Laundry care appliance with control device

Abstract

This invention relates to a laundry care appliance comprising: a flexible laundry chamber capable of being fluid-tightly sealed; a laundry liquid reservoir; a laundry care substance receiving section fluidly connected to the laundry chamber; a pump fluidly connected to both the laundry liquid reservoir and the laundry care substance receiving section, the pump pumping laundry liquid from the laundry liquid reservoir into the laundry chamber during a pumping process, and pumping fluid from the laundry chamber through the laundry care substance receiving section into the laundry liquid reservoir during a pumping out process; and a control device connected to the pump control technology. The control device activates the pump during a dissolution step, pumping a portion of the fluid from the laundry chamber to the laundry liquid reservoir, thereby dissolving at least partially the laundry care substance received in the laundry care substance receiving section within the portion of the fluid.

Description

Technical Field

[0001] This invention relates to a laundry care appliance with a control device. Background Technology

[0002] In traditional drum-type laundry appliances, a rotating laundry drum is typically used to receive laundry. Through the rotation of the laundry drum, the laundry received within it can be advantageously wetted with detergent during the washing phase.

[0003] However, traditional front-loading laundry appliances have a large volume and therefore require a large placement base. In addition, the use of front-loading laundry appliances is often associated with increased detergent consumption and increased energy consumption due to dead volume.

[0004] A vacuum washing machine is disclosed in DE 26 50 509. Summary of the Invention

[0005] The objective of this invention is to provide a laundry care appliance in which flexible dispensing can be achieved during the laundry care process.

[0006] This task is solved by subject matter having the features of the independent claims. Advantageous embodiments are the subject matter of the dependent claims, the specification, and the drawings.

[0007] According to a first aspect, the objective of the invention is solved by a laundry care appliance comprising: a flexible laundry chamber capable of being fluid-tightly sealed for receiving laundry; a laundry liquid reservoir for receiving laundry liquid; a laundry care substance receiving section for receiving laundry care substance, wherein the laundry care substance receiving section is fluidly connected to the laundry chamber; and a pump fluidly connected to both the laundry liquid reservoir and the laundry care substance receiving section, wherein the pump is configured to pump laundry liquid from the laundry liquid reservoir into the laundry chamber during a pumping process. Furthermore, wherein the pump is configured to pump fluid from the laundry chamber via the laundry care substance receiving section to the detergent reservoir during the pumping process; and a control device, connected to the pump in a control technology manner, wherein the control device is configured to: activate the pump during the dissolution step to pump a portion of the fluid volume from the laundry chamber so as to pump the portion of the fluid volume from the laundry chamber and via the laundry care substance receiving section to the detergent reservoir, and to dissolve the laundry care substance received in the laundry care substance receiving section at least partially in the portion of the fluid volume.

[0008] Hereinafter, the laundry care appliance disclosed in this application is particularly a drumless laundry care appliance, that is, a laundry care appliance that does not have a rotating laundry drum.

[0009] This achieves the following technical advantage: during the dissolution step, fluid pumped from the laundry chamber by a pump flows through the laundry care material receiving section and can advantageously dissolve the laundry care material received in the laundry care material receiving section.

[0010] Here, however, the pump pumps a specific portion of the fluid from the laundry chamber, thereby supplying the pumped portion of the fluid to the laundry care material receiving section during the dissolution step, and at least partially dissolving the laundry care material received in the laundry care material receiving section.

[0011] In particular, the amount of fluid pumped out of the washing chamber during the dissolving step is determined such that the pumped amount of fluid does not completely dissolve the washing material received in the washing material receiving section, so that a portion of the washing material initially received in the washing material receiving section remains in the washing material receiving section after the dissolving step.

[0012] The portion of the detergent and care product remaining in the detergent and care product receiving unit after the dissolving step can be dissolved from the receiving unit during another dissolving step. This allows the laundry care substance to be gradually added to the laundry in the washing chamber during multiple subsequent washing steps. Consequently, the efficiency of laundry care can be advantageously improved during these subsequent washing steps.

