EP2876194A1 - Machine de traitement de linge et son procédé de commande - Google Patents

Machine de traitement de linge et son procédé de commande Download PDF

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Publication number
EP2876194A1
EP2876194A1 EP13194226.0A EP13194226A EP2876194A1 EP 2876194 A1 EP2876194 A1 EP 2876194A1 EP 13194226 A EP13194226 A EP 13194226A EP 2876194 A1 EP2876194 A1 EP 2876194A1
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EP
European Patent Office
Prior art keywords
laundry treating
phase
duration
course
monitored
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.)
Granted
Application number
EP13194226.0A
Other languages
German (de)
English (en)
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EP2876194B1 (fr
Inventor
Paolo Driussi
Mirko Gasparini
Paolo Quattrin
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Electrolux Appliances AB
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Electrolux Appliances AB
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.)
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Publication date
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP13194226.0A priority Critical patent/EP2876194B1/fr
Priority to PCT/EP2014/074190 priority patent/WO2015074910A1/fr
Priority to AU2014352087A priority patent/AU2014352087B2/en
Publication of EP2876194A1 publication Critical patent/EP2876194A1/fr
Application granted granted Critical
Publication of EP2876194B1 publication Critical patent/EP2876194B1/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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/06—Timing 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/14—Time settings
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2105/50—Starting machine operation, e.g. delayed start or re-start after power cut
    • 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
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 

Definitions

  • the present invention concerns the field of laundry treating machines, such as laundry washing machines and/or laundry washing drying machines and/or laundry drying machines.
  • the present invention further relates to a control method of a laundry machine, which is designed to control the duration of the phases/steps of a selected laundry treating course so that the selected laundry treating course is completed at/in an end time established by an operator.
  • laundry treating machines such as laundry washing machines, i.e. laundry washing machines which wash and rinse laundry, or laundry washing and drying machines, i.e. laundry washing machines which can also dry laundry, or laundry drying machines, i.e. laundry machines which dries the laundry, is widespread.
  • laundry washing machines i.e. laundry washing machines which wash and rinse laundry
  • laundry washing and drying machines i.e. laundry washing machines which can also dry laundry
  • laundry drying machines i.e. laundry machines which dries the laundry
  • laundry treating machines are typically provided with a user control panel which comprises a laundry treating course select part to enable operator to select a laundry treating course (e.g. a washing course in a laundry washing machine, or a drying course in a laundry drying machine) among a plurality of laundry treating courses, each one comprising a plurality of treating phases;
  • the user control panel of some known laundry treating machines also comprises a finish course input part which allows operator to select an end time at which the selected laundry treating course has to be finished.
  • finish course input parts may be configured to enable operator to set a "finish-in" time corresponding to an interval/duration requested to complete the selected washing curse; for example the finish-in time may be set so that the washing course has to be finished in a certain interval of hours/minutes, e.g. in 8 hours and 5 minutes.
  • washing machines provided with the "finish-in” and/or “finish-at” function
  • the controller of the machine having in his memory the nominal duration of the selected washing course, automatically calculates (based on the nominal duration of the selected washing course) when the laundry treating course has to start in order to be finished according to finish-in time or finish-at time set by user, and automatically starts the laundry treating course accordingly.
  • duration of laundry treating courses is often different from the prefixed nominal duration due to several variable operating parameters which cause the duration of laundry treating phases to be varied. For this reason, since the controller of the machine starts the laundry treating course according to the finish-in time or finish-at time set by user and according to the nominal duration of the selected washing course, typically the laundry treating course does not actually end at the finish-in time or finish-at time set by user.
  • water supply duration of the water loading phase/wetting phase is heavily subjected to vary because it depends on many loading variables, e.g. kind of laundry, amount of laundry, etc. Also the duration of the spin phases in a laundry washing machine are subjected to be varied.
