US20050223506A1 - Method of controlling opening and closing of a door in drum-type washing machine - Google Patents

Method of controlling opening and closing of a door in drum-type washing machine Download PDF

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Publication number
US20050223506A1
US20050223506A1 US11/088,718 US8871805A US2005223506A1 US 20050223506 A1 US20050223506 A1 US 20050223506A1 US 8871805 A US8871805 A US 8871805A US 2005223506 A1 US2005223506 A1 US 2005223506A1
Authority
US
United States
Prior art keywords
door
drum
lock
washing machine
type washing
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
US11/088,718
Other languages
English (en)
Inventor
Ig Kwen
Sun 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
Priority claimed from KR1020040020449A external-priority patent/KR20050095211A/ko
Priority claimed from KR1020040020448A external-priority patent/KR101054407B1/ko
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: KIM, SUN WOO, KWEN, IG GUEN
Publication of US20050223506A1 publication Critical patent/US20050223506A1/en
Abandoned 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
    • 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 
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/04—Manufacturing
    • 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
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • 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
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/44—Opening, closing or locking of doors

Definitions

  • the present invention relates to a method of controlling opening and closing of a door in a drum-type washing machine, to put it concretely, that opening and closing of the door in the drum-type washing machine is controlled depending on a water level of a tub when the drum-type washing machine comes to a stop in operation.
  • a washing machine is to decontaminate dirt on clothes or bedding through washing, rinsing and dehydrating.
  • a drum-type washing machine has a door in front to put laundry in it.
  • a cabinet in the drum-type washing machine has a door-lock-switch which prevents the door from opening while the drum-type washing machine is on.
  • the door-lock-switch is affected by a controller of the drum-type washing machine.
  • the controller makes the door unopened.
  • the controller makes it possible to open the door.
  • the drum-type washing machine stops by a pause, a mistake by a user, a switch-off, the drum-type washing machine up to the present releases the door-lock-switch and the door can be opened even though water is contained in a tub.
  • the conventional drum-type washing machine causes inconvenience that water of the tub flows out of the drum-type washing machine as the user opens the door.
  • the present invention is designed to cope with the above-mentioned problem, its main purpose places in providing a method of controlling opening and closing a door in a drum-type washing machine, which prevents water from running out of the machine which unexpectedly becomes stopped while its operation. It is feasible that a water level of a tub is considered before deciding whether to allow the door to open or not.
  • the method of controlling opening and closing of the door in the drum-type washing machine comprises the steps of: operating the drum-type washing machine; locking the door not to open; sensing the water level of the tub when the drum-type washing machine stops operating; and releasing a door-lock so that the door becomes ready to open if the water level of the tub is sensed lower than predetermined height.
  • the door-lock is maintained and it is returned to the step of sensing the water level of the tub.
  • the method of controlling opening and closing of the door in the drum-type washing machine further comprises that a child-lock is turned on before the drum-type washing machine stops.
  • the child-lock is on by a user or automatically after the drum-type washing machine is operating.
  • the method of controlling opening and closing of the door in the drum-type washing machine further comprises that the door-lock is released following by turning off the child-lock if the drum-type washing machine stops operating and the water level in the drum-type washing machine is lower than predetermined height.
  • the child-lock becomes off by the user or automatically.
  • the method of controlling opening and closing of the door in the drum-type washing machine prevents water from flowing out of the door when the drum-type washing machine which has been operating stops or pauses. The reason is that the door holds its condition as can-be-opened or should-be-locked, reading the water level of the tub.
  • FIG. 1 is an illustration of a drum-type washing machine adapted for the present invention.
  • FIG. 2 is a flow chart of a method of controlling opening and closing of a door in the drum-type washing machine in accordance with the 1st embodiment of the present invention.
  • FIG. 3 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 2nd embodiment of the present invention.
  • FIG. 4 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 3rd embodiment of the present invention.
  • FIG. 5 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 4th embodiment of the present invention.
  • FIG. 6 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 5th embodiment of the present invention.
  • FIG. 1 is an illustration of a drum-type washing machine adapted for the present invention.
  • the drum-type washing machine includes: a door 1 ; a cabinet assembly 2 that shapes a body of the drum-type washing machine; a tub (not shown) in the cabinet assembly 2 that contains water; a drum 3 that rotates inside of the tub; and a motor (not shown) connected to the drum 3 that makes the drum 3 rotate.
  • a detergent box 4 with cleaning or softening materials and a control panel unit 5 with a controller of the drum-type washing machine are installed in the cabinet assembly 2 .
  • a cabinet cover 6 which is the front of the cabinet assembly 2 has a hole 7 for holding the door 1 .
  • One side of the door 1 is connected to the cabinet cover 6 with a hinge and the other side of the door 1 hangs a hook 8 .
  • the hook 8 fixes the door 1 by meeting a latch assembly 9 in the cabinet cover 6 .
  • the latch assembly 9 is regulated by the controller in the control panel unit 5 .
  • the controller impresses or interrupts an electric current to a door-lock-switch (not shown) and commands its function.
  • the latch assembly 9 accordingly runs and controls opening and closing of the door.
  • a child-lock-button 10 is on the control panel unit 5 . As a user pushes the child-lock-button 10 , a signal is delivered to the controller. After receiving the signal, the controller orders the latch assembly 9 to work and the door 1 is laid in a locking condition.
  • a child-lock is required to keep a child from entering the drum 3 after opening the door 1 .
  • the control panel unit 5 has a door-opening-lamp 11 and a door-closing-lamp 12 , which inform the user whether the door 1 can be opened or not.
  • a method of controlling opening and closing of the door in the drum-type washing machine comprises the steps of: operating the drum-type washing machine at step S 10 with manipulation by the user after laundry is loaded in the drum 3 ; locking the door 1 at step S 20 by impressing the electric current to the door-lock-switch before or after or simultaneously with step S 10 and by working the latch assembly 9 ; sensing whether the drum-type washing machine stops in operation at step S 30 ; sensing the water level of the tub at step S 40 when the drum-type washing machine stops operating; and releasing the door-lock at step S 50 so that the door 1 becomes ready to open by the latch assembly 9 if the water level of the tub is sensed lower than predetermined height.
