218 indicates the operation state of the washing machine to a user.
  • FIG. 3 is a diagrammatic view illustrating the drum 108 and the water tub 102 of the washing machine shown in FIG. 1 .
  • the drum 108 is positioned inside the water tub 102 .
  • the water is supplied into the water tub 102 , and flows into the drum 108 through the small holes perforated throughout the peripheral wall of the drum 108 .
  • the drum 108 rotates in the forward or reverse directions.
  • FIGS. 4A and 4B are diagrammatic views illustrating such an asymmetric swing motion of the washing machine according to the present embodiment, FIG. 4A showing a reverse rotation of the drum 108 , and FIG. 4B showing a forward rotation of the drum 108 .
  • a forward rotation angle is larger than a reverse rotation angle.
  • the drum 108 rotates in a reverse direction CW by an angle of 45° as shown in FIG. 4A , and then rotates in a forward direction CCW by an angle of 60°, resulting in the forward rotation of 15°. That is, due to the difference between the forward and reverse rotation angles as stated above, even if the drum 108 alternately rotates in the forward direction CCW and the reverse direction CW, the net effect is that drum 108 gradually rotates in the forward direction CCW by an increment of 15° according to the progress of the swing motion. Consequently, laundry 402 is rotated in the forward direction CCW by an increment of 15°.
  • FIG. 5 is a diagrammatic view illustrating the gradual forward rotation of the drum 108 caused by the asymmetric swing motion of the washing machine according to the present embodiment.
  • the drum 108 rotates reverse by the specified angle to set an initial position (as indicated by an arrow 0 shown in FIG. 5 ). Then, starting from the initial position, the drum 108 alternately rotates in the forward direction (as indicated by arrows 1 , 3 and 5 ) and in the reverse direction (as indicated by arrows 2 and 4 ), carrying out the asymmetric swing motion.
  • the drum 108 gradually rotates in the forward direction CCW by the increment of 15° as explained in conjunction with FIGS. 4A and 4B . That is, the drum 108 simultaneously carries out both the swing motion and the gradual forward rotation.
  • FIG. 6 is a graph explaining the concept of the gradual forward rotation of the drum 108 shown in FIG. 5 .
  • an x-axis represents time
  • an y-axis represents a velocity command.
  • FIG. 6 after the drum 108 is initialized in position as it rotates reverse (as indicated by reference numeral 0 ), it alternately carries out forward rotations (as indicated by reference numerals 1 , 3 and 5 ) and reverse rotations (as indicated by reference numerals 2 and 4 ).
  • velocity commands (amplitudes) of the forward and reverse rotations are the same as each other, a forward rotation angle is larger than a reverse rotation angle since a forward rotation time is longer than a reverse rotation time.
  • FIG. 7 is a flowchart illustrating a control method of a washing machine according to the present embodiment.
  • the desired wash mode is set (operation 702 ).
  • the drum is controlled in a rotational direction so that it alternately rotates forward and reverse by the specified forward and reverse rotation angles (operation 708 ). After the lapse of a specified time corresponding to the swing mode, the swing mode ends (operation 710 ).
  • the above-described embodiment of present invention provides a drum type washing machine which can minimize damage to laundry, specifically, silk or wool laundry vulnerable by shock or friction caused during washing, as a result of carrying out asymmetric swing motion of a drum thereof. Further, according to the above-described embodiment of the present invention, since the drum simultaneously swings and gradually rotates forward, laundry can be easily overturned even by rotation of the drum across a small angle, resulting in a reduction of douse or wash time and enabling effective washing of the laundry. The gradual forward rotation, furthermore, enables continuous overturn of the laundry.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US11/110,794 2004-09-08 2005-04-21 Washing machine Abandoned US20060048548A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2004-71895 2004-09-08
KR1020040071895A KR20060023067A (ko) 2004-09-08 2004-09-08 세탁기

Publications (1)

Publication Number Publication Date
US20060048548A1 true US20060048548A1 (en) 2006-03-09

Family

ID=36155512

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/110,794 Abandoned US20060048548A1 (en) 2004-09-08 2005-04-21 Washing machine

Country Status (4)

