EP3507409A1 - Wäschepflegegerät mit einer steuerung - Google Patents
Wäschepflegegerät mit einer steuerungInfo
- Publication number
- EP3507409A1 EP3507409A1 EP17755453.2A EP17755453A EP3507409A1 EP 3507409 A1 EP3507409 A1 EP 3507409A1 EP 17755453 A EP17755453 A EP 17755453A EP 3507409 A1 EP3507409 A1 EP 3507409A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- washing liquid
- power value
- drain line
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 169
- 238000005406 washing Methods 0.000 claims abstract description 164
- 238000005086 pumping Methods 0.000 claims abstract description 74
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000010355 oscillation Effects 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 23
- 230000004941 influx Effects 0.000 claims description 9
- 230000008901 benefit Effects 0.000 description 15
- 238000005201 scrubbing Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010412 laundry washing Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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 controller. After pumping washing liquid from the tub of a laundry care device by a pump, a residue of the pumped washing liquid remains in the drain line, the rest of the pumped washing liquid on the pressure side of the pump in the drain line forms a scrubbing column, if the pump is still driven. From a certain pressure on the pump nozzle, the washing liquid column lifts from the pump pressure chamber, so that the washing liquid column in this case flow back through the gravitational force acting on them in the drain line and can penetrate into the suction chamber of the pump.
- EP 2 933 365 A1 discloses a method for controlling a Umwutpumpsystems disclosed which includes in particular the control of the volume flow to avoid the suction of a water-air mixture.
- DE 10 2010 042 491 A1 discloses a pump device for a domestic appliance is disclosed, wherein the pump device comprises in particular 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, wherein an AC supply voltage to a winding of a stator of the single-phase synchronous motor is applied.
- DE 10 2008 029 910 A1 discloses a method for load level detection of a fluid-conveying driven by an electric motor pump of a household appliance is disclosed.
- the object of the invention by a laundry care device with a tub for receiving washing liquid, arranged on the tub outlet opening for discharging washing liquid, the drain opening is fluidly connected to a drain line, wherein the drain line is connected to a pump, wherein the Pump is formed to pump washing liquid through the drain opening and through the drain line from the laundry care device, a power detection element for detecting an electric power value of the pump, and solved with a control for controlling the pump, wherein the controller is formed during a first period of time in determining the drain pipe oscillating washing liquid column when the electric power value detected by the power detecting element exceeds an electric vibration reference power value, wherein the controller is formed t, during a second time period subsequent to the first time period, to reduce a pump power of the pump to a reduced pump power, wherein in operating the pump having the reduced pumping power, the electric power value detected by the power
- the technical advantage is achieved that an effective reduction or elimination of the oscillating washing liquid column in the drain line is made possible by the control. This reduces noise when pumping out.
- the controller determines the presence of a vibrating scrubbing column in the drain line when the electrical power detected by the power sensing element exceeds an electrical vibration reference power value. Due to the washing liquid column oscillating at a certain frequency in the discharge line, an electric power value of the pump oscillating at a corresponding frequency results, e.g. the amplitude of an applied to the pump electric current. When the electrical vibration reference power value is exceeded by the detected electrical power value, the controller may determine that there is a vibrating wash liquid column in the drain line.
- the controller reduces the pump power of the pump to the reduced pump power, wherein the electric power value detected by the power detection element falls below the electrical vibration reference power value when operating the pump with the reduced pump power, so that a removal, or at least a significant reduction of the oscillating in the drain line washing liquid column can be ensured during the second period.
- the controller determines an influx of washing liquid into the drain line when the electric power value detected by the power detection element exceeds the electric supply reference power value. After the second period, the oscillating washing liquid column in the drain line was sufficiently reduced. Subsequently, when washing liquid from the tub penetrates the drain during the third time period, the electric power value of the pump detected by the power detecting element may exceed the inflow reference power value. As a result, the controller can recognize that sufficient washing liquid is again present in the discharge line in order to ensure effective pumping out of the washing liquid from the laundry care appliance without a vibrating washing liquid column occurring in the discharge line. For this purpose, the controller can sufficiently increase the pump power of the pump again.
