EP3507409B1 - Appareil d'entretien du linge doté d'une commande - Google Patents

Appareil d'entretien du linge doté d'une commande Download PDF

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Publication number
EP3507409B1
EP3507409B1 EP17755453.2A EP17755453A EP3507409B1 EP 3507409 B1 EP3507409 B1 EP 3507409B1 EP 17755453 A EP17755453 A EP 17755453A EP 3507409 B1 EP3507409 B1 EP 3507409B1
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EP
European Patent Office
Prior art keywords
pump
power value
drain line
electrical
laundry care
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
EP17755453.2A
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German (de)
English (en)
Other versions
EP3507409A1 (fr
Inventor
Kevin Hahn
Rainer Jurmann
Dirk MISCHKE
Raymond Römer
Jörg SKRIPPEK
Stefan Wetzel
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL17755453T priority Critical patent/PL3507409T3/pl
Publication of EP3507409A1 publication Critical patent/EP3507409A1/fr
Application granted granted Critical
Publication of EP3507409B1 publication Critical patent/EP3507409B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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
    • D06F2103/14—Supply, recirculation or draining of washing liquid
    • 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
    • D06F2105/08—Draining of washing liquids
    • 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
    • D06F39/081—Safety arrangements for preventing water damage
    • D06F39/082—Safety arrangements for preventing water damage detecting faulty draining operations, e.g. filter blockage, faulty pump

Definitions

  • the present invention relates to a laundry care device with a control.
  • washing liquid column After pumping out washing liquid from the tub of a laundry care device by means of a pump, a remainder of the pumped out washing liquid remains in the drain line, the rest of the pumped out washing liquid forming a column of washing liquid in the discharge line on the pressure side of the pump, provided the pump is still driven. Above a certain pressure at the pump nozzle, the washing liquid column lifts out of the pump pressure chamber, so that the washing liquid column can flow back through the gravity acting on it in the drain line and penetrate into the suction chamber of the pump.
  • the pump operated with a low pump capacity when the wash liquid column is lifted off again accelerates the backwashed wash liquid a wash liquid column builds up in the discharge line on the pressure side of the pump, which subsequently flows back into the discharge line due to gravity.
  • a vibrating washing liquid column is obtained in the drain line.
  • the vibrating washing liquid column vibrates in the drain line at your design-related natural frequency.
  • the oscillation of the washing liquid column in the drain line can result in an unpleasant, oscillating noise state and, in addition, a strong motor load can occur for the pump due to the oscillating flow of the washing liquid.
  • the effect of the washing liquid column swinging up occurs with certain constellations of pump shape, flow behavior and installation conditions or delivery head of the laundry care device.
  • EP 2 933 365 A1 discloses a method for regulating a circulation pump system, which in particular includes regulating the volume flow in order to avoid drawing in a water-air mixture.
  • DE 10 2010 042 491 A1 discloses a pump device for a domestic appliance, the pump device in particular comprising a drive motor and a circuit arrangement for operating the drive motor.
  • DE 10 2010 042 494 A1 discloses a method for switching off a single-phase synchronous motor in a domestic appliance, an AC supply voltage being applied to a winding of a stator of the single-phase synchronous motor.
  • the object according to the invention is achieved by a laundry care device with a tub for receiving washing liquid, an outlet opening arranged on the tub for discharging washing liquid, the outlet opening being fluidly connected to an outlet line, the outlet line being connected to a pump, the Pump is configured to pump washing liquid through the drain opening and through the drain line out of the laundry care device, a power detection element for detecting an electrical power value of the pump, and with a controller for controlling the pump, the controller being designed during a first period of time of the drain pipe vibrating washing liquid column to determine when the electric power value detected by the power detection element exceeds an electric vibration reference power value, wherein the controller is configured during a after the first time period, the second time period to reduce a pump power of the pump to a reduced pump power, wherein when the pump is operated with the reduced pump power, the electrical power value detected by the power detection element falls below the electrical vibration reference power value in order to reduce the vibration of the washing liquid column in the drain line, and the control is designed during a third time period following the second time period
  • control enables an effective reduction or elimination of the vibrating washing liquid column in the drain line. This reduces noise when pumping out.
  • the controller determines the presence of a vibrating wash liquid column in the drain line when the electrical power value detected by the power detection element exceeds an electrical vibration reference power value.
  • the washing liquid column vibrating in the drain line with a certain frequency results in an electrical power value of the pump oscillating in a corresponding frequency, e.g. the amplitude of an electrical current applied to the pump. If the detected electrical power value exceeds the electrical vibration reference power value, the controller can determine that there is a vibrating washing liquid column in the drain line.
