EP4179137A1 - Wäschepflegegerät mit einer steuerung - Google Patents
Wäschepflegegerät mit einer steuerungInfo
- Publication number
- EP4179137A1 EP4179137A1 EP21736585.7A EP21736585A EP4179137A1 EP 4179137 A1 EP4179137 A1 EP 4179137A1 EP 21736585 A EP21736585 A EP 21736585A EP 4179137 A1 EP4179137 A1 EP 4179137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laundry
- washing liquid
- chamber
- controller
- pump
- 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.)
- Withdrawn
Links
- 238000001514 detection method Methods 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims description 335
- 238000005406 washing Methods 0.000 claims description 276
- 238000000034 method Methods 0.000 claims description 46
- 238000010521 absorption reaction Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 12
- 230000003213 activating effect Effects 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 17
- 230000008569 process Effects 0.000 description 10
- 238000005086 pumping Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000009736 wetting Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012804 iterative process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000004753 textile Substances 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
- D06F15/00—Washing machines having beating, rubbing or squeezing means in receptacles stationary for washing purposes
- D06F15/02—Washing machines having beating, rubbing or squeezing means in receptacles stationary for washing purposes wherein the articles being washed are squeezed by a flexible diaphragm or bag
-
- 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
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/38—Time, e.g. duration
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- 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
- D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
-
- 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
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
Definitions
- the present invention relates to a laundry care appliance with a controller.
- rotatable laundry drums are usually used to hold laundry. Due to the rotation of a corresponding laundry drum, the laundry accommodated in the laundry drum can advantageously be wetted with washing liquid during the washing phase. If the corresponding laundry drum is rotated at a high speed during a final spin phase, the centrifugal force acting on the laundry causes washing liquid bound in the laundry to be expelled from the laundry, and the residual moisture in the laundry can thereby be advantageously reduced.
- drum-operated laundry care devices have a large volume and therefore require a large installation space.
- the use of drum-operated laundry care appliances is often correlated with high consumption of washing liquid and high energy consumption due to the large dead volume.
- laundry care processes in a conventional drum-operated laundry care appliance can often take a very long time.
- the object of the invention is achieved by a laundry care appliance, with a flexible laundry chamber that can be closed in a fluid-tight manner for receiving laundry, a pump which is fluidically connected to the laundry chamber, a pressure sensor for detecting an air pressure in the Laundry chamber and a controller for controlling the pump, the controller being designed to activate the pump in a volume detection step in order to pump air out of the laundry chamber filled with laundry, the controller being designed to detect the time until a pressure sensor detected The air pressure inside the laundry chamber has dropped from a first air pressure value to a second air pressure value, and the controller is designed to determine a volume of the laundry accommodated in the laundry chamber as a function of the recorded time.
- the laundry care appliance according to the present disclosure is in particular a drum-free laundry care appliance, ie a laundry care appliance which does not have a rotatable laundry drum.
- the pump which in particular comprises a liquid ring pump, is designed to convey not only washing liquid but also a mixture of washing liquid and air, or exclusively air, so that a partial vacuum is generated within the fluid-tightly closable laundry chamber, as a result of which the flexible laundry chamber is compressed and rests against the laundry received in the laundry chamber, which takes place in particular when the first air pressure value is reached.
- the first air pressure value corresponds in particular to Air pressure value at which the flexible laundry compartment is in contact with the laundry accommodated in the laundry compartment.
- the first air pressure value is reached faster with a large volume of laundry in the laundry chamber than with a small volume of laundry in the laundry chamber.
- the time is evaluated between the first and second air pressure value, since a particularly advantageous relationship can be detected in this pressure range, independently of the type of laundry used.
- a corresponding direct proportionality between the elapsed time between the first and second air pressure value and the volume of the laundry is based on the fact that at the first air pressure value a small volume of laundry also corresponds to a correspondingly smaller volume of the laundry chamber applied to the laundry.
- an advantageous determination of the volume of laundry can be ensured without the laundry care appliance having to have a rotatable laundry drum for this purpose.