- the controller can repeat the first, second and third time period.
- the inventive laundry care device ensures early detection of a lack of washing liquid to the pump, and a vibrating state of the scrubbing column in the drain line and associated noise and high energy requirements can be avoided without constructive, design changes must be performed in the laundry care device.
- the life of the components can be extended.
- the pump is operated by a pump motor, which in particular comprises a permanent-magnet pump motor or an electronically commutated pump motor.
- a reduction of the pump power of the pump is achieved in particular by reducing the pump speed of the pump.
- the occurrence of a vibrating washing liquid column in the drain line does not occur in each laundry care appliance, but occurs when the pump speed of the pump exceeds a predetermined vibration speed.
- the vibration speed is in turn dependent on the height of the washing liquid column in the drain line, wherein the height of the washing liquid column in the drain line in turn depends on the height of a drain hose, which on an outside of the laundry care device is appropriate. If the pump speed of the pump falls below a predetermined vibration speed, no oscillating washing liquid column occurs in the drain line. When the pump speed of the pump exceeds a predetermined vibration speed, a vibrating washing liquid column in the drain line occurs, and the vibration of the washing liquid column is reduced according to the embodiment of the present invention.
- a laundry care appliance is understood to mean a device which is used for laundry care, such as e.g. a washing machine or a washer-dryer.
- a laundry care appliance is understood as a household laundry care appliance. So a laundry care device, which is used in the context of household management, and is treated with the laundry in normal household quantities.
- the controller is configured to increase the pumping power of the pump to a nominal pumping power during a fourth period subsequent to the third period to deliver washing liquid through the drainage opening from the tub and through the drainage conduit from the laundry care appliance ,
- the technical advantage is achieved that after detecting and eliminating the oscillating in the drain line washing liquid column during the first and second time periods and detecting a renewed influx of washing liquid into the drain line during the third period, in the subsequent fourth period again the pump power the pump can be increased to the nominal pumping power to carry the washing liquid from the tub and through the drain line from the laundry care device, without any noise nuisance or mechanical nuisance occurring during the fourth period of time due to a washing liquid column oscillating in the drain line.
- the electric power value of the pump detected by the power detection element comprises an electric power, an electric current strength, in particular an amplitude of the electric current strength, or a torque-forming current of the pump.
- the technical advantage is achieved that the detected by the power detection element changes in the electric power, the electric current, in particular the amplitude of the electric current or the torque-forming current of the pump allow an effective conclusion on the flow rate of the pumped through the pump washing liquid , or to draw conclusions about the occurrence of a vibrating washing liquid column in the drain line.
- the controller is configured to determine the wash column traveling in the drain line when the electrical power value sensed by the power detector exceeds x times the electrical vibration reference power value during the first period, where x is greater than a frequency threshold within a time interval is.
- the electrical vibration reference power value is a constant or a variable electrical vibration reference power value, wherein the variable electrical vibration reference power value is detectable by the power detecting element, if the washing liquid present in the drain line has no oscillating washing liquid column.
- the controller can easily determine, often the detected one, at a constant electrical vibration reference power value electric power value exceeds the electric vibration reference power value.
- a variable vibration reference power value may be detected by the power detecting element itself if the washing liquid present in the drain line does not have a vibrating washing liquid column.
- design-related variations of the vibration reference power value are taken into account, and the controller can determine with greater accuracy whether deviation of the detected electric power value from the variable vibration reference power value is due to a washing liquid column oscillating in the drain line.
- variable electrical vibration reference power value corresponds to a mean variable electrical vibration reference power value, wherein the average variable electrical vibration reference power value is determinable based on average values of the variable electrical vibration reference power value, wherein the mean values are each determinable during an average time interval.
