AU2005320477B2 - Control method for the drum washing machine - Google Patents

Control method for the drum washing machine Download PDF

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Publication number
AU2005320477B2
AU2005320477B2 AU2005320477A AU2005320477A AU2005320477B2 AU 2005320477 B2 AU2005320477 B2 AU 2005320477B2 AU 2005320477 A AU2005320477 A AU 2005320477A AU 2005320477 A AU2005320477 A AU 2005320477A AU 2005320477 B2 AU2005320477 B2 AU 2005320477B2
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AU
Australia
Prior art keywords
washing
drum
washing water
laundry
water
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.)
Ceased
Application number
AU2005320477A
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AU2005320477A1 (en
Inventor
Jae Cheol Lyu
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LG Electronics Inc
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LG Electronics Inc
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Filing date
Publication date
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Publication of AU2005320477A1 publication Critical patent/AU2005320477A1/en
Application granted granted Critical
Publication of AU2005320477B2 publication Critical patent/AU2005320477B2/en
Ceased legal-status Critical Current
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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • D06F33/30Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005Methods for washing, rinsing or spin-drying
    • D06F35/006Methods for washing, rinsing or spin-drying for washing or rinsing only
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02Rotary receptacles, e.g. drums
    • D06F37/12Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • D06F37/14Ribs or rubbing means forming part of the receptacle
    • D06F37/145Ribs or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04Heating arrangements
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/083Liquid discharge or recirculation arrangements
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/04Quantity, e.g. weight or variation of weight
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18Washing liquid level
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/06Recirculation of washing liquids, e.g. by pumps or diverting valves

