US20080216251A1 - Washing machine and rinsing control method of the same - Google Patents

Washing machine and rinsing control method of the same Download PDF

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Publication number
US20080216251A1
US20080216251A1 US12/000,328 US32807A US2008216251A1 US 20080216251 A1 US20080216251 A1 US 20080216251A1 US 32807 A US32807 A US 32807A US 2008216251 A1 US2008216251 A1 US 2008216251A1
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United States
Prior art keywords
rinsing
spin
drying
laundry
control method
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
US12/000,328
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English (en)
Inventor
Byoung Mock Kahm
Young Chul Jo
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
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Samsung Electronics Co Ltd
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Filing date
Publication date
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Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JO, YOUNG CHUL, KAHM, BYOUNG MOCK
Publication of US20080216251A1 publication Critical patent/US20080216251A1/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
    • 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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
    • 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
    • D06F2103/68—Operation mode; Program phase
    • 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
    • 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

  • Embodiments relate to a washing machine and a rinsing control method of the same, and, more particularly, to a washing machine and a rinsing control method of the same that is capable of controlling spin-drying revolutions per minute (RPM) during rinsing and rinsing time, thereby improving the rinsing efficiency.
  • RPM spin-drying revolutions per minute
  • a washing machine (normally, a drum type washing machine) is a machine, including a water tub to receive water (wash water or rinse water) and a cylindrical rotary drum rotatably mounted in the water tub to receive laundry, that washes the laundry by lifting and dropping the laundry in the rotary drum along the inner surface of the rotary drum during the rotation of the rotary drum.
  • This washing machine detects the weight of laundry (the amount of load) to decide the amount of wash water and rinse water according to a user's selection of a washing course, supplies water (specifically, wash water) having an amount sufficient to wash the laundry and detergent into the water tub according to the decided amount of wash water, and performs a washing operation while detergent water (water+detergent) is forwarded to the laundry and the laundry is dropped by the rotation of the rotary drum.
  • water specifically, wash water having an amount sufficient to wash the laundry and detergent into the water tub according to the decided amount of wash water
  • the washing machine After the completion of the washing operation, the washing machine performs drainage and intermediate spin-drying. Subsequently, the washing machine supplies water (specifically, rinse water) having an amount sufficient to rinse the laundry into the water tub according to the decided amount of rinse water, and performs a rinsing operation while water is brought into contact with the laundry and the laundry is dropped by the rotation of the rotary drum.
  • water specifically, rinse water
  • the washing machine After the completion of the rinsing operation, the washing machine performs drainage and intermediate spin-drying in the same manner as the washing operation. At this time, the intermediate spin-drying RPM is set to be a predetermined number of rotations.
  • the rinsing operation is repeated with a predetermined basic rinsing time (approximately 1 minute to 1 minute and 30 seconds) for a predetermined number of times (or a number of times selected by a user).
  • the detergent supplied into the rotary drum, may be settled on the bottom of the rotary drum, with the result that the detergent is not sufficiently dissolved or mixed with the water.
  • the rinsing is performed with the predetermined rinsing time and at the intermediate spin-drying RPM without considering the above-mentioned problem.
  • the detergent, contained in the laundry is not separated from the laundry, and therefore, the laundry has residual detergent, whereby the rinsing efficiency is lowered.
  • a washing machine and a rinsing control method of the same that is capable of controlling spin-drying RPM during rinsing and rinsing time, thereby improving the rinsing efficiency.
  • a washing machine and a rinsing control method of the same that is capable of increasing spin-drying RPM before the final rinsing, such that the spin-drying RPM before the final rinsing is higher by a specific percentage than a predetermined RPM, to separate residual detergent, contained in laundry, from the laundry, thereby accomplishing effective rinsing.
