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EP2423368B1 - Machine à laver de type tambour - Google Patents

Machine à laver de type tambour Download PDF

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Publication number
EP2423368B1
EP2423368B1 EP11171960.5A EP11171960A EP2423368B1 EP 2423368 B1 EP2423368 B1 EP 2423368B1 EP 11171960 A EP11171960 A EP 11171960A EP 2423368 B1 EP2423368 B1 EP 2423368B1
Authority
EP
European Patent Office
Prior art keywords
water
drum
washing
laundry
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.)
Not-in-force
Application number
EP11171960.5A
Other languages
German (de)
English (en)
Other versions
EP2423368A1 (fr
Inventor
Toshihiko Yasui
Wataru Uchiyama
Shigeharu Nakamoto
Katsuya Wakita
Tomoyuki Kikukawa
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.)
Panasonic Corp
Original Assignee
Panasonic Corp
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 JP2010182036A external-priority patent/JP2012040082A/ja
Priority claimed from JP2010182037A external-priority patent/JP2012040083A/ja
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP2423368A1 publication Critical patent/EP2423368A1/fr
Application granted granted Critical
Publication of EP2423368B1 publication Critical patent/EP2423368B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 to a drum-type washing machine for washing laundry such as clothes.
  • this drum-type washing machine performs washing by a so-called beat washing.
  • beat washing a drum storing therein laundry is caused to rotate in forward and reverse directions at a low speed to thereby raise and drop the laundry repeatedly.
  • dirt is cleaned by the impact caused when the laundry wet with washing water is caused to drop from the upper part of the drum by drum rotation.
  • FIG. 5 illustrates a cross-sectional structure of a conventional drum-type washing machine.
  • drum-type washing machine 100 is configured so that water tub 52 provided in housing 51 receives drum 53 having a cylinder-like shape having a bottom so that drum 53 can be rotated in forward and reverse directions.
  • a bottom part of water tub 52 is attached to motor 54.
  • Motor pulley 55 attached to the driving axis of motor 54 is rotated and power is transmitted via driving belt 56 to driving pulley 57 attached to the rotation axis of drum 53 to thereby rotate drum 53.
  • Washing water is supplied by feed-water valve 58 to water tub 52. Washing water in water tub 52 is drained from drainage water opening 59 via drainage water valve 60 to the outside of the machine through drainage water path 61.
  • a front face of housing 51 has openable-and-closable door 62. Laundry 64 can be inputted and outputted through cloth input opening 63 opened at the front face-side of drum 53.
  • FIG. 6 is a time chart of the operation of conventional drum-type washing machine 100 in the washing step.
  • the amount of laundry 64 inputted to the interior of drum 53 is determined.
  • washing water set depending on the amount is supplied from feed-water valve 58 into water tub 52.
  • motor 54 is driven.
  • the first washing step is performed in which drum 53 is rotated at such a rotation number that allows laundry 64 to tumble in drum 53 (e.g., 50rpm).
  • the second washing step is performed in which drum 53 is rotated at a rotation number for subjecting the laundry to the squeeze washing (e.g., 200rpm).
  • the first washing step and the second washing step are repeated alternately.
  • the time during which the first washing step and the second washing step are performed is predetermined depending on the amount of inputted laundry 64. This has caused a disadvantage where it is difficult to improve a cleaning effect within a limited set time for the washing step and within a shorter time.
  • the present invention has been made in view of the above-described disadvantages of the conventional technique.
  • the present invention provides a drum-type washing machine that achieves reduced uneven washing and a superior washing performance within a limited time for the washing step, even when laundry is in a high amount.
  • the drum-type washing machine of the present invention includes: a housing; a water tub elastically supported in the housing; a drum having a cylinder-like shape having a bottom, the drum being rotatably provided in the water tub; a water supply section for supplying washing water into the water tub; a water drainage section for draining the washing water in the water tub; a motor for driving the drum to rotate; and a control section for controlling the driving of the motor.
  • the control section switches, in a step of washing laundry, the first agitation washing step of rotating the drum at a low speed so that the laundry can tumble in the drum, a high-speed rotation step of rotating the drum at a high speed so that the laundry clings to the inner periphery of the drum, and the second agitation washing step of rotating the drum at a low speed so that the laundry can tumble in the drum.
