CN111945379B - Washware care implement with control device - Google Patents
Washware care implement with control device Download PDFInfo
- Publication number
- CN111945379B CN111945379B CN202010411669.5A CN202010411669A CN111945379B CN 111945379 B CN111945379 B CN 111945379B CN 202010411669 A CN202010411669 A CN 202010411669A CN 111945379 B CN111945379 B CN 111945379B
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- volume
- laundry
- washing liquid
- liquid
- washing
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- 239000007788 liquid Substances 0.000 claims abstract description 289
- 238000005406 washing Methods 0.000 claims abstract description 257
- 238000001514 detection method Methods 0.000 claims abstract description 100
- 239000004753 textile Substances 0.000 claims abstract description 84
- 230000003213 activating effect Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 50
- 238000005086 pumping Methods 0.000 claims description 15
- 238000005119 centrifugation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 6
- 238000009736 wetting Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 2
- 239000003513 alkali Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 13
- 238000007689 inspection Methods 0.000 description 8
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012804 iterative process Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- D06F33/34—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
- 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
- D06F2103/02—Characteristics of laundry or load
- D06F2103/06—Type or material
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/02—Water supply
-
- 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
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The present invention relates to a laundry care appliance, comprising: comprises an alkali liquor container connected with a discharge opening and an input opening through a liquid pipeline; a laundry drum; a washing liquid supply device; a pump configured to pump the washing liquid out into the liquid line through the discharge opening, the pumped washing liquid being fed to the lye container through the input opening; a volume detecting device for detecting the volume of the washing liquid which is not combined with the washings; a control device; a textile detection device and/or a weight detection device, a control device determining the amount of washing liquid supplied to the lye container based on the textile type and/or weight, activating the washing liquid supply device during a period of time, supplying the determined amount of washing liquid to the lye container, activating a pump during the period of time to circulate the supplied washing liquid through the liquid line, disabling the washing liquid supply device when the detected volume exceeds a volume reference value, the volume reference value being determined according to the textile type and/or weight.
Description
Technical Field
The present invention relates to a laundry care appliance having a control device.
Background
In conventional laundry care appliances, the water absorption capacity of the laundry loaded into the laundry drum is generally not known for the control device of the laundry care appliance. In order to ensure effective laundry care of the laundry to be treated in this case, the laundry is usually washed supersaturated, so that a greater amount of washing liquid is fed to the laundry than may be necessary for effective laundry care. Accordingly, consumption of the laundry care materials increases due to the laundry having supersaturation of the wash liquid, and increased thermal energy must also be expended to heat a greater amount of the wash liquid.
A laundry care appliance with a control device is disclosed in DE 10 2016 212 490 A1.
A use process for laundry in a program-controlled washing machine is disclosed in EP 2 348 A1.
Disclosure of Invention
The object of the present invention is to provide a laundry care appliance in which an advantageous saturation of the laundry with the washing liquid is ensured during the laundry care process.
According to a first aspect, the object of the invention is achieved by a laundry care appliance having: an lye container for receiving a washing liquid, wherein the lye container has a discharge opening and an input opening, which are fluidically connected by a liquid line; a laundry drum for receiving laundry; a washing liquid supply means for supplying a washing liquid into the lye container; a pump, the pump configured to: pumping washing liquid into the liquid line via the discharge opening and re-feeding the pumped washing liquid to the lye container via the input opening in order to wet the laundry in the laundry drum; volume detection means for detecting the volume of the washing liquid not bound to the laundry; and a control device for controlling the pump and the washing liquid supply device, wherein the washing care appliance has a textile detection device for detecting a textile type/cloth type (textilep) of the washing received in the washing drum and/or a weight detection device for detecting a weight of the washing received in the washing drum, wherein the control device is configured for: determining the amount of washing liquid to be supplied by the washing liquid supply device to the lye container on the basis of the detected textile type of the washing and/or on the basis of the detected weight of the washing, wherein the control device is configured for: activating the washing liquid supply device during a period of time and supplying the determined amount of washing liquid to the lye container, wherein the control device is configured for: activating a pump during the time period to circulate the pumped washing liquid via the liquid line, wherein the volume detection device is configured to: detecting a volume of wash liquid not bound to the wash load, and wherein the control device is configured to: the washing liquid supply is deactivated when the detected volume exceeds a volume reference value, wherein the volume reference value is determined as a function of the detected textile type and/or the detected weight of the laundry.
The following technical advantages are achieved: by comparing the detected volume with the volume reference value, the desired optimal saturation value of the laundry can be reached. Therefore, the laundry is prevented from having supersaturation of the washing liquid, and the detergent consumption and the heat energy consumption can be limited.
In order to determine the amount of washing liquid to be supplied to the lye container particularly advantageously, the amount of washing liquid to be supplied is determined by the control device on the basis of the detected textile type of the laundry and/or on the basis of the detected weight of the laundry.
In particular, the amount of washing liquid to be supplied is determined on the basis of the type of textiles of the laundry which are detected by the textile detection device. In particular, the amount of the washing liquid to be supplied is determined based on the weight of the laundry detected by the weight detecting means. In particular, the amount of washing liquid to be fed is determined on the basis of the type of textiles detected by the textile detection means of the laundry and on the basis of the weight of the laundry detected by the weight detection means.
Depending on the required accuracy of the manner of determining the amount of washing liquid to be supplied, the laundry care appliance can have only one textile detection device, only one weight detection device, or one textile detection device and one weight detection device in order to carry out the respective determination steps.