  • the control reduces the pump power of the pump to the reduced pump power, the electrical power value detected by the power detection element when the pump is operated with the reduced pump power falling below the electrical vibration reference power value, so that elimination or at least a significant reduction in the washing liquid column vibrating in the drain line can be ensured during the second period.
  • the controller determines an inflow of washing liquid into the drain line if the electrical power value detected by the power detection element exceeds the electrical inflow reference power value. After the second period, the vibrating wash liquid column in the drain line was reduced sufficiently. If washing liquid subsequently enters the drain line from the tub during the third time period, the electrical power value of the pump detected by the power detection element can exceed the inflow reference power value. As a result, the control can recognize that sufficient washing liquid is again present in the drain line in order to ensure that the washing liquid is effectively pumped out of the laundry care device without an oscillating washing liquid column occurring in the drain line. For this purpose, the control system can again increase the pumping capacity of the pump sufficiently. In the event that an oscillating wash liquid column occurs again in the drain line during the further pumping process, the controller can repeat the first, second and third time period.
  • the laundry care device ensures early detection of a lack of washing liquid inflow to the pump, and an oscillating condition of the washing liquid column in the drain line and the associated noise emission and a high energy requirement can be avoided without having to carry out constructive, design changes in the laundry care device.
  • the lifespan of the components can also be extended.
  • the pump is operated by a pump motor, which in particular comprises a permanently excited pump motor or an electronically commutated pump motor.
  • a reduction in the pump output of the pump is achieved in particular by reducing the pump speed of the pump.
  • the occurrence of an oscillating column of washing liquid in the drain line does not occur in every laundry care device, but rather occurs when the pump speed of the pump exceeds a predetermined oscillation speed.
  • the oscillation speed is in turn dependent on the height of the wash liquid column in the drain line, the height of the wash liquid column in the drain line again depending on the height of a drain hose, which is on the outside of the laundry care device is appropriate. If the pump speed of the pump falls below a predetermined vibration speed, no vibrating wash liquid column occurs in the drain line. When the pump speed of the pump exceeds a predetermined vibration speed, an oscillating column of washing liquid occurs in the drain line, and the vibration of the column of washing liquid is reduced according to the embodiment of the present invention.
  • a laundry care device is understood to mean a device which is used for laundry care, such as a washing machine or washer-dryer.
  • a laundry care device is understood to mean a household laundry care device. So a laundry care device, which is used in the context of housekeeping, and with which laundry is treated in normal household quantities.
  • control is designed to increase the pumping power of the pump to a nominal pumping power during a fourth time period following the third time period, in order to convey washing liquid through the drain opening from the tub and through the drain line from the laundry care device .
  • the pump power again in the subsequent fourth time period of the pump can be increased to the nominal pump capacity in order to convey the washing liquid out of the tub and through the drain line from the laundry care device without any noise or mechanical disturbances arising from a washing liquid column vibrating in the drain line occurring during the fourth time period.
  • the electrical power value of the pump detected by the power detection element comprises an electrical power, an electrical current strength, in particular an amplitude of the electrical current strength, or a torque-generating current of the pump.
  • control is designed to determine the column of washing liquid vibrating in the drain line if the electrical power value detected by the power detection element exceeds the electrical vibration reference power value x times during the first time segment, wherein x is greater than a frequency threshold value within a time interval is.
  • the control system can be used to determine a column of washing liquid vibrating in the drain line with a particularly high degree of reliability.
  • the frequency threshold value is defined in relation to a predetermined time interval and thus ensures that the detected electrical power value exceeds the electrical vibration reference power value sufficiently often to be able to determine the presence of the vibrating washing liquid column with sufficient certainty.
  • the time interval and the frequency threshold value correlating with the time interval can be variably determined depending on certain program parameters.
  • the electrical vibration reference power value is a constant or a variable electrical vibration reference power value, the variable electrical vibration reference power value being detectable by the power detection element if the washing liquid present in the drain line does not have an oscillating washing liquid column.
  • the controller can easily determine, often the detected, at a constant electrical vibration reference power value electrical power value exceeds the electrical vibration reference power value.
  • a variable vibration reference power value can be detected by the power detection element itself if the washing liquid present in the drain line does not have an oscillating washing liquid column. In the case of a variable vibration reference power value, design-related variations in the vibration reference power value are thus taken into account, and the controller can determine with greater accuracy whether the deviation of the detected electrical power value from the variable vibration reference power value is due to a washing liquid column vibrating in the drain line.