  • the time during which the first agitation washing step performed firstly is carried out is longer than the time during which the second agitation washing step is carried out and the time during which the high-speed rotation step is carried out at other timings.
  • the drum-type washing machine of the present invention can provide reduced uneven washing and a superior washing performance within a limited time for the washing step, even when laundry is in a high amount.
  • drum-type washing machine 50 in the first embodiment of the present invention.
  • FIG. 1 illustrates the cross-sectional configuration of drum-type washing machine 50 in the first embodiment of the present invention.
  • housing 1 of drum-type washing machine 50 includes therein water tub 2 elastically supported by a damper for example.
  • Water tub 2 includes therein drum 3 having a cylindrical shape having a bottom so that drum 3 is rotatable.
  • the rotation axis of drum 3 is upwardly inclined from the rear side to the front side.
  • Drum 3 has, at the inner circumference side face thereof, baffles 4 inwardly protruding in the rotation axis direction and many through holes 5 communicating with the interior of water tub 2.
  • Drum 3 has, at the front face side thereof, opening section 6 through which laundry is inputted and outputted.
  • Water tub 2 has, at the rear face, motor 7 for driving drum 3 to rotate.
  • Motor 7 is configured by a brushless direct-current motor and can freely change the rotating speed by an inverter control.
  • Feed-water valve 8 functions as a water supply section to supply washing water into water tub 2.
  • Feed-water valve 8 supplies washing water into water tub 2 via detergent receiving case 10.
  • Detergent receiving case 10 is provided in water supply path 9 and is used to input detergent. The washing water supplied to the interior of water tub 2 flows from through holes 5 into drum 3.
  • the washing water in water tub 2 can be circulated into drum 3 by first circulation pump 12 provided in first circulating water path 11.
  • Water tub 2 has, at the lower part thereof, suction section 13.
  • Suction section 13 communicates with first circulating water path 11 and is used to suck washing water.
  • discharge section 14 is provided that communicates with first circulating water path 11 so that the washing water is discharged into drum 3.
  • First circulating water path 11 has first on-off valve 15 that is provided at the upstream side of first circulation pump 12 (i.e., between suction section 13 and first circulation pump 12). First circulating water path 11 between suction section 13 and first on-off valve 15 is connected to drainage water path 17 having drainage water valve 16.
  • first circulation pump 12 In order to drive first circulation pump 12 to discharge the washing water in water tub 2 into drum 3 through discharge section 14, drainage water valve 16 is closed and first on-off valve 15 is opened. As a result, the washing water in water tub 2 can be sucked through suction section 13 into first circulating water path 11 and can be circulated through discharge section 14 into drum 3.
  • water storage section 18 is provided into which the washing water in water tub 2 can be caused to flow.
  • Water storage section 18 is connected to the interior of water tub 2 via inflow path 19.
  • Inflow path 19 is connected to first circulating water path 11 between suction section 13 and first on-off valve 15.
  • Inflow path 19 has second on-off valve 20 (on-off valve).
  • the washing water in water storage section 18 can be circulated into drum 3 by second circulation pump 22 provided in second circulating water path 21.
  • Second circulating water path 21 is structured so that one side is connected to water storage section 18 and the other side is connected to discharge section 23.
  • Discharge section 23 is provided at the upper side of opening section 6 provided at the front face-side of drum 3 so that washing water is discharged into drum 3.
  • first on-off valve 15 and drainage water valve 16 are closed and second on-off valve 20 is opened.
  • the washing water in water tub 2 can be caused to flow into water storage section 18 from suction section 13 through inflow path 19 and can be circulated into drum 3 from discharge section 23 through second circulating water path 21.
  • first on-off valve 15 and second on-off valve 20 are closed and drainage water valve 16 is opened.
  • the washing water in water tub 2 can be drained to the outside of the machine through drainage water path 17.
  • Control section 24 provided in housing 1 drives motor 7, feed-water valve 8, first circulation pump 12, first on-off valve 15, drainage water valve 16, second on-off valve 20, and second circulation pump 22 for example and sequentially controls the respective steps such as washing, rinsing, and dewatering.
  • Laundry can be inputted and outputted through opening section 6 provided at the front face-side of drum 3 by opening openable-and-closable door 25 provided in the front face of housing 1.