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Description

P. OPEPJUC2OO9\PcruuY2532477 I pa dvc.241021209 -1- CONTROL METHOD FOR THE DRUM WASHING MACHINE Field of Invention The invention relates to a control method for a drum washing machine. For example, the present invention relates to a drum washing machine, and more particularly, to a control method for a drum washing machine capable of economizing in washing water as well as in electric power through enhancing a control method thereof.
Background of Invention Generally, a control method for a drum washing machine is that washing is performed by using friction power between a drum rotating by a motor and cloth item, cloths and beddings (hereinafter, "the laundry") in a state of the laundry being introduced within the drum. Thereby, during a washing cycle, the laundry may get little damage, may not be tangled, and washing efficiency may be enhanced.
FIGS. 1 and 2 schematically illustrate a related art structure of the conventional drum washing machine.
That is, referring to FIGS. 1 and 2, the conventional drum washing machine includes a body case 10, a tub 20 provided within the body case 10, a drum 20 rotatably mounted within the tub 20 and a driving part for driving the drum An opening 11 is formed in front of the body case 10, and is in communication with the drum Also, a door 40 is mounted at a surrounding portion of the opening 11 for opening/closing the opening 11.
Furthermore, there are provided a water supply valve 14 connected with an external water pipe and a detergent chamber assembly 15 connected with the water supply valve 14.
P O)PeRU\~UCV02D\Pe--/ry DD532I ap.doc-2=2009 -2- The detergent chamber assembly 15 is connected with the tub 20 for drawing water from the water supply pipe into the tub A damper 21 is connected with a downside of an outer circumferential surface of the tub and supported in the body case The damper 21 dampens vibrations generated in an operation of the drum washing machine.
The driving part includes a motor 71 for driving the drum 30, a belt 72 connected with belt pulleys 73 and 74 for transmitting driving force of the motor 71 to the drum According the conventional drum washing machine, a washing, rinsing and dehydrating cycle is performed in order by a controller (not shown), once there is a user's request for washing the laundry.
In the washing cycle, after a predetermined amount of washing water is introduced into the tub together with detergent of the detergent chamber assembly, the drum rotates with the laundry.
Hence, dirt is separated not only by detergent but also by friction between the laundry and the drum In the rinsing cycle, fresh washing water is supplied and the drum 30 rotates consistently to separate remaining detergent from the washing cycle and dirt from the laundry.
In the dehydrating cycle, the drum 30 rotates at a high speed (approximately 800 -1300 RPM) to dehydrate the laundry.
However, the conventional drum washing machine may cause a problem of wasting P :YPERUUC\2009Fbmlry2ODS320477I spldo-24O2/V209 -3washing water and detergent, and another problem of consumption of much more power than necessary.
Therefore, there have been efforts of developing a washing method adding functions economizing in power as well as in washing water.
It is generally desirable to overcome or ameliorate one or more of the above described difficulties, or to at least provide a useful alternative.
Summary of Invention In accordance with one aspect of the present invention, there is provided a control method for a drum washing machine comprising steps of: sensing an amount of the laundry introduced within a drum; predetermining a water level based on the sensed amount of the laundry; supplying an amount of washing water smaller than the predetermined water level, but enough to cause circulating the washing water; a first washing for washing the laundry roughly by means of rotating the drum and circulating the washing water, wherein the washing water circulates the drum through a circulating pump and a circulating channel pipe; re-supplying washing water to the predetermined water level; and a second washing for washing the laundry with rotating the drum in a state without pumping circulation.
A preferred embodiment of the present invention provides a control method for a drum washing machine capable of not only economizing in power and washing water but also enhancing washing efficiency.
Preferred embodiments of the invention, as embodied and broadly described herein, provide a control method for a drum washing machine includes steps of sensing an amount of the laundry introduced within a drum; predetermining a water level based on the sensed amount of the laundry; supplying an amount of washing water smaller than the P: OPER\RI00"fr.A200S32047 I spa dm-24O021209 -4predetermined water level, but enough to dampen the laundry as well as to cause pumping circulation; a first washing for washing the laundry roughly by means of circulating the small amount of the washing water; re-supplying washing water to the predetermined water level; and a second washing for washing the laundry with rotating the drum in a state without pumping circulation.
The step of the first washing includes a step of heating washing water.
Also, the step of the first washing is preformed by pumping-circulating and directly spraying washing water to the laundry.
In the step of the first washing, the step of heating washing water and the step of pumpingcirculating washing water are performed alternatively.
Furthermore, the step of the first washing is performed for a predetermined period of time.
Still further, the step of heating washing water is performed to a predetermined temperature.
Advantageous Effects First, a control method for a drum washing machine according to an embodiment of the present invention has an advantageous effect of economizing in washing water as well as in power, because washing is performed in an order of supplying a small amount of washing water and pumping-circulating washing water.