  • variable electrical vibration reference power value corresponds to a mean variable electrical vibration reference power value, the mean variable electrical vibration reference power value being determinable on the basis of mean values of the variable electrical vibration reference power value, the mean values being determinable in each case during a mean value interval.
  • the controller can determine in a particularly reliable manner whether there is a vibrating washing liquid column in the drain line.
  • control is designed to determine a frequency at a maximum amplitude of the electrical power value during the first time period, and the control is designed to determine the specific frequency and the maximum amplitude of the electrical power value with reference frequency values and reference amplitudes within a To compare the reference period to determine the column of washing liquid vibrating in the drain line.
  • the controller is designed to deactivate the pump during the second time period, or the controller is designed to reduce the pumping power of the pump below a minimum pumping power threshold value in the second time period in order to reduce the vibration of the washing liquid column in the drain line to reduce.
  • the controller is designed to determine a renewed inflow of washing liquid into the drain line if the electrical power value detected by the power detection element exceeds the electrical inflow reference power value y times during the third time segment, y being greater than a further frequency threshold value is within a further time interval.
  • the control can determine with a particularly high degree of reliability that washing liquid flows again into the drain line during the third time period.
  • the further frequency threshold value is defined in relation to a further predetermined time interval and thus ensures that the detected electrical power value exceeds the electrical inflow reference power value enough times to be able to determine the inflow of washing liquid with sufficient certainty.
  • the further time interval and the further frequency threshold value which correlates with the further time interval can be variably defined as a function of certain program parameters.
  • control is designed to increase the reduced pumping capacity of the pump during the third time period, and the control is designed to determine the inflow of washing liquid into the drain line if, during the third time period, the one detected by the power detection element electrical power value exceeds the inflow reference power value.
  • the controller is designed to operate the pump with the reduced pump power during the third time period, and the controller is designed to determine the inflow of washing liquid into the drain line if, during the third time period, by the power detection element detected electrical power value exceeds the inflow reference power value.
  • the laundry care device has a pressure detection unit for detecting a pressure of the washing liquid in the drain line between the drain opening and the pump, and the controller is designed to determine the inflow of washing liquid into the drain line if during the third period the pressure detected by the pressure detection unit exceeds a reference pressure threshold.
  • the technical advantage is thereby achieved that the pressure detection unit of the control system enables an effective and direct possibility of detecting the inflow of washing liquid into the drain line.
  • the drain line has an inlet section which fluidically connects the drain opening to the pump, and the drain line has a pumping section which connects the pump to an outlet opening on a device housing of the laundry care device, the oscillating washing liquid column during the first period occurs in the pumping section.
  • washing liquid can be effectively sucked in by the pump through the suction-side inlet section of the drain line, and that the suctioned washing liquid can be effectively pumped out by the pump through the pressure-side pumping section.
  • the pump has a pump-out pressure chamber for pumping out washing liquid, the pump-out pressure chamber being fluidly connected to the drain line, and the pump has a pump-over pressure chamber for pumping around washing liquid, the pump-back pressure chamber being fluidically connected to a pump-over pressure line, in which the pump line is fluidly connected to an inlet nozzle of the laundry care device.
  • the object is achieved by a method for pumping washing liquid in a laundry care device, the laundry care device comprising a tub for receiving washing liquid, an outlet opening arranged on the tub for discharging washing liquid, the outlet opening being fluidically connected to an outlet line wherein the drain line is connected to a pump, the pump being configured to pump washing liquid through the drain opening and through the drain line out of the laundry care device, has a power detection element for detecting an electrical power value of the pump and a controller for controlling the pump, wherein the method comprises the following steps: determining a column of washing liquid vibrating in the drain line during a first period when the electrical power value detected by the power detection element is an electrical vibration gs reference power value, reducing a pump power of the pump to a reduced pump power during a second time period following the first time period, wherein when the pump is operated with the reduced pump power, the electrical power value detected by the power detection element falls below the electrical vibration reference power value in order to reduce the vibration of the Drain line to reduce existing washer fluid column
  • the method comprises increasing a pump output of the pump to a nominal pump output.
  • Fig. 1 shows a schematic view of a general laundry care appliance 100, such as a washing machine.
  • the laundry care device 100 comprises a induction bowl 101, into which washing care substance, such as, for example, detergent, can be filled.
  • the laundry care device 100 comprises a device door 103 for loading the laundry care device 100 with laundry and comprises a device housing 105.
  • Fig. 2 shows a schematic view of a laundry care device with a pump connected to a drain line.