  • drum-type washing machine 50 having the configuration as described above.
  • a user opens door 25 provided at the front face-side of housing 1 and inputs laundry into drum 3 through opening section 6. Then, when the user turns ON a power source switch of operation section 26 provided at the front part of the upper face of housing 1 and operates a start switch, then drum-type washing machine 50 starts operation. Then, cloth amount sensing section 80 determines the amount of the inputted laundry. Cloth amount sensing section 80 can use various known methods. For example, the amount of the laundly can be determined by measuring time from when motor 7 which drives rotation of drum 3 is stopped until when drum 3 stoppes actual rotation.
  • Washing is carried out in an order of a washing step, a rinsing step, and a dewatering step.
  • the following section will describe the washing step in detail based on the time charts of FIG. 2 and FIG. 3 and will not further describe the rinsing step and the dewatering step.
  • FIG. 2 is a time chart illustrating the washing step of drum-type washing machine 50 in the first embodiment of the present invention.
  • FIG. 3 is a time chart illustrating the operation of drum 3 of drum-type washing machine 50 in the washing step.
  • the washing step of drum-type washing machine 50 of the present invention is performed after the above-described determination of the amount of the inputted laundry.
  • the washing step starts with the first water supply step to introduce, depending on the sensed laundry weight, water of a predetermined amount into water tub 2 and drum 3.
  • feed-water valve 8 is firstly opened and water is supplied through a clean water piping, thereby starting the water supply.
  • the amount of water supply and the respective times for the washing operation are predetermined depending on the weight of inputted laundry.
  • Washing water is supplied into water tub 2 via water supply path 9 while dissolving the detergent inputted in a predetermined amount into detergent case 10.
  • the washing water supplied to the interior of water tub 2 flows from through holes 5 into drum 3.
  • the washing water supplied to water tub 2 enters first circulating water path 11 from suction section 13 through opened first on-off valve 15 and reaches first circulation pump 12.
  • the amount of supplied water is sensed by a water level sensing section (not shown).
  • control section 24 drives first circulation pump 12 to circulate the washing water in water tub 2 into drum 3.
  • the washing water including the one having entered drum 3 through through holes 5 by the increased water level of the washing water in water tub 2 is discharged from discharge section 14 into drum 3 by driving first circulation pump 12. This can promote the permeation of washing water into the laundry.
  • control section 24 closes feed-water valve 8 and stops water supply.
  • the first water supply step is followed by the first agitation washing step.
  • the first agitation washing step is performed for predetermined time T1.
  • the first agitation washing step is performed while first on-off valve 15 is being opened and second on-off valve 20 and drainage water valve 16 are being closed.
  • First circulation pump 12 is used to suck the washing water in water tub 2 from suction section 13 into first circulating water path 11 and is discharged from discharge section 14 to the laundry in drum 3.
  • the rotating speed of drum 3 is set so that the laundry is raised by baffle 4 provided in drum 3 along the rotation direction of drum 3 and is dropped by its weight from the upper side of drum 3 and the mechanical action during drop is effectively applied to the laundry.
  • the rotating speed of drum 3 is set to such a rotating speed that prevents the laundry from clinging by a centrifugal force to the side wall face of the inner circumference of drum 3 (e.g., 30 to 60rpm).
  • the rotating speed of drum 3 depends on the amount of laundry, the rotating speed of drum 3 is preferably 50rpm. As shown in FIG. 3 , drum 3 is repeatedly rotated in alternate forward and reverse directions.
  • Predetermined time T1 of the first agitation washing step is set to 6 minutes for example. Predetermined time T1 is set so that the laundry is sufficiently wet with washing water and predetermined time T1 is longer than predetermined time T2 of the subsequent high-speed rotation step and predetermined time T3 of the second agitation washing step.
  • the operation of first circulation pump 12 for circulating washing water may be performed continuously or intermittently.
  • Discharge section 14 preferably has such a shape that allows washing water to diffuse in a fan-like form in order to quickly wet the laundry with the washing water.
  • Discharge section 14 may be provided at the lower part of opening section 6 provided at the front face-side of drum 3 or also may be provided so that washing water flows into drum 3 while flowing along the circumference wall face of drum 3. When drum 3 is rotated during the discharge of washing water, the relative displacement of the laundry can be promoted in drum 3, thus uniformly wetting the laundry.
