EP3385436B1 - Procédé de drainage d'eau de machine à laver - Google Patents

Procédé de drainage d'eau de machine à laver Download PDF

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Publication number
EP3385436B1
EP3385436B1 EP16869844.7A EP16869844A EP3385436B1 EP 3385436 B1 EP3385436 B1 EP 3385436B1 EP 16869844 A EP16869844 A EP 16869844A EP 3385436 B1 EP3385436 B1 EP 3385436B1
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EP
European Patent Office
Prior art keywords
rotation speed
draining
spin
speed
inner container
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.)
Active
Application number
EP16869844.7A
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German (de)
English (en)
Other versions
EP3385436A1 (fr
EP3385436A4 (fr
EP3385436C0 (fr
Inventor
Wenwei Li
Jun Wu
Haibo Wang
Yubao Wang
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.)
Qingdao Haier Drum Washing Machine Co Ltd
Original Assignee
Qingdao Haier Drum Washing Machine Co Ltd
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Publication of EP3385436A1 publication Critical patent/EP3385436A1/fr
Publication of EP3385436A4 publication Critical patent/EP3385436A4/fr
Application granted granted Critical
Publication of EP3385436C0 publication Critical patent/EP3385436C0/fr
Publication of EP3385436B1 publication Critical patent/EP3385436B1/fr
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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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • 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
    • D06F37/30—Driving arrangements 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • 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
    • D06F39/083—Liquid discharge or recirculation 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
    • D06F21/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement 
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2105/48—Drum speed
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • 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
    • D06F2105/54—Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
    • 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
    • D06F29/00—Combinations of a washing machine with other separate apparatus in a common frame or the like, e.g. with rinsing apparatus
    • 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
    • D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
    • 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
    • D06F33/42—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining

Definitions

  • the invention belongs to the technical field of laundry treating appliances, and in particular relates to a water draining method of washing machine.
  • a drum washing machine typically includes an outer container and a drum provided within.
  • the drum washing machine further includes a door which mounted on the front panel of a cabinet defining a housing within which the first outer container and the drum reside. Good sealing performance between the door and the first outer container has to be ensured because the inside pressure is required to maintain at a comparatively high value during the entire operation.
  • the drum washing machine has an upper draining system, which is called an upper-drain type washing machine, specifically indicating a first draining conduit provided including an upward section.
  • a draining pump provided on the first draining conduit is used for enabling water within the draining conduit to flow through the upward section and then drain from the draining conduit.
  • Document EP 0 711 860 A1 discloses a water draining method according to the preamble of independent claim 1.
  • the user of drum washing machine is inclined to put in excessive treating chemistry manually due to lack of information about the appropriate dosing of detergent for different laundry loads, laundry items made of various textiles, or uneven dirty level. Even though the laundry items or laundry loads are unchanged, the correct dosage of detergent of different manufacturers is changeable. Too much detergent may result in excess bubbles and foam created and maintained in the first outer container, which is also an auxiliary effect of the good sealing performance between the door and the first outer container. Those bubbles may further intrigue an increase of pressure within the first outer container and finally result in overflow. Especially in the spin cycle, the drum rotates at a high speed, and the quantity of bubbles created may boost. Excessive detergent may further cause over residual and leaves lingering odor of detergent on laundered clothes.
  • the present invention provides a water draining method, with which much more suds formed could be drained from the washer during drain cycle so as to reinforce the rinse effect and prevent overflow.
  • a water draining method of washing machine wherein the washing machine is an upper-drain type and further including a first outer container configured to receive washing water, a first inner container provided within the first outer container, a motor configured to drive the first inner container rotating, a first draining system, which is communicated with the bottom of the first outer container, including a first draining conduit and a draining pump, comprising: initiating a drain cycle, during which keeping the draining pump working at an alternate operation mode until the liquid level within the first outer container decreasing to a preset draining level; and initiating a spin cycle, during which controlling the motor to drive the first inner container rotating and spinning while keeping the draining pump working at an alternate operation mode, whereby the spin cycle further comprises a low-speed spin, the low-speed spin comprising:
  • the alternate operation mode comprises: keeping the draining pump running 10 to 20 seconds and pausing 2 to 10 seconds alternately.
  • the alternate operation mode comprises: keeping the draining pump running 12 to 18 seconds and pausing 4 to 6 seconds alternately.
  • the determination that whether the liquid level within the first outer container reaches the preset draining level is fulfilled by the following steps: detecting the liquid level within the first outer container, comparing the detected result with the preset draining level; if the liquid level detected is higher than the set value, the draining pump continues to work at the alternate operation mode; if the liquid level detected meets or decreasing to lower than the set value, the draining pump is being stopped.
  • the load balancing cycle further comprising: detecting real-time rotation speed values of the driveshaft of the motor at a plurality of points respectively; comparing those detected speed values with set values corresponding to each of them; and determining the fact that the laundry load is evenly distributed within the first inner container if all of the differences between the detected speed values and the set values belong to a preset range and terminating the load balancing cycle; or determining the fact that the laundry load is unevenly distributed within the first inner container if any one of the difference value is beyond the set range and resuming the load balancing cycle.
  • the distributed rotation speed is 90 to 120 rpm.
  • the distributed rotation speed is 90 to 100 rpm.
  • the spin cycle further comprising a low-speed spin, the low-speed spin comprising:
  • the first rotation speed is 350 to 450 rpm.
  • the alternate operation mode in the low-speed spin comprises: keeping the draining pump running 10 to 20 seconds and pausing 2 to 10 seconds alternately.
  • the alternate operation mode in the low-speed spin comprises: keeping the draining pump running 8 to 12 seconds and pausing 2 to 6 seconds alternately.
  • the period of supplying water in the de-foaming mode is 30 to 60 seconds.
  • the alternate operation mode in the de-foaming mode comprises: keeping the draining pump running 8 to 12 seconds and pausing 2 to 6 seconds alternately.
  • the distributed rotation speed is 90 to100 rpm.
  • step b the occurrence of the over-suds condition is determined by comparing the liquid level within the first outer container with a preset foaming liquid level; if the liquid level within the first outer container detected is higher than or meets the set foaming liquid level, the over-suds condition exists in the first outer container.