- the information regarding the specific volume of laundry accommodated in the laundry chamber can then be used by the controller to control a large number of parameters of the laundry care appliance or of the laundry care process.
- the pump includes a liquid ring pump which is designed to deliver washing liquid, a washing liquid/air mixture and air.
- a laundry care device is understood to mean a device which is used for laundry care, ie for washing and/or drying laundry, for example.
- a laundry care appliance is understood to mean a household laundry care appliance.
- a laundry care device that is used as part of housekeeping and is used to treat laundry in normal household quantities.
- the controller is designed to carry out the volume detection step before the pump supplies washing liquid into the laundry chamber.
- the volume compression of dry laundry differs significantly from that of wet laundry, since existing cavities in the textile structure would then be filled with washing liquid and can no longer be easily and quickly compressed since the washing liquid has to be removed again first.
- the first air pressure value is lower than atmospheric pressure, in particular at least 1 mbar lower, and/or the second air pressure value is lower than the first air pressure value, in particular at least 500 mbar lower than the first air pressure value.
- the volume detection step is only started when the atmospheric pressure present in the laundry chamber, i.e. 1000 mbar under normal conditions, has been reduced to the first air pressure value by pumping air out through the pump, with the first air pressure value in particular being is at least 1 mbar lower than atmospheric pressure, that is, in particular, is 999 mbar or less.
- the flexible laundry chamber is compressed and the flexible laundry chamber rests against the laundry accommodated in the laundry chamber, so that an effective volume measurement can be carried out once the first air pressure value has been reached.
- the air pressure drops from the first air pressure value to the second air pressure value, and the controller can determine an advantageous proportionality between the time it takes for the second air pressure value to be reached and the volume of the laundry accommodated in the laundry chamber.
- the second air pressure value is in particular between 100 mbar and 200 mbar.
- the flexible and hermetically closable laundry chamber is compressed when the first air pressure value is reached and lies against the laundry received in the laundry chamber.
- the laundry care appliance has a washing liquid tank for holding washing liquid, the pump being fluidically connected to the washing liquid tank, the controller is designed to activate the pump during a first step of a liquid detection step in order to dispense a first quantity of washing liquid to the washing liquid tank of the laundry accommodated in the laundry chamber and to wet the laundry, the controller is designed to activate the pump during a second step of the liquid sensing step, which follows the first step of the liquid sensing step, in order to pump a second quantity of washing liquid from the laundry chamber into the washing liquid tank to be pumped out, and the controller is designed during a third step of the
- Liquid detection step to determine a washing liquid absorption capacity of the laundry in the laundry chamber from the difference between the first amount and second amount of washing liquid.
- washing liquid absorption capacity recorded during the liquid detection step provides the control with advantageous information, which the control can use to optimize further parameters of the laundry care appliance or of the laundry care process.
- the liquid detection step follows the volume detection step, so that in addition to the volume of the laundry received in the laundry chamber detected during the volume detection step, the controller also has the washing liquid absorption capacity of the laundry at its disposal.
- the liquid detection step can also be carried out independently of the volume detection step.
- the liquid acquisition step is based on the effect that during the first step of the liquid acquisition step, the first amount of washing liquid pumped from the washing liquid tank into the laundry chamber is at least partially bound by the laundry received in the laundry chamber and thus retained, so that during the second step of the liquid acquisition step a smaller, second amount of washing liquid is pumped from the laundry chamber back into the washing liquid tank.
- the second amount of washer liquid is less than the first amount of washer liquid and the controller can determine a difference between the first amount of washer liquid and the second amount of washer liquid. Since there is a proportional relationship between the determined difference and the washing liquid absorption capacity of the laundry, the controller can advantageously determine a washing liquid absorption capacity of the laundry in the laundry chamber as a function of the difference.
