EP1502981A2 - Waschmaschine - Google Patents

Waschmaschine Download PDF

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Publication number
EP1502981A2
EP1502981A2 EP04252394A EP04252394A EP1502981A2 EP 1502981 A2 EP1502981 A2 EP 1502981A2 EP 04252394 A EP04252394 A EP 04252394A EP 04252394 A EP04252394 A EP 04252394A EP 1502981 A2 EP1502981 A2 EP 1502981A2
Authority
EP
European Patent Office
Prior art keywords
water
rotary tub
washing machine
drum washing
tub
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Withdrawn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
EP04252394A
Other languages
English (en)
French (fr)
Other versions
EP1502981A3 (de
Inventor
Hyun Sook Kim
Ki Hun Joo
Jung Ran Jung
Ki Su Lee
Hyun Mu Lee
Uk Jin Jang
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 EP1502981A2 publication Critical patent/EP1502981A2/de
Publication of EP1502981A3 publication Critical patent/EP1502981A3/de
Withdrawn legal-status Critical Current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
    • 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, in general, to a drum washing machine comprising a rotary tub and a motor connected to a power supply to rotate the rotary tub, and a method of controlling the drum washing machine.
  • a set amount of water is fed into a fixed water tub to rinse laundry.
  • the water gradually fills the water tub, and then flows into a rotary tub.
  • Laundry is contained in the rotary tub and is soaked with the water.
  • a rinsing process is executed while the rotary tub is alternately rotated in opposite directions. Therefore, the laundry in contact with the inner wall of the rotary tub is initially soaked with the water and then remaining laundry is soaked as the water gradually disperses.
  • the conventional drum washing machine is problematic in that it takes a long time for all of the laundry to be soaked with water.
  • the laundry that is in contact with the inner wall of the rotary tub becomes sufficiently soaked with water.
  • the laundry at the centre of the drum can remain relatively insufficiently soaked with the water, meaning that the entire laundry load is not uniformly soaked with water. Consequently, if rinsing is performed in this state, the rinsing performance is deteriorated.
  • the present invention seeks to provide a drum washing machine that substantially alleviates or overcomes the problems mentioned above.
  • the method of controlling a drum washing machine of the present invention is characterised by the step of spraying water into said rotary tub after supply of power to the motor is cut but before the rotary tub has stopped rotating.
  • a preferred embodiment includes the step of stopping the spray of water when a predetermined period of time has elapsed after supply of power to the motor is cut and before the rotary tub comes to rest.
  • the washing machine preferably includes a drain pump to drain water from the rotary tub and the method preferably includes the step of activating the drain pump, determining when a predetermined time period for the tub to come to rest has elapsed and, deactivating the drain pump.
  • water is sprayed into the rotatable tub whilst power is being supplied to the motor.
  • the method preferably includes the step of initiating the spray of water when the rotational speed of the tub reaches a pre-set value and advantageously includes the step of terminating spray of water when a predetermined period of time has elapsed.
  • the rotary tub is mounted in a water tub and the method preferably includes the step of feeding the water into the water tub at the same time as spraying it into the rotary tub.
  • the time period of the spraying of the water may be shorter than a time required for termination of the inertial rotation of the rotary tub.
  • the spin-drying of the laundry may be an intermittent spin-drying operation in which the laundry is intermittently spin-dried after the washing and/or rinsing operation.
  • the drum washing machine of the present invention is characterised by a water supply unit operable to spray water into the rotary tub after supply of power to the motor is cut but before the rotary tub has stopped rotating.
  • the rotary tub is mounted in a water tub and the water supply unit comprises a main feed pipe for supplying water into the water tub and, an auxiliary feed pipe through which water is sprayed into the rotary tub.
  • a control unit is preferably provided for controlling the supply of water through the main feed pipe and auxiliary feed pipe.