  • the step S 20 of locking the door impresses the electric current to the door-lock-switch and converts the door into locking. In addition, it turns on the door-closing-lamp 12 .
  • the step S 30 of sensing the stop implies both the cases that the user puts a stop to the operation of the drum-type washing machine and the drum-type washing machine unexpectedly stops without manipulation by the user.
  • the former is, for example, the user turns off a power to put more laundry into the drum 3 before water is drained.
  • the latter is that the drum-type washing machine becomes stopped due to a cut-off of the power, a mistake by the user or the incapacity of motor.
  • the step of S 40 sensing the water level reads the water level contained in the tub and decides whether the door-lock is released.
  • the step of S 50 releasing the door-lock interrupts the electric current to the door-lock-switch and makes the latch assembly 9 remove the door-lock when the water level of the tub is lower than predetermined height.
  • the controller turns on the door-opening-lamp 11 and turns off the door-closing-lamp 12 at a time, the user can notice the door 1 is available to open at step S 50 .
  • the drum-type washing machine is turned out to be in normal operation at step S 30 , it is returned to step S 10 and continues operating.
  • step S 40 If the water level of the tub is higher than predetermined height at step S 40 , the door is locked as it used to be. It is returned to step S 40 and waits till the water level of the tub gets lowered.
  • step S 50 is activated and the door-lock is released.
  • FIG. 3 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 2nd embodiment of the present invention.
  • the 2nd embodiment is developed from the 1st one by adding a function of the child-lock.
  • the method of controlling opening and closing of the door in the drum-type washing machine comprises the steps of: operating the drum-type washing machine at step S 110 after the child-lock-button 10 is on and the child-lock is set up at step S 101 ; locking the door at step S 120 ; sensing whether the drum-type washing machine stops in operation at step S 130 ; sensing the water level of the tub at step S 140 when the drum-type washing machine stops operating; checking the child-lock to be released by manipulation of the child-lock-button at step S 150 when the water level of the tub is lower than predetermined height; releasing the door-lock to be opened at step S 160 when the child-lock-button is released; and turning off the door-closing-lamp and turning on the door-opening-lamp at step S 161 after the door-lock comes to released.
  • a double-lock-system is executed at step S 120 .
  • the door maintains the locking condition in any cases if the child-lock is on, regardless of the door-lock-switch-off.
  • the latch assembly functions the child-lock by the controller in the embodiment, though the latch assembly and a separate locking device can be installed in the drum-type washing machine in order to implement the child-lock.
  • step S 150 Releasing the child-lock by the user is confirmed at step S 150 . Only if the child-lock-releasing-signal is received through the child-lock-button, the door becomes ready to open at step S 160 . If not, it waits till the signal is received.
  • step S 140 If the water level of the tub is higher than predetermined height at step S 140 , the door 1 is locked as it used to be. It is returned to step S 140 and waits till the water level of the tub is lowered at step S 142 .
  • FIG. 4 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 3rd embodiment of the present invention.
  • From steps S 101 to S 140 in the 3rd embodiment is the same as the process in the 2nd one.
  • the child-lock is automatically turned off at step S 200 and allows the door to open by releasing the door-lock at step S 201 . It is possible even though there is no child-lock-releasing-signal.
  • FIG. 5 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 4th embodiment of the present invention.
  • the 4th embodiment includes, contrary to the 2nd one, the child-lock is off before the drum-type washing machine is in operation at step S 300 and the child-lock is on after its operation at step S 301 .
  • the method of controlling opening and closing the door in the drum-type washing machine comprises the steps of: operating the drum-type washing machine at step S 110 while the child-lock-button is off at step S 300 ; locking the door and turning on the door-closing-lamp at step S 120 ; automatically turning on the child-lock at step S 301 ; sensing whether the drum-type washing machine stops in operation at step S 130 ; sensing the water level of the tub at step S 140 when the drum-type washing machine stops operating; checking the child-lock to be released by manipulation of the child-lock-button at step S 150 when the water level of the tub is lower than predetermined height; releasing the door-lock to be opened at step 160 when the child-lock is released; and turning off the door-closing-lamp and turning on the door-opening-lamp at step S 161 after the door-lock comes to released.
  • FIG. 6 is the flow chart of the method of controlling opening and closing of the door in the drum-type washing machine in accordance with the 5th embodiment of the present invention.
  • the 5th embodiment is the same as the 4 th one except that the child-lock is automatically turned off without the child-lock-releasing-signal at step S 302 when the water level of the tub is under predetermined height.
  • the method of controlling opening and closing of the door in the drum-type washing machine has the practical strength:
  • the water level of the tub is sensed. Then, the door is opened only if the water level of the tub is lower than predetermined height. It can be prevented that water flows out caused by accidentally opening the door.
  • the door-lock is released after the child-lock is released, even though the water level of the tub is under predetermined height. It can be prevented that the child opens the door when the drum-type washing machine is not operating.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Software Systems (AREA)
  • Marketing (AREA)
  • Mathematical Physics (AREA)
  • Manufacturing & Machinery (AREA)
  • Databases & Information Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Economics (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Resources & Organizations (AREA)
  • General Engineering & Computer Science (AREA)
  • Primary Health Care (AREA)
  • Strategic Management (AREA)
  • Tourism & Hospitality (AREA)
  • General Business, Economics & Management (AREA)
  • Data Mining & Analysis (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
US11/088,718 2004-03-25 2005-03-25 Method of controlling opening and closing of a door in drum-type washing machine Abandoned US20050223506A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020040020449A KR20050095211A (ko) 2004-03-25 2004-03-25 드럼세탁기의 도어스위치 제어 방법
KR2004-20448 2004-03-25
KR1020040020448A KR101054407B1 (ko) 2004-03-25 2004-03-25 드럼세탁기의 도어스위치 제어 방법
KR2004-20449 2004-03-25