- the washing liquid tank has at least one washing liquid sensor for detecting a filling level of washing liquid in the washing liquid tank
- the controller is designed to measure the first quantity of washing liquid supplied to the laundry chamber during the first liquid detection step and/or the amount of washing liquid supplied to the washing liquid during the second liquid detection step Washing liquid tank to determine supplied second amount of washing liquid depending on a detected by the washing liquid sensor change in the level of the washing liquid in the washing liquid tank.
- the at least one washing liquid sensor can advantageously detect the amount of washing liquid which is supplied to the washing liquid tank during the first step of the liquid detection step, or which is discharged from the washing liquid tank during the second step of the liquid detection step.
- the washing liquid tank has a plurality of washing liquid sensors which are arranged at different heights of the washing liquid tank in order to detect different fill levels of washing liquid in the washing liquid tank.
- the first and/or second quantity of washing liquid can also be determined by the control as a function of the activation time of the pump during the respective pumping process.
- the controller is designed to activate the pump during the first step of the liquid detection step in order to pump the washing liquid tank completely empty, with the first amount of washing liquid corresponding to the total washing liquid held in the washing liquid tank.
- the pump can be controlled by the controller during the first step of the liquid detection step and only pump a partial quantity of the washing liquid received in the washing liquid tank into the laundry chamber as a first quantity.
- the controller is designed to activate the pump during the second step of the liquid detection step until an air pressure in the laundry chamber detected by the pressure sensor falls below an air pressure threshold value.
- the pressure sensor ensures that the second step of the liquid detection step is terminated when the washing liquid has been completely pumped from the washing chamber back into the washing liquid tank. If the air pressure of the laundry chamber detected by the pressure sensor falls below the air pressure threshold value, the second Amount of free washing liquid not bound by the laundry can be accepted from the laundry chamber.
- the controller can determine the second quantity of washing liquid pumped out during the second step of the liquid detection step as a function of the time required for the air pressure of the laundry chamber detected by the pressure sensor to drop below the air pressure threshold value.
- the controller is designed to repeat the liquid detection step, in particular to repeat it several times, in order to determine an updated washing liquid absorption capacity of the laundry in the laundry chamber.
- the repetition, in particular multiple repetition, of the liquid detection step can improve the accuracy of the determination of the washing liquid absorption capacity of the laundry in the laundry chamber.
- the updated washing liquid absorption capacity of the laundry can be determined as part of an iterative process.
- the washing care appliance has a washing liquid supply device for feeding a third quantity of washing liquid into the laundry care appliance, in particular into the washing liquid tank and/or into the laundry chamber volume of the laundry received in the laundry chamber and/or as a function of the determined washing liquid absorption capacity of the laundry in the laundry chamber, and the controller is designed to activate the washing liquid supply device in order to deliver the determined third quantity of washing liquid to the laundry care appliance, in particular the washing liquid tank and/or or the laundry room.
- the controller has the decisive parameters at its disposal to determine the third quantity of washing liquid supplied to the laundry by the washing liquid supply device advantageous to determine.
- the washing liquid supply device is fluidically connected to the washing liquid tank in particular by a supply line in order to supply the third quantity of washing liquid to the washing liquid tank, the pump in particular supplying washing liquid from the washing liquid tank to the laundry in the laundry chamber.
- the washing liquid supply device is in particular alternatively or additionally fluidically connected directly to the laundry chamber by a further supply line in order to supply the third quantity of washing liquid directly to the laundry in the laundry chamber.
- the further supply line is connected to a laundry care substance supply device for supplying laundry care substance in order to supply the washing liquid, in particular fresh water, together with the laundry care substance, in particular detergent, to the laundry in the laundry chamber.
- the laundry care appliance is a drum-free laundry care appliance.
- a drum-free laundry care appliance includes a laundry care appliance without a rotatable laundry drum for receiving laundry.