  • a washing machine and a rinsing control method of the same that is capable of adding soaked rinsing time, during the final rinsing, to completely dissolve residual detergent contained in laundry, thereby further improving the rinsing efficiency.
  • a rinsing control method of a washing machine including a rotary drum to receive laundry and detergent and a motor to rotate the rotary drum, the rinsing control method including determining whether a current spin-drying process is an intermediate spin-drying during rinsing, and, when the current spin-drying process is the intermediate spin-drying, operating the motor at the number of rotations greater than a predetermined spin-drying revolutions per minute (RPM) to perform high-speed spin-drying through the high-speed rotation of the rotary drum.
  • RPM spin-drying revolutions per minute
  • the intermediate spin-drying during rinsing may be spin-drying before a final rinsing.
  • the number of rotations of the motor may be greater by at least 10% than the predetermined spin-drying RPM.
  • the number of rotations of the motor may be greater by 10 to 20% than the predetermined spin-drying RPM.
  • an operation of performing high-speed spin-drying may include rotating the motor at a high speed to squeeze out residual detergent, contained in the laundry, from the laundry during the intermediate spin-drying before the final rinsing.
  • a rinsing control method of a washing machine including a rotary drum to receive laundry and detergent and a motor to rotate the rotary drum, the rinsing control method including determining whether a current rinsing process is a final rinsing, and, when the current rinsing process is the final rinsing, controlling rinsing time to remove residual detergent from the laundry.
  • an operation of controlling the rinsing time may include adding soaked rinsing time to a predetermined rinsing time to increase the rinsing time.
  • rinsing and soaking processes may be repeated at regular intervals, during the soaked rinsing time, to dissolve the residual detergent in the laundry.
  • the soaked rinsing time may be at least 5 minutes.
  • the soaked rinsing time may be 5 to 10 minutes.
  • the soaked rinsing time may be variable depending upon the amount of laundry.
  • a rinsing control method of a washing machine including a rotary drum to receive laundry and detergent and a motor to rotate the rotary drum, the rinsing control method including determining whether a current operation is a rinsing operation, and, when the current operation is the rinsing operation, controlling intermediate spin-drying revolutions per minute (RPM) and rinsing time to remove residual detergent from the laundry.
  • RPM revolutions per minute
  • an operation of controlling the intermediate spin-drying RPM includes operating the motor at the number of rotations greater than a predetermined spin-drying RPM, during a spin-drying process before the final rinsing, to perform high-speed spin-drying through the high-speed rotation of the rotary drum.
  • an operation of controlling the rinsing time includes adding soaked rinsing time to a predetermined rinsing time, during the final rinsing, to increase the rinsing time.
  • a washing machine including a rotary drum to receive laundry and detergent, a motor to rotate the rotary drum, and a control unit to control a spin-drying process, during rinsing to remove residual detergent from the laundry, by operating the motor at the number of rotations greater than a predetermined spin-drying RPM to perform high-speed spin-drying through the high-speed rotation of the rotary drum.
  • a control unit may control the motor to perform the high-speed spin-drying during an intermediate spin-drying process before the final rinsing.
  • a motor may be operated at the number of rotations greater by at least 10% than the predetermined spin-drying RPM.
  • a motor may be operated at the number of rotations greater by 10 to 20% than the predetermined spin-drying RPM.
  • a washing machine including a rotary drum to receive laundry and detergent, a motor to rotate the rotary drum, and a control unit to determine whether a current rinsing process is a final rinsing, and, when the rinsing process is the final rinsing, control rinsing time to remove residual detergent from the laundry.
  • a control unit may add soaked rinsing time, during which rinsing and soaking processes are repeated, to a predetermined rinsing time, to increase the rinsing time.
  • FIG. 1 is a sectional view illustrating a structure of a washing machine according to an exemplary embodiment
  • FIG. 2 is a control block diagram of the washing machine according to an exemplary embodiment.
  • FIGS. 3A and 3B are flow charts illustrating a rinsing control method of the washing machine according to an exemplary embodiment.