[0013] The pump is fluidically connected to the laundry chamber and the detergent reservoir. Therefore, during the dissolution step, the pump subsequently pumps a portion of the pumped fluid, along with the detergent care substance dissolved therein, into the detergent reservoir. The portion of fluid retained in the detergent reservoir, along with the detergent care substance dissolved therein, can then be advantageously used in subsequent washing steps for laundry care, in which the pump simply pumps the fluid, along with the detergent care substance dissolved therein, back into the laundry chamber.

[0014] Here, the pump (especially including liquid ring pumps) is configured to pump fluid, which includes detergent, especially a mixture of detergent and air, or only air, so that a partial vacuum can be created, in particular, inside the detergent chamber that can be sealed in a fluid-tight manner, thereby enabling, for example, during the dissolving step, the portion of the fluid to be pumped particularly effectively from the detergent chamber through the detergent care material receiving section and into the detergent reservoir.

[0015] In particular, the detergent reservoir is connected to the discharge section via a discharge line, wherein the discharge valve, which is connected to the control device in a controllable manner, either opens the discharge line in an open position or closes it in a closed position. Here, the control device is specifically configured during the dissolving step to turn the discharge valve to the open position, so that air expelled from the detergent reservoir during the pumping of a portion of the fluid from the laundry chamber into the detergent reservoir can escape from the laundry care appliance through the open discharge line.

[0016] The laundry care appliance according to this application is understood as an appliance used for laundry care, i.e., for washing and / or drying laundry. In particular, this laundry care appliance is understood as a household laundry care appliance. That is, a laundry care appliance used within the scope of housework and used to handle typical household laundry quantities.

[0017] In an advantageous embodiment, the control device is configured to: activate a pump during another dissolution step following the dissolution step, for pumping another portion of the fluid from the laundry chamber, so as to pump said other portion of the fluid from the laundry chamber and via the laundry care substance receiving section to the laundry liquid tank, and to dissolve the laundry care substance received in the laundry care substance receiving section at least partially in said other portion of the fluid.

[0018] This achieves the technical advantage that, within the scope of the other dissolving step, the additional fluid volume pumped from the laundry chamber to the laundry care material receiving section can be dissolved. Another amount of detergent care material received in the detergent care material receiving section is used to achieve an incremental (that is, gradual) dissolution of the detergent care material received in the detergent care material receiving section. Another amount of detergent care substance dissolved in another portion of the fluid is pumped from the detergent care substance receiving section to the detergent liquid storage tank.

[0019] In particular, the control device is configured to: repeat the other dissolving step multiple times to activate the pump during the multiple other dissolving steps to pump multiple additional fluid volumes of fluid from the laundry chamber to pump multiple additional fluid volumes of fluid from the laundry chamber and via the laundry care substance receiving section to the laundry liquid reservoir, and to dissolve the laundry care substance received in the laundry care substance receiving section at least partially in the multiple additional fluid volumes of fluid.

[0020] Therefore, the other dissolving step may also include multiple other dissolving steps, during which multiple additional amounts of detergent care material received in the detergent care material receiving section may be dissolved.

[0021] In particular, the detergent care substance received in the detergent care substance receiving section is completely dissolved after the other dissolving step (or after several other dissolving steps), so that no detergent care substance remains in the detergent care substance receiving section, especially after the other dissolving step (or after several other dissolving steps).

[0022] In an advantageous embodiment, the control device is configured to activate a pump during a retraction step following a dissolution step and / or another dissolution step, for pumping washing liquid from the washing liquid reservoir to pump the retracted amount of fluid from the washing liquid reservoir into the washing chamber.

[0023] This achieves the following technical advantage: during the dissolution step, a portion of the fluid received in the washing liquid tank, along with the laundry care substance dissolved therein, can be effectively supplied into the laundry chamber during the recirculation step, so as to achieve effective laundry care during the washing step.