  • the laundry care device 100 comprises a device housing 105, a laundry drum 107 arranged in the device housing 105 for receiving laundry and a tub 109 for receiving Washing liquid.
  • the suds container 109 has an outlet opening 111 which is arranged on an underside of the suds container 109 and is fluidly connected to an outlet line 113, the outlet line 113 having an inlet section 115 and a pumping section 117.
  • the outlet opening 111 is connected to the inlet section 115 of the outlet line 113.
  • a pump 119 is arranged between the inlet section 115 and the pumping section 117 of the outlet line 113.
  • the pump-down section 117 is connected to an outlet opening 121 on the device housing 105.
  • the outlet opening 121 is in one Fig. 2 Connected drain hose, not shown, which is arranged outside the laundry care device 100.
  • the pump 119 is designed to pump washing liquid out of the tub 109 through the outlet opening 111 and to pump the pumped out washing liquid through the inlet section 115, through the pumping section 117, and through the outlet opening 121 out of the laundry care appliance 100, and then to discharge the washing liquid through the outlet hose.
  • the pump 119 is controlled by a controller 123, which is connected to the pump 119 by a control connection 125.
  • the pump 119 is connected to a power detection element 127 for detecting an electrical power value of the pump 119 through a detection connection 129.
  • the controller 123 is connected to the power detection element 127 through a further detection connection 131.
  • washing liquid column 132 remains in the pumping section 117 of the drain line 113 if the pump 119 continues to be driven.
  • Fig. 3 shows a schematic representation of a pumping process in a drain line of a laundry care device according to an embodiment.
  • Fig. 3 shows a temporal representation of the electrical current applied to the pump 119, the pump power of the pump 119, and the activation of the pump 119, all of which are plotted along the ordinate axis 133 as a function of the time which is indicated along the abscissa axis 135.
  • the first curve 137 shows the electrical current intensity applied to the pump 119, in particular the amplitude of the electrical current intensity applied.
  • the second curve 139 shows the pump output of the pump 119.
  • the third curve 141 shows the activation of the pump 119.
  • the pump 119 is operated during a pumping period 143 with a nominal pump power 145 and the flow rate of the washing liquid conveyed by the pump 119 has a sufficiently high value to ensure that the washing liquid is effectively pumped out of the laundry care device 100 through the drain line 113 becomes.
  • the pump 119 Due to the partially ventilated pump suction chamber and the pump pressure chamber, the pump 119 now changes into a non-conveying state which emits a monotonous noise, which is often also referred to as "snorkeling" or “sipping". If the pressure that the pump 119 builds up exceeds the opposite hydrostatic pressure of the washing liquid column 132 built up in the device, the washing liquid column 132 separates from the pump impeller and is temporarily raised, decelerates to a top dead center, then moves again due to gravity back and flows against the pump direction into the suction chamber of the pump 119. The washing liquid is accelerated again in the pressure chamber of the pump 119 until it finally lifts off the pump impeller again. The remaining wash liquid column 132 then swings in at its design-related natural frequency.
  • the oscillating washing liquid column 132 does not set in until a few seconds after the flow has stalled and the monotonous noise.
  • the vibration of the washing liquid column 132 manifests itself as Noise in an oscillating roar, which can be perceived stronger and more disturbing than the noise that occurs immediately after the stall.
  • the vibration of the wash liquid column 132 generates an oscillating noise condition.
  • the pump motor operates under a fluctuating load, although no wash liquid is conveyed in this state, which represents an additional motor load.
  • the present invention is intended to counteract this undesirable phenomenon in terms of process technology, without having to make design changes to the pump 119 and to the system carrying the washing liquid.
  • the controller 123 determines the occurrence of a vibrating wash column 132 in the downstream portion of the drain line 113 with respect to the pump 119 when the electrical power value of the pump 119 detected by a power sensing element 127 exceeds an electrical vibration reference power value.
  • the detected electrical power value can include an electrical power of the pump 119, an electric current, in particular an amplitude of the electric current, or a torque-generating current of the pump 119.
  • the controller 123 After the controller 123 has determined the occurrence of a vibrating washing liquid column 132 in the drain line 113 during the first time period 147, the controller 123 reduces the pumping power of the pump 119 to a reduced pumping power 151 during a second time period 149 following the first time period 147 Controller 123 can deactivate pump 119, as a result of which the delivery flow of the washing liquid conveyed by pump 119 is completely set. Alternatively, however, the controller 123 can only reduce the pump power below a minimum pump power threshold value, which is sufficiently low for the vibrations of the washing liquid column 132 in the drain line 113 to be set.