- the object of the invention is achieved by a laundry care appliance, with a flexible and fluid-tight closable laundry chamber for holding laundry, a washing liquid tank for holding washing liquid, and a pump which is fluidly connected to the laundry chamber io and the washing liquid tank is connected, and a controller for controlling the pump, wherein the controller is designed to activate the pump during a first step of the liquid detection step in order to supply a first quantity of washing liquid from the washing liquid tank to the laundry accommodated in the laundry chamber and the to wet laundry, that the controller is designed to activate the pump during a second step of the liquid detection step, which follows the first step of the liquid detection step, in order to pump a second amount of washing liquid out of the laundry chamber into the washing liquid tank, and wherein the controller is designed while a third step of the liquid detection step, which follows the second step, assigns a washing liquid absorption capacity to the laundry in the laundry chamber as a function of the difference between the first quantity and the second quantity of the washing liquid determine.
- inventions of the laundry care device according to the first aspect are also embodiments for the laundry care device according to the second aspect.
- the object of the invention is achieved by a method for detecting a volume of laundry in a laundry care appliance, the laundry care appliance having a flexible laundry chamber that can be closed in a fluid-tight manner for receiving laundry, a pump which is fluidically connected to the laundry chamber, a pressure sensor for detecting an air pressure in the laundry chamber, and having a controller for controlling the pump, the method having the following method steps, activating the pump in a volume detection step by the controller in order to pump air out of the laundry chamber filled with laundry, detecting the time until a air pressure within the laundry chamber detected by the pressure sensor has dropped from a first air pressure value to a second air pressure value, by the controller, and determining a volume of the laundry accommodated in the laundry chamber as a function of the detected time by the controller.
- the laundry care appliance has a washing liquid tank for holding washing liquid, with the pump being fluidically connected to the washing liquid tank, and the method has the further method steps, activation of the pump in a first step of a liquid detection step by the controller, in order to to supply a first quantity of washing liquid from the washing liquid tank to the laundry accommodated in the laundry chamber and to wet the laundry, in a second step of the liquid detection step subsequent to the first step, activating the pump by the controller to pump a second quantity of washing liquid from the laundry chamber into pumping out the washing liquid tank, and determining a washing liquid capacity of the laundry accommodated in the laundry chamber in a third step of the liquid detection step subsequent to the second step the control depending on the difference between the first amount and second amount of washing liquid.
- the washing care appliance has a washing liquid supply device for feeding a third quantity of washing liquid into the laundry care appliance, in particular into the washing liquid tank and/or into the laundry chamber
- the method comprises the following method steps, determining a third quantity of washing liquid the control as a function of the specific volume of laundry accommodated in the laundry chamber and/or as a function of the specific washing liquid absorption capacity of the laundry in the laundry chamber, and activation of the washing liquid supply device by the control in order to pump the specific third quantity of washing liquid into the laundry care appliance, in particular into the washing liquid tank and/or in the laundry room.
- the controller is designed to repeat the liquid detection step, in particular to repeat it several times, in order to determine an updated washing liquid absorption capacity of the laundry in the laundry chamber.
- inventions of the laundry care appliance according to the first aspect and the second aspect are also embodiments for the method according to the third aspect.
- the object of the invention is achieved by a method for determining a washing liquid absorption capacity in a laundry care appliance, the laundry care appliance having a flexible and fluid-tight, closable laundry chamber for holding laundry, a washing liquid tank for holding washing liquid, a pump which is fluidly connected to the laundry chamber and is connected to the washing liquid tank, and has a controller for controlling the pump, the method having the following method steps, activating the pump in a first step of a liquid detection step by the controller to pump a first amount of washing liquid from the washing liquid tank of the laundry received in the laundry chamber to supply and wet the laundry, in a second step of the liquid detecting step subsequent to the first step, activating the pump by the controller to pump a second amount of washing liquid pumping t out of the laundry chamber into the washing liquid tank, and determining a washing liquid capacity of the laundry accommodated in the laundry chamber in a third step of the liquid detection step subsequent to the second step by the controller depending on the difference between the first amount and second amount of washing liquid.
- inventions of the laundry care appliance according to the first aspect and the second aspect, and the embodiments of the method according to the third aspect are also embodiments of the method according to the fourth aspect.