Disabling (Deaktivieren) the washing liquid supply means in connection with the end of the washing liquid supply is determined by the condition: the volume of wash liquid not bound to the wash load exceeds the volume reference. The volume reference value is determined here as a function of the type of textile of the laundry detected by the textile detection device and/or as a function of the weight of the laundry detected by the weight detection device.
The volume reference value can be determined in particular from the type of textiles of the laundry which is detected by the textile detection device. In particular, the volume reference value can be determined in particular from the weight of the laundry detected by the weight detection device. In particular, the volume reference value can be determined as a function of the type of textile of the laundry detected by the textile detection means and as a function of the weight of the laundry detected by the weight detection means.
By supplying the determined amount of washing liquid to the laundry, the laundry is advantageously saturated/saturated with the washing liquidA part of the supplied washing liquid quantity is not bound by the washings but flows out into the lye container and can be detected by the volume detection device.
Thus, a correlation (korpassage) between the saturation of the laundry and the volume of the washing liquid not bound to the laundry can be obtained. When the detected volume exceeds the volume reference value, the desired saturation of the laundry is reached and the washing liquid supply is deactivated.
The volume reference value is determined in particular as a function of the desired saturation of the laundry, in particular as a function of 10%, 25%, 50%, 75% or 100%. If, for example, only 50% saturation of the laundry is desired, the volume reference value may be halved, for example.
By the targeted precise setting of the laundry to be treated with saturation of the washing liquid, a resource-friendly and energy-saving washing process can be ensured, and furthermore an optimal washing action is achieved on the basis of an optimal wetting of the laundry.
Laundry care appliances are understood to be appliances used for the care of laundry, such as washing machines or laundry dryers. In particular, such laundry care appliances are understood as household laundry care appliances. Namely, such laundry care appliances: the laundry care appliance is used in the context of household and is used for treating household-use laundry.
In an advantageous embodiment of the laundry care appliance, the control device is configured for: the time period is repeated in order to re-determine the amount of wash liquor, re-supply the determined amount of wash liquor to the lye container, re-detect the volume of wash liquor not bound to the wash liquor when the detected volume is below an (unteschreiten) volume reference value, and deactivate the wash liquor supply when the sum of the volumes and the re-detected volume exceeds the volume reference value.
The following technical advantages are achieved: the control device can incrementally control the supply of washing liquid to the lye container for a period of time until the sum of the volumes of washing liquid not bound to the laundry exceeds the volume reference value, which results in the deactivation of the washing liquid supply device.
In an advantageous embodiment of the laundry care appliance, the control device is configured for: determining the redetermined amount of wash liquid from the difference between the volume reference value and the volume detected during the time period, and/or the control means is configured to: the re-determined amount of wash liquor is determined based on the detected textile type of the wash liquor and/or based on the detected weight of the wash liquor.
The following technical advantages are achieved: the redetermined amount of the laundry may be smaller than the amount of the laundry determined during the period of time, so that the laundry can be prevented from having supersaturation of the laundry with the laundry. This is achieved by: in determining the redefined amount of washing liquid, the difference between the volume of washing liquid that has been supplied to the laundry during the time period and the volume reference value is taken into account and/or the textile type and/or weight of the laundry is taken into account.
In an advantageous embodiment of the laundry care appliance, the control device is configured for: when the volume flow value determined from the detected volume is lower than the volume flow minimum value, the pump is deactivated during the period of time in order to end the circulating pumping of the washing liquid through the liquid line.
The following technical advantages are achieved: by being below the volumetric flow minimum, the end of the circulation pumping process can be indicated to the control device. The detected volume flow falling below the volume flow minimum value indicates to the control device: there is a very small amount of wash liquid available for the circulation pump and thus the circulation pump process can be ended.
In an advantageous embodiment of the laundry care appliance, the laundry care appliance has a feed sensor (Zuf u hrs sensor) which is configured to: the amount of the washing liquid supplied by the washing liquid supply device is detected.
The following technical advantages are achieved: the control device is informed of the available amount of washing liquid supplied during the respective time period by means of the supply sensor.
In an advantageous embodiment of the laundry care appliance, the weight detection device comprises: a weighing device for weighing the laundry received in the laundry drum, a device for detecting the dip (Absenkung) of the vibrating system of the laundry drum and/or a device for detecting the power parameter of the drum drive of the laundry drum.
The following technical advantages are achieved: the weight detection means ensures an advantageous weight detection of the laundry.
In an advantageous embodiment of the laundry care appliance, the laundry care appliance has program selection means for selecting a laundry care program from a plurality of laundry care programs, wherein the textile detection means are configured for: the textile type of the wash is detected based on the selected wash care program.
The following technical advantages are achieved: the textile inspection device may perform an efficient inspection of the textile type based on the selected laundry care program.
In an advantageous embodiment of the laundry care appliance, the textile detection device comprises an optical sensor for detecting a material property of a textile type of the laundry, wherein the textile detection device is configured for: the textile type of the wash is detected based on the detected material properties.
The following technical advantages are achieved: an effective and direct detection of the textile type of the laundry is ensured.
In an advantageous embodiment of the laundry care appliance, the laundry care appliance has a drum drive for rotating the laundry drum, and the control device is configured for: the drum drive is activated during the circulating pumping of the washing liquid via the liquid line in order to rotate the laundry drum at one revolution, in particular at an abutment revolution (angeldrehzahl), in particular at an abutment revolution of between 100 revolutions/min and 200 revolutions/min, in order to bring the laundry against the laundry drum.