  • the rotation speed of the inner container which is driven by the motor, reduces to the predetermined distributed rotation speed as the low-speed spin ends.
  • the spin cycle further comprising a high-speed spin, the high-speed spin comprising:
  • the second rotation speed is 500 to 1000 rpm.
  • the spin cycle further comprising a timing spin followed the high-speed spin, wherein the timing spin comprising: increasing the rotation speed of the first inner container which is driven by the motor to a third rotation speed and spinning while keeping the draining pump working at the alternate operation mode; stopping the motor and shutting down a first draining valve as the time expires.
  • the third rotation speed is 1100 to 1200 rpm.
  • the draining system includes a first draining valve and the first draining valve is being maintaining open as the draining method being executed.
  • the water draining method may be utilized in a dual-drum washing machine further including a second washing system, wherein the second washing system including a second outer container, a second draining conduit communicated with the second outer container, and a second draining valve provided on the second draining conduit.
  • the first draining conduit further includes a bottom section, which is communicated with the first outer container and provided with a first draining valve and the draining pump, an upward section and a free section.
  • the second draining conduit connected with the portion of the bottom section between the first draining valve and the first draining conduit.
  • the water draining method further comprises the following steps: initiating an occupation detecting cycle preceding the drain cycle, during which sensing whether the first draining valve or the draining pump is working for another washing system; if either of them is being occupied, remaining the current status.
  • washing water within the first outer container flows into the first draining conduit and then is being pumped to drain out through the upward section of the first draining conduit as the draining pump working, and on the other hand, washing water within the upward section of the first draining conduit flows back by gravity as the draining pump stopping.
  • washing water within the upward section of the first draining conduit alternately flows forwards and backwards. The alternate movement of washing water could easily bring more suds out of the washer so as to improve the rinse effect, also could prevent the overflow of bubbles.
  • a first embodiment of the invention can be utilized with a drum washing machine with an upper draining system as illustrated in FIG.1 , and the sequence of steps of the water draining method is depicted in FIG.2 .
  • the drum washing machine includes a cabinet 1, a first outer container 2, a first inner container, a motor and a first draining system communicated with the bottom of the first outer container 2, wherein the draining system includes a first draining conduit 3 and a draining pump 4.
  • the first inner container is provided within the first outer container 2 defining a chamber for receiving a laundry load for treatment. Washing water resides within the first outer container 2.
  • the first draining conduit 3 includes a bottom section 31, an upward section 32 and a free section 33, wherein the bottom section 31 is communicated with the bottom of the first outer container 2, and the upward section 32 is fixedly arranged on the cabinet 1.
  • the draining pump 4 is arranged on the bottom section 31 to pump washing water flowing through the upward section 32.
  • the motor is fixed on the first outer container 2 to drive the first inner container rotating.
  • FIG.2 Illustrated in FIG.2 is a flow chart of the water draining method, which defines a operation includes a drain cycle and a spin cycle, wherein the drain cycle comprises: keeping the draining pump working at an alternate operation mode until the liquid level within the first outer container decreasing to a preset draining level; and the spin cycle comprises: controlling the motor to drive the first inner container rotating and spinning while keeping the draining pump working at an alternate operation mode; the alternate operation mode comprising: running and pausing the draining pump 4 alternately.
  • washing water within the first outer container 2 flows into the first draining conduit 3 and then is being pumped to drain out through the upward section 32 thereof as the draining pump working, and on the other hand, washing water within the upward section 32 of the first draining conduit 3 flows back by gravity as the draining pump stopping. In this way, washing water within the upward section of the first draining conduit 3 alternately flows forwards and backwards. The alternate movement of washing water could easily bring more suds out of the washer so as to improve the rinse effect, also could prevent the overflow of bubbles.
  • the first inner container remains stationary as the motor stopping, the liquid level in the first outer container 2 decreases with a constant speed as water draining; in the meanwhile, washing water within the upward section alternately flows back against the washing water left in the washer to make it be tumbled, so part of suds on the surface of the washing water left could be drawn into the first draining conduit 3 and then be drained out from the washer through the upward section as the draining pump working.
  • washing water could further ensure the normal operation of the draining pump 4 because air within the draining pump 4 could be pushed out under the force exerted by the washing water flowing back intermittently, so as to avoid the failure of the draining pump caused by the problem that air is introduced into the inner cavity of the draining pump as only little water being left in the washer.
  • bubbles and foam on the liquid surface could flows to the free section 33 in the first place and then be drained out, followed with the washing water, so if the draining pump 4 stops, the washing water within the upward section may flow back to the bottom section but suds is discharged from the washer separately; accordingly, washing water could flow back to drawn more suds again in this alternate way.
  • the alternate operation of the draining pump 4 comprises: keeping running 10 to 20 seconds and then pausing 2 to 10 seconds, preferably the running time is set in a range from 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set as 15s and the pause is set as 5s.
  • the determination that whether the liquid level within the first outer container 2 reaches the preset draining level is fulfilled by the following steps: detecting the liquid level within the first outer container 2, comparing the detected result with the preset draining level; if the liquid level detected is higher than the set value, the draining pump continues to work at the alternate mode; if the liquid level detected meets or decreases to lower than the set value, the draining pump is being stopped and it marks the end of the drain cycle.
  • the preset draining level could be flexibly set according to various types of washing machine. Typically, the preset draining level could be established corresponding to the liquid level of the bottom of the first outer container 2, that is, if the liquid level detected decreasing to the point corresponding to the bottom of the first outer container 2, the drain cycle ends and the next cycle is followed.
  • the drain cycle is followed by a load balancing cycle.
  • the load balancing cycle includes: controlling the motor to drive the first inner container spinning at a set distributed rotation speed; detecting real-time operation speeds of the driveshaft of the motor at a plurality of points respectively, and then comparing those detected speed values with set values corresponding to each of them; if all of the differences between the detected speed values and the set values belong to a set range, it could be determined that the laundry load is evenly distributed within the first inner container and the balancing cycle ends; if any one of the difference value is beyond the set range, it could be determined that the laundry load is unevenly distributed within the first inner container and the balancing cycle continues.