[0024] In particular, during the recirculation step, the pump is configured to pump the recirculated amount of fluid pumped from the detergent reservoir directly (i.e., especially without passing through the detergent receiving section) into the detergent chamber, so that any detergent that may remain in the detergent receiving section will not dissolve from the detergent receiving section during the recirculation step.

[0025] In particular, the pump is directly connected to the laundry chamber via a first pumping line and / or a third pumping line so as to pump the amount of fluid returned directly (i.e., especially without passing through the laundry care material receiving section) into the laundry chamber during the return step.

[0026] In an advantageous embodiment, the control device is configured to: activate a pump during the dissolution step following the retraction step, for pumping the dissolved amount of fluid from the laundry chamber, so as to pump the dissolved amount of fluid from the laundry chamber and via the laundry care material receiving section to the laundry liquid tank, and to dissolve the laundry care material received in the laundry care material receiving section at least partially (especially completely) in the dissolved amount.

[0027] This achieves the following technical advantage: the fluid received in the laundry chamber after the return step (e.g., after the washing step is completed) can be reused to dissolve any remaining amount of laundry care material received in the laundry care material receiving section and to allow that remaining amount to be received in the laundry liquid tank.

[0028] In particular, the amount of detergent to be dissolved during the dissolving step can be selected such that the detergent received in the detergent receiving section is completely dissolved in the amount of detergent to be dissolved, so that no detergent remains in the detergent receiving section after the dissolving step.

[0029] Therefore, during another reabsorption step following the dissolution step, the remaining amount of detergent care material dissolved in the dissolution volume can be re-fed into the detergent chamber, so that the detergent care material can be re-fed into the detergent chamber during another washing step.

[0030] In one advantageous embodiment, the control device is configured to: repeatedly perform the dissolution step to activate a pump during a plurality of other dissolution steps for pumping a plurality of other dissolution amounts of fluid from the laundry chamber, so as to pump a plurality of other dissolution amounts of fluid from the laundry chamber and via a laundry care material receiving section to the laundry liquid reservoir, and to dissolve the laundry care material received in the laundry care material receiving section at least partially (especially completely) in the plurality of other dissolution amounts of fluid.

[0031] This achieves the following technical advantage: during multiple washing steps in the washing chamber, the detergent and care substance can be repeatedly (i.e., gradually) dissolved from the detergent and care substance receiving section during multiple dissolution steps. So that, in the meantime, a portion of the dissolved detergent and care substance is fed back into the detergent chamber within a series of recirculation steps.

[0032] In one advantageous embodiment, the laundry care appliance has a pressure sensor for detecting air pressure in the laundry chamber, wherein the pressure sensor is connected to a control device in a controllable manner, wherein the control device is configured to activate a pump during a dissolving step, another dissolving step, a dissolving step, and / or another dissolving step, for pumping a portion of fluid volume, another portion of fluid volume, a dissolving amount, and / or another dissolving amount of fluid from the laundry chamber, and wherein the portion of fluid volume, another portion of fluid volume, the dissolving amount, and / or another dissolving amount is determined based on the air pressure in the laundry chamber detected by the pressure sensor.

[0033] This achieves the following technical advantage: the air pressure detected by the pressure sensor inside the laundry chamber enables the effective determination of the amount of fluid pumped out of the laundry chamber.

[0034] Because the pump is specifically constructed as a liquid ring pump, which is configured to pump out a mixture of washing liquid and air, or air, from the washing chamber in addition to the washing liquid received in the washing chamber, thereby causing the air pressure inside the washing chamber to decrease constantly during pumping, thus creating a direct relationship between the air pressure inside the washing chamber and the amount of fluid pumped out.

[0035] In particular, the control device is configured to deactivate the pump when the air pressure detected by the pressure sensor is below an air pressure threshold during a dissolution step, another dissolution step, a defrosting step, and / or another defrosting step.