  • the present invention also provides a drum washing machine including a rotary tub, a spray feed unit to spray and feed water into the rotary tub, and a control unit to control the spray feed unit, wherein the control unit controls the spray feed unit to spray and feed water into the rotary tub during a time period wherein the rotary tub is inertially rotated at a time of spin-drying.
  • the control unit may control the spray feed unit at a time of intermittent spin-drying in which laundry is intermittently spin-dried after a washing and/or a rinsing operation.
  • the control unit may also control the spray feed unit to spray and feed the water during a time period wherein a rotation speed of the rotary tub rises.
  • the spray feed unit may include a main water feed pipe to feed water to the drum washing machine, an auxiliary water feed pipe having a first end connected to the main water feed pipe, and a second end disposed at an inlet of the rotary tub, an auxiliary water feed valve mounted at the auxiliary water feed pipe, and a spray nozzle mounted at the second end of the auxiliary water feed pipe.
  • the control unit may control the spray feed unit so that a time required for the spraying and feeding of the water is shorter than a time required for termination of the inertial rotation of the rotary tub.
  • the drum washing machine may further include a pump to drain water in the rotary tub to outside of the rotary tub.
  • main and auxiliary water feed pipes 12 and 13 are mounted to allow water flowing from an external water supply pipe to selectively flow into a water tub 10 or a rotary tub 11.
  • the main water feed pipe 12 is connected to the water tub 10.
  • the auxiliary water feed pipe 13, which is branched from the main water feed pipe 12, has one end connected to the main water feed pipe 12, and a remaining end disposed at an inlet of the rotary tub 11.
  • Main and auxiliary water feed valves 14 and 15 are mounted in the main and auxiliary water feed pipes 12 and 13, respectively, so as to allow water to selectively flow into the water tub 10 or the rotary tub 11.
  • a detergent container 16 is disposed in the main water feed pipe 12, between the main water feed valve 14 and the water tub 10, to allow detergent to be supplied together with the water into the water tub 10.
  • a spray nozzle 13a is mounted at an end of the auxiliary water feed pipe 13 to spray water into the rotary tub 11. Therefore, the drum washing machine is constructed so that water and detergent are fed together into the water tub 10 through the main water feed pipe 12, and only water is fed by spraying into the rotary tub 11 through the auxiliary water feed pipe 13, the auxiliary water feed valve 15, and the spray nozzle 13a forming a spray feed unit.
  • Water and detergent flows through the main water feed pipe 12 and collects in a lower portion of the water tub 10.
  • a drain pipe 17 is provided at a bottom of the water tub 10 and is connected to a drain pump 18 and a drain valve 19 to pump water and detergent out of the lower portion of the water tub 10.
  • a reversible motor 20 is coupled to the rotary tub 11 to rotate the rotary tub 11 in both forward and reverse directions.
  • the main water feed valve 14, the auxiliary water feed valve 15, the drain pump 18, the drain valve 19, and the motor 20 are all electrically connected to a control unit (not shown) that controls operation of the drum washing machine.
  • FIG 2 shows a control flowchart of a method of controlling the drum washing machine of Figure 1.
  • detergent together with a set amount of water is fed into the water tub 10 in operation 100.
  • the motor 20 is driven to rotate the rotary tub 11 in opposite directions, thus washing laundry in operation 101.
  • waste water contained in the rotary tub 11 is drained in operation 102.
  • the motor 20 rotates the rotary tub 11 at high speed to remove excess water from the laundry, indicated as operation 103 in Figure 2.
  • the rotational speed of the motor 20 in this operation is less than that of the final spin-drying operation.
  • the auxiliary water feed valve 15 is opened to directly spray clean water into the rotary tub 11 once the intermittent spin-drying operation is terminated by cutting the power supply to the motor but while the rotary tub 11 is still rotating due to rotational inertia. Therefore, as clean water is sprayed directly onto the laundry, the entire laundry is rinsed and uniformly soaked with the clean water within a short space of time.
  • clean water is fed again into the water tub 10 through the main water feed pipe 12 in operation 104.
  • the motor 20 is then alternately rotated in forward and reverse directions at a preset rotation speed to rotate the rotary tub 11 in opposite directions, thereby performing a rinsing operation 105.
  • waste water contained in the rotary tub 11 is drained in operation 106.