  • FIG. 1 is a sectional view illustrating the structure of a washing machine according to an exemplary embodiment.
  • the washing machine includes a drum-type water tub 11 mounted in a machine body 10 to receive water (wash water or rinse water) and a cylindrical rotary drum 12 rotatably mounted in the water tub 11 .
  • the water tub 11 is mounted at a predetermined angle ⁇ to the installation surface of the washing machine such that a front part 11 a , having an inlet 11 b formed therein, is located at a higher position than a rear part 11 c .
  • the rotary drum 12 is mounted in the water tub 11 at the same inclination angle as the water tub 11 such that a front part 12 a , having an inlet 12 a formed therein, is located at a higher position than a rear part 12 c.
  • the rotary drum 12 is mounted such that a rotation axis A of the rotary drum 12 is at the predetermined angle ⁇ to the installation surface of the washing machine while the front part 12 a , having the inlet 12 a formed therein, is directed forward.
  • a rotary shaft 13 coupled to the center of the rear part 12 c of the rotary drum 12 , is rotatably supported at the rear central part of the water tub 11 such that the rotary drum 12 can be rotated in the water tub 11 .
  • the reason why the rotation axis A of the rotary drum 12 is at the predetermined angle ⁇ to the installation surface of the washing machine is that, when water is supplied into the rotary drum 12 , a predetermined amount of water necessary for washing and rinsing is gathered in the rotary drum 12 such that laundry is wetted by the water.
  • a plurality of through-holes 12 d In the circumference of the rotary drum 12 are formed a plurality of through-holes 12 d . Inside the rotary drum 12 are mounted a plurality of lifters 14 to raise and drop laundry in the rotary drum 12 during the rotation of the rotary drum 12 .
  • a drive unit such as a motor 15 , to rotate the rotary shaft 13 , connected to the rotary drum 12 , such that washing, rinsing, and spin-drying operations are performed.
  • the motor 15 includes a stator 15 a fixed to the rear part 11 c o f the water tub 11 , a rotor 15 b rotatably disposed around the stator 15 a , and a rotary plate 15 c connected between the rotor 15 b and the rotary shaft 13 .
  • a washing heater 16 to heat water (specifically, detergent water) supplied into the water tub 11 .
  • an inlet 17 b corresponding to the inlet 12 a of the rotary drum 12 and the inlet 11 b of the water tub 11 such that laundry can be put into or taken out from the rotary drum 12 .
  • a door 17 At the machine body 10 , adjacent to the inlet 17 b , is mounted a door 17 to open and close the inlet 17 b .
  • a cylindrical diaphragm 11 d Between the inlet 10 b of the machine body 10 and the inlet 11 b of the water tub 11 is mounted a cylindrical diaphragm 11 d to prevent the leakage of wash water.
  • the water tub 11 Above the water tub 11 are mounted a detergent supply unit 18 to supply detergent and a water supply unit 20 to supply water (wash water or rinse water). Below the water tub 11 is mounted a drainage unit 19 to drain water in the water tub 11 to the outside.
  • the drainage unit 19 includes a drainage pipe 19 a , a drainage valve 19 b , and a drainage pump 19 c.
  • the detergent supply unit 18 has several partitioned spaces.
  • the detergent supply unit 18 is mounted at the front side of the machine body 10 such that a user easily puts detergent and rinse in the respective partitioned spaces.
  • the detergent supply unit 18 includes a preliminary washing detergent box to store detergent used for preliminary washing, a main washing detergent box to store detergent used for main washing, and a rinse box to store rinse used for rinsing.
  • the details of the detergent supply unit 18 are disclosed in Korean Patent Application No. 2003-0011317, which has been filed in the name of the applicant of the present application. Of course, other well-known technologies may be applied to the detergent supply unit 18 .
  • the water supply unit 20 includes a first water supply pipe 22 connected between an external water supply pipe 21 , through which water (wash water or rinse water) is supplied into the water tub 11 , and the detergent supply unit 18 , a second water supply pipe 23 connected between the detergent supply unit 18 and the water tub 11 , and a water supply valve 24 mounted on the first water supply pipe 22 to control the supply of water. Consequently, water is supplied into the water tub 11 via the detergent supply unit 18 such that detergent is supplied into the water tub 11 together with the water.
  • FIG. 2 is a control block diagram of the washing machine according to an exemplary embodiment.
  • the washing machine further includes a signal input unit 50 , a water level detection unit 52 , a temperature detection unit 54 , a control unit 56 , and a drive unit 58 .