  • the electrical power detected by the power detection element 127 falls below Power value the electrical vibration reference power value, so that the controller 123 recognizes that the vibrations of the washing liquid column 132 are completely eliminated or at least greatly reduced.
  • the controller 123 After the vibration of the washing liquid column 132 present in the drain line 113 has been reduced during the second time period 149, the controller 123 recognizes the renewed inflow of washing liquid into the drain line 113 during a subsequent third time period 153. During the third time period 153, the controller compares 123 the electrical power value detected by the power detection element 127 with an electrical inflow reference power value. If the detected electrical power value exceeds the electrical inflow reference power value, the controller 123 recognizes that there is a sufficient inflow of washing liquid into the drain line 113, which can ensure that the pump 119 can be operated again with an increased pump power.
  • the controller 123 operates the pump 119 with the reduced pump power 151 during the third time period 153 and compares the detected electrical power value with the electrical inflow reference power value in order to effectively determine the inflow of washing liquid into the drain line 113.
  • the controller 123 increases the reduced pump power 151 of the pump 119 during the third time period 153 and compares the detected electrical power value with the electrical inflow reference power value in order to ensure that a sufficient inflow of washing liquid into the drain line 113 occurs if the electrical inflow reference power value is exceeded by the detected electrical power value to determine.
  • the controller 123 compares the pressure detected by a pressure detection unit in an inlet section 115 of the outlet line 113 with a reference pressure threshold value in order to determine a sufficient inflow of washing liquid into the outlet line 113.
  • the controller 123 again increases the pumping power of the pump 119 to the nominal pumping power 145 in order to convey washing liquid through the drain opening 111 from the tub 109 into the drain line 113 and out of the laundry care device 100.
  • the laundry care device 100 recognizes the lack of liquid flow to the pump 119 at an early stage, and prevents the washing liquid column 132 in the drain line 113 from vibrating and the associated increase in noise and energy reduction without having to carry out constructive, design changes in the laundry care device 100 .
  • the lifespan of the components can also be extended.
  • the program sequence of the laundry care device 100 can be adapted.
  • the program duration can be changed and process engineering sections can be switched on or off.
  • the pump 119 can quickly return to the conveying state. If the operating point of the pump 119 was deliberately operated at a lower operating point without the present method, in order to rule out the oscillation of the washing liquid column 132, the operating point can then be operated at a higher performance level due to the detection of the oscillating washing liquid column 132. As a result, the washing liquid can then be pumped out faster with a higher flow rate or to a higher drain level with a higher pressure in order to shorten the washing process.
  • the two states “snorkeling / sipping" and "vibrating washing liquid column 132 or pounding" which can occur after the flow has stalled, can be distinguished by the method and can be treated in different ways in terms of process engineering.
  • Fig. 4 shows a schematic representation of a detection of a vibrating washing liquid column in a drain line of a laundry care device according to a first embodiment.
  • Fig. 4 shows a time representation of the amplitude of the electric current applied to the pump 119 along the ordinate axis 133 as a function of the time, which is given along the abscissa axis 135.
  • the first curve 137 shows the amplitude of the electric current applied to the pump 119 during the first time segment 147 Fig. 4 it can be seen that individual measured values of the detected amplitude of the electric current are above a vibration reference power value 157.
  • the controller 123 determines that there is a vibrating washing liquid column 132 in the discharge line 113 if, during the first time segment 147, the individual measured values of the detected amplitude of the electrical current intensity exceed the vibration reference power value 157 times, where x is greater than a frequency threshold value, the frequency threshold value in Is set in relation to a time interval.
  • the time interval and the frequency threshold can be variably determined depending on certain program parameters.
  • Fig. 5 shows a schematic representation of detecting a vibrating washing liquid column in a drain line of a laundry care device according to a second embodiment.
  • Fig. 5 shows a temporal representation of the electric current applied to the pump 119 along the ordinate axis 133 as a function of the time, which is indicated along the abscissa axis 135.
  • the first curve 137 shows the electrical current intensity applied to the pump 119 and illustrates the oscillation of the electrical current intensity during the first time segment 147.
  • the fourth curve 159 shows an average variable electrical vibration reference power value 157, which can be determined on the basis of average values of the variable electrical vibration reference power value 157 is, the mean values being determined in each case during an average time interval.
  • Fig. 6 shows a schematic representation of detecting a vibrating washing liquid column in a drain line of a laundry care device according to a third embodiment.
  • Fig. 6 shows an operational vibration analysis of the electric current applied to the pump 119 along the ordinate axis 133 as a function of the frequency of the electric current given along the abscissa axis 135.