Second, the control method for the drum washing machine according to an embodiment of the present invention has another advantageous effect that it is possible to sterilize the laundry, because washing water is heated as well as pumping-circulating washing water.
Third, the control method for the drum washing machine according to an embodiment of P: OPER \2oO9\cbavyUcO0320477 I p dow-24I02rMO9 4a the present invention has another advantageous effect that it is possible to soak the laundry several times for separating dirt from the laundry more smoothly, because pumpingcirculating water and heating water are performed alternatively.
Finally, the control method for the drum washing machine according to an embodiment of the present invention has another advantageous effect of enhancing washing efficiency as well as separating dirt, because a step is added, in which washing water is re-supplied as much as a sensed amount of the laundry with rotating a drum.
Brief Description of the Drawings Preferred embodiments of the present invention are hereafter described, by way of nonlimiting example only, with reference to the accompanying drawings, in which: FIG. 1 is a longitudinally sectional view illustrating an inner structure of a related art drum washing machine.
FIG. 2 is a diagram from a front view of the inner structure of the related art drum washing machine.
FIG. 3 is a schematic diagram from a front view of an inner structure of a drum washing machine according to the present invention.
FIG. 4 is a longitudinally sectional view of the drum washing machine illustrated in FIG.
3.
FIG. 5 is a flow chart illustrating a control method for the drum washing machine according to the present invention.
Detailed Description of Preferred Embodiments of the Invention Reference will now be made in detail to the preferred embodiments of the present P: OPER \2009\Pe-2-005320477 I spa dclc2410209 4b invention, examples of which are illustrated in the accompanying drawings.
Referring to FIGS. 3 and 4, a preferred embodiment of the present invention will be described. First, a body case 110 is provided for defining an exterior of a drum washing machine.
A tub 120 is mounted within the body case 110 for holding washing water, and is supported in the body case 110.
A damper 148 is provided between the tub 120 and the body case 110 for dampening vibrations generated in an operation of the drum washing machine.
Also, a drum 130 is rotatably mounted within the tub 120 for having the laundry introduced therein.
As shown in FIG. 4, the drum 130 is in communication with an outside and has an opened side thereof, which is disposed toward an opening 110 of the body case 110.
A door 140 is provided at a portion where the opening 110 of the body case 110 is formed.
Also, a gasket 150 is provided at an inner circumferential surface of the opening 111 for airtightness between the door 140 and the opening 111.
Furthermore, a plurality of penetrating holes (not shown) is formed along a circumferential surface of the drum 130 for drawing washing water and steam into the drum 130.
Still further, a dispenser 200 is provided for supplying detergent and washing water into the tub 120, and a water supply valve 118 is connected thereto.
The water supply valve 118 is connected with an external water pipe (not shown) for drawing cooling water into the drum washing machine.
P: OPER\JUC\2009\FebruaWO0532 I sp dox-2410M09 -4c The dispenser 200 is provided within the body case 110 and capable of filling up detergent.
A water supplying pipe 210 is provided in the dispenser 200 for supplying washing water into the tub 120.
A circulating pump 400 is provided in a lower portion of the drum washing WO 2006/071022 PCT/KR2005/004448 machine for circulating washing water within the tub 120.
There is a circulating air channel pipe 410 between the circulating pump 400 and the tub 120, which draws washing water discharged into the lower portion of the tub 120 and re-discharges the washing water to a second side of the circulating pump 400 to re-draw it into the tub 120.
[51] That is, the circulating pump 400 pumps so as to re-discharge drawn washing water, and the washing water discharged from the circulating pump 400 passes upwardly through a circulating channel pipe 410 to be re-discharged at an upper front of the tub 120.
[52] As shown in FIG. 4, preferably, the circulating channel pipe 410 is provided at the gasket 150 in an upper front of the tub so that washing water may be sprayed into the tub 120.
[53] That is, a spray unit 415 is provided at the gasket 150 in an upper front of the tub 120 so as to spray washing water into the tub 120.
[54] On the other hand a heater 500 is mounted in a downside of the tub 120 for enabling the laundry to be sterilized by boiling washing water.
Then, the heater 500 is employed for soaking the laundry when re-circulating washing water to help dirt separated from the laundry, as well as for heating washing water for sterilizing the laundry.
[56] Since water in a down surface of the tub 120 is re-circulated by the circulating pump 400 and the water is sprayed into the rotating drum 130, not only the laundry may be dampened equally but also washing water may be saved.
[57] Preferably, a filter (not shown) is provided at the circulating pump 400 or the circulating channel pipe 410 for filtering dirt of the circulating washing water.
[58] Furthermore, as shown in FIG. 4, some part of the circulating channel pipe 410 may be formed as bellows 412 so that the circulating channel pipe 410 may maintain its position with the tub 120 safely in spite of vibrations generated in the operation of the drum washing machine, and the bellows 412 may be made of rubber.
[59] Though not shown in FIGS, a drain pipe (not shown) is provided in a lower portion of the drum washing machine for draining washing water after a washing or a rinsing cycle having been completed.
[601 A control method for the drum washing machine according to the present invention described above will be described.