[0036] By stopping the pump accordingly when the air pressure falls below a predetermined threshold, it is ensured that a precisely defined amount of fluid is pumped out of the laundry chamber during the dissolving step, another dissolving step, the desolvation step, and / or another desolvation step, thereby allowing a predetermined amount of laundry care material to be dissolved from the laundry care material receiving section.

[0037] In particular, the control device is configured to shut down the pump when the drop in air pressure detected by the pressure sensor exceeds the slope limit value within a defined time interval during a dissolution step, another dissolution step, a desolvation step, and / or another desolvation step.

[0038] Alternatively, the decrease in air pressure during a defined time interval can be analyzed and processed by a control device, thereby stopping the pump when a defined slope limit is exceeded. This also ensures that a precisely defined amount of fluid is pumped from the laundry chamber during the dissolving step, another dissolving step, a dissolving step, and / or another dissolving step, so that a defined amount of laundry care material can be dissolved from the laundry care material receiving section.

[0039] In one advantageous embodiment, the detergent tank has at least one level sensor for detecting the level of detergent in the tank, wherein the control device is configured to deactivate the pump when the level detected by the level sensor exceeds a level threshold during a dissolving step, another dissolving step, a dissolving step, and / or another dissolving step.

[0040] This achieves the technical advantage that the amount of fluid pumped from the laundry chamber can be advantageously determined based on the fluid level in the detergent reservoir. Because the pump delivers fluid from the laundry chamber to the detergent reservoir via the laundry care material receiving section during the dissolving step, another dissolving step, a dissolving step, and / or another dissolving step, the amount of fluid pumped from the laundry chamber is equivalent to the amount of fluid pumped into the detergent reservoir.

[0041] The difference between the initial liquid level in the detergent reservoir and the liquid level threshold can advantageously determine the amount of fluid pumped out of the detergent chamber during the dissolution step, another amount of fluid pumped out of the detergent chamber during another dissolution step, the amount of fluid pumped out of the detergent chamber during the desolvation step, and / or another amount of fluid pumped out of the detergent chamber during another desolvation step.

[0042] In particular, the detergent tank has multiple level sensors for detecting multiple liquid levels of the fluid in the detergent tank, and the pump is shut down when the liquid level detected by the corresponding level sensor exceeds the corresponding liquid level threshold.

[0043] In an advantageous embodiment, a portion of the fluid volume, another portion of the fluid volume, the amount of dissolution, and / or another amount of dissolution are determined based on the activation time of the pump during the dissolution process, another dissolution process, the dissolution process, and / or another dissolution process.

[0044] This achieves the following technical advantage: the volume of fluid pumped can be easily detected based on the pump's activation time. When the pump speed is particularly constant, the volumetric flow rate of the fluid pumped also remains constant, thus establishing a direct correlation between the pump's activation time and the volume of fluid pumped.

[0045] In one advantageous embodiment, the pump is configured as a pump with variable speed, and a portion of the fluid volume, another portion of the fluid volume, the amount of dissolution and / or another amount of dissolution is determined based on the pump speed during the dissolution process, another dissolution process, the dissolution process and / or another dissolution process.

[0046] This achieves the following technical advantage: the volume of fluid pumped can be easily detected based on the pump's rotational speed. In cases where the pump's rotational speed is particularly variable, the volumetric flow of fluid delivered by the pump changes according to the pump's rotational speed. Therefore, within a given time period, a greater volume of fluid is delivered by the pump at a higher rotational speed compared to a lower pump speed. Thus, a direct correlation exists between the pump's rotational speed and the volume of fluid delivered by the pump within a given time period, allowing the control device to effectively determine the corresponding fluid volume.

[0047] In particular, the partial fluid volume, the other partial fluid volume, the dissolution volume, and / or the other dissolution volume are determined based on the pump's revolutions and activation time during the dissolution process, the other dissolution process, the dissolution process, and / or the other dissolution process.

[0048] In an advantageous embodiment, the control device is configured to: activate the pump prior to the dissolution step for pumping washing liquid from the washing liquid reservoir to pump fluid from the washing liquid reservoir into the washing chamber, and / or the control device is configured to: activate the pump (particularly configured as a liquid ring pump) prior to the dissolution step for creating a partial vacuum inside the washing chamber.