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US20050223506A1 true US20050223506A1 (en) 2005-10-13

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US11/088,718 Abandoned US20050223506A1 (en) 2004-03-25 2005-03-25 Method of controlling opening and closing of a door in drum-type washing machine

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US (1) US20050223506A1 (fr)
DE (1) DE112005000669T5 (fr)
WO (1) WO2006001586A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040107509A1 (en) * 2002-11-28 2004-06-10 Lg Electronics, Inc. Apparatus for controlling door of drum type washing machine and method thereof
US20060112498A1 (en) * 2004-11-29 2006-06-01 Samsung Electronics Co., Ltd. Drum washing machine and method of controlling the same
US20100175431A1 (en) * 2007-06-26 2010-07-15 Kerem Erenay Washer/dryer
US20110265271A1 (en) * 2010-04-05 2011-11-03 Lg Electronics Inc. Apparatus for treating laundry and method for controlling the same
US20120137739A1 (en) * 2009-05-04 2012-06-07 Lg Electronics Inc. Washing machine
US20120194348A1 (en) * 2009-10-12 2012-08-02 Bsh Bosch Und Siemens Hausgerate Gmbh Household appliance, in particular a household dishwashing machine
JP2015130924A (ja) * 2014-01-09 2015-07-23 シャープ株式会社 洗濯機
US20160201251A1 (en) * 2013-08-16 2016-07-14 Haier Group Corporation Door-opening indicator for drum washing machine and door-opening control method therefor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039665A1 (de) * 2010-08-24 2012-03-01 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Einnehmen eines sicheren Betriebszustands einer Einrichtung eines Hausgeräts, Schaltungsanordnung zum Betreiben eines Hausgeräts und Hausgerät
DE102012100568A1 (de) * 2012-01-24 2015-08-13 Schneider Electric Gmbh Telefonsprechstelle mit einer Kindersicherung