  • spin phases usually comprise a laundry unbalance detection step, in which, if a high level of unbalance is detected, a plurality of attempts to reach the spin speed is performed, alternated with redistribution phases in which drum is rotated in opposite rotation directions at low speed for changing laundry position inside the drum, so as to reduce the unbalance degree thereof. Therefore duration of the spin phase may heavily vary based on number/time required to perform balance attempts.
  • the known washing laundry machines have the drawback that the washing course may be completed before/after the finish-in or finish-at time set by the user.
  • Applicant conducted an in-depth study with the objective of providing a laundry treating machine which is able to complete a laundry treating course, and in particular, if the machine is a washing machine, a washing course exactly, at the finish-in or finish-at time set by the user, in particular regardless of a spin time and/or a water supply time.
  • a laundry treating machine comprising: an outer casing, a rotatable drum which is arranged in axially rotating manner inside the outer casing and is structured to receive the laundry to be treated, a laundry treating course select unit provided for an operator to select a laundry treating course to be performed; said laundry treating course having a nominal total course duration, and comprising a plurality of laundry treating phases/steps, each having a nominal value; a time input unit provided for an operator to input an end-time value, which is indicative of a time at which, or in which, the laundry treating course has to be ended; a start input unit provided for an operator to input a course start command; the laundry treating machine comprising a controller configured to: automatically start performing a selected laundry treating course based on a inputted course start command and an inputted end-time value; during the execution of said laundry treating course, determine a treating phase/step time information which is related to actual duration of at least one monitored laundry treating phase/step, and vary, with respect to its nominal value, the duration
  • the controller is further configured to: calculate the time difference between said actual duration of the monitored laundry treating phase/step, determined during a laundry treating course, and its nominal value; and adjust, with respect to its nominal value, the duration of at least a laundry treating phase/step to be performed following said monitored laundry treating phase/step, based on said calculated time difference.
  • the controller is further configured to reduce, with respect to its nominal value, the duration of a laundry treating phase/step to be performed following a monitored laundry treating phase/step, if the determined actual duration of said monitored laundry treating phase/step is greater than the nominal value of said monitored laundry treating phase/step.
  • the controller is further configured to skip at least a laundry treating phase/step to be performed following a monitored laundry treating phase, if the determined actual duration of said monitored laundry treating phase/step is greater than the nominal value of said monitored laundry treating phase/step.
  • the controller is further configured to extend, with respect to its nominal value, the duration of a laundry treating phase/step to be performed following a monitored laundry treating phase/step, if the determined actual duration of said monitored laundry treating phase/step is lower than the nominal value of said monitored laundry treating phase/step.
  • the extension of said duration of said laundry treating phase/step to be performed following said monitored laundry treating phase corresponds to the difference between said nominal value and said monitored actual duration of said monitored laundry treating phase.
  • the controller is further configured to add to a laundry treating course a prefixed laundry treating phase/step to be performed, if the actual duration of a laundry treating phase/step monitored during said laundry treating course is lower than the nominal value of said monitored laundry treating phase/step.
  • the controller is further configured to calculate the difference between a pre-set nominal total course duration and the actual duration of a monitored laundry treating phase/step so as to determine an actual course remaining time indicating the remaining time required to perform the laundry treating phases/steps following said laundry treating phase/step in order to complete the course; determine a theoretical course remaining time; compare the actual course remaining time with said theoretical course remaining time; adjust, with respect to its nominal value, the duration of at least a laundry treating phase/step following said monitored laundry treating phase based on results of said comparison.
  • the controller is further configured to calculate the time difference between the determined actual course remaining time and said theoretical course remaining time, and adjust, with respect to its nominal value, the duration of a laundry treating phase/step following the monitored laundry treating phase so as to compensate said calculated time difference.
  • the controller is further configured to determine treating phases/steps time information, which is indicative of actual time which a unbalance detection/correction operation/s of a spin phase spent to be completed, vary, with respect to its nominal value, the duration of one or more rinse phases following said spin phase, based on determined time information to cause the course to end at/in said end-time value set by operator.