  • the set distributed rotation speed is preferably in a range from 90 to 120 rpm (rotation/minute), that is to say, the rotation speed of the first inner container is set in a range from 90 to 120 rpm, more preferably 90 to 100 rpm, and more preferably at 95 rpm.
  • the distribution of laundry load could be adjusted by controlling the motor to drive the first inner container rotating at a set distributed rotation speed, so as to avoid the excessive tumble caused by uneven distribution in the spin cycle; further the distribution status could be determined by detecting the change of driveshaft speed.
  • the spin cycle includes a low-speed spin and a high-speed spin, wherein the low-speed spin comprises:
  • the de-foaming mode comprises: reducing the rotation speed of the first inner container to the distributed rotation speed, and sequentially supplying fresh water into the washer in a period while keeping the draining pump working at the alternate operation mode.
  • the occurrence of the over-suds condition could be determined by the liquid level detected because it is subject to a substantial increase with increment of bubbles and foam which is caused by the fact that, during the low-speed spin, much of the water with detergent solution could be removed from the saturated clothes as the first inner container is being driven by the motor to rotate at a comparatively high speed.
  • the occurrence of the over-suds is determined by comparing the detected liquid level within the first outer container with a set foaming liquid level; if the liquid level within the first outer container is higher than or meets the set foaming liquid level, the over-suds exists in the first outer container; wherein the set foaming liquid level is preferable set as the liquid level corresponding to the bottom of the first inner container.
  • the increment of suds caused by rotation could be effectively contained to prevent the overflow of bubbles; it is also a protective measure because the development of high levels of suds could produce an excessive load on the motor and may damage it.
  • clothes within the first inner container could contact and be saturated with fresh water supplied and rinsed, and part of the suds on the clothes could be washed and drained out by a washing pump. This operation can effectively enable the level of suds to diminish and can advantageously reinforce the rinse effect without wasting fresh water merely contained few bubbles, and additionally, the quantity of suds capable of being created further could be reduced to avoid the occurrence of over-suds again.
  • the alternate operation mode of the draining pump is set as running 12 to 18 seconds and pausing 2 to 6 seconds during the de-foaming mode; preferably setting the running time as 10 seconds and the pausing time as 5 seconds respectively.
  • the shortening of the periods in comparison with those in the step a could be advantageous of draining more suds created out of the washer to make the defoaming effect better.
  • the period of water supply is set as 30 to 60 seconds.
  • the defoaming mode comprises: controlling the motor to drive the first inner container rotating at a reduced speed, namely the distributed rotation speed, and sequentially supplying fresh water into the washer in a period while keeping the draining pump working at the alternate operation mode.
  • a high suds level condition may still exist but could not be determined by the liquid level detected, under this condition, the first inner container is driven by the motor to rotate at a high speed in the step c, and therefore water within the clothes residing in the first inner container could be squeezed out with suds. Those suds may prevent the rotation of the first inner container, and the resistance may grow as the speed increases. In order to overcome the resistance, the motor is required to output much more power than in normal operation. As the power of the motor reaches its maximum capacity, the increment of the rotation speed could not be continued so that the real-time rotation speed may not reach the set rotation speed.
  • the procedure for determining whether the maximum rotation speed reaches the first rotation speed is being incorporated is to address this problem. This procedure could further so as to prevent the over-suds and overflow of suds, and further avoid the damage to the motor caused by excessive load produced by the high levels of suds.
  • the rotation speed of the first inner container is reduced to the distributed rotation speed during the low-speed spin, and then the high-speed spin is initiated; wherein the high-speed spin comprises the following steps:
  • the range of the second rotation speed is preferably from 800 to 1200 rpm, and a more preferable value is 1000 rpm.
  • the alternate operation of the draining pump 4 is set to be keeping running 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set in a time of 15s and the pause is 5s.
  • a further increase of the rotation speed of the first inner container driven by the motor allows water in clothes to be squeezed out continually, and the alternate operation of the draining pump 4 could drain out more suds.
  • Step B determining whether an over-suds condition is occurred in the washer by detecting whether the rotation speed reaches the second rotation in a set period of time; if an over-suds condition does not occur, the high-speed spin ends and the motor is being stopped; if an over-suds condition occurs, entering a de-foaming mode and back to the Step A sequentially.
  • the de-foaming mode comprises: reducing the rotation speed of the first inner container to the distributed rotation speed, and sequentially supplying fresh water into the washer in a period while keeping the draining pump working at the alternate operation mode.
  • step B it is preferably to determine whether an over-suds condition is occurred in the washer by detecting whether the rotation speed increases to 1000 rpm from 400 rpm in a set time period , 3 to 8 seconds.
  • the end of the high-speed spin mode indicates the end of the drain cycle.
  • the over-suds could be accurately sensed relying on various detection methods applied in different stages and the overflow could be effectively prevented.
  • a second embodiment of the invention can be utilized with a drum washing machine with an upper draining system as illustrated in FIG. 3 , and the sequence of steps of the water draining method is depicted in FIG. 4 .
  • the modifications made to the second embodiment are: on one hand, the high-speed spin is followed by a timing spin during the spin cycle, and on the other hand, the draining conduit is further provided with a draining valve.
  • Other features of the first embodiment could also be utilized as those in the second embodiment.
  • the washing machine includes a cabinet 1, a first outer container 2, a first inner container, a motor and a first draining system communicated with the bottom of the first outer container 2, wherein the first draining system includes a first draining conduit 3, a draining pump 4 and a first draining valve 5.
  • the first inner container is provided within the first outer container 2 defining a chamber for receiving a laundry load for treatment. Washing water resides within the first outer container 2.
  • the first draining conduit 3 includes a bottom section 31, an upward section 32 and a free section 33, wherein the bottom section 31 is communicated with the bottom of the first outer container 2, and the upward section 32 is fixedly arranged on the cabinet 1.
  • the draining pump 4 and the first draining valve 5 is arranged on the bottom section 31 to pump washing water flowing through the upward section 32.
  • the motor is fixed on the first outer container 2 to drive the first inner container rotating.
  • FIG. 4 Illustrated in FIG. 4 is a flow chart of the water draining method, which defines an operation includes a drain cycle and a spin cycle, wherein the first draining valve 5 is open before the drain cycle in advance and closed as the draining method expires.