- the technical advantage is achieved that by taking into account average values of the variable electrical vibration reference power value that can be determined during the average time interval when determining the average variable electrical vibration reference power value, serious, in particular statistical or random, deviations of the vibration reference power value can be compensated. As a result, it can be determined with particular reliability by the controller whether there is an oscillating washing liquid column in the drain line.
- the controller is designed to determine a frequency at a maximum amplitude of the electrical power value during the first time period, and the controller is configured to determine the specific frequency and the maximum amplitude of the electrical power value with reference frequency values and reference amplitudes within one Reference period to determine the oscillating in the drain line washing liquid column.
- the technical advantage is achieved that by converting the electrical power value detected during the first time period into corresponding frequencies of the electric power value, eg by Fourier transformation, and by comparing the determined frequency at the maximum amplitude of the electric power value with reference frequency values and reference amplitudes within a reference period, a particularly effective determination of the oscillating in the drain line washing liquid column is made possible. With the washing liquid column oscillating in the discharge line, a correspondingly oscillating electric power value is correlated, from which the frequency at the maximum amplitude of the electric power value can be effectively determined.
- the controller is configured to deactivate the pump during the second time period, or the controller is designed to reduce the pumping capacity of the pump below a minimum pumping power threshold during the second time period to reduce the oscillation of the washing liquid column in the drainage line to reduce.
- the technical advantage is achieved that it is ensured in the second period that the vibrations of the scrubbing column in the drain line can be significantly reduced or completely eliminated.
- the reduced pump power is zero.
- the minimum pump power threshold is set sufficiently low that no or only greatly reduced oscillations of the scrubber column in the drain line occur below the minimum pump power threshold.
- the controller is configured to determine a re-flow of wash fluid into the drain line when the electrical power value sensed by the power sensing element exceeds the electrical current reference power value during the third time period y times, where y is greater than another frequency threshold within a further time interval.
- the further frequency threshold value is set with respect to a further predetermined time interval and thus ensures that the detected electric power value exceeds the electrical inflow reference power value sufficiently often to be able to determine the inflow of washing fluid with sufficient certainty.
- the further time interval and the further frequency threshold value correlating with the further time interval can hereby be set variably as a function of certain program parameters.
- the controller is configured to increase the reduced pumping power of the pump during the third time period, and the controller is configured to determine the flow of washing liquid into the drainage line during the third time period detected by the power sensing element electric power value exceeds the inflow reference power value.
- the technical advantage is achieved that by continuously increasing the pumping power of the pump during the third time period, based on the reduced pumping power during the second time period, and comparing the electric power value detected by the power detecting element with the inflow reference power value with increasing the pumping power the pump can be ensured that an influx of washing liquid can be effectively detected in the drain line.
- the controller is configured to operate the pump at the reduced pump power during the third time period, and the controller is configured to determine the flow of wash fluid into the drain line when, through the power sensing element during the third time period detected electric power value exceeds the inflow reference power value.
- the laundry care apparatus has a pressure detecting unit for detecting a pressure of the washing liquid in the drainage pipe between the drainage port and the pump, and the controller is configured to determine the flow of washing liquid into the drainage pipe when during the third time period the pressure detected by the pressure detection unit exceeds a reference pressure threshold.
- the pressure detection unit of the controller allows an effective and direct way to detect the flow of washing liquid into the drain line.
- the drainage line has an inlet section which fluidly connects the drainage opening to the pump, and the drainage line has a pumping section which connects the pump to an outlet opening on a device housing of the laundry care appliance, wherein the oscillating washing liquid column during the first period of time occurs in the Abpumpabites.
- the technical advantage is achieved that the washing liquid can be sucked through the suction-side inlet section of the drain line effectively by the pump, and that the sucked washing liquid can be effectively pumped through the pressure-side pumping section by means of the pump.