  • the controller is further configured to calculate the time difference between the determined actual duration of said unbalance detection/correction operation/s of a spin phase and a prefixed nominal duration of unbalance detection/correction operation/s of a spin phase; and adjust, with respect to its nominal value the duration of a rinse phase following said spin phase based on said calculated time difference.
  • the present invention is also related to a control method of a laundry treating machine comprising: an outer casing; a rotatable drum which is arranged in axially rotating manner inside the outer casing and is structured to receive the laundry to be treated; a laundry treating course select unit provided for an operator to select a laundry treating course to be performed, the laundry treating course having a nominal total course time and comprising a plurality of laundry treating phases/steps, each having a nominal duration; a time input unit provided for an operator to input an end-time value, which is indicative of a time at which, or in which, the laundry treating course has to be ended; a start input unit provided for an operator to input a course start command.
  • the method comprises: automatically starting performing a selected laundry treating course (e.g.
  • a washing course based on an inputted course start command and an inputted end-time value; said method being characterized by comprising the following steps: during said laundry treating course, determining a treating phase/step time information which is related to actual duration of at least one monitored laundry treating phase/step; varying, with respect to its nominal duration, the duration of one or more laundry treating phases/steps to be performed following said at least one monitored laundry treating phase/steps, based on said determined treating phase/step time information, in such a way to cause said laundry treating course to end at/in said end-time value set by operator.
  • the method comprises: calculating a time difference between the actual duration of the monitored laundry treating phase/step determined during said laundry treating course, and a prefixed nominal duration of said monitored laundry treating phase/step, and adjusting, with respect to its nominal value, the duration of at least a laundry treating phase/step to be performed following said monitored laundry treating phase/step, based on said calculated time difference.
  • the method comprises reducing or extending, with respect to its nominal value, the duration of a laundry treating phase/step to be performed following a monitored laundry treating phase/step, if the determined actual duration of said monitored laundry treating phase/step is greater or respectively lower than the nominal duration of said monitored laundry treating phase/step.
  • the method comprises skipping or adding at least a laundry treating phase/step to be performed following a monitored laundry treating phase, if the determined actual duration of said monitored laundry treating phase/step is greater ore respectively lower than the nominal duration of said monitored laundry treating phase/step.
  • control method of the present invention has proved to be particularly advantageous when applied to a laundry washing machine, as described below. It should be understood that although the control method is described with reference to a laundry washing machine, other applications are contemplated. As can be appreciated, the present invention can be conveniently applied to other laundry treating machines, like for example laundry washing and drying machines (called also washer/driers) or laundry drying machines (called also drier).
  • this laundry treating machine is described; in this advantageous embodiment this laundry treating machine is a laundry washing machine 1.
  • the laundry washing machine 1 is a front loading laundry washing machine.
  • the present invention has proved to be particularly successful when applied to front loading laundry washing machines. It should in any case be understood that the present invention is not limited to this type of application. On the contrary, the present invention can be usefully applied to different types of laundry washing machines, for example top loading laundry washing machines or top loading laundry washing and drying machines, or top loading laundry drying machines.
  • the laundry washing machine 1 comprises an external casing or casing 2, in which a washing tub (not illustrated) is provided, that contains a rotatable perforated drum 3 (only partially illustrated), where the laundry to be washed can be loaded.
  • the washing tub and the drum 3 both have preferably a substantially cylindrical shape.
  • the casing 2 is provided with a loading/unloading door 4 which allows access to the washing tub and the drum 3.
  • the washing tub is preferably suspended in a floating manner inside the casing, advantageously by means of a number of coil springs and shock-absorbers (not illustrated).
  • the drum 3 may be advantageously rotated by an electric motor (not illustrated), which may preferably transmit the rotating motion to the shaft of the drum 3, advantageously by means of a belt/pulley system (not illustrated).
  • the motor can be directly associated with the shaft of the drum 3.
  • washing tub, the drum 3, the electric motor, belt/pulley system of the laundry washing machine 1 are well-known elements provided in well-known laundry machine and detailed description thereof will be omitted accordingly.