  • the drain cycle comprises: running and pausing the draining pump 4 alternately until the liquid level within the first outer container 2 decreasing to a preset draining level
  • the spin cycle comprises: controlling the motor to rotate and spin while keeping the draining pump 4 running and pausing alternately.
  • washing water within the first outer container 2 flows into the first draining conduit 3 and then is being pumped to drain out through the upward section 32 of the first draining conduit 3 as the draining pump working, and on the other hand, washing water within the upward section 32 of the first draining conduit 3 flows back by gravity as the draining pump stopping. In this way, washing water within the upward section of the first draining conduit 3 alternately flows forwards and backwards. The alternate movement of washing water could easily bring more suds out of the washer so as to improve the rinse effect, also could prevent the overflow of bubbles.
  • the first inner container remains stationary as the motor stopping, the liquid level in the first outer container 2 decreasing with a stable speed as the washing water draining; in the meanwhile, washing water within the upward section alternately flows back against the washing water left in the washer to make it be tumbled, so part of suds on the surface of the washing water left could be drawn into the first draining conduit 3 and then be drained out from the washer through the upward section as the draining pump working.
  • washing water could further ensure the normal operation of the draining pump 4 because air within the draining pump 4 could be pushed out under the force of the washing water flowing back intermittently, so as to avoid the failure of the draining pump caused by the problem that air is introduced into the inner cavity of the draining pump as only little water being left in the washer.
  • bubbles and foam on the liquid surface could flows to the free section 33 in the first place and then be drained out, followed with the washing water, so if the draining pump 4 stops, the washing water within the upward section may flow back to the bottom section but suds is discharged from the washer; accordingly, washing water could flow back to drawn more suds again in an alternate way.
  • the alternate operation of the draining pump 4 is set to be keeping running 10 to 20 seconds and then pausing 2 to 10 seconds, preferably the running time is set in a range from 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set as 15s and the pause is set as 5s.
  • the determination that whether the liquid level within the first outer container 2 reaches the preset draining level is fulfilled by the following steps: detecting the liquid level within the first outer container 2, comparing the detected result with the preset draining level; if the liquid level detected is higher than the set value, the draining pump continues to work at the alternate mode; if the liquid level detected meets or decreasing to lower than the set value, the draining pump is being stopped and it marks the end of the drain cycle.
  • the preset draining level could be flexibly set according to various modes of washing machine. Typically, the preset draining level could be established as the liquid level of the bottom of the first outer container 2, that is, if the liquid level detected decreasing to the point corresponding to the bottom of the first outer container 2, the drain cycle ends and the next cycle is followed.
  • the drain cycle is followed by a load balancing cycle.
  • the load balancing cycle includes: controlling the motor to drive the first inner container spinning at a set distributed rotation speed; detecting real-time operation speeds of the driveshaft of the motor at a plurality of points respectively, and then comparing those detected speed values with set values corresponding to each of them; if all of the differences between the detected speed values and the set values belong to a set range, it could be determined that the laundry load is evenly distributed within the first inner container and the balancing cycle ends; if any one of the difference value is beyond the set range, it could be determined that the laundry load is unevenly distributed within the first inner container and the balancing cycle continues.
  • the set distributed rotation speed is preferably in a range from 90 to 120 rpm (rotation/minute), that is to say, the rotation speed of the first inner container is set in a range from 90 to 120 rpm, more preferably 93 to 100 rpm, and more preferably at 95 rpm.
  • the distribution of laundry load could be adjusted by controlling the motor to drive the first inner container rotating at a set distributed rotation speed, so as to avoid the excessive tumble caused by uneven distribution in the spin cycle; further the distribution status could be determined by detecting the change of driveshaft speed.
  • the spin cycle includes a low-speed spin, a high-speed spin and a timing spin, wherein the low-speed spin comprises:
  • the range of the first rotation speed is preferably from 350 to 450 rpm, and a more preferable value is 400 rpm. That is to say, followed by the load balancing cycle, the speed of the motor is subject to an increase from the distributed rotation speed to the first rotation speed; in the low-speed spin, the alternate operation of the draining pump 4 is set to be keeping running 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set in a time of 15s and the pause is 5s.
  • step b determining whether an over-suds condition occurs in the washer by detecting the liquid level within the first outer container; if the over-suds condition occurs, then entering into a step c followed, if the over-suds condition does not occur, entering into a de-foaming mode and back to the step a sequentially.
  • the defoaming mode comprises: reducing the rotation speed of the first inner container to the distributed rotation speed, and sequentially supplying fresh water into the washer in a period while keeping the draining pump working at the alternate operation mode.
  • the occurrence of the over-suds condition could be determined by the liquid level detected because it is subject to a substantial increase with increment of bubbles and foam which is caused by the fact that, during the low-speed spin, much of the water with detergent solution could be removed from the saturated clothes as the first inner container is being driven by the motor to rotate at a comparatively high speed.
  • the occurrence of the over-suds is determined by comparing the liquid level within the first outer container with a set foaming liquid level; if the liquid level within the first outer container is higher than or meets the set foaming liquid level, the over-suds exists in the first outer container; wherein the set foaming liquid level is preferable set as the liquid level corresponding to the bottom of the first inner container.
  • the increment of suds caused by rotation could be effectively contained to prevent the overflow of bubbles; it is also a protective measure because the development of high levels of suds could produce an excessive load on the motor and may damage it.
  • clothes within the first inner container could contact and be saturated with fresh water supplied and rinsed, and part of the suds on the clothes could be washed and drained out by a washing pump. This operation can effectively enable the level of suds to diminish and can advantageously reinforce the rinse effect without wasting fresh water merely contained few bubbles, and additionally, the quantity of suds capable of being created further could be reduced to avoid the occurrence of over-suds again.
  • the alternate operation mode of the draining pump is set as running 12 to 18 seconds and pausing 2 to 6 seconds during the defoaming mode; preferably setting the running time as 10 seconds and the pausing time as 5 seconds respectively.
  • the shortening of the periods in comparison with those in the step a could be advantageous of draining more suds created out of the washer to make the defoaming effect better.