The following technical advantages are achieved: by the rotation of the laundry drum during the circulation pumping process, a particularly effective wetting of the laundry by the washing liquid can be ensured. In particular, the laundry drum can be rotated at an abutment revolution, in particular between 100 and 200 revolutions per minute. When the laundry drum rotates at the abutment revolution, the laundry is abutted against the laundry drum, so that it can be ensured that the circulating pumped washing liquid wets the laundry particularly advantageously.
In an advantageous embodiment of the laundry care appliance, the volume detection device is configured for: the volume of the washing liquid circulated by the pump via the liquid line is detected during the period of time so as to detect the volume of the washing liquid not bound to the laundry.
The following technical advantages are achieved: the volume detection means may detect a corresponding volume of wash liquid not bound to the wash load directly during the circulation pumping process during said period of time. In particular, the volume of the washing liquid pumped by the circulation corresponds to the volume of the washing liquid not bound to the laundry.
In an advantageous embodiment of the laundry care appliance, the volume detection means comprise a flow sensor arranged in the liquid line for detecting a volume flow of the washing liquid pumped via the liquid line, and/or the volume detection means comprise a power detection element for detecting an electrical power value of the pump.
The following technical advantages are achieved: by means of said element, an effective detection of the washing liquid volume by the volume detection means can be ensured. If the volume detection means comprise a flow sensor, the volume of washing liquid pumped by the pump through the liquid line, and thus the volume of washing liquid not bound to the laundry, can advantageously be detected from the detected volumetric flow of washing liquid pumped by the pump through the liquid line.
If the volume detection means comprise a power detection element for detecting the electrical power value of the pump, the power value detected by the power detection element can advantageously be correlated with the volumetric flow of washing liquid pumped by the pump through the liquid line in order to perform an advantageous volume detection, whereby the volume pumped by the pump can be obtained as a function of time and thus the volume of washing liquid not bound to the washing can be detected.
In an advantageous embodiment of the laundry care appliance, the laundry care appliance has a drum drive for rotating the laundry drum, and the control device is configured for: activating the drum drive after circulating the washing liquid through the liquid line to subject the washing liquid bound to the laundry to free centrifugation (freischleuderm) to obtain a free centrifuged amount of washing liquid, wherein the volume detection means is configured to: the volume of the washing liquid which is free-centrifugally separated and circulated and pumped is detected, so that the volume of the washing liquid which is not bound to the laundry is detected.
The following technical advantages are achieved: the volume of washing liquid which is not bound to the laundry can be determined particularly advantageously by detecting the volume of washing liquid which is free to be centrifuged. After the circulation of the washing liquid, the washing drum is rotated and the washing liquid which is not bound to the washing, which accumulates in the lye container, is subjected to free centrifugation, wherein a corresponding volume of the washing liquid which is free centrifuged can advantageously be detected by the volume detection means, in particular a level sensor. In particular, the volume of the washing liquid which is free to be centrifuged corresponds to the volume of the washing liquid which is not bound to the laundry.
In an advantageous embodiment of the laundry care appliance, the volume detection means comprise a level sensor arranged in the lye container, in particular in a lower region of the lye container facing the discharge opening, for detecting the level of the washing liquid located in the lye container.
The following technical advantages are achieved: the volume of the washing liquid, in particular the washing liquid which has been centrifuged freely, can be determined directly in the lye container by means of a level sensor, in particular a pressure sensor, arranged in the lye container for detecting the level of the washing liquid located in the lye container.
In an advantageous embodiment of the laundry care appliance, the control device is configured for: determining a proportional relationship between the amount of washing liquid supplied to the lye container and the volume of washing liquid free to be centrifuged during said time period, wherein the textile inspection device is configured for: the textile type of the laundry is detected based on the determined proportionality, and/or wherein the volume reference value is determined from the determined proportionality, from the detected textile type of the laundry and/or from the detected weight of the laundry.
The following technical advantages are achieved: the corresponding proportional relationship between the supplied washing liquid amount and the centrifuged washing liquid volume enables a more accurate detection of the textile type (or volume reference value) of the laundry than if the centrifuged washing liquid volume was merely compared with the volume reference value.
According to a second aspect, the object of the invention is achieved by a method for caring for laundry in a laundry care appliance, wherein the laundry care appliance has a lye container for receiving a washing liquid, wherein the lye container has a discharge opening and an inlet opening, which are fluidically connected by a liquid line, wherein the laundry care appliance has: a laundry drum for receiving laundry; a washing liquid supply means for supplying a washing liquid into the lye container; a pump, the pump configured to: pumping washing liquid into the liquid line via the discharge opening and re-feeding the pumped washing liquid to the lye container via the input opening in order to wet the laundry in the laundry drum; volume detection means for detecting the volume of the washing liquid to which the non-washed objects are bound; a textile detection device for detecting a textile type of laundry received in the laundry drum and/or a weight detection device for detecting a weight of the laundry received in the laundry drum; and a control device for controlling the pump and the washing liquid supply device, wherein the method comprises the steps of: determining, by the control device, an amount of wash liquor to be supplied by the wash liquor supply device to the lye container based on the detected textile type of the wash liquor and/or based on the detected weight of the wash liquor; activating, by the control device, the washing liquid supply device during a period of time in order to supply the determined amount of washing liquid to the lye container; activating, by the control device, the pump during said period of time in order to circulate the supplied washing liquid through the liquid line; detecting the volume of the washing liquid which is not combined with the washings by a volume detection device; when the detected volume exceeds the volume reference value, the control device deactivates the washing liquid supply device after the time period, wherein the volume reference value is determined according to the detected textile type of the washing and/or the detected weight of the washing.