  • the fifth curve 161 and the sixth curve 163 show the amplitudes of the electrical current intensity during the first time segment 147 as a function of the frequency.
  • the controller 123 determines a frequency at a maximum amplitude of an electrical power value during the first time segment 147 and compares the determined frequency and the maximum amplitude with reference frequency values and reference amplitudes within a reference period in order to determine the washing liquid column 132 vibrating in the drain line 113.
  • Fig. 7 shows a method 200 for pumping washing liquid in a laundry care appliance 100.
  • the method 200 comprises, as a first step, determining 201 a washing liquid column 132 vibrating in the drain line 113 during a first time period 147 when the electrical power value detected by the power detection element 127 is an electrical vibration reference power value 157 exceeds.
  • the method 200 comprises, as a second step, reducing 203 a pumping power of the pump 119 to a reduced pumping power 151 during a second time period 149 following the first time period 147, wherein when the pump 119 is operated with the reduced pumping power 151, that is detected by the power detection element 127 electrical power value falls below the electrical vibration reference power value 157 in order to reduce the vibration of the washing liquid column 132 present in the drain line 113.
  • the method 200 comprises, as a third step, determining 205 an inflow of washing liquid into the drain line 113 during a third time period 153 following the second time period 149, if the electrical power value detected by the power detection element 127 exceeds an electrical inflow reference power value.
  • the method 200 comprises, as an optional fourth method step, increasing 207 a pump output of the pump 119 to a nominal pump output 145.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (15)

  1. Appareil d'entretien du linge (100) comprenant un compartiment à lessive (109) pour recevoir du liquide de lavage, une ouverture d'évacuation (111) disposée sur le compartiment à lessive (109) pour évacuer du liquide de lavage, dans lequel l'ouverture d'évacuation (111) est reliée en technique de fluide à une conduite d'évacuation (113), dans lequel la conduite d'évacuation (113) est reliée à une pompe (119), dans lequel la pompe (119) est conçue pour pomper du liquide de lavage hors de l'appareil d'entretien du linge (100) à travers l'ouverture d'évacuation (111) et à travers la conduite d'évacuation (113), un élément de détection de puissance (127) pour détecter une valeur électrique de puissance de la pompe (119) et comprenant une commande (123) pour commander la pompe (119), caractérisé en ce que la pompe (123) est conçue pour déterminer durant un premier intervalle de temps (147), une colonne de liquide de lavage (132) vibrante dans la conduite d'évacuation (113), lorsque la valeur électrique de puissance détectée par l'élément de détection de puissance (127) dépasse une valeur électrique de puissance de référence de vibration (157), en ce que
    la commande (123) est conçue, pendant un deuxième intervalle de temps (149) consécutif au premier intervalle de temps (147), pour réduire une puissance de pompage de la pompe (119) à une puissance de pompage réduite (151), dans lequel lors de l'utilisation de la pompe (119) à la puissance de pompage réduite (151), la valeur électrique de puissance détectée par l'élément de détection de puissance (127) est en-deça de la valeur électrique de puissance de référence de vibration (157) pour réduire la vibration de la colonne de liquide de lavage (132) dans la conduite d'évacuation (113), et en ce que
    la commande (123) est conçue, pendant un troisième intervalle de temps (153) consécutif au deuxième intervalle de temps (149), pour déterminer un afflux de liquide de lavage dans la conduite d'évacuation (113), lorsque la valeur électrique de puissance détectée par l'élément de détection de puissance (127) dépasse une valeur électrique de puissance de référence d'afflux.
  2. Appareil d'entretien du linge (100) selon la revendication 1, caractérisé en ce que la commande (123) est conçue, pendant un quatrième intervalle de temps (155) consécutif au troisième intervalle de temps (153), pour augmenter la puissance de pompage de la pompe (119) à une puissance de pompage nominale (145) pour transporter du liquide de lavage à travers l'ouverture d'évacuation (111) à partir du compartiment à lessive (109) et hors de l'appareil d'entretien du linge (100) à travers la conduite d'évacuation (113).
  3. Appareil d'entretien du linge (100) selon la revendication 1 ou 2, caractérisé en ce que la valeur électrique de puissance de la pompe (119) détectée par l'élément de détection de puissance (127) comprend une puissance électrique, une intensité de courant électrique, en particulier une amplitude de l'intensité de courant électrique ou un courant de la pompe (119) formant le couple de rotation.