[0049] This achieves the following technical advantage: before the dissolution step, the fluid (especially fresh water) stored in the detergent tank is supplied into the detergent chamber to ensure that during the subsequent dissolution step, there is a sufficient amount of fluid in the detergent chamber to effectively dissolve the detergent received in the detergent receiving section.

[0050] Furthermore, a pump specifically configured as a liquid ring pump can create a partial vacuum inside the wash chamber before the dissolution step by partially pumping air out of the wash chamber, thereby causing the flexible wash chamber to contract. As a result, the fluid received in the wash chamber can be pumped out of the wash chamber particularly advantageously during the dissolution step.

[0051] In one advantageous embodiment, the laundry chamber has a first container opening, which is particularly located on the upper side of the laundry chamber facing away from the bottom of the laundry appliance, wherein the pump is fluidically connected to the first container opening via a first pumping line of the laundry appliance to supply washing liquid into the laundry chamber through the first pumping line and the first container opening, and / or the laundry chamber has a second container opening, which is particularly located on the lower side of the laundry chamber facing the bottom of the laundry appliance, wherein the pump is fluidly connected to the second container opening via a third pumping line of the laundry appliance to pump washing liquid out of the laundry chamber through the second container opening and the third pumping line.

[0052] This achieves the following technical advantage: the washing liquid is effectively supplied into the washing chamber, for example, during the recirculation step, through a first container opening, particularly arranged on the upper side of the washing chamber.

[0053] The second container opening, particularly located on the underside of the laundry chamber, ensures that the laundry solution is effectively pumped out of the laundry chamber, for example, so that the laundry solution consumed after the washing process can be pumped out of the laundry care appliance.

[0054] Here, the third pumping line is connected to the pump directly (especially not via the laundry care substance receiving section) in terms of fluid technology, so that the laundry care substance received in the laundry care substance receiving section will not be unintentionally dissolved during the pumping of fluid through the third pumping line.

[0055] The first pumping line particularly includes a first valve configured to: close the opening of a first container in a fluid-tight manner, and the first valve is technically connected to a control device. The control device is particularly configured to: switch the first valve between an open position and a closed position. In the open position, the first valve fluidly opens the opening of the first container, and in the closed position, the first valve closes the opening of the first container.

[0056] The third pumping line particularly includes a third valve configured to: close the opening of the second container in a fluid-tight manner, and the third valve is technically connected to a control device. The control device is particularly configured to: switch the third valve between an open position and a closed position. In the open position, the third valve fluidly opens the opening of the second container, and in the closed position, the third valve closes the opening of the second container.

[0057] In one advantageous embodiment, the laundry care substance receiving section includes a receiving recess of a laundry care appliance, in which a substance receiving insert (Substanzaufnahmeeinsatz) for receiving laundry care substance is received. The laundry chamber has a third container opening, which is particularly located on the upper side of the laundry chamber opposite to the bottom of the laundry care appliance. The third container opening is fluidly connected to the receiving recess, and the pump is fluidly connected to the receiving recess via a fourth pumping line to supply washing liquid from the laundry chamber into the substance receiving insert received in the receiving recess and dissolve the laundry care substance received in the substance receiving insert, and then pump the dissolved laundry care substance out through the fourth pumping line.

[0058] This achieves the technical advantage that during the dissolving step, another dissolving step, the desolvation step, and / or another desolvation step, a corresponding amount of fluid can be effectively supplied from the laundry chamber into the receiving recess in order to effectively dissolve the laundry care substance.