  • the high-speed rotation step is started.
  • first circulation pump 12 is stopped, first on-off valve 15 is closed, second on-off valve 20 is opened, and water tub 2 is allowed to communicate with water storage section 18. Drainage water valve 16 is still closed.
  • control section 24 drives second circulation pump 22. Then, the washing water in water storage section 18 is discharged to the laundry in drum 3 through second circulating water path 21 from discharge section 23 positioned at the upper side of opening section 6 provided at the front face-side of drum 3.
  • the rotating speed of drum 3 in the high-speed rotation step rotating speed is set to 100 to 400rpm and preferably 300rpm for example so that the washing water included in the laundry can be forcedly discharged by a centrifugal force.
  • the first high-speed rotation is performed while a high amount of washing water is being absorbed by the laundry.
  • the rotation number increases only about to 200rpm at about 30 seconds.
  • drum 3 is again allowed to rotate at a high-speed, thus increasing the rotation number to about 300rpm.
  • this high-speed rotation step is performed at least one time in the washing step, this high-speed rotation step is preferably performed a plurality of times, preferably in a continuous manner.
  • the high-speed rotation step also causes the washing water to be discharged to the laundry in drum 3.
  • the washing water having flowed from water tub 2 to the interior of water storage section 18 by the gravity is continuously discharged by second circulation pump 22 to the laundry in drum 3.
  • the centrifugal force obtained by the high-speed rotation of drum 3 can be used to supply the washing water from discharge section 23 to the laundry while removing the washing water among the fibers of the laundry.
  • the washing water among the fibers is substituted continuously, thus providing a higher cleaning effect.
  • predetermined time T2 is set so that drum 3 is rotated at a high speed for a longer time depending on the amount of the laundry inputted to the interior of drum 3 that is determined by cloth amount sensing section 80.
  • a higher amount of laundry means an increased amount of washing water included in the laundry.
  • a higher amount of laundry means an increased thickness of the laundry layered in drum 3 (i.e., the distance from the surface of the laundry to through holes 5 provided in the inner circumference side face of drum 3).
  • a higher amount of laundry means that a longer time is required for the washing water to go through the fibers to enter water tub 2 via through holes 5.
  • predetermined time T2 is set as described above.
  • Table 1 shows the amount of the laundry inputted to the interior of drum 3 and the time of the high-speed rotation step. Predetermined time T2 for the high-speed rotation is set in a range from 30 seconds to 120 seconds depending on the amount of the laundry. [Table 1] Amount of laundry Time of high-speed rotation step Lower than 2kg 30s 2kg or more and lower than 4.5kg 45s 4.5kg or more and lower than 6kg 60s 6kg or more 120s
  • washing water included in laundry can be removed from the laundry by a centrifugal force by the high-speed rotation. Furthermore, the washing water including dissolved dirt also can be effectively removed from the fibers. Since predetermined time T2 for the high-speed rotation of drum 3 is set to be longer with an increase of the amount of laundry, the dirt substance in fibers can be effectively removed together with washing water.
  • the second water supply step is started.
  • second circulation pump 22 is driven to discharge the washing water in water storage section 18 to the laundry in drum 3 via second circulating water path 21.
  • first on-off valve 15, second on-off valve 20, and drainage water valve 16 are closed to collect the washing water at bottom part of water tub 2.
  • first on-off valve 15 is opened and drainage water valve 16 and second on-off valve 20 are closed to thereby allow first circulation pump 12 to communicate with water tub 2. Thereafter, first circulation pump 12 is driven. Then, the washing water collected at the bottom part of water tub 2 is sucked through first circulation pump 12 and is discharged from discharge section 14 into drum 3 via first circulating water path 11. During this, drum 3 is rotated at such a rotation number that allows the laundry to tumble in the drum 3 without clinging to the circumference-side wall face. In this embodiment, as shown in FIG. 3 , drum 3 is repeatedly rotated at 50rpm in alternate forward and reverse directions.
  • the fibers of the laundry is allowed to again include thereamong the washing water including dissolved detergent.