The following technical advantages are achieved: it is achieved that the laundry to be treated has an advantageous saturation of the washing liquid.
In an advantageous embodiment of the method, the time period is repeated by the control device in order to redetermine the amount of wash liquor, to redefine the determined amount of wash liquor to the lye container, to redetect the volume of wash liquor that is not bound to the wash liquor, when the detected volume is below the volume reference value, and to deactivate the wash liquor supply device when the sum of the volume and the redetected volume exceeds the volume reference value.
The following technical advantages are achieved: the time period can be repeated by the control device for a long time until the sum of the detected volumes exceeds the volume reference value, so that an advantageous saturation of the laundry can be approached in the context of an iterative process.
In an advantageous embodiment of the method, the detection of the volume of washing liquid not bound to the laundry comprises: detection of the volume of the washing liquid circulated and pumped by the pump via the liquid pipeline by the volume detection device.
The following technical advantages are achieved: by detecting the volume of the washing liquid pumped by the circulation, the volume of the washing liquid which is not bound to the laundry can be detected particularly advantageously.
In an advantageous embodiment of the method, the laundry care appliance has a drum drive for rotating the laundry drum, and the method comprises the steps of: activating, by the control device, the drum driving device during the period of time after circulating the washing liquid through the liquid line, so as to subject the washing liquid coupled to the laundry to free centrifugation and obtain the amount of the washing liquid subjected to free centrifugation; the volume of the washing liquid which is free to be centrifuged is detected by the volume detecting means so that the volume of the washing liquid which is not bound to the laundry is detected.
The following technical advantages are achieved: by detecting the volume of washing liquid which is free to centrifuge, the volume of washing liquid which is not bound to the laundry can be detected particularly advantageously.
Drawings
Embodiments of the present invention are shown in the drawings and described in more detail below. The drawing shows:
fig. 1 shows a schematic view of a laundry care appliance;
fig. 2 shows a schematic view of a laundry care appliance with a control device;
FIG. 3 shows a diagrammatic view of a washware care process, according to an embodiment;
Fig. 4 shows a diagrammatic view of a detection process of the electric power value of the pump of the laundry care process;
fig. 5 shows a schematic illustration of a method for caring for laundry in a laundry care appliance.
Detailed Description
Fig. 1 shows a schematic view of a generic laundry care appliance 100, such as a washing machine. The laundry care appliance 100 comprises a wash-in housing 101, in which wash-in housing 101 a detergent or other liquid substance can be loaded. 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 laundry care appliance with a control device. The laundry care appliance 100 has an alkaline solution container 105 for receiving a washing solution and has a laundry drum 107 for receiving laundry. The laundry drum 107 has a drum underside 109. The lye container 105 has a discharge opening 111. The cleaning solution care implement 100 has an input opening 113. The discharge opening 111 is fluidically connected to the inlet opening 113 via a liquid line 115, wherein a pump 117 for pumping the washing liquid via the liquid line 115 is arranged in the liquid line 115. The pump 117 can pump washing liquid from the lye container 105 via the discharge opening 111 into the liquid line 115 during a circulation pumping process, which is not shown in fig. 2, and re-feed the pumped washing liquid to the lye container 105 and the laundry drum 107 via the liquid line 115 and via the input opening 113. Thereby, fresh wash liquid may be effectively circulated pumped via the liquid line 115 and re-fed to the laundry in the laundry drum 107 during the laundry care process.
The laundry care appliance 100 furthermore comprises a control device 119, which control device 119 is connected to the pump 117 via a first control connection 121, and which control device 119 is connected to a drum drive 123 for rotating the laundry drum 107 via a second control connection 125.
The control device 119 is furthermore connected via a third control connection 127 to a washing liquid supply device 129 for supplying washing liquid into the lye container 105, wherein the washing liquid supply device 129 is connected via a supply line 131 to the lye container 105.
The control device 119 is furthermore connected via a fourth control connection 133 to a volume detection device 135 for detecting the volume of washing liquid which is not bound to the laundry.
The volume detection means 135 may in particular comprise a flow sensor arranged in the liquid line 115 as shown in fig. 2 for detecting the volumetric flow of the washing liquid pumped through the liquid line 115.
The volume detection means 135 may comprise, inter alia, a level sensor arranged in the lye container 105, in particular in a lower region of the lye container 105 facing the discharge opening 111, for detecting the level of the washing liquid located in the lye container 105.
The volume detection means 135 may comprise, inter alia, a power detection element for detecting the electrical power value of the pump 117. The power detection element is here arranged in particular in the pump 117 or is connected to the pump 117.
The laundry care appliance 100 furthermore comprises a weight detection device 137 for detecting the weight of the laundry received in the laundry drum 107, said weight detection device 137 being connected to the control device 119 via a fifth control connection 139.
The weight detection device 137 comprises in particular: a weighing device for weighing the laundry received in the laundry drum 107, a device for detecting the sinking of the vibrating system of the laundry drum 107 and/or a device for detecting the power parameter of the drum drive 123 of the laundry drum 107.
The laundry care appliance 100 furthermore comprises a textile detection device 141 for detecting the type of textiles of the laundry received in the laundry drum 107, which textile detection device 141 is connected to the control device 119 via a sixth control connection 143.
Textile inspection device 141 includes, among other things, an optical sensor for inspecting material properties of a textile type of laundry, wherein textile inspection device 141 is configured to: the textile type of the wash is detected based on the detected material properties.