[61] Referring to FIGS. 3 and 4 illustrating the drum washing machine according to the preferred embodiment of the present invention and FIG. 5 illustrating the control WO 2006/071022 PCT/KR2005/004448 6 method for the drum washing machine according to the present invention, a user introduces the laundry into a drum 130 first of all.
[62] Next, the amount of the laundry is sensed, which is loaded into the drum 130 (S 11).
[63 Hence, a washing water level is predetermined based on the sensed amount of the laundry (S21).
[64] Since it is well-known to anyone skilled in the art, the method of sensing the amount of the laundry as well as predetermining washing water level will be omitted.
Next, a smaller amount of washing water than the predetermined amount thereof is supplied enough to dampen the laundry and to cause pumping circulation (S31).
[66] That is, a controller (not shown) controls the dispenser 200 to draw the smaller amount of the washing water into the tub 120. Thereby, a process of initially supplying washing water may start.
[67] At that time, the smaller amount of the washing water means that some of the smaller washing water is enough to dampen the laundry and the rest of the washing water is enough to prevent cavitation in a process of pumping washing water.
[68] If cavitation occurs, air would be included in a process of pumping circulation only to cause noise as well as to deteriorate pumping efficiency.
[69] Hence, a step of a first washing is performed in which the smaller amount of the washing water is supplied and pumping-circulated by the circulation pump 400 to wash the laundry (S41).
In the step of the first washing, washing water having been pumping-circulated is sprayed directly to the laundry through the spray unit 415 within the drum washing machine.
[71] Preferably, a step is further included in which the drum 130 rotates at the same time that the washing water is sprayed.
[72] That is for equally dampening the laundry with the sprayed washing water by spraying the washing water and rotating the drum 120 at the same time.
[73] On the other hand the step of the first washing includes a step of heating supplied washing water by means of the heater 500.
[74] The heater 500 helps the laundry sterilized and also helps dirt separated from the laundry.
In that case, preferably the step of heating washing water and the step of pumpingcirculating washing water are performed alternatively.
[76] Also, the step of the first washing is performed for a predetermined period of time, and the step of heating washing water is performed only to a predetermined WO 2006/071022 PCT/KR2005/004448 7 temperature. Thereby, it is possible to prevent laundry damage due to an over-increase of the temperature.
[77] After completing the step of the first washing, washing water is re-supplied to the predetermined washing water level set based on the sensed amount of the laundry (S51).
[78] That is, predetermined washing water is re-supplied to the small amount of the washing water supplied before to reach the washing water level, which is predetermined based on the sensed amount of the laundry.
[79] Hence, a step of a second washing is performed with rotating the drum 130 in a state of not performing the pumping circulation in the step of the first washing (S61).
After the laundry is already soaked by pumping circulation and sterilized by heated washing water in the step of the first washing, the step of the second washing is performed. Thus, the amount of the detergent and washing water may be reduced as well as electric power economizing, compared with the related art washing method in which the laundry is washed after washing water is introduced to a predetermined level at beginning.
[81] Once the washing processes described above are completed, a rinsing and dehydrating cycle is performed to finish an entire washing.
[82] On the other hand a control method of the drum washing machine according to the present invention has following effects.
[83] First, once washing water is introduced at a small amount, the washing water is heater by a heater. That process is repeated to perform a soaking cycle several times.
Thereby, an enhanced washing efficiency such as a sterilizing function may be given.
[84] Also, the control method of the drum washing machine according to the present invention has another effect of economizing in washing water as well as in power, because a small amount of washing water is re-supplied in spray several times.
Furthermore, the control method of the drum washing machine according to the present invention may have another effect of preventing laundry damage caused by a drastic increase of the temperature as well as preventing the temperature of the drum from getting too high in washing, because supplying washing water, rotating the drum and heating washing water are performed alternatively.
[86] The present invention is not defined to the embodiment described before, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.
P: OPER JUOI~ooOR~cbruuWO05320477 I spa dw.24/O2/2O9 8- SFor example, a drum washing machine with a drying function having an air circulating channel, a heater and a fan may include the circulating pump, the circulating channel pipe and the spray unit. Hence, once a small amount of washing water is introduced and heated, and then circulated. Thereby, a washing method same as the washing method of the present invention may be performed.
SThus, it is intended that the present invention cover the modifications and variations of this Sinvention provided they come within the scope of the appended claims and their equivalents.
Industrial Applicability The present invention relates to a control method for a drum washing machine.
Since an entire washing according to the present invention is performed in an enhanced method to economizing in washing water as well as electric power, the present invention has an industrial applicability.
Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.
The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates.

