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
  • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
  • D06F39/08—Liquid supply or discharge arrangements
  • D06F39/083—Liquid discharge or recirculation arrangements
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
  • D06F34/08—Control circuits or arrangements thereof
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/18—Washing liquid level
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/44—Current or voltage
  • D06F2103/48—Current or voltage of the motor driving the pump
• • 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
  • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
• • 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
  • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
• • 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
  • D06F39/087—Water level measuring or regulating devices

Definitions

• the present invention relates to a laundry care device with a controller.
• washing liquid is pumped out of the tub by means of a pumping device, and the pumped washing liquid is fed again by means of the pumping device to the tub by the pumping system to rewet the laundry in the washing drum with washing liquid.
• the laundry drum is further rotated by a drum drive at a rotational speed to ensure a favorable flow of laundry in the laundry drum. If the pumping is not coordinated with the rotation of the laundry drum, it is possible that the flow of the laundry during the pumping process may be impaired.
• EP 2 918 721 A1 discloses a pumping device for a washing machine or dishwasher, which has a control for controlling an electric motor.
• DE 42 10 577 A1 discloses a washing machine with a laundry drum is disclosed, wherein during a spin section the centrifuged rinsing liquid can be returned to the laundry drum via a spraying device.
• the object of the invention is achieved by a laundry care device, with a tub for receiving washing liquid, wherein in the tub a laundry drum for receiving laundry is arranged, wherein the tub includes a drain port and an inlet nozzle, the drain port being fluidly connected to the inlet nozzle by a conduit, wherein a pumping pump for pumping wash fluid is disposed in the conduit, the pumping device configured to pump wash fluid out of the tub through the drain port; and to pump the pumped washing liquid back through the line and through the inlet nozzle into the washing drum located in the tub to rewet the laundry in the washing drum with washing liquid, a drum drive for rotating the laundry drum and a controller for controlling the drum drive and the pumping device wherein the controller is adapted to drive the drum drive during a rotation operation to rotate the laundry drum at a rotational speed, the controller being configured to control the pumping operation at the
• the pumping operation is not coordinated with the rotation of the laundry drum, whereby the pumping apparatus often supplies washing liquid to the laundry in the laundry drum when the laundry drum is not rotating and whereby the pumping apparatus often does not supply washing liquid to the laundry in the laundry drum as the laundry drum rotates ,
• the pumping apparatus often supplies washing liquid to the laundry in the laundry drum when the laundry drum is not rotating and whereby the pumping apparatus often does not supply washing liquid to the laundry in the laundry drum as the laundry drum rotates .
• During a standstill phase of the laundry drum may, under certain circumstances, especially in a full load of the laundry drum, to a rebound of the supplied washing liquid to the laundry come, whereby the supplied washing liquid does not moisten the laundry, but flows on the outside of the laundry drum directly into the tub.
• the controller activates the circulating pump at the beginning of the rotation process only during an active rotation of the laundry drum.
• the recirculation device is deactivated by the controller, whereby the level of washing liquid in the tub can be regenerated, and in a subsequent rotation process the circulating pump is provided with a sufficient amount of washing liquid to pump again washing liquid.
• 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 tumble 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 deactivate the recirculation device at a deactivation time prior to the end of the rotation process, or the controller is configured to operate the recirculation device at the deactivation time with a pumping power which is insufficient to supply the pumped-out washing liquid again to feed the laundry in the laundry drum.
• the deactivation time is before the end of the rotation process and provides a time buffer. Since, after the deactivation of the pumping device, reducing the flow rate of the pumped-over washing liquid does not occur immediately, but under certain circumstances with a time delay, it can thus be ensured by the time buffer be that at the end of the rotation process, no more washing liquid is supplied through the inlet nozzle of the laundry in the laundry drum.