  • the laundry washing machine 1 further comprises a control unit 5 (illustrated schematically in Figure 1 with broken line), which is configured to control driving of the laundry washing machine 1.
  • the control unit 5 is configured to memorize a plurality of laundry washing courses (for example in a memory unit not illustrated) and controls driving of the laundry washing machine 1 in order to perform a laundry washing course selected by operator among the memorized laundry washing courses.
  • laundry treating course a course comprising a number of prefixed sequential laundry treating phases; each of these phase can comprise one or more sub-phases hereinafter called simply “laundry treating steps” , or steps.
  • Laundry treating phases of a laundry washing course may be characterised by several laundry washing parameter, such as nominal phase time or duration tc(i) (wherein i indicates the sequential order of the washing phase), water/air temperature, spin speed of the drum, amount of supplied water, etc..., which may be established/calculated based on the corresponding laundry washing course.
  • nominal phase time or duration tc(i) wherein i indicates the sequential order of the washing phase
  • water/air temperature water/air temperature
  • spin speed of the drum amount of supplied water, etc...
  • the main wash phase may comprise at least a loading/wetting step (loading water and detergent into the washing tub), preferably, although not necessarily a heating step, wherein the water loaded in the washing tub is heated, a maintenance step (tumbling the laundry for detergent action) and a dry and spin steps (draining water and spinning the drum with continuous drain).
  • a loading/wetting step loading water and detergent into the washing tub
  • a maintenance step tumbling the laundry for detergent action
  • a dry and spin steps draining water and spinning the drum with continuous drain.
  • a rinse phase may comprise one or more laundry washing steps, for example a water loading/wetting step (loading water into the washing tub), a rinse maintenance step (tumbling the laundry) a dry step, and spin step (draining water and spinning the drum with continuous drain).
  • a water loading/wetting step loading water into the washing tub
  • a rinse maintenance step tumbling the laundry
  • a dry step a dry step
  • spin step draining water and spinning the drum with continuous drain
  • the spin phase may comprise one or more laundry unbalance detection laundry washing steps, wherein it is detected whether laundry inside the drum 3 is unbalanced, one or more laundry correction step/s wherein drum 3 is alternately rotated in opposite directions at low speed to redistribute the laundry inside of the same, and one or more acceleration step/s, wherein, if a balanced status of the laundry has been detected, the drum 3 is accelerated so that its rotational speed reaches a prefixed spin speed to cause the laundry to be squeezed.
  • each laundry treating step has a respective calculated nominal step duration tp(i), and each laundry washing course has its nominal operation duration tn, which is the time required to perform the course as a whole when all the laundry treating phases are performed according to respective nominal phase duration tc(i).
  • laundry washing machine 1 is further provided with a control panel 6 which may comprise a washing course select part 7 configured to enable the operator to select a laundry washing course among a plurality of selectable prefixed laundry washing courses, and a start command select part 8 configured to enable the operator to input a start command to cause the selected laundry washing course to be started.
  • a washing course select part 7 configured to enable the operator to select a laundry washing course among a plurality of selectable prefixed laundry washing courses
  • start command select part 8 configured to enable the operator to input a start command to cause the selected laundry washing course to be started.
  • the control panel 6 further comprises a finish course select part 8 configured to enable the operator to input time information indicative of a request to end the selected washing course at a desired time (this function is called “finish-at”), or in a desired interval (this function is called “finish-in”).
  • finish course select part 8 may be advantageously configured so that when it is firstly activated by operator, it displays a prefixed duration (3 hour in the example illustrated in Figure 2 ) or a prefixed time hour/minute (2 hour and 20 minutes in the example illustrated in Figure 3 ) depending on the finish-in/at time function selected by operator.
  • finish course select part 8 may comprise at least a button 9 and at least a display 10, e.g. LED-display.
  • the button 9 may be configured to enable the user to set/vary/adjust the time value tu associated with the finish-in/at time function, whereas display 10 may be configured so as to be illuminated when operator pushes the button 9 and provides the time end value tu.