- the pump has a Abpumpdruckhunt for pumping off washing liquid, the Abpump réelleformat is fluidly connected to the drain line, and the pump has a Umpump réellehunt for pumping over washing liquid, wherein the Umpump réelleformat is fluidly connected to a Umpump réelletechnisch in which the recirculation 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, wherein the laundry care device a liquid container for receiving washing liquid, arranged on the tub outlet opening for discharging washing liquid, wherein the drain opening fluidly connected to a drain line , wherein the drain line is connected to a pump, wherein the pump is adapted to pump washing liquid through the drain opening and through the drain line from the laundry care device, a power detecting element for detecting an electric power value of the pump and a controller for controlling the pump the method comprises the steps of: determining a scrubbing liquid column oscillating in the downcomer during a first period of time when the electrical power value sensed by the power sensing element comprises a exceeding a pumping power of the pump to a reduced pumping power during a second period subsequent to the first period, wherein when the pump is operated at the reduced pumping power, the electric power value detected by the power detecting element is less than the electrical vibration reference power value to make the vibration of the in and determining
- Fig. 1 is a schematic view of a laundry care device
- FIG. 2 shows a schematic view of a laundry care appliance with a pump connected to a drain line
- Fig. 3 is a schematic representation of a pumping operation in a laundry care device
- 4 shows a schematic representation of a detection of a vibrating washing liquid column in a drain line of a laundry care appliance according to a first embodiment
- FIG. 5 shows a schematic representation of a detection of a vibrating washing liquid column in a drain line of a laundry care appliance according to a second embodiment
- FIG. 6 shows a schematic illustration of detecting a vibrating washing liquid column in a drain line of a laundry care appliance according to a third embodiment
- FIG. 7 shows a method for pumping washing liquid in a laundry care appliance.
- Fig. 1 shows a schematic view of a general laundry care device 100, such as e.g. a washing machine.
- the laundry care appliance 100 comprises an induction bowl 101, into which wash-care substance, such as e.g. 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 connected to a drain line pump.
- 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 accommodating laundry Washing liquid.
- the tub 109 has a drain opening 1 1 1, which is arranged on an underside of the tub 109 and fluidly connected to a drain line 1 13, wherein the drain line 1 13 an inlet section 1 15 and a pumping section 1 17.
- the drain opening 1 1 1 is connected to the inlet section 1 15 of the drain line 1 13.
- a pump 1 19 is seconded.
- the Abpumpabites 1 17 is connected to an outlet opening 121 on the device housing 105.
- the outlet opening 121 is connected to a drain hose, not shown in FIG. 2, which is arranged outside the laundry care appliance 100.
- the pump 1 19 is designed to pump washing liquid through the drain opening 1 1 1 from the tub 109 and pumped off the pumped washing liquid through the inlet section 1 15, through the pumping section 1 17, and through the outlet opening 121 from the laundry care device 100 and then the washing liquid remove the drain hose.
- the pump 1 19 is controlled by a controller 123, which is connected to the pump 1 19 through a control connection 125.
- the pump 1 19 is connected to a power detection element 127 for detecting an electric power value of the pump 1 19 through a detection connection 129.
- FIG. 3 shows a schematic illustration of a pumping operation in a drain line of a laundry care appliance according to an embodiment.
- FIG. 3 shows a time diagram of the electrical current applied to the pump 1 19, the pumping power of the pump 1 19, and the activation of the pump 1 19, all along the ordinate axis 133 as a function of time, which is indicated along the abscissa axis 135 , are applied.
- the first curve 137 shows the voltage applied to the pump 1 19 electrical current, in particular the amplitude of the applied electric current.
- the second turn 139 shows the pumping power of the pump 1 19.
- the third curve 141 shows the activation of the pump 1 19. As shown in FIG. 3, the pump 1 19 is operated during a pumping period 143 with a nominal pumping power 145 and the flow rate through the pump 1 19 promoted washing liquid has a sufficiently high value to ensure that the washing liquid is effectively pumped through the drain line 1 13 from the laundry care device 100.
- the inflow of the washing liquid to the pump 1 19 breaks off during the first time interval 147 following the pumping time section 143, so that the pumping power of the washing liquid delivered by the pump 19 drops during the first time interval 147. Since the downstream of the discharge line 13 is connected to the pump 1 19 on the pressure side, a washing liquid column 132 remains in the downstream or pressure-side part of the drain line 13, if the pump 19 continues to be driven.