• the drum drive is designed to rotate the laundry drum during the rotation process in a first rotational direction of rotation or in a second rotational direction of rotation, which is opposite to the first direction of rotation.
• the technical advantage is achieved that a particularly advantageous turning of the laundry in the laundry drum is ensured by the rotation of the laundry drum in different rotational directions, and thus also an advantageous wetting of the laundry in the laundry drum is made possible.
• the drum drive is designed to rotate the laundry drum during the rotation process in the first rotational direction of rotation, and the drum drive is designed to rotate the laundry drum in the second rotational direction during a subsequent rotation process following the rotation process.
• the drum drive is designed to rotate the laundry drum during the rotation process with a turning rotational speed in order to turn the laundry in the laundry drum, wherein the turning rotational speed in particular comprises 20 revolutions per minute to 60 revolutions per minute.
• the technical advantage is achieved that an accelerated rotational movement of the laundry drum is ensured by the tripodspuniere, which is sufficient for the laundry is brought into abutment with the laundry drum.
• a laundry channel is formed inside the laundry in the laundry drum, into which washing liquid is introduced by means of the inlet nozzle in order to advantageously wet the laundry with the washing liquid.
• the introduced into the laundry channel washing liquid is pressed due to the centrifugal force acting on it by the applied to the laundry drum laundry to the outside and thus ensures an advantageous wetting of the laundry.
• the controller is designed to repeat the rotation process several times, in particular to repeat it between 100 times and 600 times.
• the technical advantage is achieved that is ensured by the repeated repetition of the rotation process, a particularly advantageous moisture penetration of the laundry in the laundry drum.
• a rotation pause is present between the repeated rotation processes, wherein the control is designed to deactivate the drum drive and the recirculation device during the respective rotation pause.
• the technical advantage is achieved that can be ensured by the deactivation of the drum drive and the pumping device during the rotation breaks that there is an increase in the washing liquid level in the tub, whereby the pumping device in one on the Rotation break following wash again a sufficient amount of washing liquid for the pumping process is available.
• the laundry care appliance comprises a program selection device for selecting a plurality of selectable laundry care programs, wherein the controller is designed to control the duration of the rotation breaks as a function of the selected laundry care program.
• the technical advantage is achieved that the duration of the rotation breaks can be advantageously adapted to the selected laundry care program. For example, if a wool washing program has been selected to maintain wool laundry, the duration of the rotation pauses may be increased because wool has increased retention of washing liquid.
• the laundry care device has a fill level sensor for detecting a level of wash liquid in the tub, wherein the controller is configured to start the rotation process and to activate the drum drive and the Umpumpvorides at the beginning of the rotation process, when the detected level exceeds a level threshold.
• the technical advantage is achieved that can be ensured by the exceeding of the level threshold by the detected level of the washing liquid in the tub, that a sufficient amount of washing liquid is present in the tub so that an advantageous pumping of the washing liquid can be ensured by the pumping device.
• the laundry care appliance has a power detection element for detecting an electrical power value of the circulation pump, the controller being designed to end the rotation process and to drive the drum drive and the circulation pump End of the rotation process to deactivate when the detected electric power value falls below an electrical power threshold.
• the technical advantage is achieved that can be detected by falling below the electrical power threshold by the detected electrical power value of the pumping device by the controller when air is sucked through the pumping device and thus no washing liquid is present in the tub.
• This is made possible because, when pumping washing liquid through the pumping device, a greater electric power value of the pumping device is required compared with conveying an air-washing liquid mixture. Thereby, a conveyance of air can be prevented by the pumping device.
• the electric power detection element comprises a current sensor for detecting a supply current of the circulating pump device.