Textile inspection device 141 is specifically configured to: the textile type of the laundry is detected based on the selected laundry care course, wherein the laundry care appliance 100 has a course selection device, not shown in fig. 2, for selecting one laundry care course from a plurality of laundry care courses.
The laundry care appliance 100 furthermore comprises a discharge line 128, which discharge line 128 is fluidically connected to the liquid line 115. The pump 117 is configured to: during the pumping-out process, which is not shown in fig. 2, washing liquid is pumped out of the washing care implement 100 via the drain opening 111 from the lye container 105, via the liquid line 115 and via the drain line 128.
Fig. 3 shows a diagrammatic view of a laundry care process according to a first embodiment.
Diagram (a) of fig. 3 shows, for different textile types, the proportional relationship between the saturation of the laundry according to the weight of the laundry detected by the weight detection means 137, said saturation being provided along the ordinate axis 145 and said weight being provided along the abscissa axis 147.
The first curve 149 shown in diagram (a) of fig. 3 shows the linear dependence that exists for a first textile type (in particular a fleece), between the saturation of the first textile type and the weight of the first textile type.
The second curve 151 shown in diagram (a) of fig. 3 shows the linear dependence between the saturation of the second textile type and the weight of the second textile type, which exists for the second textile type (in particular polyester).
The third curve 153 shown in the diagram (a) of fig. 3 shows the dependency between the saturation and the weight of the laundry, which is stored for the laundry care program selected by the user.
If the control means 119 knows the specific weight of the laundry detected by the weight detection means 137 and if the control means knows the specific textile type of the laundry detected by the textile detection means 141, the control means 119 can determine by reference comparison the amount of washing liquid associated with the specific textile type and the specific weight, which is fed by the washing liquid feeding means 129 to the lye container 105.
Textile inspection device 141 may determine the type of textile, in particular, based on a laundry care program selected by the user, or textile inspection device 141 may detect the type of textile by means of an optical sensor.
Diagrams (b), (c) and (d) of fig. 3 show diagrams of the amount of washing liquid supplied by the washing liquid supply device 129 (see diagram b), the number of revolutions of the rotating washing drum 107 (see diagram c) and the volume of washing liquid not bonded to the washing (see diagram d) over time, all plotted along the respective ordinate axes 145 according to time, which is provided along the respective abscissa axes 147.
The fourth curve 155 shown in diagram (b) of fig. 3 shows the time profile of the amount of washing liquid 157 fed by the washing liquid feeding means 129 to the lye container 105 during a time period 159, wherein the amount of washing liquid 157 has been determined by the control means 119 according to diagram (a).
A fifth curve 156 shown in the diagram (c) of fig. 3 shows a time-varying curve of the number of revolutions of the laundry drum 107 driven by the drum driving device 123.
The sixth curve 158 shown in the diagram (d) of fig. 3 shows a time-varying curve of the volume of the washing liquid which is not coupled to the laundry, which is detected by the volume detecting device 135, during the time period 159.
During a first time interval 159-1 of the time period 159, washing liquid is fed to the lye container 105 and the fed washing liquid is fed to the washing by means of the pump 117 by means of a circulation pump in order to wet the washing by means of the washing liquid.
After the circulation pumping during the first time interval 159-1, a volume 161-1 of the washing liquid not bound to the laundry is detected by the volume detecting means 135 during an immediately following second time interval 159-2 of the time period 159.
In particular, the pump 117 can be activated again in order to evaluate whether there is still washing liquid that is not bound to the laundry, which can be determined by the volume detection element 135. The control device 119 is here designed in particular for: when the detected volume 161-1 is below the volume minimum, the pump 117 is deactivated during the time period 159 in order to end the circulation pumping of the washing liquid via the liquid line 115.
During an optional third time interval 159-3 of the time period 159 immediately following the second time interval 159-2, the number of revolutions of the laundry drum 107 is increased.
During a fourth time interval 159-4 of the time period 159 immediately following the third time interval 159-3, the number of revolutions of the laundry drum 107 is increased so as to subject the washing liquid coupled to the laundry to free centrifugation and obtain the amount of the washing liquid which is free centrifuged. The volume detection device 135 is configured to: the volume 161-2 of the washing liquid which was separated by free centrifugation was detected.
During a fifth time interval 159-5 of the time period 159 immediately following the fourth time interval 159-3, the pump 117 is re-activated so as to circulate the free centrifuged washing liquid, advantageously wetting the laundry with the free centrifuged washing liquid.
Here, the control device 119 compares the detected volume 161-2 of the washing liquid which is free-centrifuged with a volume reference value 163 which is not shown in fig. 3, and deactivates the washing liquid supply device 129 when the detected volume 161-2 of the washing liquid which is free-centrifuged exceeds the volume reference value 163. Thereby, it is ensured that the laundry has an advantageous saturation of the washing liquid.
Here, the volume reference value 163 is determined according to the type of textile of the laundry detected by the textile detection means 141 and/or according to the weight of the laundry detected by the weight detection means 137.
If the detected volume 161-2 is below the volume reference value 163, the control means 119 repeat the time period 159 in order to re-determine the amount of wash liquid 157, re-supply the determined amount of wash liquid 157 to the lye container 105, re-detect the volume 161-2 of wash liquid not bound to the wash load, and deactivate the wash liquid supply means 129 when the sum of the volume 161-2 and the re-detected volume 161-2 exceeds the volume reference value 163.
Thus, the washing liquid may be fed to the laundry stepwise to ensure that the laundry has an effective saturation of the washing liquid.