  • finish course select part 8 may be configured so that when operator presses the button 9, the end time value tu is increased by steps of a prefixed interval, e.g, 1 hour until 10 hours, then from 10 to 20 hours in steps of 2 hour increments. Pressing button 9, while maximum time/duration (for example 20h) is displayed, may deactivate the finish in/at time function, and the display 10 may provide the nominal washing course duration tn to operator.
  • finish course select part 8 may be further configured so that operator can also make a long key press on the button 9 to increase rapidly the end time value tu by hours.
  • control panel 6 is operatively connected with the control unit 5, and is configured to provide the control unit 5 with one or more signals comprising: the selected laundry washing course, the start command, information about the selected finish-in/at time function, and the end time value tu of the selected finish-in/at time function.
  • the control unit 5 may be a controller, e.g. a microprocessor or any similar electric/electronic control unit, configured to control the laundry treating machine 1 to perform the selected laundry washing course.
  • a washing delay time ⁇ ts i.e. how much time has to pass from the starting time t0 to when the washing course has to be actually started in order to finish in/at the end time tu, if the duration of the course is the nominal operation duration tn
  • control unit 5 may be configured to receive the current time by a real-time clock, calculate the time, e.g. hour, minute, that laundry treating course has to be started based on the starting time t0 and the current time, and starts performing the laundry treating when the current time corresponds to the calculated time.
  • a real-time clock calculates the time, e.g. hour, minute, that laundry treating course has to be started based on the starting time t0 and the current time, and starts performing the laundry treating when the current time corresponds to the calculated time.
  • the control unit 5 is further configured to determine time information related to (e.g. indicative of) the actual phase duration ta(i) which a "i-th" monitored laundry treating phase (hereinafter indicated with index (i)) spent to be completed; and adjust/vary, with respect of its nominal phase duration tc(i+1), the duration of a laundry treating phase (hereinafter indicated with index (i+1/n)) to be performed following the monitored laundry treating phase (i), based on the determined time information, so that the laundry washing course is completed at/in the end time value tu set by operator.
  • extending the duration of a laundry treating phase/step means extending the duration of the laundry treating phase/step with respect to its nominal value tc(i+1)/tp(i+1), while reducing the duration of the laundry treating phase/step means reducing the duration of the laundry treating phase/step with respect to its nominal value tc(i+1)/tp(i+1).
  • control unit 5 may be configured to determine the phase time difference ⁇ tc(i) between the actual phase duration ta(i) and the nominal phase duration tc(i) of the i-th monitored laundry treating phase i, and to compensate/adapt the duration of next laundry treating phase/s (i+1/n) to be performed, based on the determined phase time difference ⁇ tc(i).
  • the control unit 5 may reduce the duration of the next laundry treating phase (i+1) by the phase time difference ⁇ tc(i). On the contrary, if the phase time difference ⁇ tc(i) is negative, the control unit 5 may extend the duration of the next laundry treating phase (i+1) by adding the calculated phase time difference ⁇ tc(i) to nominal phase duration tc(i+1).
  • the control unit 5 reduces the duration of the first rinse cycle by the calculated phase time difference ⁇ tc(i).
  • control unit 5 may be configured to determine the step time difference ⁇ tp(i) between the actual step duration ta(i) of the laundry treating phase (i) and its calculated nominal step duration tp(i), and vary the duration of a laundry treating step of the laundry treating phase (i+1) following the monitored phase (i) based on the calculated step time difference ⁇ tp(i).
  • control unit 5 may reduce the duration of the water loading phase to be performed during the first rinse phase with respect to its nominal value tp(i+1).
  • control unit 5 may be configured to vary the duration of a laundry treating step (i) of the monitored phase based on the calculated phase time difference ⁇ tp(i). For example if the calculated actual step duration ta(i) of the water loading step of the first rinse phase (i) is greater than its nominal phase duration tp(i), the phase time difference ⁇ tp(i) is positive (meaning that the water loading step has been completed after the prefixed time), the control unit 5 may reduce the duration of the spin step to be performed during the first rinse phase (i).