  • the motor 20 is operated to rotate the rotary tub 11 at high speed, thereby performing intermittent spin-drying operation 107.
  • water is sprayed into the rotary tub 11 in a similar manner to the intermittent spin-drying operation 103 that is performed after the washing operation 101.
  • the intermittent spin-drying operation 107 performed after the rinsing operation water is sprayed whilst the rotational speed of the rotary tub 11 is increasing by being driven by the motor 20, as well as whilst water is being sprayed during the interval when the rotary tub 11 is rotating by rotational inertia alone.
  • a final spin-drying operation 108 may be immediately performed.
  • the final spin-drying operation may be performed after the water feeding operation 104, the rinsing operation 105, the draining operation 106, and the intermittent spin-drying operation 107 have all been performed a predetermined number of times. After the final spin-drying operation has been completed, the above control method terminates.
  • Figure 3 is a control flowchart showing the intermittent spin-drying operation 103 performed after the washing operation 101 in the method of Figure 2.
  • the motor 20 and the drain pump 18 are turned on in operation 110, and the rotational speed of the rotary tub 11 gradually rises, until it is rotating at a sufficiently high speed, for the waste water to be forced out of the laundry.
  • the waste water is pumped out of the washing machine by the drain pump 18.
  • operation 111 it is determined whether a preset intermittent spin-drying time has elapsed. If the preset intermittent spin-drying time has not elapsed, the control unit continues to perform operation 110. However, if the preset intermittent spin-drying time has elapsed, a signal is sent to the control unit which turns off the motor 20 to stop the rotary tub 11, in operation 112. After the moment the motor 20 is turned off, the rotary tub 11 continues to rotate for a period of time due to rotational inertia until it is brought to a stop by friction.
  • the auxiliary water feed valve 15 is turned on in operation 113. Accordingly, water flows from the water supply pipe through the auxiliary water feed pipe 13 and is directly sprayed from the spray nozzle 13a onto the laundry contained in the rotary tub 11. Therefore, the sprayed water rinses the waste water from the laundry as it passes therethrough and is then drained. In operation 114, it is then determined whether the auxiliary water feed valve 15 has been turned on for a predetermined time period, for example, approximately 20 seconds.
  • the auxiliary water feed valve 15 If the auxiliary water feed valve 15 has been turned on for longer than the predetermined period, the auxiliary water feed valve 15 is turned off in operation 115 to stop the above spray rinsing operation.
  • Figure 4 is a graph showing a start and a termination of the spray rinsing operation of Figure 3.
  • the rotary tub 11 is rotated at a high speed, and, the water spraying operation is performed for a certain period just before the intermittent spin-drying operation terminates after the motor 20 is turned off.
  • the water spraying operation is not performed. This is because if cool water is sprayed on the laundry while it contains hot water from heated washing, any soil in the laundry would not be sufficiently removed.
  • Figure 5 is a control flowchart showing the intermittent spin-drying operation performed after the rinsing operation in the method of Figure 2
  • Figure 6 is a graph showing a start and a termination of a spray rinsing operation of Figure 5.
  • These Figures show a second control operation of spraying water into the rotary tub 11 while it is rotating under inertia after the motor 10 is turned off, similar to that of Figure 3.
  • the water spraying operation is also performed during a time period when the rotary tub 11 is speeding up under power from the motor 20 (100 to 400 rpm). That is, when the speed of the motor 20 reaches a preset value, the auxiliary water feed valve 15 is opened to spray water thereby improving the rinsing performance.
  • the present invention provides a drum washing machine, and a method of controlling the drum washing machine, which directly sprays water into a rotary tub just before termination of an intermittent spin-drying operation which is performed after a washing or rinsing operation, thus enabling laundry to be uniformly soaked with the water within a short period of time and improving rinsing performance.
EP04252394A 2003-07-31 2004-04-23 Waschmaschine Withdrawn EP1502981A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2003053156 2003-07-31
KR1020030053156A KR20050014503A (ko) 2003-07-31 2003-07-31 드럼 세탁기 및 그 제어방법