  • the period of water supply is set as 30 to 60 seconds.
  • the defoaming mode comprises: controlling the motor to drive the first inner container rotating at a reduced speed, namely the distributed rotation speed, and sequentially supplying fresh water into the washer by a period while keeping the draining pump working at the alternate operation mode.
  • a high suds level condition may still exist but could not be determined by the liquid level detected, under this condition, the first inner container is driven by the motor to rotate at a high speed in step c, and therefore water within the clothes residing in the first inner container could be squeezed out with suds. Those suds may prevent the rotation of the first inner container, and the resistance may grow as the speed increases. In order to overcome the resistance, the motor is required to output much more power than in normal operation. As the power of the motor reaches its maximum, the increment of the rotation speed could not be continued so that the real-time rotation speed may not reach the set rotation speed. The procedure for determining whether the maximum rotation speed reaches the first rotation speed is being incorporated is to address this problem. This procedure could further so as to prevent the over-suds and overflow of suds, and further avoid the damage to the motor caused by excessive load produced by the high levels of suds.
  • the rotation speed of the first inner container is reduced to the distributed rotation speed during the low-speed spin, and then the high-speed spin is initiated; wherein the high-speed spin comprises the following steps:
  • the range of the second rotation speed is preferably from 800 to 1200 rpm, and a more preferable value is 1000 rpm.
  • the alternate operation of the draining pump 4 is set to be keeping running 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set in a time of 15s and the pause is 5s.
  • a further increase of the rotation speed of the first inner container driven by the motor allows water in clothes to be squeezed out continually, and the alternate operation of the draining pump 4 could drain out more suds.
  • Step B determining whether an over-suds condition is occurred in the washer by detecting whether the rotation speed reaches the second rotation in a set period of time; if an over-suds condition does not occur, the high-speed spin ends and the motor is being stopped; if an over-suds condition occurs, entering a de-foaming mode and back to the Step A sequentially.
  • the de-foaming mode comprises: reducing the rotation speed of the first inner container to the distributed rotation speed, and sequentially supplying fresh water into the washer in a period while keeping the draining pump working at the alternate operation mode.
  • step B it is preferably to determine whether an over-suds condition is occurred in the washer by detecting whether the rotation speed increases to 1000 rpm from 400 rpm in a set time period , 3 to 8 seconds.
  • the high-speed spin is followed by a timing spin, wherein the timing spin comprises: running the motor and increasing the rotation speed to a third rotation speed for spinning while keeping the alternation operation of the draining pump 4 until the time expires, then stopping the motor and shutting down the draining pump 4 and the first draining valve 5.
  • the water draining method ends.
  • the range of the third rotation speed is preferably from 1100 to 1200 rpm, namely the rotation speed of the first inner container is 1100 to 1200 rpm, and a more preferable value is 1200 rpm;
  • the alternation operation of the draining pump 4 is set to be keeping running 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set in a time of 15s and the pause is 5s.
  • a third embodiment of the invention can be utilized with a washing machine with a dual-drum washing machine as illustrated in FIG. 5 , wherein a first draining conduit and a draining pump is provided for both of the first inner containers.
  • the sequence of steps of the water draining method is depicted in FIG. 6 .
  • the modification made in the third embodiment mainly is the washing machine is a dual-drum washing machine, and other features of the second embodiment could be utilized as those in the third embodiment.
  • the washing machine is a dual-drum washing machine including a first washing system and a second washing system
  • the first washing system includes a cabinet 1, a first outer container 2, a first inner container, a motor and a first draining system communicated with the bottom of the first outer container 2, wherein the first draining system includes a first draining conduit 3, a draining pump 4 and a first draining valve 5
  • the first inner container is provided within the first outer container 2 defining a chamber for receiving a laundry load for treatment, and washing water resides within the first outer container 2
  • the first draining conduit 3 includes a bottom section 31, an upward section 32 and a free section 33, wherein the bottom section 31 is communicated with the bottom of the first outer container 2, and the upward section 32 is fixedly arranged on the cabinet 1
  • the draining pump 4 is arranged in the bottom section 31 to pump washing water flowing through the upward section 32
  • the motor is fixed on the first outer container 2 to drive the first inner container rotating.
  • the second washing system includes a second outer container 6 and a second draining conduit 7 communicated with the second outer container 6, a second draining valve 8 is arranged on the second draining conduit which is connected to the portion of the bottom section 31 between the first draining valve 5 and the draining pump 4; with this configuration, the upward section 32 and the free section 33 of the first draining conduit 3 and the draining pump 4 could service for both of the first washing system and the second washing system. But it is also easy to understand that the first washing system and the second washing system could not drain washing water in the meanwhile.
  • the first washing system as a main washing system in the dual-drum washer utilized.
  • the sequence of steps of the water draining method is depicted in FIG. 6 , which defines an operation includes an occupation detecting cycle, a drain cycle and a spin cycle.
  • the occupation detecting cycle comprises: sensing whether the draining pump 4 is working for draining washing water of the second washing system or not; if the draining pump 4 is occupied, remaining the current status; if the draining pump 4 is not occupied, the first draining valve 5 is being opened in advance before the drain cycle.
  • the drain cycle comprises: running and pausing the draining pump 4 alternately until the liquid level within the first outer container 2 decreasing to a preset draining level
  • the spin cycle comprises: controlling the motor to rotate and spin while running and pausing the draining pump 4 alternately.
  • washing water within the first outer container 2 flows into the first draining conduit 3 and then is being pumped to drain out through the upward section 32 of the first draining conduit 3 as the draining pump working, and on the other hand, washing water within the upward section 32 of the first draining conduit 3 flows back by gravity as the draining pump stopping.
  • washing water within the upward section of the first draining conduit 3 alternately flows forwards and backwards. The alternate movement of washing water could easily bring more suds out of the washer so as to improve the rinse effect, also could prevent the overflow of bubbles.
  • the first inner container remains stationary as the motor stopping, the liquid level in the first outer container 2 decreasing with a stable speed as the washing water draining; in the meanwhile, washing water within the upward section alternately flows back against the washing water left in the washer to make it be tumbled, so part of suds on the surface of the washing water left could be drawn into the first draining conduit 3 and then be drained out from the washer through the upward section as the draining pump working.