Claims (7)

1. A control method for a drum washing machine comprising steps of: sensing an amount of the laundry introduced within a drum; predetermining a water level based on the sensed amount of the laundry; O supplying an amount of washing water smaller than the predetermined water level, (Ni t but enough to cause circulating the washing water; a first washing for washing the laundry roughly by means of rotating the drum and circulating the washing water, wherein the washing water circulates the drum through a circulating pump and a circulating channel pipe; re-supplying washing water to the predetermined water level; and a second washing for washing the laundry with rotating the drum in a state without pumping circulation.
2. The control method for the drum washing machine of claim 1, wherein the step of the first washing comprises a step of heating washing water.
3. The control method for the drum washing machine of claim 1, wherein the step of the first washing is preformed by pumping-circulating and directly spraying washing water to the laundry.
4. The control method for the drum washing machine of claim 2, wherein in the step of the first washing, the step of heating washing water and the step of pumping- circulating washing water are performed alternatively.
The control method for the drum washing machine of claim 1, wherein the step of the first washing is performed for a predetermined period of time.
6. The control method for the drum washing machine of claim 2, wherein the step of heating washing water is performed to a predetermined temperature. PAOPER\R C12OO9Pcb~wO320477 I spa dm.24OVMtX9
7. A control method for a drum washing machine substantially as hereinbefore described, with reference to the accompanying drawings.
AU2005320477A 2004-12-30 2005-12-22 Control method for the drum washing machine Ceased AU2005320477B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020040116166A KR101154952B1 (en) 2004-12-30 2004-12-30 drum washing machine and control method for the same
KR10-2004-0116166 2004-12-30
PCT/KR2005/004448 WO2006071022A1 (en) 2004-12-30 2005-12-22 Control method for the drum washing machine

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AU2005320477A1 AU2005320477A1 (en) 2006-07-06
AU2005320477B2 true AU2005320477B2 (en) 2009-03-26

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JP (1) JP5144276B2 (en)
KR (1) KR101154952B1 (en)
CN (1) CN101094950B (en)
AU (1) AU2005320477B2 (en)
ES (1) ES2524605T3 (en)
WO (1) WO2006071022A1 (en)

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KR101085904B1 (en) * 2007-02-26 2011-11-23 삼성전자주식회사 Washing machine and method to control laundry thereof
KR101144809B1 (en) * 2009-03-20 2012-05-11 엘지전자 주식회사 Washing machine and control method of the washing machine
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JP2017064078A (en) * 2015-09-30 2017-04-06 青島海爾洗衣机有限公司QingDao Haier Washing Machine Co.,Ltd. Washing machine
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JP5144276B2 (en) 2013-02-13
AU2005320477A1 (en) 2006-07-06
EP1831447A1 (en) 2007-09-12
CN101094950B (en) 2010-05-12
JP2008526296A (en) 2008-07-24
KR20060077348A (en) 2006-07-05
EP1831447A4 (en) 2013-10-23
CN101094950A (en) 2007-12-26
ES2524605T3 (en) 2014-12-10
WO2006071022A1 (en) 2006-07-06
KR101154952B1 (en) 2012-06-18
EP1831447B1 (en) 2014-10-01

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