- FIG. 1 shows a schematic view of a laundry care appliance according to an embodiment of the present application
- FIG. 2 shows a schematic view of the laundry care appliance shown in FIG. 1 during a volume detection step
- FIG. 3 shows a schematic view of the laundry care appliance shown in FIG. 1 during a liquid detection step
- FIG. 4 shows a schematic representation of a method for detecting a volume of laundry in a laundry care appliance.
- FIG. 1 shows a schematic view of a laundry care appliance according to an embodiment of the present application.
- the laundry care appliance 100 shown in FIG. 1 is designed as a drum-free laundry care appliance 100 which, in contrast to conventional washing machines, therefore has no rotatable laundry drum for receiving the laundry.
- rotation of the rotatable laundry drum ensures effective wetting of the laundry with the washing liquid during the washing process, and effective dehumidification of the laundry during a subsequent spinning process.
- the drum-free laundry care appliance 100 shown in FIG. 1 according to the present application does not have a rotatable laundry drum for receiving the laundry, but rather a flexible laundry chamber 101 that can be closed in a fluid-tight manner for receiving the laundry.
- the laundry chamber 101 is in particular made of a reversibly deformable material, for example an elastomer, in order to ensure the flexibility of the flexible laundry chamber 101 .
- the laundry chamber 101 has an opening 103 which is fluidically connected to a first pump line 105 , the first pump line 105 in turn being fluidly connected to a pump 111 of the laundry care appliance 100 .
- the pump 111 is connected to a washing liquid tank 113 of the laundry care appliance 100 by a second pump line 109 .
- a drain line 115 branches off from the washing liquid tank 113 to a drain 117 .
- the first pump line 105 has a first valve 107-1 which can close the first opening 103 in a fluid-tight manner. In a valve open position, the first valve 107-1 releases the first opening 103 fluidically, and in a valve closed position, the first valve 107-1 closes the first opening 103, with the first opening 103 being located in particular on a chamber underside of the laundry chamber 101 that faces the installation space of the laundry care appliance 100 is arranged.
- the second pump line 109 has a second valve 107 - 2 which can block the second pump line 109 in terms of fluid technology.
- the second valve 107-2 In a valve open position, the second valve 107-2 fluidly releases the second pump line 109, and in a valve closed position, the second valve 107-2 closes the second pump line 109.
- the laundry chamber 101 can in particular have a second opening which is arranged in particular on a chamber top of the laundry chamber 101 facing the installation space of the laundry care appliance 100 .
- the second opening which is present in particular, is fluidly connected to the pump 111 in particular by a third pump line, not shown in FIG. 1, wherein a third valve, not shown in FIG.
- the laundry chamber 101 is thus designed as a laundry chamber 101 that can be closed in a fluid-tight manner.
- the pump 111 is designed to supply washing liquid from the washing liquid tank 113 through the first and second pump lines 105, 109 and through the first opening 103 or through the second opening, in particular, to the laundry chamber 101 during a supply process.
- the pump 111 is also designed to pump fluid out of the laundry chamber 101 through the first opening 103 and through the second opening, which is present in particular, and through the first and second pump lines 105, 109 into the washing liquid tank 113 during a pumping-out process, or to pump the pumped-out fluid from from the washing liquid tank 113 through the drain line 115 to a drain 117 .
- the washing liquid tank 113 has at least one washing liquid sensor 113 - 1 for detecting a fill level of washing liquid in the washing liquid tank 113 .
- the washing liquid tank 113 has a plurality of washing liquid sensors 113 - 1 which are arranged at different heights of the washing liquid tank 113 in order to detect different fill levels of washing liquid in the washing liquid tank 113 .
- the pump 111 is designed to deliver fluid which, in addition to washing liquid, can also include air or a mixture of washing liquid and air.
- the pump 111 can not only pump out the washing liquid received in the laundry chamber 101 after the washing process, but also, in contrast to a drain pump used in conventional washing machines, also pump out air or a mixture of washing liquid and air from the laundry chamber 101 in order to thus creating a partial vacuum in the laundry chamber 101 .