Country Link
US (1) US20060048548A1 (ja)
EP (1) EP1634985A1 (ja)
JP (1) JP2006075587A (ja)
KR (1) KR20060023067A (ja)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090013480A1 (en) * 2005-04-11 2009-01-15 Bsh Bosch Und Siemens Hausgeraete Gmbh Method for washing shrinkable textiles and a washing machine for carrying out said method
US20100024137A1 (en) * 2008-08-01 2010-02-04 Myong Hum Im Washing machine and washing method therefor
US20100058543A1 (en) * 2008-09-05 2010-03-11 Byung Keol Choi Washing machine and washing method therefor
US20100242186A1 (en) * 2009-03-31 2010-09-30 Woo Young Kim Washing machine and washing method
US20100242184A1 (en) * 2007-06-20 2010-09-30 Bsh Bosch Und Siemens Hausgerte Gmbh Washing machine and method for treating laundry using foam
US20110030149A1 (en) * 2008-08-01 2011-02-10 In Ho Cho Control method of a laundry machine
US20110296628A1 (en) * 2009-02-17 2011-12-08 Xeros Limited Cleaning Apparatus
US8915972B2 (en) 2011-05-17 2014-12-23 Whirlpool Corporation Method and apparatus for determining load fall in a laundry treating appliance
US8966944B2 (en) 2008-08-01 2015-03-03 Lg Electronics Inc. Control method of a laundry machine
US9045853B2 (en) 2009-10-13 2015-06-02 Lg Electronics Inc. Laundry treating apparatus
US9206539B2 (en) 2008-04-29 2015-12-08 Lg Electronics Inc. Washing machine having washing course for shoes
US9234307B2 (en) 2009-07-27 2016-01-12 Lg Electronics Inc. Control method of a laundry machine
US9249534B2 (en) 2009-10-13 2016-02-02 Lg Electronics Inc. Laundry treating apparatus and method
US9695537B2 (en) 2009-07-27 2017-07-04 Lg Electronics Inc. Control method of a laundry machine
US9822473B2 (en) 2009-07-27 2017-11-21 Lg Electronics Inc. Control method of a laundry machine
US9932699B2 (en) 2009-02-11 2018-04-03 Lg Electronics Inc. Washing method and washing machine
US10533275B2 (en) 2009-07-27 2020-01-14 Lg Electronics Inc. Control method of a laundry machine
WO2021197878A1 (de) * 2020-03-30 2021-10-07 Miele & Cie. Kg Verfahren und steuereinheit zur waschmittelaktivierung für ein reinigungsgerät mit einer drehbaren rippenlosen trommel und reinigungsgerät

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101396978B1 (ko) * 2007-08-01 2014-05-19 엘지전자 주식회사 드럼방식 세탁장치의 제어방법
JP4695630B2 (ja) * 2007-09-05 2011-06-08 パナソニック株式会社 ドラム式洗濯機
DE102008021198B4 (de) * 2008-04-28 2016-10-20 Miele & Cie. Kg Verfahren zum Waschen von Textilien oder Schuhen in einer Waschmaschine
KR101526989B1 (ko) * 2008-04-30 2015-06-11 엘지전자 주식회사 드럼 세탁기의 제어방법
US8746015B2 (en) 2008-08-01 2014-06-10 Lg Electronics Inc. Laundry machine
US8713736B2 (en) 2008-08-01 2014-05-06 Lg Electronics Inc. Control method of a laundry machine
US8763184B2 (en) 2008-08-01 2014-07-01 Lg Electronics Inc. Control method of a laundry machine
KR101526977B1 (ko) * 2008-08-06 2015-06-11 엘지전자 주식회사 세탁기의 제어 방법
KR101674936B1 (ko) * 2009-08-11 2016-11-10 엘지전자 주식회사 세탁장치의 제어방법
CN109505092B (zh) * 2017-09-15 2021-05-25 无锡小天鹅电器有限公司 洗衣机控制方法及装置
JP7329723B2 (ja) * 2018-08-08 2023-08-21 パナソニックＩｐマネジメント株式会社 洗濯機
CN111058230B (zh) * 2018-10-15 2022-04-01 广东威灵电机制造有限公司 一种洗衣机控制方法及洗衣机
CN111058226B (zh) * 2018-10-15 2022-04-01 广东威灵电机制造有限公司 一种洗衣机控制方法及洗衣机
DE102020108764A1 (de) * 2020-03-30 2021-09-30 Miele & Cie. Kg Verfahren und Steuereinheit zum Betreiben eines Reinigungsgeräts in einem Schonwaschgang und Reinigungsgerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04193292A (ja) * 1990-11-27 1992-07-13 Brother Ind Ltd 脱水洗濯機
JP3651157B2 (ja) * 1996-02-15 2005-05-25 松下電器産業株式会社 洗濯機
JP3296712B2 (ja) * 1996-03-18 2002-07-02 シャープ株式会社 洗濯方法及び回転ドラム式全自動洗濯機
US7690063B2 (en) * 2002-05-09 2010-04-06 Whirlpool Corporation Random tumbling washing machine wash chamber for improving cleaning while minimizing mechanical damage to clothes
KR100651977B1 (ko) * 2003-10-16 2006-11-30 엘지전자 주식회사 드럼세탁기의 세탁 제어방법