[0059] According to a second aspect, the object of the present invention is solved by a method for dissolving a laundry care substance in a laundry care appliance, wherein the laundry care appliance comprises: a flexible laundry chamber for receiving laundry and capable of being fluid-tightly sealed; a laundry liquid reservoir for receiving laundry liquid; a laundry care substance receiving section for receiving laundry care substance, wherein the laundry care substance receiving section is fluidly connected to the laundry chamber; and a pump fluidly connected to the laundry liquid reservoir and the laundry care substance receiving section, wherein the pump is configured to pump the laundry liquid from the laundry liquid reservoir to the laundry care appliance during a pumping process. The method comprises a washing chamber, wherein a pump is configured to pump fluid from the washing chamber via a laundry care substance receiving section to a washing liquid tank during a pumping process; and a control device connected to the pump in a control technology manner, wherein the method has the following steps: the pump is activated by the control device during a dissolution step to pump a portion of the fluid volume from the washing chamber so as to pump the portion of the fluid volume from the washing chamber and via the laundry care substance receiving section to the washing liquid tank, and to dissolve at least partially the laundry care substance received in the laundry care substance receiving section in the portion of the fluid volume.

[0060] This achieves the following technical advantage: by using the aforementioned partial fluid volume, the effective and optimized dissolution of the detergent care substance received in the detergent care substance receiving section is ensured.

[0061] In an advantageous embodiment, the method comprises the following steps: a pump is activated by a control device during another dissolution step following the dissolution step, for pumping another portion of the fluid from the laundry chamber, so as to pump the other portion of the fluid from the laundry chamber and via a laundry care substance receiving section to a laundry liquid tank, and to dissolve the laundry care substance received in the laundry care substance receiving section at least partially in the other portion of the fluid.

[0062] In an advantageous embodiment, the method includes the following steps: a pump is activated by a control device during a retraction step following a dissolution step and / or another dissolution step, for pumping washing liquid from a washing liquid reservoir to pump a retraction amount of fluid from the washing liquid reservoir into the washing chamber.

[0063] In an advantageous embodiment, the method comprises the following steps: a pump is activated by a control device during a dissolution step following a return step, for pumping the dissolved amount of fluid from the laundry chamber, so as to pump the dissolved amount of fluid from the laundry chamber and via a laundry care material receiving section to a laundry liquid tank, and to dissolve the laundry care material received in the laundry care material receiving section at least partially (especially completely) in a portion of the dissolved amount of fluid.

[0064] The embodiments of the laundry care appliance according to the first aspect are equally applicable to the embodiments of the method according to the second aspect. Conversely, the embodiments of the method according to the second aspect are equally applicable to the embodiments of the laundry care appliance according to the first aspect. Attached Figure Description

[0065] Another embodiment is explained with reference to the drawings. The accompanying drawings show:

[0066] Figure 1 A schematic view showing a laundry care appliance according to an embodiment of this application;

[0067] Figure 2 Shown in Figure 1 A schematic view of the laundry care appliance shown during the dissolving process;

[0068] Figure 3 Shown in Figure 1 The illustrated laundry care apparatus is shown in a three-dimensional view during the retrieval step; and

[0069] Figure 4 A schematic diagram illustrating a method for dissolving laundry care substances in laundry care appliances. Detailed Implementation

[0070] Figure 1 A schematic view of a laundry care appliance according to an embodiment of this application is shown. Figure 1 The laundry care appliance 100 shown is configured as a drumless laundry care appliance 100, and therefore, unlike a conventional washing machine, the laundry care appliance 100 does not have a rotatable laundry drum for receiving laundry. In a conventional washing machine, the rotation of a rotatable laundry drum ensures effective wetting of the laundry with detergent during the washing process and effective dehydration of the laundry during the subsequent spin-drying process.

[0071] According to this application, Figure 1The drumless laundry care appliance 100 shown here does not have a rotatable laundry drum for receiving laundry, but instead has a flexible laundry chamber 101 that can be sealed in a fluid-tight manner for receiving laundry. Here, the laundry chamber 101 is constructed, in particular, of a material that can be reversibly deformed (e.g., an elastomer) to ensure the flexibility of the flexible laundry chamber 101. Therefore, the laundry chamber 101 is configured to be sealed in a fluid-tight manner.