  • the signal input unit 50 inputs operation information, such as a washing course, a washing temperature, spin-drying RPM, and the addition of rinsing, which are selected by a user, to the control unit 56 .
  • operation information such as a washing course, a washing temperature, spin-drying RPM, and the addition of rinsing, which are selected by a user.
  • the water level detection unit 52 detects the water level of water supplied into the water tub 11
  • the temperature detection unit 54 detects the temperature of water supplied into the water tub 11 .
  • the control unit 56 is a computing device (e.g., a microcomputer) to control the washing machine based on the operation information inputted from the signal input unit 50 .
  • the control unit 56 stores the amount of rinse water, spin-drying RPM, and rinsing time set according to the amount of load (the weight of laundry) in the selected washing course.
  • the control unit 56 controls the intermediate spin-drying RPM before the final rinsing and rinsing time during the final rinsing to completely remove residual detergent from the laundry.
  • control unit 56 increases the intermediate spin-drying RPM before the final rinsing, such that the spin-drying RPM before the final rinsing is higher by a specific percentage (10 to 20%) than a predetermined RPM (approximately 800 RPM), to strongly squeeze out residual detergent, contained in laundry, from the laundry. Also, the control unit 56 adds soaked rinsing time (approximately 5 to 10 minutes) to the predetermined rinsing time, during the final rinsing, to completely dissolve residual detergent contained in laundry.
  • the rinsing operation is performed to separate detergent, contained in the laundry, from the laundry, without the increase of power consumption, through the on/off control of rinsing/soaking (e.g., rinsing for 30 seconds/soaking for 1 minute), whereby the rinsing is more effectively accomplished.
  • the drive unit 58 drives the motor 15 , the washing heater 16 , the drainage valve 19 b , the drainage pump 19 c , and the water supply valve 24 according to a drive control signal of the control unit 56 .
  • FIGS. 3A and 3B are flow charts illustrating a rinsing control method of the washing machine according to an exemplary embodiment.
  • Exemplary embodiments relate to a rinsing operation to improve the rinsing efficiency during the rinsing of laundry.
  • a washing operation performed through the supply of water and detergent is identical to that of a general washing machine, and therefore, a detailed description thereof will not be given.
  • the operation information selected by the user is inputted to the control unit 56 through the signal input unit 54 .
  • control unit 56 determines whether the operation is on so as to perform a washing operation based on the operation information inputted from the signal input unit 54 (S 100 ).
  • control unit 56 detects the amount of load (the weight of laundry) put in the rotary drum 12 (S 102 ), and sets the amount of wash water and rinse water to be supplied, motor operation rate (motor on-off time), and rinsing time based on the detected amount of load (S 104 ).
  • control unit 56 supplies water (specifically, wash water) having an amount sufficient to wash the laundry and detergent into the water tub 11 so as to supply the amount of water set based on the amount of load, and performs a washing operation to wash the laundry by the frictional force between the laundry and the rotary drum 12 and the dropping force of the laundry while detergent water (water+detergent) uniformly permeates into the laundry through the rotation of the rotary drum 12 .
  • water specifically, wash water
  • control unit 56 controls the water supply unit 20 to supply the amount of rinse water set for each washing course based on the amount of load.
  • the water supply valve 24 is opened, and water (rinse water) flows through the water supply pipes 21 and 22 and the second water supply pipe 23 , whereby the rinse water is supplied into the water tub 11 (S 106 ).
  • the water level detection unit 52 detects the water level of the rinse water supplied into the water tub 11 .
  • the control unit 56 controls the water supply valve 24 to be turned off such that the water supply is interrupted.
  • the control unit 56 operates the motor 15 at a predetermined motor RPM (less than a washing RPM) and operation rate to rotate the rotary drum 12 such that the laundry is rinsed by the rinse water supplied into the water tub 11 .
  • the control unit 56 performs a rinsing operation to rinse the laundry by the frictional force between the laundry and the rotary drum 12 and the dropping force of the laundry (S 108 ).
  • the control unit 56 determines whether a predetermined rinsing time (basic rinsing time; approximately 1 minute to 1 minute and 30 seconds) has elapsed (S 110 ). When the rinsing time has not elapsed, the procedure returns to S 108 to continuously perform the rinsing operation.