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090013480A1 (en) * 2005-04-11 2009-01-15 Bsh Bosch Und Siemens Hausgeraete Gmbh Method for washing shrinkable textiles and a washing machine for carrying out said method
US20100242184A1 (en) * 2007-06-20 2010-09-30 Bsh Bosch Und Siemens Hausgerte Gmbh Washing machine and method for treating laundry using foam
US9926660B2 (en) * 2007-06-20 2018-03-27 BSH Hausgeräte GmbH Washing machine and method for treating laundry using foam
US9206539B2 (en) 2008-04-29 2015-12-08 Lg Electronics Inc. Washing machine having washing course for shoes
US20110030149A1 (en) * 2008-08-01 2011-02-10 In Ho Cho Control method of a laundry machine
US8966944B2 (en) 2008-08-01 2015-03-03 Lg Electronics Inc. Control method of a laundry machine
US20100024137A1 (en) * 2008-08-01 2010-02-04 Myong Hum Im Washing machine and washing method therefor
US20100058543A1 (en) * 2008-09-05 2010-03-11 Byung Keol Choi Washing machine and washing method therefor
US9932699B2 (en) 2009-02-11 2018-04-03 Lg Electronics Inc. Washing method and washing machine
US20110296628A1 (en) * 2009-02-17 2011-12-08 Xeros Limited Cleaning Apparatus
US9416478B2 (en) 2009-03-31 2016-08-16 Lg Electronics Inc. Washing machine and washing method
US20100242186A1 (en) * 2009-03-31 2010-09-30 Woo Young Kim Washing machine and washing method
US9234307B2 (en) 2009-07-27 2016-01-12 Lg Electronics Inc. Control method of a laundry machine
US9695537B2 (en) 2009-07-27 2017-07-04 Lg Electronics Inc. Control method of a laundry machine
US9822473B2 (en) 2009-07-27 2017-11-21 Lg Electronics Inc. Control method of a laundry machine
US10533275B2 (en) 2009-07-27 2020-01-14 Lg Electronics Inc. Control method of a laundry machine
US9249534B2 (en) 2009-10-13 2016-02-02 Lg Electronics Inc. Laundry treating apparatus and method
US9045853B2 (en) 2009-10-13 2015-06-02 Lg Electronics Inc. Laundry treating apparatus
US8915972B2 (en) 2011-05-17 2014-12-23 Whirlpool Corporation Method and apparatus for determining load fall in a laundry treating appliance
WO2021197878A1 (de) * 2020-03-30 2021-10-07 Miele & Cie. Kg Verfahren und steuereinheit zur waschmittelaktivierung für ein reinigungsgerät mit einer drehbaren rippenlosen trommel und reinigungsgerät

Also Published As

Publication number Publication date
EP1634985A1 (en) 2006-03-15
JP2006075587A (ja) 2006-03-23
KR20060023067A (ko) 2006-03-13

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AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PARK, CHANG JOO;KIM, HYUN BAE;KIM, CHANG HYUN;REEL/FRAME:016499/0079

Effective date: 20050406

STCB Information on status: application discontinuation

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