- the pump 111 is formed as a liquid ring pump 111 in particular.
- the laundry chamber 101 has a pressure sensor 101 - 1 which is designed to detect an air pressure value inside the laundry chamber 101 .
- the laundry care appliance 100 also has a washing liquid feed device 119 for feeding washing liquid, in particular fresh water, into the washing liquid tank 113, the washing liquid feed device 119 being fluidically connected to the washing liquid tank 113 by a feed line 121.
- Washing liquid supply device 119 can also be fluidically connected to the laundry chamber 101 by a further supply line in order to supply the washing liquid, in particular fresh water or fresh water together with laundry care substance, directly to the laundry chamber 101.
- the laundry care appliance 100 has a controller 123 which is connected to the pump 111, the valves 107-1, 107-2 by control connections 125, and which is designed to pump 111 and the to control valves 107-1, 107-2. Furthermore, the controller 123 is connected to the pressure sensor 101 - 1 for detecting an air pressure in the laundry chamber 101 and to the washing liquid sensor 113 - 1 for detecting a filling level of washing liquid in the washing liquid tank 113 by a respective control connection 125 .
- FIG. 2 shows a schematic view of the laundry care appliance 100 illustrated in FIG. 1 during a volume detection step.
- the schematic structure of the laundry care appliance 100 shown in FIG. 2 corresponds to the schematic structure of the laundry care appliance 100 shown in FIG.
- the volume detection step illustrated in FIG. 2 for detecting a volume of the laundry accommodated in the laundry chamber 101 is carried out when the laundry is dry carried out, i.e. in particular before the washing liquid is fed into the laundry chamber 101 by the pump 111.
- the controller 123 activates the pump 111 and pumps at a first port 103 and first pump line 105 exposed by the first valve 107-1 and at one exposed by the second valve 107-2 second pump line 109 air from the laundry chamber 101 through the first opening 103 through the first and second pump lines 105, 109 into the washing liquid tank 113 and from there through the drain line 115 into the drain 117.
- the controller 123 monitors the air pressure in the laundry chamber 101 using the pressure sensor 101-1 second air pressure value has dropped, and the controller 123 determines the volume of laundry accommodated in the laundry chamber 101 as a function of the recorded time. In this case, reference values with different volumes depending on different recorded time intervals can be stored in the controller 123 .
- the air pressure drops more quickly from the first air pressure value when the laundry chamber 101 is full of laundry the second air pressure value than with a laundry chamber 101 that is only slightly filled with laundry.
- the first air pressure value is lower than atmospheric pressure, ie 1000 mbar, in particular lower by at least 1 mbar than atmospheric pressure, ie 999 mbar or less.
- the second air pressure value is lower than the first air pressure value, the second air pressure value being in particular between 100 mbar and 200 mbar.
- the volume of the laundry accommodated in the laundry chamber 101 can thus advantageously be determined by the controller 123 as part of the volume detection step.
- the controller 123 can control a large number of other parameters of the laundry care appliance 100 as a function of the detected volume of the laundry accommodated in the laundry chamber 101 .
- FIG. 3 shows a schematic view of the laundry care appliance shown in FIG. 1 during a liquid detection step.
- the schematic structure of the laundry care appliance 100 shown in Fig. 3 corresponds to the schematic structure of the laundry care appliance 100 shown in Fig. 1, except that the fluid guide direction 127 of the fluid pumped out of the laundry chamber 101 by the pump 111, or of the fluid pumped through the pump 111 fluid supplied from the washing liquid tank 113 to the laundry chamber 101 is represented by double arrows.
- the liquid detection step shown in FIG. 3 is for detecting a washing liquid capacity of the laundry of the laundry accommodated in the laundry chamber 101 .
- the liquid detection step shown in FIG. 3 can be carried out after the volume detection step shown in FIG. 2 .
- the liquid detection step shown in FIG. 3 can be performed independently of the volume detection step shown in FIG.