The volume detection element 135 here comprises in particular a level sensor arranged in the lye container 105, in particular in a lower region of the lye container 105 facing the discharge opening 111, for detecting the level of the washing liquid located in the lye container 105.
Although in the embodiment shown in fig. 3, the volume 161-2 of the washing liquid which is free to be centrifuged is detected by the volume detecting means 135 as the volume 161-2 of the washing liquid which is not bound to the washing object, it is alternatively possible that the volume 161-1 of the washing liquid which is circulated and pumped by the pump 117 via the liquid line 115 is detected by the volume detecting means 135 as the volume 161-2 of the washing liquid which is not bound to the washing object.
In this case, the volume detection means 135 comprise, inter alia, a flow sensor arranged in the liquid line 115 for detecting the volumetric flow of the washing liquid pumped via the liquid line 115, and/or the volume detection means 135 comprise a power detection element for detecting the electrical power value of the pump 117.
Thus, the target accurate saturation of the laundry is adjusted, and the laundry can be prevented from having undersaturation or oversaturation of the washing liquid. Only the amount of washing liquid that is just required for an advantageous laundry care process is fed to the laundry. Therefore, optimal washing liquid consumption and energy consumption of the laundry care appliance 100 can be ensured.
Furthermore, particularly advantageous laundry care results are ensured by optimal saturation of the laundry.
Fig. 4 shows a diagrammatic view of a detection process of the electric power value of the pump of the laundry care process.
According to the present disclosure, the volume detecting means 135 for detecting the volumes 161-1, 161-2 of the washing liquid not coupled to the laundry may include a power detecting element for detecting the electric power value of the pump 117.
Because the pump 117 pumps the washing liquid in a volumetric flow through the liquid line 115 according to the electric power value of the pump 117 during the circulation pumping process, there is a correlation between the electric power value of the pump 117 and the volumetric flow. The volumetric flow can be determined based on the detected electrical power value of the pump 117. In case the time is known, the determined volume flow may be converted into a volume 161-1 of the washing liquid which is circulated and pumped by the pump 117.
Fig. 4 shows a variation of the electric power value (in particular the current) of the pump 117 provided along the ordinate axis 145 as a function of time provided along the abscissa axis 147. As is known from the first and second power curves 165, 167, the electrical power value drops when no more washing liquid is being delivered by the pump 117.
As is known from the first power curve 165, in the case of determining the first integrated value 169 based on the first power curve 165, the power peak occurring after the first drop in the electric power value is no longer considered.
As is known from the second power curve 167, in the case of determining the second integrated value 171 based on the second power curve 167, further power peaks occurring after the first drop in the electric power value are additionally taken into account, so that the second integrated value 171 is higher than the first integrated value 169.
Accordingly, the respective volumes 161-1, 161-2 of wash liquor that are not bound to the wash load may be detected by the control device 119 via the selected first or second integrated values 169, 171, as desired.
Fig. 5 shows a schematic illustration of a method for caring for laundry in a laundry care appliance.
As a first method step, the method 200 comprises: the amount 157 of washing liquid to be supplied by the washing liquid supply 129 to the lye container 105 is determined 201 by the control device 119 based on the detected textile type of the washing and/or based on the detected weight of the washing.
As a second method step, the method 200 comprises: the wash liquid supply means 129 are activated 203 by the control means 119 during a time period 159 in order to supply the determined amount 157 of wash liquid to the lye container 105.
As a third method step, the method 200 comprises: the pump 117 is activated 205 by the control device 119 during said period 159 in order to circulate the pumped washing liquid via the liquid line 115.
As an optional fourth method step, method 200 includes: the drum driving means 123 is activated 207 by the control means 119 during said period 159 after circulating the pumped washing liquid via the liquid line 115, in order to free centrifuge the washing liquid bound to the laundry and obtain the amount of washing liquid free centrifuged.
As a fifth method step, the method 200 comprises: the first volumes 161-1, 161-2 of wash liquid that are not bound to the wash items are detected 209 by the volume detection device 135.
As a sixth method step, the method 200 comprises: when the detected volumes 161-1, 161-2 exceed the volume reference value 163, the washing liquid supply 129 is deactivated 211 by the control device 119 after said period 159, wherein the volume reference value 163 is determined from the detected textile type of the laundry and/or the detected weight of the laundry.
All the features explained and shown in connection with the individual embodiments of the invention can be arranged in different combinations in the subject matter according to the invention in order to achieve their advantageous effects at the same time.
The scope of the invention is defined by the claims and is not limited by the features explained in the description or shown in the drawings.