  • washing water could further ensure the normal operation of the draining pump 4 because air within the draining pump 4 could be pushed out under the force of the washing water flowing back intermittently, so as to avoid the failure of the draining pump caused by the problem that air is introduced into the inner cavity of the draining pump as only little water being left in the washer.
  • bubbles and foam on the liquid surface could flows to the free section 33 in the first place and then be drained out, followed with the washing water, so if the draining pump 4 stops, the washing water within the upward section may flow back to the bottom section but suds is discharged from the washer; accordingly, washing water could flow back to drawn more suds again in an alternate way.
  • the alternate operation of the draining pump 4 is set to be keeping running 10 to 20 seconds and then pausing 2 to 10 seconds, preferably the running time is set in a range from 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set as 15s and the pause is set as 5s.
  • the determination that whether the liquid level within the first outer container 2 reaches the preset draining level is fulfilled by the following steps: detecting the liquid level within the first outer container 2, comparing the detected result with the preset draining level; if the liquid level detected is higher than the set value, the draining pump continues to work at the alternate mode; if the liquid level detected meets or decreasing to lower than the set value, the draining pump is being stopped and it marks the end of the drain cycle.
  • the preset draining level could be flexibly set according to various modes of washing machine. Typically, the preset draining level could be established as the liquid level of the bottom of the first outer container 2, that is, if the liquid level detected decreasing to the point corresponding to the bottom of the first outer container 2, the drain cycle ends and the next cycle is followed.
  • the drain cycle is followed by a load balancing cycle.
  • the load balancing cycle includes: controlling the motor to drive the first inner container spinning at a set distributed rotation speed; detecting real-time operation speeds of the driveshaft of the motor at a plurality of points respectively, and then comparing those detected speed values with set values corresponding to each of them; if all of the differences between the detected speed values and the set values belong to a set range, it could be determined that the laundry load is evenly distributed within the first inner container and the balancing cycle ends; if any one of the difference value is beyond the set range, it could be determined that the laundry load is unevenly distributed within the first inner container and the balancing cycle continues.
  • the set distributed rotation speed is preferably in a range from 90 to 100 rpm (rotation/minute), that is to say, the rotation speed of the first inner container is set in a range from 90 to 100 rpm, more preferably 93 to 95 rpm, and more preferably at 95 rpm.
  • the distribution of laundry load could be adjusted by controlling the motor to drive the first inner container rotating at a set distributed rotation speed, so as to avoid the excessive tumble caused by uneven distribution in the spin cycle; further the distribution status could be determined by detecting the change of driveshaft speed.
  • the spin cycle includes a low-speed spin, a high-speed spin and a timing spin, wherein the low-speed spin comprises:
  • the de-foaming mode comprises: reducing the rotation speed of the first inner container to the distributed rotation speed, and sequentially supplying fresh water into the washer in a period while keeping the draining pump working at the alternate operation mode.
  • the occurrence of the over-suds condition could be determined by the liquid level detected because it is subject to a substantial increase with increment of bubbles and foam which is caused by the fact that, during the low-speed spin, much of the water with detergent solution could be removed from the saturated clothes as the first inner container is being driven by the motor to rotate at a comparatively high speed.
  • the occurrence of the over-suds is determined by comparing the liquid level within the first outer container with a preset foaming liquid level; if the liquid level detected within the first outer container is higher than or meets the set foaming liquid level, the over-suds exists in the first outer container; wherein the set foaming liquid level is preferable set as the liquid level corresponding to the bottom of the first inner container.
  • the increment of suds caused by rotation could be effectively contained to prevent the overflow of bubbles; it is also a protective measure because the development of high levels of suds could produce an excessive load on the motor and may damage it.
  • clothes within the first inner container could contact and be saturated with fresh water supplied and rinsed, and part of the suds on the clothes could be washed and drained out by a washing pump. This operation can effectively enable the level of suds to diminish and can advantageously reinforce the rinse effect without wasting fresh water merely contained few bubbles, and additionally, the quantity of suds capable of being created further could be reduced to avoid the occurrence of over-suds again.
  • the alternate operation mode of the draining pump is set as running 12 to 18 seconds and pausing 2 to 6 seconds during the de-foaming mode; preferably setting the running time as 10 seconds and the pausing time as 5 seconds respectively.
  • the shortening of the periods in comparison with those in the step a could be advantageous of draining more suds created out of the washer to make the de-foaming effect better.
  • the period of water supply is set as 30 to 60 seconds.
  • the de-foaming mode comprises: controlling the motor to drive the first inner container rotating at a reduced speed, namely the distributed rotation speed, and sequentially supplying fresh water into the washer by a period while keeping the draining pump working at the alternate operation mode.
  • a high suds level condition may still exist but could not be determined by the liquid level detected, under this condition, the first inner container is driven by the motor to rotate at a high speed in step c, and therefore water within the clothes residing in the first inner container could be squeezed out with suds. Those suds may prevent the rotation of the first inner container, and the resistance may grow as the speed increases. In order to overcome the resistance, the motor is required to output much more power than in normal operation. As the power of the motor reaches its maximum, the increment of the rotation speed could not be continued so that the real-time rotation speed may not reach the set rotation speed. The procedure for determining whether the maximum rotation speed reaches the first rotation speed is being incorporated is to address this problem. This procedure could further so as to prevent the over-suds and overflow of suds, and further avoid the damage to the motor caused by excessive load produced by the high levels of suds.
  • the rotation speed of the first inner container is reduced to the distributed rotation speed during the low-speed spin, and then the high-speed spin is initiated; wherein the high-speed spin comprises the following steps:
  • the range of the second rotation speed is preferably from 800 to 1200 rpm, and a more preferable value is 1000 rpm.
  • the alternate operation of the draining pump 4 is set to be keeping running 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set in a time of 15s and the pause is 5s.
  • a further increase of the rotation speed of the first inner container driven by the motor allows water in clothes to be squeezed out continually, and the alternate operation of the draining pump 4 could drain out more suds.