  • the dirt substance remaining in the fibers can be peeled off. If the fibers include thereamong washing water including a dirt substance of a high concentration, a risk is caused where the dirt substance may be attached to the fibers again. However, the dirt substance can be suppressed from being attached to the fibers again by forcedly substituting the washing water among the fibers.
  • the first agitation washing step that is firstly performed among the above-described washing steps is carried out for predetermined time T1 that is set to be longer than predetermined time T2 for the high-speed rotation step to rotate drum 3 at a high-speed and to be longer than predetermined time T3 for the second agitation washing step performed after the high-speed rotation step.
  • predetermined time T1 for the first agitation washing step and predetermined time T3 for the second agitation washing step have a relation of T1>T3.
  • the first agitation washing step can provide an effective cleaning effect by being performed for a time longer than the time for an agitation washing performed at another timing (the second agitation washing step).
  • the present invention is not limited to the above illustrative number of the high-speed rotation step in the washing step to rotate drum 3 at a high speed.
  • the high-speed rotation step is preferably performed a plurality of times because this means an increased number of substitution of washing water.
  • the high-speed rotation step may be performed continuously or the high-speed rotation steps also may be performed discontinuously to include thereamong a step such as an agitation washing step.
  • the laundry washing step causes first circulation pump 12 to be driven to circulate the washing water in water tub 2 into drum 3. Then, the processing proceeds to the low-speed rotation for allowing the laundry to tumble in drum 3 (i.e., for preventing the laundry from clinging to the inner circumference face of drum 3) and the high-speed rotation for allowing the laundry to cling to the inner circumference face of drum 3. Furthermore, the time for the low-speed rotation of drum 3 (i.e., the first agitation washing step) that is firstly performed is set to be longer than the time for another low-speed rotation (i.e., the time for the second agitation washing step) and the time for the high-speed rotation step. As a result, the permeation of the washing water in the laundry and the removal of the dirt substance among the fibers can be carried out effectively. Thus, uneven washing can be reduced and a cleaning effect can be improved within a limited time for the washing step.
  • the time for the low-speed rotation of drum 3 i.e., the first agitation washing
  • the washing water in water tub 2 is caused to flow into water storage section 18 and second circulation pump 22 is driven to circulate the washing water in water storage section 18 into drum 3.
  • a centrifugal force obtained by the high-speed rotation of drum 3 can be used to remove the washing water including dissolved dirt from the fibers.
  • the washing water among the fibers can be substituted continuously while wetting the laundry.
  • a cleaning effect can be improved and the lower part of drum 3 immersed in the washing water in water tub 2 can be allowed to exposed out of the water surface of the washing water.
  • the resistance by the washing water during the high-speed rotation can be excluded to thereby reduce the load applied to motor 7, thus allowing drum 3 to smoothly rotate at a high speed.
  • Drum-type washing machine 70 has the same configuration as that of drum-type washing machine 50 described in the first embodiment. However, a difference therebetween is that the operation performed by control section 34 is different from the one performed by control section 24 of drum-type washing machine 50.
  • the components having the same configuration will be denoted with the same reference numerals and the detailed description of such components is the same as that in the first embodiment.
  • FIG. 4 is a time chart illustrating the operation in the washing step of drum-type washing machine 70 in the second embodiment of the present invention.
  • Drum-type washing machine 70 of this embodiment is configured so that, in the first agitation washing step of the laundry washing step, second on-off valve 20 (on-off valve) is opened during the low-speed rotation of drum 3 to start the water drainage from water tub 2 and, when the lower part of drum 3 is above the water surface, the high-speed rotation step is started.
  • second on-off valve 20 on-off valve
  • Predetermined time T4 is set to a time required from the opening of second on-off valve 20 through the decline of the water level of the washing water in water tub 2 to a predetermined depth.
  • time T4 is set to a time required from the opening of second on-off valve 20 until the lowest point on the circumference located in a predetermined distance from the bottom plane of drum 3 moves to a position above the water surface.
  • the flow of the washing water to water storage section 18 can be started.
  • the high-speed rotation step can be started.
  • the resistance by the washing water collected at the bottom part of water tub 2 can be excluded when the first agitation washing step shifts to the high-speed rotation step.
  • the load applied to motor 7 to rotate drum 3 at a high speed can be reduced and the torque can be reduced and the washing step can be performed efficiently.