  4. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la commande (123) est conçue pour déterminer la colonne de liquide de lavage (132) vibrante dans la conduite d'évacuation (113) lorsque la puissance électrique détectée par l'élément de détection de puissance (127) dépasse de
    x fois la valeur électrique de puissance de référence de vibration (157) pendant le premier intervalle de temps (147), x étant supérieur à une valeur seuil de fréquence dans un intervalle de temps.
  5. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la valeur électrique de puissance de référence de vibration (157) est une valeur électrique de puissance de référence de vibration (157) constante ou variable, dans lequel la valeur électrique de puissance de référence de vibration (157) variable peut être détectée par l'élément de détection de puissance (127) lorsque le liquide de lavage présent dans la conduite d'évacuation (113) ne présente pas de colonne de liquide de lavage (132) vibrante.
  6. Appareil d'entretien du linge (100) selon la revendication 5, caractérisé en ce que la valeur électrique de puissance de référence de vibration (157) variable correspond à une valeur électrique de puissance de référence de vibration (157) variable moyenne, dans lequel la valeur électrique de puissance de référence de vibration (157) variable moyenne peut être déterminée en se basant sur des valeurs moyennes de la valeur électrique de puissance de référence de vibration (157) variable, dans lequel les valeurs moyennes peuvent être calculées respectivement pendant un intervalle de temps de valeur moyenne.
  7. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la commande (123) est conçue pour déterminer une fréquence à une amplitude maximale de la valeur électrique de puissance pendant le premier intervalle de temps (147), et en ce que la commande (123) est conçue pour comparer la fréquence déterminée et l'amplitude maximale de la valeur électrique de puissance à des valeurs de fréquence de référence et des amplitudes de référence dans un intervalle de temps de référence pour déterminer la colonne de liquide de lavage (132) vibrante dans la conduite d'évacuation (113).
  8. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la commande (123) est conçue pour désactiver la pompe (119) pendant le deuxième intervalle de temps (149) ou en ce que la commande (123) est conçue pour réduire la puissance de pompage de la pompe (119) en-dessous d'une valeur seuil de puissance de pompage minimale, pendant le deuxième intervalle de temps (149), pour réduire la vibration de la colonne (132) dans la conduite d'évacuation (113).
  9. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la commande (123) est conçue pour déterminer un nouvel afflux de liquide de lavage dans la conduite d'évacuation (113) lorsque la valeur électrique de puissance détectée par l'élément de détection de puissance (127) dépasse de y fois la valeur électrique de puissance de référence d'afflux pendant le troisième intervalle de temps (153), y étant supérieur à une autre valeur seuil de fréquence dans un autre intervalle de temps.
  10. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la commande (123) est conçue pour augmenter la puissance de pompage réduite (151) de la pompe (119) pendant le troisième intervalle de temps (153) et en ce que
    la commande (123) est conçue pour déterminer l'afflux de liquide de lavage dans la conduite d'évacuation (113) lorsque pendant le troisième intervalle de temps (153), la valeur électrique de puissance détectée par l'élément de détection de puissance (127) dépasse la valeur de puissance de référence d'afflux.
  11. Appareil d'entretien du linge (100) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la commande (123) est conçue pour faire fonctionner la pompe (119) à la puissance de pompage réduite (151) pendant le troisième intervalle de temps (153) et en ce que la commande (123) est conçue pour déterminer l'afflux de liquide de lavage dans la conduite d'évacuation (113) lorsque pendant le troisième intervalle de temps (153), la valeur électrique de puissance détectée par l'élément de détection de puissance (127) dépasse la valeur de puissance de référence d'afflux.
  12. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'appareil d'entretien du linge (100) présente une unité de détection de pression pour détecter une pression du liquide de lavage dans la conduite d'évacuation (113) entre l'ouverture d'évacuation (111) et la pompe (119) et en ce que
    la commande (123) est conçue pour déterminer l'arrivée de liquide de lavage dans la conduite d'évacuation (113) lorsque pendant le troisième intervalle de temps (153), la pression détectée par l'unité de détection de pression dépasse une valeur seuil de pression de référence.
  13. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la conduite d'évacuation (113) présente un tronçon d'arrivée (115) qui relie l'ouverture d'évacuation (111) à la pompe (119) fluidiquement, et en ce que la conduite d'évacuation (113) présente un tronçon de pompage de sortie (117) qui relie la pompe (119) à une ouverture de sortie (121) sur un logement d'appareil (105) de l'appareil d'entretien du linge (100), dans lequel la colonne de liquide de lavage (132) vibrante sort dans le tronçon de pompage de sortie (117) pendant le premier intervalle de temps (147).