[0072] The laundry chamber 101 has a first container opening 103-1, which is fluidically connected to a first pumping line 105, which in turn is fluidly connected to a pump 111 of the laundry care appliance 100. The pump 111 is connected to a detergent reservoir 113 of the laundry care appliance 100 via a second pumping line 109. A discharge line 115 branches off from the detergent reservoir 113 and leads to a discharge section 117.

[0073] The first pumping line 105 has a first valve 107-1, which is capable of sealing the first container opening 103-1 in a fluid-tight manner. In the open position, the first valve 107-1 opens the first container opening 103-1 in a fluid-technical manner, and in the closed position, the first valve 107-1 closes the first container opening 103-1, wherein the first container opening 103-1 is particularly arranged on the upper side of the laundry chamber 100 opposite to the bottom of the placement of the laundry care appliance 100.

[0074] The second pumping line 109 has a second valve 107-2, which can technically block the second pumping line 109. In the open position, the second valve 107-2 technically opens the second pumping line 109, and in the blocked position, the second valve 107-2 closes the second pumping line 109.

[0075] Furthermore, the laundry chamber 101 has a second container opening 103-2, which is specifically arranged on the lower side of the laundry chamber 101 facing the placement bottom of the laundry care appliance 100. Here, the second container opening 103-2 is fluidically connected to the pump 111 of the laundry care appliance 100 via a third pump line 119. A third valve 107-3 arranged in the third pump line 119 can fluidly open the third pump line 119 in an open position or fluidly close the third pump line 119 in a closed position.

[0076] Furthermore, the laundry chamber 101 has a third container opening 103-3, which is specifically arranged on the upper side of the laundry chamber 101 opposite to the bottom of the laundry care appliance 100. The third container opening 103-3 is located in... Figure 1 The detergent receiving unit 121 for receiving detergent and care products, shown only schematically, is connected in terms of fluid technology. Even so, in Figure 1 As not shown in the diagram, the laundry care substance receiving section 121 includes a receiving recess in which a substance receiving plug for receiving laundry care substances is installed.

[0077] The laundry detergent receiving section 121 (especially the receiving recess) is fluidly connected to the fourth pumping line 122, which in turn is fluidly connected to the pump 111. A fourth valve 107-4, arranged in the fourth pumping line 122, can fluidly open the fourth pumping line 122 in the open position or fluidly close it in the closed position.

[0078] Pump 111 is configured to supply washing liquid from washing liquid reservoir 113 into washing chamber 101 during the supply process via first pump line 105 and second pump line 109 and through first container opening 103-1. Alternatively, pump 111 may also supply washing liquid into washing chamber 101 during the supply process, particularly via third pump line 119 and through second container opening 103-2.

[0079] Furthermore, pump 111 is configured to pump fluid from the laundry chamber 101 during the pumping process through the second container opening 103-2 and the third pumping line 119, or through the third container opening 103-3, the laundry care material receiving section 121, and the fourth pumping line 122. The fluid pumped by pump 111 can be pumped into the laundry liquid reservoir 113 through the first pumping line 105 and the second pumping line 109, or the pumped fluid can be pumped from the laundry liquid reservoir 113 to the discharge section 117 through the discharge line 115.

[0080] The pump 111 according to this application is configured to transport a fluid, which may include air or a mixture of detergent and air in addition to washing liquid. Therefore, during the pumping process, the pump 111 not only pumps out the washing liquid received in the washing chamber 101 after the washing process, but also (unlike the lye pump used in conventional washing machines) pumps air or a mixture of detergent and air out of the washing chamber 101, thereby creating a partial vacuum in the washing chamber 101. To effectively ensure this capability, the pump 111 is particularly configured as a liquid ring pump 111.

[0081] from Figure 1 It is understood that the laundry care appliance 100 further includes a laundry liquid supply device 123 for supplying laundry liquid (especially fresh water) into a laundry liquid reservoir 113, wherein the laundry liquid supply device 123 is fluid-technically connected to the laundry liquid reservoir 113 via a supply line 125.