- the controller 123 is designed to activate the pump 111 during a first step of the liquid detection step in order to supply a first amount of washing liquid from the washing liquid tank 113 to the laundry accommodated in the laundry chamber 101 and to wet the laundry.
- the controller 123 is designed to activate the pump 111 during a second step of the liquid detection step, which follows the first step of the liquid detection step, in order to pump a second quantity of washing liquid out of the laundry chamber 101 into the washing liquid tank 113 .
- the controller 123 is designed to determine a washing liquid absorption capacity of the laundry in the laundry chamber 101 as a function of the difference between the first quantity and the second quantity of washing liquid.
- the basis for the difference between the first amount of washing liquid, which is supplied to the laundry chamber 101, and the second amount of washing liquid, which is pumped out of the laundry chamber 101, is that the laundry accommodated in the laundry chamber 101 has a washing liquid capacity, so that at least a small amount of the washing liquid supplied during the first step is bound by the laundry and thereby retained in the laundry chamber 101 during the second step of the liquid detecting step.
- the second amount of washing liquid pumped out of the laundry chamber 101 by the pump 111 during the second step of the liquid detecting step is inevitably smaller than that by the pump 111 during the the first amount of washing liquid supplied from the washing liquid tank 113 to the laundry chamber 101 in the first step of the liquid detecting step.
- the washing liquid tank 113 has at least one washing liquid sensor 113 - 1 for detecting a fill level of washing liquid in the washing liquid tank 113 .
- controller 123 is configured to calculate the first amount of washing liquid supplied to laundry chamber 101 during the first step of the liquid detection step and/or the second amount of washing liquid supplied to washing liquid tank 113 during the second step of the liquid detection step as a function of a value detected by washing liquid sensor 113-1 detected change in the level of the washing liquid in the washing liquid tank 113 to determine.
- the washing liquid tank 113 has a plurality of washing liquid sensors 113 - 1 which detect different fill levels of washing liquid in the washing liquid tank 113 .
- both the first and the second quantity of washing liquid can be detected by the at least one washing liquid sensor 113-1.
- only the first or the second quantity of washing liquid can also be detected by the at least one washing liquid sensor 113-1.
- the controller 123 is designed to activate the pump 111 during the first step of the liquid detection step in order to pump the washing liquid tank 113 completely empty, with the first amount of Washing liquid corresponds to the total washing liquid contained in the washing liquid tank 113 .
- the controller 123 is designed to activate the pump 111 during the second step of the liquid detection step until an air pressure in the laundry chamber 101 detected by the pressure sensor 101-1 falls below a pressure threshold value.
- the controller 123 is designed to repeat the first, second and third step of the liquid detection step, in particular to repeat it several times, in order to determine an updated washing liquid absorption capacity of the laundry in the laundry chamber 101 .
- This is due in particular to the fact that during the initial filling of the laundry chamber 101 with the initial first quantity of washing liquid, under certain circumstances it is not possible to completely wet all of the laundry items accommodated in the laundry chamber 101 .
- the wash liquid capacity of the laundry determined based on the initial difference between the first and second amounts of wash liquid can be updated by subsequent repeated differences between repeated first and second amounts of wash liquid.
- the washing liquid absorption capacity of the laundry in the laundry chamber 101 determined by the controller 123 can be used in a subsequent step, for example, to optimize the amount of washing liquid required for complete wetting of the laundry and fed into the laundry chamber 101 by the pump 111.
- the washing liquid feed device 119 is designed to feed a third quantity of washing liquid into the laundry care appliance 100, in particular through the feed line 121 into the washing liquid tank 113 and/or through a further feed line (not shown in Fig. 3) into the laundry chamber 101.
- the controller 123 is designed to determine the supplied third quantity of washing liquid as a function of the exemplary embodiment illustrated in FIG volume of the laundry accommodated in the laundry chamber 101 and/or as a function of the washing liquid absorption capacity of the laundry in the laundry chamber 101 determined according to the exemplary embodiment illustrated in FIG.