• the technical advantage is achieved that can be effectively detected by the current sensor for detecting a supply current of the recirculation pump when the recirculation pump sucks an air-washing liquid mixture and thereby the rotation process can be terminated.
• a number of projections are arranged in the laundry drum, which are designed to move the laundry during a rotation of the laundry drum in the laundry drum.
• the object is achieved by a method for washing laundry in a laundry care device, wherein the laundry care device has a lye container for receiving washing liquid, wherein in the tub a laundry drum for receiving laundry is arranged the tub includes a drain port and an inlet nozzle, the drain port being fluidly connected to the inlet nozzle by a conduit, wherein a pumping device for pumping wash fluid is disposed in the conduit, the bypass pump being configured to pump wash fluid out of the tub through the drain port; and to pump the pumped washing liquid back through the line and through the inlet nozzle into the washing drum arranged in the tub to rewet the laundry in the washing drum with washing liquid
• the laundry care device comprising a drum drive for rotating the laundry drum and a control for controlling the drum drive and the recirculating pump, the method comprising the steps of: activating the drum drive during
• the technical advantage is achieved that a particularly effective moisture penetration of laundry in the laundry drum can be ensured during the pumping of washing liquid by the method.
• the rotation process is repeated several times by the controller.
• Fig. 1 is a schematic view of a laundry care device
• FIG. 2 shows a schematic view of a pumping system of a laundry care appliance with a pump-around device
• FIG. 3 is a graphical representation of a washing process in a laundry care appliance according to an embodiment.
• Fig. 4 is a schematic representation of a method for washing laundry in a laundry care device.
• Fig. 1 shows a schematic view of a general laundry care device 100, such as e.g. a washing machine.
• the laundry care device 100 comprises an induction bowl 101, into which detergent or other liquid substances can be introduced.
• the laundry care appliance 100 comprises a door 103 for loading the laundry care appliance 100 with laundry.
• Fig. 2 shows a schematic view of a pumping system of a laundry care device with a pumping device.
• the laundry care apparatus 100 has a tub 105 for receiving washing liquid, and has a laundry drum 107 for receiving laundry.
• the laundry drum 107 has a drum base 109 and is driven by a drum drive 1 1 1 by means of a drive connection 1 13.
• the lye container 105 has a discharge opening 15 and an inlet nozzle 117, which are fluidly connected by a line 1 19 of the pumping system, wherein in the line 1 19 a pumping device 121 for pumping washing liquid through the line 1 19 is arranged.
• the pumping device 121 can pump washing liquid through the discharge port 15 1 from the tub 105 during a recirculation process, not shown in Fig.
• the laundry care device 100 further comprises a controller 123, which is connected to the pumping device 121 by a first control connection 125, and which is connected to the drum drive 1 1 1 by a second control connection 127 to drive the pumping device 121 and the drum drive 1 1 1.
• the controller 123 is configured to activate the drum drive 1 1 1 at the beginning of a rotation operation and to activate the transfer pump 121 at the beginning of the rotation process.
• 3 shows a graphical representation of a washing process in a laundry care appliance according to an embodiment.
• 3 shows a time plot of the level of washing liquid in the tub 105, the rotational speed of the laundry drum 107, and the pumping capacity of the pump-around device 121, all plotted along the ordinate axis 129 versus time indicated along the abscissa axis 131 ,
• the first curve 133 shows the profile of the level of washing liquid in the tub 105.
• the second curve 135 shows the course of the rotational speed of the laundry drum 107.
• the third curve 137 shows the course of the pumping power of the circulating pump 121.
• the drum drive 1 1 1 is deactivated prior to the start of the pump-over, and the laundry drum 107 has a standstill rotation speed 139 of 0 revolutions per minute.
• the recirculation pump 121 is also deactivated prior to the start of the recirculation and has a standstill pumping capacity 141.
• the level of the washing liquid in the tub 105 before pumping has a maximum value.
• the controller 123 is configured to activate the drum drive 1 1 1 and the pumping device 121 when the level of washing liquid present in the tub 105 is above a connection point 143.
• the rotation process 145 is started by the controller 123.
• the drum drive 1 1 1 rotates the laundry drum 107 at a rotational speed 147.
• the controller 123 activates the recirculation device 121, which circulates washing liquid at a pumping rate 149 in the laundry care device 100.