- the pump 1 19 Due to the partially ventilated pump suction chamber and the pump pressure chamber, the pump 1 19 now changes into a non-conveying state which emits a monotone noise, which is often referred to as "snorkeling" or “slurping".
- the washing liquid column 132 dissolves from the pump impeller and is temporarily raised, delayed at a top dead center, then moves again due to Gravity back and flows against the pumping direction into the suction chamber of the pump 1 19.
- the washing liquid is accelerated again until it finally lifts off the pump impeller again. Subsequently, the remaining washing liquid column 132 oscillates in its design-related natural frequency.
- the vibrating washing liquid column 132 usually turns on only a few seconds after the stall and the monotonous noise noise.
- the vibration of the washing liquid column 132 manifests itself as Noise in an oscillating roar, which can be perceived as stronger and more disturbing than the noise noise that occurs directly after the stall.
- the vibration of the washing liquid column 132 generates an oscillating noise condition.
- the pump motor operates at a fluctuating load, although in this state, no washing liquid is delivered, which is an additional engine load.
- the controller 123 determines the occurrence of a vibrating washing liquid column 132 in the downstream part of the drain pipe 1 13 with respect to the pump 1 19 when the electric power value of the pump 1 19 detected by a power detecting element 127 exceeds an electric vibration reference power value.
- the detected electrical power value may include an electric power of the pump 1 19, an electric current, in particular amplitude of the electric current, or a torque-generating current of the pump 1 19.
- the controller 123 After the controller 123 has determined the occurrence of a vibrating scrubbing column 132 in the drain line 1 13 during the first period 147, the controller 123 reduces the pump power of the pump 1 19 to a reduced pump power 151 during a second period 149 subsequent to the first period 147 , The controller 123 may deactivate the pump 1 19, whereby the flow rate of the pumped by the pump 1 19 washing liquid is completely adjusted. Alternatively, however, the controller 123 may merely reduce the pump power below a minimum pump power threshold which is sufficiently low to adjust the vibrations of the scrubbing column 132 in the drain line 13.
- 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 reducing the vibration of the wash liquid column 132 present in the drain line 13 during the second time interval 149, the controller 123 recognizes the renewed influx of wash liquid into the drain line 13 during an adjoining third time period 153. During the third time interval 153 the controller 123 outputs the electric power value detected by the power detection element 127 with an electric supply reference power value. When the detected electric power value exceeds the electric supply reference power value, the controller 123 recognizes that a sufficient flow of washing liquid into the drain pipe 13 takes place, whereby it can be ensured that the pump 1 19 can be operated again with an increased pumping power.
- the controller 123 operates the pump 1 19 during the third time section 153 with the reduced pumping power 151 and compares the detected electric power value with the electrical inflow reference power value to effectively control the flow of wash fluid into the drain line 13 to determine.
- the controller 123 increases the reduced pumping power 151 of the pump 1 19 during the third time period 153 and compares the detected electric power value with the electrical inflow reference power value to obtain a detected electric power value when the inflow electric power reference value is exceeded to determine sufficient influx of washing liquid in the drain line 1 13.
- the controller 123 compares the pressure detected by a pressure detection unit in an inlet section 15 of the drain line 13 with a reference pressure threshold value to determine a sufficient flow of washing liquid into the drain line 13. During a fourth time section 155 adjoining the third time section 153, the controller 123 again increases the pumping power of the pump 1 19 to the nominal pumping power 145, to wash fluid through the drain opening 11 1 from the tub 109 into the drain line 13 and out of the laundry care device 100 to carry.
- the laundry care apparatus 100 By means of the laundry care apparatus 100 according to the invention, early detection of the absence of liquid flow to the pump 1 19 is detected, and an oscillating state of the washing liquid column 132 in the drain line 13 and associated noise increase and energy reduction are avoided without constructive, design changes being made in the laundry care appliance 100 Need to become. In addition, the life of the components can be extended.