  • a disadvantage also can be solved where the washing water collected at the bottom part of water tub 2 is agitated and foamed by drum 3 to thereby hindering the rotation number of drum 3 from increasing.
  • Another configuration also can be used where, by sensing the water level of the washing water collected in water tub 2, the water level is sensed at which the lowest point on the circumference located in a predetermined distance from the bottom plane of drum 3 is exposed out of the washing water collected in water tub 2 to thereby start the high-speed rotation step.
  • the circulation amount of the washing water in water storage section 18 by second circulation pump 22 can be increased to thereby cause the water level in water tub 2 to fall, thus allowing the lower part of drum 3 to be exposed out of the washing water collected in water tub 2.
  • First circulation pump 12 also may be used. In this case, second circulating water path 21, first circulating water path 11, or both of second circulating water path 21 and first circulating water path 11 are filled with the washing water. This can substantially reduce the amount of the washing water existing in water tub 2.
  • drum-type washing machines 50 and 70 also can be applied to a drum-type wash dryer having a dry function.
  • the time for the first beat washing is increased for which the highest amount of dirt is strongly attached to laundry. This allows, during the subsequent high-speed rotation step, more dirt to be removed from the fibers of the clothes. This also allows, during the subsequent beat washing step, dirt remaining in the fibers of the clothes to be already peeled off by the chemical action by the washing water and the mechanical action by the beat washing. As a result, dirt can be removed from the fibers within a shorter time. Thus, the washing performance can be improved within a limited short time.
  • Drum-type washing machine 50 having a rating capacity of 9kg as described in the first embodiment of the present invention was compared with a conventional method. Specifically, comparison was made for the case where time T1 for the first agitation washing step was longer than time T3 for the second agitation washing step in the washing step.
  • a cleaning test was performed by a sample laundry of 9kg specified by Japan Electrical
  • JEMA Joint Manufacturers' Association
  • a general washing process was carried out with a water temperature of 20 degrees C to include a washing step, a rinsing step, and a dewatering step.
  • the steps after the rinsing step were carried out with substantially the same water amount and time.
  • the washing time was set to 10 minutes, both for the embodiment of the present invention and the conventional method.
  • the washing step of drum-type washing machine 50 was composed of the first agitation washing step of 6 minutes, two continuous high-speed rotation steps of 30 seconds each (total 1 minute), the first water supply step and the second water supply step of the total of 1 minute, and the second agitation washing step of 2 minutes, all of which constituted the washing process of 10 minutes.
  • the rotation number reached to 140rpm within the first 30 seconds and to 250rpm within the subsequent 30 seconds. Thereafter, the second agitation washing step was performed for 2 minutes.
  • the measurement result of the cleaning level of the JIS-standard contaminated cloth showed that the average value of the cleaning level of the conventional method was "0.32" while the average value of the present invention "0.38", showing an improved cleaning level.
  • the dispersion of the measurement results of the cleaning level while the dispersion of the conventional method was “0.07", the dispersion of the present invention was “0.06", which substantially either equaling or surpassing the dispersion of the conventional method.
  • the drum-type washing machine of the present invention showed a superior cleaning level and an improved washing performance.
  • the present invention can provide reduced uneven washing and an improved cleaning effect even when a high amount of laundry is washed within a washing process of a limited time.
  • the present invention is useful for a drum-type washing machine for example.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (6)

  1. Machine à laver de type tambour (50, 70) comprenant :
    un châssis (1) ;
    une cuve à eau (2) supportée élastiquement dans le logement (1) ;
    un tambour (3) de forme cylindrique ayant un fond, le tambour (3) étant installé dans la cuve à eau de manière à pouvoir effectuer une rotation ;
    une section d'adduction d'eau (8) pour alimenter la cuve à eau (2) en eau de lessive ;
    une section d'évacuation d'eau (16) pour évacuer l'eau de lessive contenue dans la cuve à eau (2) ;
    un moteur (7) pour entraîner le tambour (3) en rotation ; et
    une section de commande (24) pour commander l'entraînement du moteur (7),
    la section de commande (24) permutant, au cours d'une étape de lessive, entre
    une première étape de lavage par agitation consistant à faire tourner le tambour (3) à basse vitesse afin que le linge puisse culbuter dans le tambour (3),
    une étape de rotation à grande vitesse consistant à faire tourner le tambour (3) à grande vitesse afin que le linge soit plaqué contre la circonférence interne du tambour (3), et
    une deuxième étape de lavage par agitation (3) à basse vitesse afin que le linge puisse culbuter dans le tambour (3) ; et caractérisée en ce que
    une durée pendant laquelle est effectuée en premier lieu la première étape de lavage par agitation est plus longue qu'une durée pendant laquelle est effectuée la deuxième étape de lavage par agitation et qu'une durée pendant laquelle est effectuée l'étape de rotation à grande vitesse à d'autres moments ; et
    le tambour (3) est mis en rotation de manière répétée dans les sens avant et arrière au moins au cours de la deuxième étape de lavage par agitation.