  14. Appareil d'entretien du linge (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que la pompe (119) présente une chambre de pression de pompage de sortie pour pomper du liquide de lavage, dans lequel la chambre de pression de pompage de sortie est reliée en technique de fluide à la conduite d'évacuation (113), et en ce que la pompe (119) présente une chambre de pression de transvasement par pompage pour transvaser du liquide de lavage par pompage, dans lequel la chambre de pression de transvasement par pompage est reliée fluidiquement à une conduite de pression de transvasement par pompage, dans lequel la conduite de transvasement par pompage est reliée en technique de fluide à une buse d'admission de l'appareil d'entretien du linge (100).
  15. Procédé (200) de pompage de liquide de lavage dans un appareil d'entretien du linge (100), dans lequel l'appareil d'entretien du linge (100) comprend un compartiment à lessive (109) pour recevoir du liquide de lavage, une ouverture d'évacuation (111) disposée sur le compartiment à lessive (109) pour évacuer du liquide de lavage, dans lequel l'ouverture d'évacuation (111) est reliée fluidiquement à une conduite d'évacuation (113), dans lequel la conduite d'évacuation (113) est reliée à une pompe (119), dans lequel la pompe (119) est conçue pour pomper du liquide de lavage hors de l'appareil d'entretien du linge (100) à travers l'ouverture d'évacuation (111) et à travers la conduite d'évacuation (113), un élément de détection de puissance (127) pour détecter une valeur électrique de puissance de la pompe (119) et comprenant une commande (123) pour commander la pompe (119), caractérisé en ce que le procédé (200) comprend les étapes suivantes
    détermination (201) d'une colonne de liquide de lavage (132) vibrante dans la conduite d'évacuation (113) pendant un premier intervalle de temps (147), lorsque la valeur électrique de puissance détectée par l'élément de détection de puissance (127) dépasse une valeur électrique de puissance de référence de vibration (157), réduction (203) d'une puissance de pompage de la pompe (119) à une puissance de pompage réduite (151) pendant un deuxième intervalle de temps (149) consécutif au premier intervalle de temps (147), dans lequel lors de l'utilisation de la pompe (119) avec la puissance de pompage réduite (151), la valeur électrique de puissance détectée par l'élément de détection de puissance (127) est en-deça de la valeur électrique de puissance de référence de vibration (157) pour réduire la vibration de la colonne de liquide de lavage (132) présente dans la conduite d'évacuation (113), et détermination (205) d'un afflux de liquide de lavage dans la conduite d'évacuation (113), pendant un troisième intervalle de temps (153) consécutif au deuxième intervalle de temps (149), lorsque la valeur électrique de puissance détectée par l'élément de détection de puissance (127) dépasse une valeur électrique de puissance de référence d'afflux.
EP17755453.2A 2016-09-05 2017-08-10 Appareil d'entretien du linge doté d'une commande Active EP3507409B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17755453T PL3507409T3 (pl) 2016-09-05 2017-08-10 Urządzenie do przetwarzania prania ze sterownikiem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016216737.5A DE102016216737B4 (de) 2016-09-05 2016-09-05 Wäschepflegegerät mit einer Steuerung
PCT/EP2017/070330 WO2018041590A1 (fr) 2016-09-05 2017-08-10 Appareil d'entretien du linge doté d'une commande

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EP3507409A1 EP3507409A1 (fr) 2019-07-10
EP3507409B1 true EP3507409B1 (fr) 2020-07-15

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CN (1) CN109661490B (fr)
DE (1) DE102016216737B4 (fr)
PL (1) PL3507409T3 (fr)
WO (1) WO2018041590A1 (fr)

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KR102146281B1 (ko) * 2018-04-19 2020-08-20 엘지전자 주식회사 배수펌프 구동장치, 및 이를 구비한 세탁물 처리기기
DE102019207239A1 (de) * 2019-05-17 2020-11-19 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
DE102019209149A1 (de) * 2019-06-25 2020-12-31 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Pumpvorrichtung und ein Verfahren zum Betreiben des Wäschepflegegeräts

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EP2290149B1 (fr) * 2006-11-15 2019-04-03 Electrolux Home Products Corporation N.V. Injecteur et dispositif d'alimentation d'un additif pour un appareil de traitement de textiles
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Publication number Publication date
CN109661490B (zh) 2021-05-25
CN109661490A (zh) 2019-04-19
DE102016216737B4 (de) 2018-03-15
WO2018041590A1 (fr) 2018-03-08
DE102016216737A1 (de) 2018-03-08
EP3507409A1 (fr) 2019-07-10
PL3507409T3 (pl) 2020-12-14

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