  • control unit 5 may be configured to skip (no performing) a next laundry treating step (i+1) (following the monitored step (i)) or a next laundry treating phase (i+1) (following the monitored /phase (i)), if the step time difference ⁇ tp(i) or respectively phase time difference ⁇ tc(i) is positive. For example if the calculated actual step duration ta(i) of the water loading step in the first rinse phase (i) is greater than its relative nominal phase duration tp(i), the step time difference ⁇ tp(i) is positive (meaning that the water loading step has been completed after the prefixed time), the control unit 5 do not perform one rinse phase following the main wash phase.
  • control unit 5 may be configured to add to the laundry washing course a prefixed laundry treating phase or prefixed laundry treating step having preferably a duration equal to the phase time difference ⁇ tc(i) or the step time difference ⁇ tp(i), whether the time difference ⁇ tc(i) or respectively the step time difference ⁇ tp(i) are negative.
  • control unit 5 may add a rinse phase to the laundry washing course having a duration of the calculated phase time difference ⁇ tp(i).
  • Figure 4 illustrates a flow chart of operations performed by the washing machine 1 according to a first embodiment of the control method.
  • control unit 5 receives from the washing course select part 7, the laundry washing course selected by operator, and determines the nominal operation time tn based on the selected course.
  • control unit 5 receives information from the finish course select part 8, which are indicative of the finish-in or finish-at function to be performed, and the time value tu selected by operator. To the aim of simplifying the present description, without however limiting its scope, in the following example it will be considered that operator has selected finish-at function.
  • step 160 the control unit 5 determines both the nominal phase duration tc(i) of the laundry treating washing phase which is performing, the actual phase duration ta(i) required to complete the laundry treating washing phase. In other words in step 160 the control unit 5 calculate/measure by the real time clock or the timer the actual phase duration time ta(i) of the main washing phase.
  • step 170 the control unit 5 calculates the phase time difference ⁇ tc(i) between the actual duration ta(i) of the monitored phase and the nominal phase duration tc(i) thereof.
  • step 180 the control unit 5 checks whether the phase time difference ⁇ tc(i) is zero, and if the phase time difference ⁇ tc(i) is different of zero (output Yes from step 180), control unit 5 adjusts/varies with respect to its nominal phase duration tc(i+1), the duration of the next laundry treating washing phase (i+1) to be performed based on the phase time difference ⁇ tc(i) .
  • the cycle duration tc(i+1) of the laundry treating washing phase (i+1)following the monitored phase may be adjusted so as to compensate the calculated phase time difference ⁇ tc(i).
  • step 180 the control unit 5 could selectively skip the next laundry treating phase (i+1) or add a laundry treating phase (i+1) to the course, based on the phase time difference ⁇ tc(i). It should be further understood that the control method is not limited to the laundry treating phases but it may compensate, with respect ot its nominal value, the duration of laundry treating steps in the same manner as the laundry treating phases.
  • control unit 5 monitors the first washing phase corresponding to the main wash phase.
  • Figure 5 relates to a flow chart of a second embodiment of the control method of laundry treating machine 1 which is similar to the first embodiment illustrated in Figure 4 , wherein the steps will be numbered, as much as possible, with the same numbers indicating of corresponding steps of the first embodiment. More specifically the steps of the second embodiment of the method differ from the step of the first embodiment in that, during the performing of the laundry washing course, the control method measures the actual phase duration ta(i); calculates/estimates an actual course remaining time tte(i), i.e.
  • the actual time required to end the course based on the difference between the nominal course duration tn and the measured actual phase duration ta(i); determines a theoretical remaining duration/time tth(i); compare the actual remaining time tte(i) with the theoretical remaining time tth(i), and varies the duration of a next washing phase (i+1) to be performed based on the results of comparison.
  • control unit 5 performs the same operations disclosed in the first embodiment and therefore will not be further disclosed.
  • step 300 the control unit 5 determines actual course remaining time tte(i).