Publications (2)

Publication Number Publication Date
EP1502981A2 true EP1502981A2 (de) 2005-02-02
EP1502981A3 EP1502981A3 (de) 2006-10-04

Family

ID=33536467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04252394A Withdrawn EP1502981A3 (de) 2003-07-31 2004-04-23 Waschmaschine

Country Status (4)

Country Link
US (1) US20050022318A1 (de)
EP (1) EP1502981A3 (de)
KR (1) KR20050014503A (de)
CN (1) CN100343438C (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100071195A (ko) * 2008-12-19 2010-06-29 삼성전자주식회사 세탁기 및 그 제어 방법
KR101888954B1 (ko) * 2011-08-02 2018-08-16 엘지전자 주식회사 세탁기의 탈수제어방법
CN107780125B (zh) * 2016-08-26 2020-11-03 青岛海尔洗衣机有限公司 一种洗衣机控制方法及洗衣机
CN107794703B (zh) * 2016-08-31 2021-09-07 青岛胶南海尔洗衣机有限公司 一种采用波轮洗衣机洗涤冲锋衣的方法及波轮洗衣机
CN107190464B (zh) * 2017-05-27 2021-09-17 青岛海尔洗衣机有限公司 一种洗衣机的控制方法及洗衣机
CN111297301B (zh) * 2019-12-19 2021-11-09 海信（山东）冰箱有限公司 洗鞋机及其控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03139396A (ja) * 1989-10-25 1991-06-13 Matsushita Electric Ind Co Ltd 全自動洗濯機の運転方法
DE4009046A1 (de) * 1990-03-21 1991-09-26 Licentia Gmbh Verfahren zum benetzen von waschgut in einer programmgesteuerten trommelwaschmaschine
DE4210577A1 (de) * 1992-03-31 1993-10-07 Licentia Gmbh Programmgesteuerte Waschmaschine
EP0644290A1 (de) * 1993-09-17 1995-03-22 AEG Hausgeräte GmbH Verfahren zum Spülen und Schleudern von Wäsche in einer programmgesteuerten Waschmaschine
US20030089139A1 (en) * 2000-02-11 2003-05-15 Orszulik Stefan Tadeusz Method of operating a domestic appliance

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100206073B1 (en) * 1996-12-18 1999-07-01 Lg Electronics Inc The transmission laundry type washing machine
US6609264B2 (en) * 2001-09-21 2003-08-26 Maytag Corporation Pump cycling control system for a washing machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03139396A (ja) * 1989-10-25 1991-06-13 Matsushita Electric Ind Co Ltd 全自動洗濯機の運転方法
DE4009046A1 (de) * 1990-03-21 1991-09-26 Licentia Gmbh Verfahren zum benetzen von waschgut in einer programmgesteuerten trommelwaschmaschine
DE4210577A1 (de) * 1992-03-31 1993-10-07 Licentia Gmbh Programmgesteuerte Waschmaschine
EP0644290A1 (de) * 1993-09-17 1995-03-22 AEG Hausgeräte GmbH Verfahren zum Spülen und Schleudern von Wäsche in einer programmgesteuerten Waschmaschine
US20030089139A1 (en) * 2000-02-11 2003-05-15 Orszulik Stefan Tadeusz Method of operating a domestic appliance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 353 (C-0865), 6 September 1991 (1991-09-06) & JP 03 139396 A (MATSUSHITA ELECTRIC IND CO LTD), 13 June 1991 (1991-06-13) *

Also Published As

Publication number Publication date
CN1580356A (zh) 2005-02-16
EP1502981A3 (de) 2006-10-04
KR20050014503A (ko) 2005-02-07
US20050022318A1 (en) 2005-02-03
CN100343438C (zh) 2007-10-17

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