US20160083887A1 - Washing machine and washing method using an integrated sensing device for water level and rotating unbalance - Google Patents

Washing machine and washing method using an integrated sensing device for water level and rotating unbalance Download PDF

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Publication number
US20160083887A1
US20160083887A1 US14/566,298 US201414566298A US2016083887A1 US 20160083887 A1 US20160083887 A1 US 20160083887A1 US 201414566298 A US201414566298 A US 201414566298A US 2016083887 A1 US2016083887 A1 US 2016083887A1
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Prior art keywords
washing
tub
washing tub
washing machine
magnetic
Prior art date
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Abandoned
Application number
US14/566,298
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English (en)
Inventor
In Young 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.)
WiniaDaewoo Co Ltd
Original Assignee
Dongbu Daewoo Electronics Corp
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Publication date
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Assigned to DONGBU DAEWOO ELECTRONICS CORPORATION reassignment DONGBU DAEWOO ELECTRONICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JANG, IN YOUNG
Publication of US20160083887A1 publication Critical patent/US20160083887A1/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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F33/02—
    • 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
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • D06F35/007—Methods for washing, rinsing or spin-drying for spin-drying only
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
    • 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
    • D06F37/30—Driving arrangements 
    • D06F37/306—
    • D06F39/005—
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/088—Liquid supply arrangements
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise 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
    • D06F2105/02—Water supply
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • 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
    • D06F2105/62—Stopping or disabling machine operation
    • 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
    • D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry

Definitions

  • the present disclosure relates to a washing machine and washing method using the same, and more particularly, to sensing mechanisms in a washing machine.
  • a washing machine refers to an apparatus which eliminates foreign substances on or in laundry by agitating and rotating water together with the laundry.
  • the washing machine typically uses a motor and performs washing, rinsing, and spin-drying processes to clean the laundry.
  • Washing machines may be classified into cylinder type washing machines, agitator type washing machines, and pulsator type washing machines in accordance with the structures of the washing machines.
  • a pulsator type washing machine washes the laundry using a water flow generated by motion (e.g., rotation) of a pulsator in a washing tub.
  • a laundry process using a washing machine includes at least a cycle of the following: a washing process, a rinsing process, and a spin-drying process.
  • washing process the laundry is washed by moving washing water that is stimulated by the rotating pulsator.
  • washing water and detergent are supplied to and contained in an outer tub of a washing tub.
  • the washing water with detergent in the washing tub is drained, and new water is supplied into the washing tub. Then, the inner tub of the washing tub is rotated for a certain amount of time at a relatively low speed. The aforementioned operations are repeatedly several times, followed by draining the washing water again from the washing tub.
  • the inner tub of the washing tub is rotated at a high speed, thereby removing the washing water/moisture remaining in the laundry.
  • a water level sensing device is used to sense the washing water level in the inner tub and ensure an appropriate amount of washing water is supplied to the washing tub, e.g., in accordance with the laundry load in the washing and rinse processes.
  • a vibration sensing device is used to sense any rotating unbalance or eccentric rotation of the inner tub during the spin-drying process.
  • the eccentric rotation is mainly caused by the unbalanced laundry weight distribution in the inner tub.
  • a water level sensing device and a vibration sensing device are separate devices installed in a washing machine, which involves high manufacture cost and installation complexity.
  • Embodiments of the present disclosure provide a washing machine that can control water supply as well as prevent vibration damage to the washing machine based on detection signals generated by a single sensing device.
  • a washing machine includes: a casing; a washing tub in the casing; a drive unit configured to rotate the washing tub; a control panel disposed on one side of an upper portion of the casing and including a circuit board; a magnetic sensor disposed on the circuit board in a direction toward an edge of the washing tub; and a magnetic body installed at the top of the washing tub and facing the magnetic sensor.
  • the circuit board may shut off water supply to the washing tub or stop the rotation of the washing tub in accordance with the intensity of a magnetic force measured by the magnetic sensor.
  • the washing tub may include a non-rotatable outer tub which stores washing water.
  • the magnetic body is installed at the upper wall of the outer tub.
  • An inner tub is installed inside the outer tub for accommodating clothes and can be rotated by the drive unit.
  • the circuit board may shut off the water supply if the detected intensity of the magnetic force is equal to or less than a first reference value, and may stop the rotation of the inner tub of the washing tub followed by performance of a preliminary spin-drying process if the detected intensity of magnetic force during a spin-drying process is equal to or less than a second reference value.
  • Another exemplary embodiment of the present disclosure provides a washing method which uses a magnetic body, which is provided at an edge of an upper portion of a washing tub, and a magnetic sensor, which is installed on a circuit board of a control panel so as to face the magnetic body, the washing method including: supplying washing water to the washing tub; and shutting off the water supply when an intensity of the magnetic force, which is sensed by the magnetic sensor, is at a first reference value or less.
  • a washing operation may be performed when the water supply is shut off.
  • Yet another exemplary embodiment of the present disclosure provides a washing method which uses a magnetic body, which is provided at an edge of an upper portion of a washing tub, and a magnetic sensor, which is installed on a circuit board of a control panel so as to face the magnetic body, the washing method includes: draining washing water from the washing tub; spin-drying clothes by rotating the washing tub; and stopping the rotation of the washing tub when the intensity of the magnetic force, which is sensed by the magnetic sensor, is at a second reference value or less.
  • the washing method may further include performing a preliminary spin-drying process when the rotation of the washing tub is stopped.
  • the washing machine and the washing method may not only control water supply by sensing a water level of the washing tub, but also prevent damage to the washing machine by sensing unbalance.
  • FIG. 1 is a cross-sectional view of an exemplary washing machine including an integrated sensing device operable to both detect water level and rotating unbalance of the washing tub according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart illustrating an exemplary washing method using the washing machine of FIG. 1 .
  • FIGS. 1 and 2 an exemplary washing machine 101 according to an embodiment of the present disclosure will be described with reference to FIGS. 1 and 2 .
  • the washing machine 101 includes a casing 500 , a washing tub 200 , a drive unit 800 , a control panel 400 , a magnetic sensor 470 , and a magnetic body 700 .
  • the washing machine 101 further includes a water supply device 560 , a drainage device 580 , a pulsator 300 , and a suspension system 600 .
  • the casing 500 defines an exterior housing of the washing machine 101 .
  • the washing tub 200 is disposed inside the casing 500 .
  • the washing tub 200 includes an inner tub 210 and an outer tub 220 .
  • the outer tub 220 stores washing water for washing clothes (laundry).
  • the inner tub 210 is disposed inside the outer tub 220 and can rotate while the outer tub 220 remains stationary.
  • the inner tub is used to accommodate clothes (or laundry).
  • the inner tub 210 has a plurality of water holes for washing water to flow from the outer tub 220 to the inner tub 210 , and vice versa.
  • the pulsator 300 is rotatably coupled to the bottom of the inner tub 210 of the washing tub and is operable to agitate water during the washing process.
  • the drive unit 800 drives the rotation of the pulsator 300 and the inner tub 210 .
  • the drive unit 800 includes a drive motor 810 , a driving shaft 830 coupled to the drive motor 810 , and a clutch device 820 which can intermittently transfer rotational force to the driving shaft 830 .
  • the pulsator 300 agitates the washing water along with the clothes in the washing tub 200 .
  • the drive motor 810 rotates the inner tub 210 during a spin-drying process
  • the clothes accommodated in the inner tub 210 of the washing tub 200 are spin-dried as the moisture is removed by the centrifugal force.
  • the water supply device 560 supplies the washing water to the outer tub 220 of the washing tub 200 .
  • the drainage device 580 drains the washing water used during the washing process from the outer tub 220 to the outside of the washing machine.
  • the drainage device 580 further includes a drain pipe coupled to the outer tub 220 of the washing tub 200 , and a control valve which opens and closes the drain pipe.
  • the suspension system 600 has one side coupled to the outer tub 220 , and the other side coupled to the casing 500 .
  • the suspension system 600 can absorb or dampen the vibration of the outer tub 220 and the inner tub 210 caused by the the rotation of the drive motor 810 .
  • the suspension system 600 supports the washing tub 200 in a suspended position and can absorb vertical vibration.
  • the control panel 400 is installed on one side of an upper portion of the casing 500 .
  • the control panel 400 allows a user to operate and control the washing machine 101 .
  • the control panel 400 includes a circuit board 450 including circuits for controlling several components of the washing machine 101 such as the drive motor 810 , the water supply device 560 , and the drainage device 580 , etc.
  • the magnetic sensor 470 is installed on the circuit board 450 .
  • the magnetic sensor 470 is installed on the circuit board 450 and face down toward an upper edge of the outer tub 220 .
  • the magnetic sensor 470 senses the intensity of the magnetic force generated by the magnetic body, and transmits the corresponding signals to the circuit board 450 .
  • the magnetic body 700 is installed at an edge of the upper portion of the outer tub 220 and faces upwards towards the magnetic sensor 470 .
  • the magnetic body 700 is installed in a position at the shortest distance from the magnetic sensor 470 . Accordingly, the magnetic sensor 470 senses a Gauss value of the magnetic field generated by the magnetic body 700 , and thereby measures the intensity of magnetic force.
  • the magnetic body 700 may be a permanent magnet, but the exemplary embodiments of the present disclosure are not limited thereto.
  • the circuit board 450 may send a signal to shut off the water supply to the washing tub 200 or stop the rotation of the washing tub 200 .
  • the circuit board 450 may shut off the water supply.
  • Different first reference values may be preset in a lookup table based on various laundry needs or situations, e.g., related to the type of laundry to be washed by the washing machine 101 , the amount of laundry, the size and weight of the washing tub 200 , and the like.
  • the circuit board 450 may send a signal to stop the rotation of the inner tub 210 and initiate a preliminary spin-drying process.
  • various second reference values may be preset in the lookup table based on different laundry needs and situations, e.g., related to the type of laundry, an amount of laundry, a size and weight of the washing tub, and the like.
  • the preliminary spin-drying process may include the operations of resupplying the washing water to the outer tub 220 , and/or alternately rotating the inner tub 210 in forward and reversed (e.g., clockwise and counter-clockwise) directions.
  • the washing machine 101 can control the water supply based on a sensed water level in the washing tub 200 , and can effectively prevent damage to the washing machine 101 based on sensed rotating unbalance.
  • the functionalities of sensing the water level and sensing vibration are simultaneously performed using a single device including the magnetic sensor 470 and the magnetic body, advantageously resulting in simplified design configuration and improved manufacturing and installation efficiency.
  • the washing method is performed using the washing machine which includes the magnetic body 700 at the edge of the upper portion of the washing tub 200 , and the magnetic sensor 470 on the circuit board 450 .
  • the magnetic sensor faces the magnetic body 700 , as illustrated in FIG. 1 .
  • the weight of the washing water causes the washing tub 200 to drop from its original position (or sag) to a lower vertical position.
  • the distance between the magnetic body 700 and the magnetic sensor 470 is increased.
  • the intensity of magnetic force sensed by the magnetic sensor 470 decreases.
  • the water is continuously supplied to the washing tub until the sensed intensity decreases to the first reference value.
  • the water supply is shut off, and the washing operation starts, e.g., by rotating the pulsator 300 (S 300 ).
  • the washing water is drained from the outer tub 220 of the washing tub 200 to the outside of washing machine (S 400 ), and the clothes (laundry) are spin-dried by rotating the inner tub 210 of the washing tub 200 (S 500 ).
  • a process that disentangles the clothes can effectively attenuate or even eliminate the rotating unbalance.
  • a “preliminary spin-drying process” is used to disentangle clothes.
  • washing water is resupplied to the washing tub 200 (S 750 ).
  • the preliminary spin-drying process may include the operation of alternately rotating the inner tub 210 of the washing tub 200 in the forward and reversed directions to disentangle the clothes.
  • the water supply amount can be properly controlled and vibration damage to the washing machine 101 can be effectively prevented based on signals generated from a single sensing device which includes the magnetic sensor 470 and the magnetic body 700 in this example.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
US14/566,298 2014-09-22 2014-12-10 Washing machine and washing method using an integrated sensing device for water level and rotating unbalance Abandoned US20160083887A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140125757A KR20160034611A (ko) 2014-09-22 2014-09-22 세탁 장치 및 이를 이용한 세탁 방법
KR10-2014-0125757 2014-09-22