  • a predetermined rinsing time basic rinsing time; approximately 1 minute to 1 minute and 30 seconds
  • the control unit 56 controls the drainage valve 19 b and the drainage pump 19 c to drain the rinse water in the water tub 11 to the outside through the drainage pipe 19 a (S 112 ), and determines whether the spin-drying process is spin-drying before the final rinsing prior to the performance of spin-drying after the rinsing (S 114 ).
  • the number of rinsing processes is set to be approximately 2 to 5, which is set depending upon the amount of load or the operation information, such as the addition of rinsing, selected by the user.
  • control unit 56 When it is determined at S 114 that the spin-drying process is not the spin-drying before the final rinsing, the control unit 56 performs spin-drying at a predetermined intermediate spin-drying RPM (approximately 800 RPM) (S 116 ), and the procedure returns to S 108 to perform a subsequent rinsing process.
  • a predetermined intermediate spin-drying RPM approximately 800 RPM
  • the control unit 56 operates the motor 15 at the number of rotations greater by a specific percentage (approximately 10 to 20%) than the predetermined intermediate spin-drying RPM (approximately 800 RPM) (for example, the increased number of rotations is 880 to 960 RPM when the spin-drying RPM is 800 RPM).
  • the rotary drum 12 is rotated at the RPM higher by approximately 10 to 20% than the original spin-drying RPM, such that the spin-drying is rapidly performed, to strongly squeeze out residual detergent, contained in laundry, from the laundry (S 118 ).
  • the control unit 56 operates the water supply unit 20 such that the final rinsing is performed.
  • the water supply valve 24 is opened, and water (rinse water) for the final rinsing flows through the water supply pipes 21 and 22 and the second water supply pipe 23 , whereby the rinse water is supplied into the water tub 11 (S 120 ).
  • control unit 56 After the supply of water (rinse water) into the water tub 11 , the control unit 56 operates the motor 15 at the predetermined motor RPM and operation rate to perform the final rinsing in the same manner as the previous rinsing operation (S 122 ).
  • the control unit 56 determines whether the predetermined rinsing time (basic rinsing time; approximately 1 minute to 1 minute and 30 seconds) has elapsed (S 124 ). When the rinsing time has not elapsed, the procedure returns to S 122 to continuously perform the final rinsing.
  • the predetermined rinsing time basic rinsing time; approximately 1 minute to 1 minute and 30 seconds
  • the control unit 56 When it is determined at S 124 that the rinsing time has elapsed, the control unit 56 successively performs a soaked rinsing process including rinsing/soaking (e.g., rinsing for 30 seconds/soaking for 1 minute), without the drainage of the rinse water, in addition to the predetermined rinsing time, to completely dissolve the residual detergent, not separated from the laundry (S 126 ).
  • rinsing/soaking e.g., rinsing for 30 seconds/soaking for 1 minute
  • control unit 56 counts the soaked rinsing time to determine whether a predetermined soaked rinsing time (time variable depending upon the amount of laundry; approximately 5 to 10 minutes) has elapsed (S 128 ). When the soaked rinsing time has not elapsed, the procedure returns to S 126 to continuously perform the soaked rinsing.
  • the control unit 56 When it is determined at S 128 that the soaked rinsing time has elapsed, the control unit 56 operates the drainage valve 19 b and the drainage pump 19 c to drain the final rinse water in the water tub 11 to the outside through the drainage pipe 19 a (S 130 ). After that, the control unit 56 performs spin-drying at a predetermined final spin-drying RPM (approximately 1100 to 1200 RPM) (S 132 ).
  • a predetermined final spin-drying RPM approximately 1100 to 1200 RPM
  • the washing machine according to exemplary embodiments and the rinsing control method of the same have the effect of increasing spin-drying RPM before the final rinsing, such that the spin-drying RPM before the final rinsing is higher by a specific percentage than a predetermined RPM, to strongly squeeze out residual detergent, contained in laundry, from the laundry, thereby accomplishing effective rinsing.
  • the washing machine according to exemplary embodiments and the rinsing control method of the same have the effect of adding soaked rinsing time, during the final rinsing, to completely dissolve residual detergent contained in laundry, thereby further improving the rinsing efficiency.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
US12/000,328 2007-03-06 2007-12-11 Washing machine and rinsing control method of the same Abandoned US20080216251A1 (en)