  • Step B determining whether an over-suds condition is occurred in the washer by detecting whether the rotation speed reaches the second rotation speed in a set period of time; if an over-suds condition does not occur, the high-speed spin ends and the motor is being stopped; if an over-suds condition occurs, entering a deforming mode and back to the Step A sequentially.
  • the de-foaming mode comprises: reducing the rotation speed of the first inner container to the distributed rotation speed, and sequentially supplying fresh water into the washer in a period while keeping the draining pump working at the alternate operation mode.
  • step B it is preferably to determine whether an over-suds condition is occurred in the washer by detecting whether the rotation speed increases to 1000 rpm from 400 rpm in a set time period , 3 to 8 seconds.
  • the high-speed spin is followed by a timing spin, wherein the timing spin comprises: running the motor and increasing the rotation speed to a third rotation speed for spinning while keeping the alternation operation of the draining pump 4 until the time expires, then stopping the motor and shutting down the draining pump 4 and the first draining valve 5.
  • the water draining method ends.
  • the range of the third rotation speed is preferably from 1100 to 1200 rpm, namely the rotation speed of the first inner container is 1100 to 1200 rpm, and a more preferable value is 1200 rpm;
  • the alternation operation of the draining pump 4 is set to be keeping running 12 to 18 seconds and the pause is set in a range from 4 to 6 seconds, more preferably, the running time is set in a time of 15s and the pause is 5s.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (13)

  1. Procédé pour vidanger l'eau d'une machine à laver, dans lequel la machine à laver est du type à vidange par le haut et comprend en outre un premier conteneur extérieur (2) configuré pour recevoir de l'eau de lavage, un premier conteneur intérieur situé dans le premier conteneur extérieur, un moteur configuré pour entraîner en rotation le premier conteneur intérieur, un premier système de vidange, qui se trouve en communication avec le fond du premier conteneur extérieur, comportant un premier conduit de vidange (3) et une pompe de vidange (4), comprenant :
    le lancement d'un cycle de vidange, au cours duquel on maintient la pompe de vidange (4) en fonctionnement selon un mode de fonctionnement alterné jusqu'à ce que le niveau de liquide à l'intérieur du premier conteneur extérieur (2) diminue jusqu'à un niveau de vidange prédéfini, le mode de fonctionnement alterné consistant à faire fonctionner la pompe de vidange (4) et à la mettre en pause de manière alternée ; et
    le lancement d'un cycle d'essorage, au cours duquel on commande le moteur pour entraîner le premier conteneur intérieur qui tourne et essore tout en maintenant la pompe de vidange (4) en fonctionnement selon un mode de fonctionnement alterné,
    caractérisé par le fait que le cycle d'essorage comprend en outre un essorage à basse vitesse, l'essorage à basse vitesse comprenant :
    a. commander le moteur pour entraîner le premier conteneur intérieur qui tourne et essore à une vitesse de rotation croissante tout en maintenant la pompe de vidange (4) en fonctionnement selon le mode de fonctionnement alterné ; la vitesse de rotation la plus élevée pouvant être atteinte lors de l'essorage à basse vitesse étant fixée à une première vitesse de rotation ;
    b. déterminer si une condition de moussage excessif se produit dans la machine à laver en détectant le niveau de liquide dans le premier conteneur extérieur (2) ; si la condition de moussage excessif se produit, on passe à une étape c suivante ; si la condition de moussage excessif ne se produit pas, on passe à un mode de dé-moussage puis on revient à l'étape a de façon séquentielle ; le mode de dé-moussage comprenant : réduire la vitesse de rotation du premier conteneur intérieur jusqu'à la vitesse de rotation distribuée, et introduire séquentiellement de l'eau fraîche dans la machine à laver pendant une période tout en maintenant la pompe de vidange (4) en fonctionnement selon le mode de fonctionnement alterné,
    c. détecter la vitesse de rotation du premier conteneur intérieur et déterminer si elle atteint ou non la première vitesse de rotation ; si la vitesse de rotation atteint la première vitesse de rotation, l'essorage à basse vitesse se termine ; si la vitesse de rotation est inférieure à la première vitesse de rotation, on exécute le mode de dé-moussage et on revient à l'étape a de manière séquentielle.
  2. Procédé pour vidanger l'eau selon la revendication 1, dans lequel le mode de fonctionnement alterné comprend l'étape de faire fonctionner la pompe de vidange (4) pendant 10 à 20 secondes et de la mettre en pause de 2 à 10 secondes en alternance.
  3. Procédé pour vidanger l'eau selon la revendication 1, comprenant en outre
    lancer un cycle d'équilibrage de la charge avant le cycle d'essorage, au cours duquel on commande le moteur pour entraîner en rotation le premier conteneur intérieur à une vitesse de rotation distribuée définie et au cours duquel on détermine si la charge est uniformément répartie en se basant sur les valeurs de vitesse de rotation détectées.
  4. Procédé pour vidanger l'eau selon la revendication 3, dans lequel le cycle d'équilibrage de la charge comprend en outre :
    détecter les valeurs de vitesse de rotation en temps réel de l'arbre d'entraînement du moteur en plusieurs points respectivement ;
    comparer ces valeurs de vitesse détectées aux valeurs de consigne correspondant à chacun d'entre eux ; et
    déterminer le fait que la charge de linge est uniformément répartie dans le premier conteneur intérieur si toutes les différences entre les valeurs de vitesse détectées et les valeurs de consigne appartiennent à une plage prédéfinie et mettre fin au cycle d'équilibrage de la charge ; ou déterminer le fait que la charge de linge est inégalement répartie dans le premier conteneur intérieur si l'une des valeurs de différence est supérieure à la plage prédéfinie et recommencer le cycle d'équilibrage de la charge.
  5. Procédé pour vidanger l'eau selon l'une quelconque des revendications 1 à 4, dans lequel le mode de fonctionnement alterné dans l'essorage à basse vitesse consiste à maintenir la pompe de vidange (4) en marche pendant 8 à 12 secondes et à la mettre en pause de 2 à 6 secondes en alternance.
  6. Procédé pour vidanger l'eau selon l'une quelconque des revendications 1 à 4, dans lequel l'occurrence de la condition de moussage excessif est déterminée en comparant le niveau de liquide dans le premier conteneur extérieur (2) avec un niveau de liquide moussant prédéfini ; si le niveau de liquide détecté dans le premier conteneur extérieur (2) est supérieur ou égal au niveau de liquide moussant prédéfini, la condition de moussage excessif existe dans le premier conteneur extérieur (2).