List of reference numerals
100. Washing care implement
101. Is punched into the shell
103. Door
105. Alkali liquor container
107. Washing drum
109. The lower side of the roller
111. Discharge opening
113. Input opening
115. Liquid pipeline
117. Pump with a pump body
119. Control device
121. First control connection part
123. Roller driving device
125. Second control connection part
127. Third control connection part
128. Discharge line
129. Washing liquid supply device
131. Supply pipeline
133. Fourth control connection part
135. Volume detection device
137. Weight detecting device
139. Fifth control connection part
141. Textile detection device
143. Sixth control connection part
145. Ordinate axis
147. Axis of abscissa
149. First curve of
151. Second curve
153. Third curve
155. Fourth curve of
156. Fifth curve
157. Washing liquid amount
158. Sixth curve
159. Time period
159-1 first time interval
159-2 second time interval
159-3 third time interval
159-4 fourth time interval
159-5 fifth time interval
161-1 volume of wash liquor not bound to wash load
161-2 volume of washing liquid free to be centrifuged
163. Volume reference value
165. First power curve
167. Second power curve
169. First integral value
171. Second integral value
200. Method for caring for laundry
201. The first method step: determining the amount of wash liquor
203. The second method step: activating the washing liquid supply device
205. Third method step: activating a pump
207. An optional fourth method step: activating roller driving device
209. Fifth method step: detection volume
211. Sixth method step: disabling the washing liquid supply means
Claims (16)
1. A laundry care appliance (100) having: -an lye container (105) for receiving a washing liquid, wherein the lye container (105) has a discharge opening (111) and an input opening (113), which are fluidically connected by a liquid line (115), -a laundry drum (107) for receiving laundry, -a washing liquid supply device (129) for supplying washing liquid into the lye container (105), -a pump (117) configured for: -pumping washing liquid into the liquid line (115) through the discharge opening (111), and re-feeding the pumped washing liquid to the lye container (105) through the input opening (113) for wetting the wash ware in the wash ware drum (107), -volume detection means (135) for detecting the volume (161-1, 162-2) of washing liquid not bound to the wash ware, and-control means (119) for controlling the pump (117) and the washing liquid feeding means (129), wherein the wash ware care implement (100) has: -textile detection means (141) for detecting the textile type of laundry received in the laundry drum (107), and/or-weight detection means (137) for detecting the weight of laundry received in the laundry drum (107), characterized in that the control means (119) are configured for: -determining a washing liquid amount (157) to be supplied by the washing liquid supply means (129) to the lye container (105) based on the detected textile type of the laundry and/or based on the detected weight of the laundry, the control means (119) being configured for: activating the wash liquid supply means (129) during a time period (159) and supplying the determined amount of wash liquid (157) to the lye container (105), the control means (119) being configured for: -activating the pump (117) during the time period (159) for circulating the supplied washing liquid through the liquid line (115), wherein the volume detection means (135) is configured for: -detecting a volume (161-1, 161-2) of washing liquid not bound to the laundry during the time period (159), and the control means (119) is configured for: -deactivating the washing liquid supply (129) when the detected volume (161-1, 161-2) exceeds a volume reference value (163), wherein the volume reference value (163) is determined from the detected textile type of the washing and/or the detected weight of the washing, and wherein the volume reference value (163) is also determined from a desired saturation of the washing, wherein the desired saturation of the washing is reached when the detected volume exceeds the volume reference value, depending on the correlation between the saturation of the washing and the volume of washing liquid not bound to the washing.
2. The laundry care appliance (100) according to claim 1, characterized in that the control device (119) is configured for: -repeating said time period (159) when the detected volume (161-1, 161-2) is below said volume reference value (163) in order to re-determine the amount of wash liquid (157), re-supply the determined amount of wash liquid (157) to said lye container (105), re-detect the volume (161-1, 161-2) of wash liquid not bound to said wash load, and-deactivate said wash liquid supply means (129) when the sum of said volume (161-1, 161-2) and the re-detected volume (161-1, 161-2) exceeds the volume reference value (163).
3. The laundry care appliance (100) according to claim 2, characterized in that the control device (119) is configured for: -determining the re-determined amount of washing liquid (157) from the difference between the volume reference value (163) and the volume (161-1, 161-2) detected during the time period (159), and/or-the control means (119) being configured for: the re-determined amount of wash liquor is determined (157) based on the detected textile type of the wash liquor and/or based on the detected weight of the wash liquor.
4. A laundry care implement (100) according to any of claims 1-3, characterized in that the weight detection device (137) comprises: -weighing means for weighing the laundry received in the laundry drum (107), -means for detecting the sinking of the vibrating system of the laundry drum (107), and/or-means for detecting a power parameter of the drum drive (123) of the laundry drum (107).
5. A laundry care appliance (100) according to any of claims 1-3, characterized in that the laundry care appliance (100) has program selection means for selecting one laundry care program from a plurality of laundry care programs, wherein the textile detection means (141) are configured for: the textile type of the wash is detected based on the selected wash care program.
6. A laundry care appliance (100) according to any of claims 1-3, characterized in that the textile detection means (141) comprises an optical sensor for detecting a material property of a textile type of the laundry, wherein the textile detection means (141) is configured for: the textile type of the wash is detected based on the detected material properties.
7. A laundry care implement (100) according to any of claims 1-3, characterized in that the volume detection device (135) is configured for: a volume (161-1) of wash liquid circulated by the pump (117) through the liquid line (115) is detected during the time period (159) so as to detect a volume (161-1) of wash liquid that is not bound to the wash load.
8. A laundry care appliance (100) according to any of claims 1-3, characterized in that the volume detection means (135) comprises a flow sensor arranged in the liquid line (115) for detecting a volume flow of washing liquid pumped through the liquid line (115), and/or that the volume detection means (135) comprises a power detection element for detecting an electrical power value of the pump (117).
9. A laundry care appliance (100) according to any of claims 1-3, characterized in that the laundry care appliance (100) has a drum drive (123) for rotating the laundry drum (107), and the control device (119) is configured for: activating the drum drive (123) after the washing liquid is circulated and pumped through the liquid pipeline (115) so as to perform free centrifugal separation on the washing liquid combined to the washing object, so as to obtain the washing liquid amount which is subjected to free centrifugal separation, wherein the volume detection device (135) is configured for: the volume (161-2) of the circulating pumped washing liquid separated by free centrifugation is detected in order to detect the volume (161-2) of washing liquid not bound to the laundry.