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KR1020070022212A KR101375710B1 (ko) 2007-03-06 2007-03-06 세탁기 및 그 헹굼 제어방법
KR10-2007-0022212 2007-03-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120023679A1 (en) * 2010-07-30 2012-02-02 Stephen Edward Hettinger Method and apparatus for reducing water usage during a washing cycle
US20120312055A1 (en) * 2009-12-16 2012-12-13 Electrolux Home Products Corporation N.V. Washing Machine
US20130200834A1 (en) * 2012-02-07 2013-08-08 Youngsuk Kim Controlling method of laundry device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110359219B (zh) * 2018-04-10 2023-08-29 青岛海尔洗衣机有限公司 洗衣机控制方法及洗衣机

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Publication number Priority date Publication date Assignee Title
US6868701B2 (en) * 2002-06-14 2005-03-22 Yong Mi Lee Washing machine equipped with means for generating microbubbles of air

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Publication number Priority date Publication date Assignee Title
KR100689338B1 (ko) * 2001-01-16 2007-03-08 주식회사 엘지이아이 세탁기의 헹굼 방법
KR100492319B1 (ko) 2003-02-24 2005-06-02 삼성전자주식회사 세탁기의 급수 제어 방법

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6868701B2 (en) * 2002-06-14 2005-03-22 Yong Mi Lee Washing machine equipped with means for generating microbubbles of air

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120312055A1 (en) * 2009-12-16 2012-12-13 Electrolux Home Products Corporation N.V. Washing Machine
US9534338B2 (en) * 2009-12-16 2017-01-03 Electrolux Home Products Corporation N.V. Washing machine
US20120023679A1 (en) * 2010-07-30 2012-02-02 Stephen Edward Hettinger Method and apparatus for reducing water usage during a washing cycle
US20130200834A1 (en) * 2012-02-07 2013-08-08 Youngsuk Kim Controlling method of laundry device
WO2013118999A1 (en) * 2012-02-07 2013-08-15 Lg Electronics Inc. Controlling method of laundry device
US9045850B2 (en) * 2012-02-07 2015-06-02 Lg Electronics Inc. Controlling method of laundry device

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KR101375710B1 (ko) 2014-03-19
KR20080081756A (ko) 2008-09-10
EP1967635A2 (en) 2008-09-10

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

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KAHM, BYOUNG MOCK;JO, YOUNG CHUL;REEL/FRAME:020281/0061

Effective date: 20071130

STCB Information on status: application discontinuation

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