  2. Machine à laver de type à tambour (56, 70) selon la revendication 1 :
    la machine à laver de type à tambour (50, 70) comprenant en outre une section de détection de quantité de linge (80) pour déterminer la quantité de linge placé dans le tambour (3), et
    la section de commande (24) augmentant la durée de l'étape de rotation à grande vitesse (3) en cas d'augmentation de la quantité de linge dans l'étape de lessive.
  3. Machine à laver de type à tambour (50) selon la revendication 1 ou la revendication 2, comprenant en outre :
    un premier circuit de circulation d'eau (11) pour faire circuler l'eau de lessive contenue dans la cuve à eau (2) vers le tambour (3), et
    une première pompe de circulation (12) installée sur le premier circuit de circulation d'eau (11).
  4. Machine à laver de type à tambour (50) selon la revendication 1 ou la revendication 2, comprenant en outre :
    une section de retenue d'eau (18) pour récupérer l'eau de lessive qui s'est écoulée hors de la cuve à eau (2),
    une vanne tout-ou-rien (20) pour provoquer un écoulement de l'eau de lavage contenue dans la cuve à eau (2) vers la section de retenue d'eau (18),
    un deuxième circuit de circulation d'eau (21) pour faire circuler l'eau de lessive contenue dans la section de retenue d'eau (18) vers le tambour (3), et
    une deuxième pompe de circulation (22) installée sur le deuxième circuit de circulation d'eau (21),
    dans laquelle :
    lors de l'étape de lessive, la section de commande est configurée pour provoquer l'ouverture de la vanne tout-ou-rien (20) lors de l'étape de rotation à grande vitesse afin de provoquer un écoulement de l'eau de lessive contenue dans la cuve à eau (2) vers la section de retenue d'eau (18) de telle manière que l'eau de lessive dans la section de retenue d'eau (18) soit mise en circulation dans le tambour (3) par la deuxième pompe de circulation (22).
  5. Machine à laver de type à tambour (70) selon la revendication 1 ou la revendication 2, comprenant en outre :
    une section de retenue d'eau pour récupérer l'eau de lessive qui s'est écoulée hors de la cuve à eau (2), et
    une vanne tout-ou-rien (20) pour provoquer un écoulement de l'eau de lessive contenue dans la cuve à eau (2) vers la section de retenue d'eau (18),
    la section de commande (24) étant configurée pour provoquer, lors de l'étape de lessive, l'ouverture de la vanne tout-ou-rien (20) lors de la première étape de lavage par agitation afin d'initier l'évacuation d'eau vers la section de retenue d'eau (18), et provoquant l'exécution de l'étape de rotation à grande vitesse lorsqu'un niveau d'eau de l'eau de lessive dans la cuve à eau (2) descend jusqu'à une profondeur prédéterminée.
  6. Machine à laver de type à tambour (70) selon la revendication 4, dans laquelle :
    la section de commande (24) provoque, lors de l'étape de lessive, l'ouverture de la vanne tout-ou-rien (20) lors de la première étape de lavage par agitation de manière à initier l'évacuation d'eau vers la section de retenue d'eau (18) et provoque l'exécution de l'étape de rotation à grande vitesse lorsqu'un niveau d'eau de l'eau de lessive dans la cuve à eau (2) descend jusqu'à une profondeur prédéterminée.