- the program sequence of the laundry care device 100 can be adjusted.
- the program duration can be changed, and procedural sections can be switched on or off.
- the pump 1 19 can quickly return to the promotional state. If the operating point of the pump 1 19 without the present method has been deliberately operated at a lower operating point to rule out the swinging of the washing liquid column 132 in principle, the operating point can now be operated at a higher power level due to the detection of the vibrating 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 to shorten the washing process.
- the two states “snorkeling / slurping” and "vibrating washing liquid column 132, or pounding", which may occur after stall can be distinguished by the process and treated procedurally in different ways.
- 4 shows a schematic representation of detecting a vibrating washing liquid column in a drain line of a laundry care appliance according to a first embodiment.
- 4 shows a temporal representation of the amplitude of the electrical current applied to the pump 1 19 along the ordinate axis 133 as a function of time, which is indicated along the abscissa axis 135.
- the first curve 137 shows the amplitude of the electrical current applied to the pump 1 19 during the first time interval 147. It can be seen from FIG. 4 that individual measured values of the detected amplitude of the electrical current strength are above a vibration reference power value 157.
- the controller 123 determines that there is a vibrating scrubbing column 132 in the drain line 13 when, during the first period 147, the individual measured values of detected amplitude of electrical current exceed the vibration reference power value 157 x times, where x is greater than a frequency threshold, where the frequency threshold is set in relation to a time interval.
- the time interval and the frequency threshold value can be variably determined as a function of 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 chronological illustration of the electrical current applied to the pump 1 19 along the ordinate axis 133 as a function of time, which is indicated along the abscissa axis 135.
- the first curve 137 shows the electrical current applied to the pump 1 19 and illustrates the oscillation of the electrical current during the first time period 147.
- the fourth curve 159 shows a mean variable electrical vibration reference power value 157, which is based on average values of the variable electrical vibration reference power value 157 can be determined, wherein the average values are determined in each case during an average time interval.
- 6 shows a schematic representation of detecting a vibrating washing liquid column in a drain line of a laundry care appliance according to a third embodiment. 6 shows an operating vibration analysis of the electrical current applied to the pump 1 19 along the ordinate axis 133 as a function of the frequency of the electrical current intensity, which is indicated along the abscissa axis 135.
- the fifth curve 161 and the sixth curve 163 show the amplitudes of the electric current during the first time interval 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 interval 147 and compares the determined frequency and the maximum amplitude with reference frequency values and reference amplitudes within a reference period to determine the washing liquid column 132 oscillating in the drain line 1 13.
- FIG. 7 shows a method 200 for pumping washing liquid in a laundry care device 100.
- the method 200 comprises as a first step the determination 201 of a washing liquid column 132 oscillating in the drain line 1 13 during a first time interval 147 when the electrical power value detected by the power detection element 127 exceeds an electrical vibration reference power value 157.
- the method 200 comprises, as a second step, reducing 203 a pumping power of the pump 1 19 to a reduced pumping power 151 during a second time interval 149 adjoining the first time interval 147, wherein when the pump 1 19 is operated with the reduced pumping power 151, the pumping power is detected by the power sensing element 127 detected electric power value falls below the electrical vibration reference power value 157 to reduce the vibration of the present in the drain line 1 13 washing liquid column 132.
- the method 200 includes, as a third step, determining 205 an inflow of wash liquid into the drain line 13 during a third time period 153 subsequent to the second time period 149 when the electrical power value sensed by the power sensing element 127 exceeds an electrical input reference power value.
- the method 200 includes, as an optional fourth method step, increasing 207 a pumping power of the pump 1 19 to a nominal pumping power 145.