  7. Procédé pour vidanger l'eau selon la revendication 4, dans lequel le cycle d'essorage comprend en outre un essorage à grande vitesse, l'essorage à grande vitesse comprenant :
    A. commander le moteur pour entraîner en rotation le premier conteneur intérieur qui essore à une vitesse de rotation croissante tout en maintenant la pompe de vidange (4) en fonctionnement selon le mode de fonctionnement alterné ; la vitesse de rotation la plus élevée pouvant être atteinte lors de l'essorage à grande vitesse étant fixée à une deuxième vitesse de rotation ;
    B. déterminer si une condition de moussage excessif se produit dans la machine à laver en détectant si la vitesse de rotation atteint la deuxième vitesse de rotation dans une période de temps définie ; si une condition de moussage excessif ne se produit pas, on termine l'essorage à grande vitesse et on arrête le moteur ; si une condition de moussage excessif se produit, on entre dans un mode de dé-moussage et on revient à l'étape A séquentiellement ; dans lequel le mode de dé-moussage comprend : réduire la vitesse de rotation du premier conteneur intérieur jusqu'à la vitesse de rotation distribuée, et introduire séquentiellement de l'eau fraîche dans la machine à laver pendant une période tout en maintenant la pompe de vidange (4) en fonctionnement selon le mode de fonctionnement alterné.
  8. Procédé pour vidanger l'eau selon la revendication 7, comprenant en outre un essorage chronométré après l'essorage à grande vitesse, l'essorage chronométré comprenant : augmenter la vitesse de rotation du premier conteneur intérieur qui est entraîné par le moteur jusqu'à une troisième vitesse de rotation et essorer tout en maintenant la pompe de vidange (4) en fonctionnement selon le mode de fonctionnement alterné ; arrêter le moteur et fermer une première vanne de vidange (5) à l'expiration du temps.
  9. Procédé pour vidanger l'eau selon l'une quelconque des revendications 1 à 8, qui est utilisé dans une machine à laver à double tambour comprenant en outre un deuxième système de lavage, dans lequel le deuxième système de lavage comprend un deuxième conteneur extérieur (6), un deuxième conduit de vidange (7) communiquant avec le deuxième conteneur extérieur (6), une deuxième vanne de vidange (8) prévue dans le deuxième conduit de vidange (7) ; le premier conduit de vidange (3) comprenant en outre un tronçon inférieur (31) qui communique avec le premier conteneur extérieur (2) et est pourvu d'une première vanne de vidange (5) et de la pompe de vidange (4), un tronçon ascendant (32) et un tronçon libre (33), et le second conduit de vidange (7) étant relié à la partie du tronçon inférieur (31) située entre la première vanne de vidange (5) et le premier conduit de vidange (3) ;
    comprenant en outre
    initier un cycle de détection d'occupation précédant le cycle de vidange, au cours duquel on détecte si la pompe de vidange (4) est en cours de fonctionnement pour un autre système de lavage ; si elle est occupée, on conserve l'état actuel.
  10. Procédé pour vidanger l'eau selon la revendication 1, dans lequel la première vitesse de rotation est comprise dans la plage de 350 à 450 tours/minute, de préférence à 400 tours/minute
  11. Procédé pour vidanger l'eau selon la revendication 1, dans lequel la vitesse de rotation distribuée est comprise dans une plage de 90 à 120 tours/minute, de préférence dans une plage de 90 à 100 tours/minute, plus préférentiellement à 95 tours/minute.
  12. Procédé pour vidanger l'eau selon la revendication 7, dans lequel la deuxième vitesse de rotation est comprise dans une plage de 500 à 1000 tours/minute, ou dans une plage de 800 à 1200 tours/minute, de préférence à 1000 tours/minute.
  13. Procédé pour vidanger l'eau selon la revendication 8, dans lequel la troisième vitesse de rotation est de 1100 à 1200 tours/minute, de préférence à 1200 tours/minute.
EP16869844.7A 2015-12-02 2016-10-31 Procédé de drainage d'eau de machine à laver Active EP3385436B1 (fr)

Applications Claiming Priority (2)

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CN201510871185.8A CN106811916B (zh) 2015-12-02 2015-12-02 一种洗衣机的排水方法
PCT/CN2016/103968 WO2017092534A1 (fr) 2015-12-02 2016-10-31 Procédé de drainage d'eau de machine à laver

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EP3385436A1 EP3385436A1 (fr) 2018-10-10
EP3385436A4 EP3385436A4 (fr) 2019-07-03
EP3385436C0 EP3385436C0 (fr) 2023-12-13
EP3385436B1 true EP3385436B1 (fr) 2023-12-13

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US (1) US20190062982A1 (fr)
EP (1) EP3385436B1 (fr)
JP (1) JP2019500936A (fr)
CN (1) CN106811916B (fr)
AU (1) AU2016364098B2 (fr)
WO (1) WO2017092534A1 (fr)

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CN109112767B (zh) * 2017-06-23 2022-04-01 合肥海尔滚筒洗衣机有限公司 洗衣机洗涤毛巾类织物的方法及全自动洗衣机
JP7232819B2 (ja) * 2018-04-06 2023-03-03 シャープ株式会社 洗濯機
CN110396797B (zh) * 2018-04-24 2022-03-18 青岛海尔洗涤电器有限公司 一种衣物处理装置排水控制方法及多筒衣物处理装置
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KR102522303B1 (ko) * 2018-07-06 2023-04-14 엘지전자 주식회사 세탁물 처리기기
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EP3385436A4 (fr) 2019-07-03
US20190062982A1 (en) 2019-02-28
WO2017092534A1 (fr) 2017-06-08
EP3385436C0 (fr) 2023-12-13
CN106811916A (zh) 2017-06-09
JP2019500936A (ja) 2019-01-17
CN106811916B (zh) 2020-10-09
AU2016364098A1 (en) 2018-07-12
AU2016364098B2 (en) 2019-07-18

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