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KR (1) KR20160034611A (ko)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222924A (zh) * 2016-08-26 2016-12-14 杜杭华 一种使用寿命长的洗衣机
US20180100259A1 (en) * 2016-10-06 2018-04-12 Emz-Hanauer Gmbh & Co. Kgaa Washing machine and method of controlling the washing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111088636B (zh) * 2018-10-23 2023-02-17 青岛海尔洗涤电器有限公司 一种滚筒洗衣机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1218120A (zh) * 1997-11-25 1999-06-02 三星电子株式会社 洗衣机
TW415981B (en) * 1998-07-16 2000-12-21 Samsung Electronics Co Ltd Washing machine having a hybrid sensor and a control method thereof
KR20100116325A (ko) * 2009-04-22 2010-11-01 엘지전자 주식회사 세탁장치
EP2659045A2 (en) * 2010-12-27 2013-11-06 Arçelik Anonim Sirketi Washing machine wherein the unbalanced load is balanced
EP2692929A4 (en) * 2011-03-28 2015-04-08 Dongbu Daewoo Electronics Corp METHOD FOR CONTROLLING DEHYDRATION IN A DRUM MACHINE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222924A (zh) * 2016-08-26 2016-12-14 杜杭华 一种使用寿命长的洗衣机
US20180100259A1 (en) * 2016-10-06 2018-04-12 Emz-Hanauer Gmbh & Co. Kgaa Washing machine and method of controlling the washing machine
US10570543B2 (en) * 2016-10-06 2020-02-25 Emz-Hanauer Gmbh & Co. Kgaa Washing machine and method of controlling the washing machine

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CN105442247A (zh) 2016-03-30

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Owner name: DONGBU DAEWOO ELECTRONICS CORPORATION, KOREA, REPU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JANG, IN YOUNG;REEL/FRAME:034466/0413

Effective date: 20141121

STCB Information on status: application discontinuation

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