- the controller 123 is designed here to activate the washing liquid supply device 119 in order to supply the specific third quantity of washing liquid to the laundry care appliance 100, in particular to the washing liquid tank 113 and/or the laundry chamber 101.
- a particularly advantageously optimized wetting of the laundry with washing liquid can thus be ensured.
- Fig. 4 shows a schematic representation of a method for detecting a volume of laundry in a laundry care appliance 100.
- the method 200 includes the activation 201 of the pump 111 in a volume detection step by the controller 123 in order to pump air out of the laundry chamber 101 filled with laundry.
- the method 200 comprises the detection 203 of the time until an air pressure detected by the pressure sensor 101-1 inside the laundry chamber 101 has dropped from a first air pressure value to a second air pressure value by the controller 123.
- the method 200 comprises the determination 205 of a volume of laundry received in the laundry chamber 101 as a function of the recorded time by the controller 123.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020208729.6A DE102020208729A1 (de) | 2020-07-13 | 2020-07-13 | Wäschepflegegerät mit einer Steuerung |
PCT/EP2021/067289 WO2022012890A1 (de) | 2020-07-13 | 2021-06-24 | Wäschepflegegerät mit einer steuerung |
Publications (1)
Publication Number | Publication Date |
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EP4179137A1 true EP4179137A1 (de) | 2023-05-17 |
Family
ID=76730559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21736585.7A Withdrawn EP4179137A1 (de) | 2020-07-13 | 2021-06-24 | Wäschepflegegerät mit einer steuerung |
Country Status (4)
Country | Link |
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EP (1) | EP4179137A1 (de) |
CN (1) | CN116194629A (de) |
DE (1) | DE102020208729A1 (de) |
WO (1) | WO2022012890A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021206228A1 (de) | 2021-06-17 | 2022-12-22 | BSH Hausgeräte GmbH | Wäschepflegegerät mit einer Verformungseinrichtung |
DE102022201562A1 (de) | 2022-02-16 | 2023-08-17 | BSH Hausgeräte GmbH | Wäschepflegegerät mit einer Aktoreinrichtung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2650509A1 (de) | 1976-11-04 | 1978-05-18 | Emanuel Alder | Vakuum-waschmaschine |
DE102009002957A1 (de) | 2009-05-08 | 2010-11-11 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zur Behandlung von Wäsche in einer Waschmaschine bei wechselndem Druck |
SE535394C2 (sv) | 2010-10-27 | 2012-07-24 | Roderinno Ab | Tvättmaskin innefattande en tvättpåse |
SE539513C2 (en) * | 2016-02-09 | 2017-10-03 | Roderinno Ab | Washing machine |
EP3489403B1 (de) | 2016-07-22 | 2022-02-09 | Panasonic Intellectual Property Management Co., Ltd. | Waschmaschine |
JP6906136B2 (ja) * | 2016-07-22 | 2021-07-21 | パナソニックIpマネジメント株式会社 | 洗濯機 |
TW202012735A (zh) * | 2018-05-31 | 2020-04-01 | 日商松下知識產權經營股份有限公司 | 洗衣機 |
CN108560188A (zh) * | 2018-07-13 | 2018-09-21 | 韩建龙 | 一种柔性袋式挤压揉搓型全自动洗衣机及其洗涤方法 |
-
2020
- 2020-07-13 DE DE102020208729.6A patent/DE102020208729A1/de active Pending
-
2021
- 2021-06-24 WO PCT/EP2021/067289 patent/WO2022012890A1/de unknown
- 2021-06-24 EP EP21736585.7A patent/EP4179137A1/de not_active Withdrawn
- 2021-06-24 CN CN202180061436.XA patent/CN116194629A/zh active Pending
Also Published As
Publication number | Publication date |
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CN116194629A (zh) | 2023-05-30 |
WO2022012890A1 (de) | 2022-01-20 |
DE102020208729A1 (de) | 2022-01-13 |
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