EP11171960.5A 2010-08-17 2011-06-29 Machine à laver de type tambour Not-in-force EP2423368B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010182036A JP2012040082A (ja) 2010-08-17 2010-08-17 ドラム式洗濯機
JP2010182037A JP2012040083A (ja) 2010-08-17 2010-08-17 ドラム式洗濯機

Publications (2)

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EP2423368A1 EP2423368A1 (fr) 2012-02-29
EP2423368B1 true EP2423368B1 (fr) 2016-08-24

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EP11171960.5A Not-in-force EP2423368B1 (fr) 2010-08-17 2011-06-29 Machine à laver de type tambour

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EP (1) EP2423368B1 (fr)
CN (1) CN102373602B (fr)

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CN108085927A (zh) * 2016-11-22 2018-05-29 青岛海尔洗衣机有限公司 一种洗衣机的筒的清洗控制方法及洗衣机
CN109440389A (zh) * 2018-12-27 2019-03-08 无锡小天鹅股份有限公司 衣物处理装置的控制方法、装置和衣物处理装置
CN109736046A (zh) * 2018-12-27 2019-05-10 无锡小天鹅股份有限公司 衣物处理装置的控制方法、装置和衣物处理装置

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EP2703546A1 (fr) 2012-08-29 2014-03-05 Electrolux Home Products Corporation N.V. Machine à laver le linge
EP2703547A1 (fr) * 2012-08-29 2014-03-05 Electrolux Home Products Corporation N.V. Machine à laver le linge
ITTO20121138A1 (it) * 2012-12-21 2014-06-22 Indesit Co Spa Metodo di controllo di una macchina lavabiancheria per l¿esecuzione di un ciclo general purpose
ITTO20121137A1 (it) * 2012-12-21 2014-06-22 Indesit Co Spa Metodo di controllo di una macchina lavabiancheria per l¿eliminazione di cattivi odori
CN105088640B (zh) * 2014-04-30 2018-03-16 无锡小天鹅股份有限公司 滚筒洗衣机及其洗涤控制方法
WO2015165242A1 (fr) * 2014-04-30 2015-11-05 无锡小天鹅股份有限公司 Machine à laver à tambour et son procédé de commande de lavage
WO2015165235A1 (fr) * 2014-04-30 2015-11-05 无锡小天鹅股份有限公司 Machine à laver à tambour et son procédé de commande de lavage
CN105088638B (zh) * 2014-04-30 2018-03-16 无锡小天鹅股份有限公司 滚筒洗衣机及其洗涤控制方法
CN105088616A (zh) * 2014-04-30 2015-11-25 无锡小天鹅股份有限公司 滚筒洗衣机及其洗涤控制方法
WO2015165240A1 (fr) * 2014-04-30 2015-11-05 无锡小天鹅股份有限公司 Machine à laver à tambour et son procédé de commande de lavage
CN108691156B (zh) 2017-04-12 2022-01-18 重庆海尔洗衣机有限公司 一种洗衣机
CN110344206B (zh) * 2018-04-04 2022-04-12 无锡小天鹅电器有限公司 洗衣机的控制方法及系统、计算机设备及存储介质
CN108660682B (zh) * 2018-07-06 2020-12-08 无锡小天鹅电器有限公司 洗衣机的控制方法、装置及洗衣机
CN111088632B (zh) * 2020-01-07 2021-05-07 珠海格力电器股份有限公司 一种洗涤设备及其控制方法及其洗涤方法

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CN108085927A (zh) * 2016-11-22 2018-05-29 青岛海尔洗衣机有限公司 一种洗衣机的筒的清洗控制方法及洗衣机
WO2018095343A1 (fr) * 2016-11-22 2018-05-31 青岛海尔洗衣机有限公司 Procédé de commande de nettoyage destiné à une cuve de lavage, et lave-linge
CN108085927B (zh) * 2016-11-22 2020-12-01 青岛海尔洗衣机有限公司 一种洗衣机的筒的清洗控制方法及洗衣机
CN109440389A (zh) * 2018-12-27 2019-03-08 无锡小天鹅股份有限公司 衣物处理装置的控制方法、装置和衣物处理装置
CN109736046A (zh) * 2018-12-27 2019-05-10 无锡小天鹅股份有限公司 衣物处理装置的控制方法、装置和衣物处理装置

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