• the circulating pump 121 pumps during the rotation process 145 a lot of washing liquid from the tub 105 in the line 1 19 and leads the pumped washing liquid through the line 1 19 and through the inlet nozzle 1 17 again the laundry in the laundry drum 107.
• the level of the washing liquid present in the tub 105 drops and falls below a shut-off point 151 during the rotation process 145.
• the shut-off point 151 falls below an air-washing liquid mixture is sucked by the pumping device 121, which can be detected by the controller 123, and thereby the rotation process 145 can be terminated by the controller 123.
• the controller 123 deactivates the drum drive 11 and the transfer pump 121.
• the laundry drum 107 again has a standstill rotation speed 139 of 0 revolutions per minute, and the circulating pump 121 again has a standstill pumping power 141.
• the controller 123 is designed to repeat the rotation process 145 several times, with 145 rotation breaks 153 being present between the individual rotation processes.
• the drum drive 1 1 1 1 can reversibly rotate the laundry drum 107 in a first rotational direction of rotation or, alternatively, in another rotational direction of rotation opposite to the first direction of rotation.
• the drum drive 1 1 1 is formed to rotate during the fifth rotation operation 145, the laundry drum 107 with a ganrotationsmosiere 155 to bring the laundry with the laundry drum 107 into abutment.
• the Anlagotationsfaniere 155 is greater than the rotational speed 147 during the preceding rotation operations 145 and allows by the concern of the laundry on the laundry drum 107 a particularly effective moisture penetration of the laundry with washing liquid during pumping.
• the controller 123 is formed during the laundry maintenance program 107 during the laundry maintenance program to not pump the washing liquid and activate the pumping device 121 only when the laundry drum 107 is rotated by the drum drive 1 1 1 and a positive effect on the washing result can be achieved ,
• the circulating pump 121 is activated simultaneously with the activation of the drum drive 1 1 1. If the rotary movement of the laundry drum 107 stops, the circulating pump 121 is also deactivated at the same time. In a higher level then the switch-on and switch-off can be programmed based on the total wash time of the laundry care program.
• controller 123 allows the controller 123 to recognize when the rotary operation 145 of the laundry drum 107 will end. In this case, the controller 123 may already deactivate the recirculation device 121 at a deactivation time before the end of the rotation process 145, or reduce the pumping capacity of the recirculation device 121 to such an extent that there is insufficient flow to re-apply the pumped-out washing liquid to the laundry in the laundry drum 107 supply.
• the level of the volume of the washing liquid circulated in the circulating pump can be regenerated.
• the circulating pump 121 is able to maintain the flow rate of the washing liquid longer.
• up to 400 rotations 153 occur and there is a great potential to stabilize the pumping cycle.
• a high duty cycle of the circulating pump 121 can be made possible, which leads to better results in the washing performance.
• the duty cycle of the transfer pump 121 becomes more reproducible.
• the level of the washing liquid always recovers when the Umpumpvortechnisch 121 can not effectively circulate washing liquid. This results overall in a performance optimization of the pumping device 121.
• FIG. 4 shows a schematic representation of a method 200 for washing laundry in a laundry care appliance 100, which is described in accordance with the embodiments of FIGS. 2 and 3.
• the method 200 includes driving the drum drive 1 1 1 during a rotation operation 145 by the controller 123 to rotate the laundry drum 107 at a rotational speed 147.
• the method 200 comprises activating 203 the circulating pump 121 at the beginning of the rotation process 145 by the controller 123 to pump washing liquid through the discharge port 1 15 from the tub 105 in the line 1 19, and the pumped washing liquid through the line 1 19 and through to supply the inlet nozzle 1 17 again to the laundry in the laundry drum 107.
• the method 200 includes deactivating 205 the transfer pump 121 at the end of the rotation process 145 by the controller 123.

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

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=59093561

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (3)

Citations (6)

Family Cites Families (10)

• 2016
  • 2016-07-08 DE DE102016212489.7A patent/DE102016212489A1/de not_active Ceased
• 2017
  • 2017-06-21 CN CN201780042302.7A patent/CN109477273B/zh active Active
  • 2017-06-21 WO PCT/EP2017/065228 patent/WO2018007144A1/de active Search and Examination
  • 2017-06-21 PL PL17731880T patent/PL3481985T3/pl unknown
  • 2017-06-21 EP EP17731880.5A patent/EP3481985B1/de active Active
  • 2017-06-21 RU RU2018144703A patent/RU2701256C1/ru active

Patent Citations (6)

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