- First process step Determining a washing liquid column oscillating in the discharge line
- Second process step reducing a pump power of the pump to a reduced pump power
- Optional fourth step Increase a pump power of the pump to a nominal pump power
Landscapes
- 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)
Abstract
Description
Claims
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 (de) | 2016-09-05 | 2017-08-10 | Wäschepflegegerät mit einer steuerung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3507409A1 true EP3507409A1 (de) | 2019-07-10 |
EP3507409B1 EP3507409B1 (de) | 2020-07-15 |
Family
ID=59686924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17755453.2A Active EP3507409B1 (de) | 2016-09-05 | 2017-08-10 | Wäschepflegegerät mit einer steuerung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3507409B1 (de) |
CN (1) | CN109661490B (de) |
DE (1) | DE102016216737B4 (de) |
PL (1) | PL3507409T3 (de) |
WO (1) | WO2018041590A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US4964783A (en) | 1988-04-20 | 1990-10-23 | Hanning Electro-Werke Gmbh & Co. | Device for emptying a liquid-collection tank in a water-conducting household appliance |
US5330580A (en) * | 1992-05-01 | 1994-07-19 | General Electric Company | Dishwasher incorporating a closed loop system for controlling machine load |
KR20060002564A (ko) * | 2004-07-02 | 2006-01-09 | 삼성전자주식회사 | 세탁기 |
EP1923499B1 (de) * | 2006-11-15 | 2018-02-28 | Electrolux Home Products Corporation N.V. | Düse und Versorgungssystem eines Zusatzmittels für eine Vorrichtung zum Behandeln von Textilien |
DE102008029910C5 (de) | 2008-06-24 | 2020-03-05 | BSH Hausgeräte GmbH | Verfahren zur Lastzustandserkennung einer Pumpe |
US8793828B2 (en) * | 2010-04-13 | 2014-08-05 | Whirlpool Corporation | Laundry treating appliance with automatic pump shutoff |
DE102010042491A1 (de) | 2010-10-15 | 2012-05-03 | BSH Bosch und Siemens Hausgeräte GmbH | Pumpeneinrichtung für ein Hausgerät, Hausgerät und Verfahren zum Betreiben eines Antriebsmotors |
DE102010042494A1 (de) | 2010-10-15 | 2012-04-19 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Abschalten eines Einphasen-Synchronmotors, Schaltungsanordnung zum Betreiben eines Einphasen-Synchronmotors und Hausgerät |
PL2455534T3 (pl) * | 2010-11-22 | 2017-07-31 | Electrolux Home Products Corporation N.V. | Pralka |
EP2474660A3 (de) * | 2011-01-05 | 2013-11-06 | Samsung Electronics Co., Ltd. | Waschmaschine mit einem Antivibrationsabflussschlauch |
DE102011089116A1 (de) * | 2011-12-20 | 2013-06-20 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät mit einem Speicherbehälter und einem Oxidationsmittelgenerator sowie Verfahren zu seinem Betrieb |
DE102014105527B3 (de) * | 2014-04-17 | 2015-04-16 | Miele & Cie. Kg | Verfahren zur Regelung eines Umflutungspumpen-Systems |
DE102015209287B3 (de) * | 2015-05-21 | 2016-07-28 | BSH Hausgeräte GmbH | Wäschepflegegerät mit einer Laugenpumpe |
-
2016
- 2016-09-05 DE DE102016216737.5A patent/DE102016216737B4/de not_active Expired - Fee Related
-
2017
- 2017-08-10 PL PL17755453T patent/PL3507409T3/pl unknown
- 2017-08-10 CN CN201780053683.9A patent/CN109661490B/zh active Active
- 2017-08-10 EP EP17755453.2A patent/EP3507409B1/de active Active
- 2017-08-10 WO PCT/EP2017/070330 patent/WO2018041590A1/de active Application Filing
Also Published As
Publication number | Publication date |
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CN109661490A (zh) | 2019-04-19 |
DE102016216737B4 (de) | 2018-03-15 |
PL3507409T3 (pl) | 2020-12-14 |
EP3507409B1 (de) | 2020-07-15 |
WO2018041590A1 (de) | 2018-03-08 |
DE102016216737A1 (de) | 2018-03-08 |
CN109661490B (zh) | 2021-05-25 |
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