10. A laundry care appliance (100) according to any of claims 1-3, characterized in that the volume detection means (135) comprises a level sensor arranged in the lye container (105) for detecting the level of the washing liquid located in the lye container (105).
11. The laundry care appliance (100) according to claim 10, characterized in that the level sensor is arranged in a lower region of the lye container (105) facing the discharge opening (111).
12. The laundry care appliance (100) according to claim 9, characterized in that the control device (119) is configured for: determining a proportional relationship between the amount of washing liquid (157) fed to the lye container (105) and the volume of washing liquid (161-2) free to be centrifuged during the time period (159), wherein the textile detection device (141) is configured for: detecting a textile type of the laundry based on the determined scaling relationship, and/or wherein the volume reference value (163) is determined from the determined scaling relationship, from the detected textile type of the laundry and/or from the detected weight of the laundry.
13. A method (200) for caring for laundry in a laundry care appliance (100), wherein the laundry care appliance (100) has a lye container (105) for receiving a washing liquid, wherein the lye container (105) has a discharge opening (111) and an input opening (113), which are fluidically connected by a liquid line (115), wherein the laundry care appliance (100) has: -a laundry drum (107) for receiving laundry, -a washing liquid supply device (129) for supplying washing liquid into the lye container (105), -a pump (117) configured for: -pumping washing liquid into the liquid line (115) through the discharge opening (111) and re-feeding the pumped washing liquid to the lye container (105) through the input opening (113) for wetting the wash ware in the wash ware drum (107), -volume detection means (135) for detecting the volume (161-1, 161-2) of washing liquid not bound by the wash ware, -textile detection means (141) for detecting the textile type of wash ware received in the wash ware drum (107) and/or weight detection means (137) for detecting the weight of wash ware received in the wash ware drum (107), and-control means (119) for controlling the pump (117) and the wash ware feeding means (129), characterized in that the method (200) comprises the steps of: determining (201), by means of the control device (119), the amount of washing liquid (157) to be supplied by the washing liquid supply device (129) to the lye container (105) on the basis of the detected textile type of the washing item and/or on the basis of the detected weight of the washing item, activating (205), by means of the control device (119), the washing liquid supply device (129) during a time period (159) for supplying the determined amount of washing liquid (157) to the lye container (105), activating (205), by means of the control device (119), the pump (117) during the time period (159) for circulating the supplied washing liquid through the liquid line (115), detecting (209), by means of the volume detection device (135), the volume (161-1, 161-2) of washing liquid not bound to the washing item during the time period (159), activating (163), by means of the control device (161-1, 161-2) when the detected volume exceeds a volume reference value (163), and wherein the determined amount of washing liquid (161) is supplied to the washing item (129) during the time period (159) and wherein the determined weight of the washing item (129) is supplied according to the detected value (163), the volume reference value (163) is also determined as a function of a desired saturation of the laundry, wherein the desired saturation of the laundry is reached when the detected volume exceeds the volume reference value, as a function of a correlation between the saturation of the laundry and the volume of washing liquid not bound to the laundry.
14. The method (200) according to claim 13, characterized in that the time period (159) is repeated by the control device (119) when the detected volume (161-1, 161-2) is below the volume reference value (163) in order to re-determine the amount of wash liquid (157), to re-supply the determined amount of wash liquid (157) to the lye container (105), to re-detect the volume (161-1, 161-2) of wash liquid not bound to the wash load, and to deactivate the wash liquid supply device (129) when the sum of the volume (161-1, 161-2) and the re-detected volume (161-1, 161-2) exceeds the volume reference value (163).
15. The method (200) according to claim 13 or 14, wherein the detection (209) of the volume (161-1, 161-2) of wash liquor not bound to the wash liquor comprises: the volume (161-1, 161-2) of the washing liquid circulated by the pump (117) through the liquid line (115) is detected by the volume detection means (135).
16. The method (200) according to claim 13 or 14, wherein the laundry care appliance (100) has a drum drive (123) for rotating the laundry drum (107), the method (200) comprising the steps of: activating (207), by the control device (119), the drum drive device (123) during the period of time (159) after the circulating pumping of the washing liquid through the liquid line (115) for free centrifugation of the washing liquid bound to the washing and obtaining a free centrifuged washing liquid volume, detecting (209), by the volume detection device (135), the free centrifuged washing liquid volume (161-2) for detecting the washing liquid volume (161-2) not bound to the washing.
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| Application Number | Priority Date | Filing Date | Title |
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| DE102019207240.2A DE102019207240A1 (en) | 2019-05-17 | 2019-05-17 | Laundry care device with one control |
| DE102019207240.2 | 2019-05-17 |
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| EP (1) | EP3739100B1 (en) |
| CN (1) | CN111945379B (en) |
| DE (1) | DE102019207240A1 (en) |
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| DE102021202229A1 (en) | 2021-03-09 | 2022-09-15 | BSH Hausgeräte GmbH | Laundry care device with a control |
| BE1031021B1 (en) * | 2022-11-09 | 2024-06-10 | Miele & Cie | Method for operating a washing machine and washing machine |
| BE1031029B1 (en) * | 2022-11-09 | 2024-06-10 | Miele & Cie | Method for operating a washing machine and washing machine |
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Also Published As
| Publication number | Publication date |
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| CN111945379A (en) | 2020-11-17 |
| EP3739100B1 (en) | 2023-08-16 |
| DE102019207240A1 (en) | 2020-11-19 |
| EP3739100A1 (en) | 2020-11-18 |
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