  • the actual course remaining time tte(i) is the real time required to complete all the washing phase (from i+1 to k being index of last cycle) of the laundry washing course in order to finish the latter according to the end time value tu set by operator.
  • Actual course remaining time tte(i) is calculated by calculating the difference between the nominal operation duration and the actual phase duration ta(i).
  • step 310 the control unit 5 determines a theoretical course remaining time tth(i).
  • the theoretical course remaining time tth(i) is a calculated theoretical time remaining to end the course so as to satisfy the end time value tu set by the operator.
  • step 330 the control unit 5 compares the actual course remaining time tte(i) with the theoretical course remaining time tth(i).
  • control unit 5 may extend the duration of the next washing phase (i+1) (step 340) by a value/time that compensates the ahead of the end of the washing phase that machine 1 has just performed.
  • the duration of the following phase (i+1) to be performed may be extended by the difference between the actual course remaining time tte(i) and the theoretical course remaining time tth.
  • control unit 5 may extend the duration of the next laundry treating phase (i+1) or of a laundry treating step comprised in the next washing phase (i+1) to be performed, or may perform the next washing phase/step (i+1) without varying its duration (which in this case corresponds to the nominal phase/step time ), or could perform an additional washing treating phase/step having a prefixed duration calculated to compensate the actual course remaining time tte(i) in order to finish the course at the end time value tu.
  • control unit 5 may reduce the duration of the next washing phase/step.
  • control unit 5 may reduce the duration of the next washing phase (step 360) by a value that compensates the delay of the end of the washing cycle (i) that machine 1 has just performed.
  • control unit 5 may reduce the duration of a prefixed washing step comprised in the next washing phase (i+1) to be performed, or could skip the next washing phase (i+1), or could skip one or more prefixed washing steps of the next washing phase (i+1/n).
  • Figure 6 relates to a flow chart of a third embodiment of the control method of laundry treating machine 1 which is similar to the first embodiment illustrated in Figure 4 , wherein the steps will be numbered, as much as possible, with the same numbers indicating of corresponding steps of the first embodiment. More specifically, the steps of the third embodiment of the method differ from the first embodiment in the fact that, during a spin phase of a washing cycle, the control unit 5 determines time information related to (e.g. indicative of) the actual duration ta(i) spent during the performed unbalance detection/correction phase-part/s.
  • time information related to (e.g. indicative of) the actual duration ta(i) spent during the performed unbalance detection/correction phase-part/s.
  • control unit 5 performs the same operation disclosed to explain the first embodiment that therefore will not be further disclosed.
  • the control unit 5 starts performing the first treating phase, i.e. the main washing phase.
  • the control unit 5 performs the spin phase (output Yes step 410), it determines time information indicative of the actual duration ta(i) of the unbalance detection/correction phase-part/s.
  • control unit 5 may be configured to: determine the actual duration ta(i), i.e. the time spent to perform the unbalance detection/correction phase, calculate a time difference Dts(i) between the determined actual duration ta(i) and a nominal duration tc(i) indicative of the nominal time to perform the unbalance detection/correction phase, and modify, with respect to its nominal value, the duration of a rinse phase following said spin phase (step 430).
  • control unit 5 may determine the actual duration ta(i) based on the number of correction attempts that machine 1 performed to start spinning operation, wherein the duration of each correction attempt is prefixed.
  • control unit 5 determines that the time of unbalance detection/correction phase has to be compensated and may reduce the duration of the next rinse phase (i+1).
  • control unit 5 determines that the time of unbalance detection/correction phase has to be compensated and may extend duration of the next rinse phase (i+1).
  • the present invention allows all the set objects to be achieved.