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US5698826A (en) * 1995-02-01 1997-12-16 Maytag Corporation Selective back lighting of appliance control panel
US6041625A (en) * 1996-07-05 2000-03-28 Kabushiki Kaisha Toshiba Washing machine with direct drive mechanism for rotatable tub and agitator
US20030061840A1 (en) * 2000-03-18 2003-04-03 Hird Malcolm John Laundry appliance
US6582276B1 (en) * 2002-01-22 2003-06-24 Golden Bright Manufacturer Limited Toy washing machine
US20040107509A1 (en) * 2002-11-28 2004-06-10 Lg Electronics, Inc. Apparatus for controlling door of drum type washing machine and method thereof

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JPH10272280A (ja) * 1997-03-31 1998-10-13 Matsushita Electric Ind Co Ltd ランドリー装置
JP2003126590A (ja) * 2001-10-25 2003-05-07 Sharp Corp 洗濯機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5698826A (en) * 1995-02-01 1997-12-16 Maytag Corporation Selective back lighting of appliance control panel
US6041625A (en) * 1996-07-05 2000-03-28 Kabushiki Kaisha Toshiba Washing machine with direct drive mechanism for rotatable tub and agitator
US20030061840A1 (en) * 2000-03-18 2003-04-03 Hird Malcolm John Laundry appliance
US6582276B1 (en) * 2002-01-22 2003-06-24 Golden Bright Manufacturer Limited Toy washing machine
US20040107509A1 (en) * 2002-11-28 2004-06-10 Lg Electronics, Inc. Apparatus for controlling door of drum type washing machine and method thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040107509A1 (en) * 2002-11-28 2004-06-10 Lg Electronics, Inc. Apparatus for controlling door of drum type washing machine and method thereof
US7418754B2 (en) * 2002-11-28 2008-09-02 Lg Electronics Inc. Apparatus for controlling door of drum type washing machine and method thereof
US20060112498A1 (en) * 2004-11-29 2006-06-01 Samsung Electronics Co., Ltd. Drum washing machine and method of controlling the same
US7543346B2 (en) * 2004-11-29 2009-06-09 Samsung Electronics Co., Ltd. Drum washing machine and method of controlling the same
US20100175431A1 (en) * 2007-06-26 2010-07-15 Kerem Erenay Washer/dryer
US8590346B2 (en) * 2007-06-26 2013-11-26 Arcelik Anonim Sirketi Washer/dryer
US20120137739A1 (en) * 2009-05-04 2012-06-07 Lg Electronics Inc. Washing machine
US9051675B2 (en) * 2009-05-04 2015-06-09 Lg Electronics Inc. Washing machine
US20120194348A1 (en) * 2009-10-12 2012-08-02 Bsh Bosch Und Siemens Hausgerate Gmbh Household appliance, in particular a household dishwashing machine
US20110265271A1 (en) * 2010-04-05 2011-11-03 Lg Electronics Inc. Apparatus for treating laundry and method for controlling the same
US9273425B2 (en) * 2010-04-05 2016-03-01 Lg Electronics Inc. Apparatus for treating laundry and method for controlling the same
US20160201251A1 (en) * 2013-08-16 2016-07-14 Haier Group Corporation Door-opening indicator for drum washing machine and door-opening control method therefor
JP2015130924A (ja) * 2014-01-09 2015-07-23 シャープ株式会社 洗濯機

Also Published As

Publication number Publication date
WO2006001586A3 (fr) 2006-02-16
WO2006001586A2 (fr) 2006-01-05
WO2006001586A8 (fr) 2006-05-26
DE112005000669T5 (de) 2008-07-03

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AS Assignment

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

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KWEN, IG GUEN;KIM, SUN WOO;REEL/FRAME:016711/0290

Effective date: 20050411

STCB Information on status: application discontinuation

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