  • the present invention is able to complete a washing course exactly at the finish-in or finish-at time set by the user, regardless of a spin time and/or a water supply time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP13194226.0A 2013-11-25 2013-11-25 Machine de traitement de linge et son procédé de commande Active EP2876194B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13194226.0A EP2876194B1 (fr) 2013-11-25 2013-11-25 Machine de traitement de linge et son procédé de commande
PCT/EP2014/074190 WO2015074910A1 (fr) 2013-11-25 2014-11-10 Machine de traitement de linge et procédé de commande associé
AU2014352087A AU2014352087B2 (en) 2013-11-25 2014-11-10 Laundry treating machine and method for controlling thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13194226.0A EP2876194B1 (fr) 2013-11-25 2013-11-25 Machine de traitement de linge et son procédé de commande

Publications (2)

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EP2876194A1 true EP2876194A1 (fr) 2015-05-27
EP2876194B1 EP2876194B1 (fr) 2016-09-21

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EP (1) EP2876194B1 (fr)
AU (1) AU2014352087B2 (fr)
WO (1) WO2015074910A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US20180282929A1 (en) * 2017-03-29 2018-10-04 Haier Us Appliance Solutions, Inc. Timed wash cycle for a washing machine appliance
US20210062385A1 (en) * 2017-08-30 2021-03-04 Samsung Electronics Co., Ltd Electronic device and method for controlling the same

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US4241400A (en) * 1978-12-18 1980-12-23 General Electric Company Microprocessor based control circuit for washing appliances
DE4121015A1 (de) * 1991-06-26 1993-01-14 Licentia Gmbh Programmgesteuerter waeschetrockner
US5285545A (en) * 1992-10-30 1994-02-15 General Electric Company Electronic laundry control with fill time compensation
US5634227A (en) * 1995-02-16 1997-06-03 Daewoo Electronics Co., Ltd. Washing-time compensating method of a washing machine
GB2320587A (en) * 1996-12-19 1998-06-24 Bosch Siemens Hausgeraete Automatic starting of a household appliance
US20070283592A1 (en) * 2006-06-08 2007-12-13 American Dryer Corporation Method of drying clothing by reducing heat at end of drying cycle
WO2010128733A1 (fr) * 2009-05-04 2010-11-11 Lg Electronics Inc. Machine à laver et procédé de commande correspondant
US20120084995A1 (en) * 2010-09-14 2012-04-12 Vogel Peter S Energy efficient clothes dryer

Patent Citations (8)

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Publication number Priority date Publication date Assignee Title
US4241400A (en) * 1978-12-18 1980-12-23 General Electric Company Microprocessor based control circuit for washing appliances
DE4121015A1 (de) * 1991-06-26 1993-01-14 Licentia Gmbh Programmgesteuerter waeschetrockner
US5285545A (en) * 1992-10-30 1994-02-15 General Electric Company Electronic laundry control with fill time compensation
US5634227A (en) * 1995-02-16 1997-06-03 Daewoo Electronics Co., Ltd. Washing-time compensating method of a washing machine
GB2320587A (en) * 1996-12-19 1998-06-24 Bosch Siemens Hausgeraete Automatic starting of a household appliance
US20070283592A1 (en) * 2006-06-08 2007-12-13 American Dryer Corporation Method of drying clothing by reducing heat at end of drying cycle
WO2010128733A1 (fr) * 2009-05-04 2010-11-11 Lg Electronics Inc. Machine à laver et procédé de commande correspondant
US20120084995A1 (en) * 2010-09-14 2012-04-12 Vogel Peter S Energy efficient clothes dryer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180282929A1 (en) * 2017-03-29 2018-10-04 Haier Us Appliance Solutions, Inc. Timed wash cycle for a washing machine appliance
US10570544B2 (en) 2017-03-29 2020-02-25 Haier Us Appliance Solutions, Inc. Timed wash cycle for a washing machine appliance
US20210062385A1 (en) * 2017-08-30 2021-03-04 Samsung Electronics Co., Ltd Electronic device and method for controlling the same
US11492744B2 (en) * 2017-08-30 2022-11-08 Samsung Electronics Co., Ltd. Electronic device and method for controlling the same

Also Published As

Publication number Publication date
AU2014352087A1 (en) 2016-04-14
AU2014352087B2 (en) 2018-09-13
WO2015074910A1 (fr) 2015-05-28
EP2876194B1 (fr) 2016-09-21

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