[0082] Even if this is Figure 1 As not shown, the detergent supply device 123 can also be fluidically connected to the laundry care substance receiving unit 121 via another supply line so as to supply detergent (especially fresh water) and laundry care substance directly into the laundry chamber 101.

[0083] Such external influence Figure 1 As can be seen, the laundry care appliance 100 has a control device 127, which is connected to the pump 111 and valves 107-1, 107-2, 107-3, and 107-4 via a control connection 129. The control device 127 is configured to control the pump 111 and valves 107-1, 107-2, 107-3, and 107-4.

[0084] For further details regarding the laundry care appliance 100 disclosed in this application, please refer to the following section regarding... Figure 2 The implementation plan.

[0085] Figure 2 Shown in Figure 1 A schematic view of the laundry care appliance 100 shown during the dissolving step.

[0086] 100% of laundry and care products Figure 2 The schematic construction shown is consistent with the laundry care appliance 100. Figure 1 The only difference in the schematic configuration shown is that the fluid direction 131 of the fluid pumped from the washing chamber 101 by the pump 111 is indicated by an arrow.

[0087] Here, in Figure 2 The dissolution step shown is performed after the washing liquid is supplied to the washing chamber 101, wherein the washings received in the washing chamber 101 are... Figure 2 Not shown in the image.

[0088] from Figure 2It can be seen that during the dissolution step, the control device 127 activates the pump 111 and pumps fluid from the washing chamber 101 through the third container opening 103-3, through the fourth pumping line 122, and through the first pumping line 105 and the second pumping line 109 to the washing liquid storage tank 113 when the third container opening 103-3 and the fourth pumping line 122 are opened through the fourth valve 107-4 and the second pumping line 109 are opened.

[0089] Because pump 111 is specifically configured as a liquid ring pump, the fluid pumped from the wash chamber 101 during the dissolving step can include washing liquid, air, or a mixture of washing liquid and air. In particular, at the start of the dissolving step, pump 111 creates a partial vacuum inside the wash chamber 101 by pumping out air. Here, the resulting partial vacuum particularly compresses the flexible wash chamber 101, so that washing liquid (or a mixture of washing liquid and air) can then be effectively pumped out of the wash chamber 101 by pump 111 during the dissolving step.

[0090] Fluid (particularly detergent and / or detergent-air mixture) pumped from the laundry chamber 101 by pump 111 flows through the third container opening 103-3 into the detergent care material receiving section 121, causing the detergent care material received in the detergent care material receiving section 121 to dissolve at least partially. The detergent care material received in the detergent and / or detergent-air mixture flows through the fourth pump line 122 and through the second pump line 109 into the detergent reservoir 113 and can be retained in the detergent reservoir 113 for one or more subsequent washing steps.

[0091] In order to allow the air squeezed out of the washing liquid reservoir 113 during the supply of washing liquid to the washing liquid reservoir 113 to escape, Figure 1 Another valve, not shown, can at least temporarily open the pump outlet line 115.

[0092] One objective of this application is to dissolve the laundry care substance received in the laundry care substance receiving section 121 not completely but only partially, so that a portion of the laundry care substance initially received in the laundry care substance receiving section 121 can remain in the laundry care substance receiving section 121 after the dissolution step and be used during subsequent washing steps.

[0093] For this reason, the control device 127 is configured to activate the pump 111 during the dissolving step to pump a portion of the fluid from the detergent chamber 101. The amount of fluid pumped out during the dissolving step is limited such that it is sufficient to dissolve at least a portion of the detergent receiving material received in the detergent receiving section 121, but in particular not to completely dissolve the detergent receiving material from the detergent receiving section 121.

[0094] There are several possible options for limiting the amount of fluid pumped out during the dissolution step.

[0095] In particular, laundry care appliance 100 has the function of... Figure 2 A pressure sensor, not shown, is used to detect the air pressure in the wash chamber 101, and the pressure sensor is connected to the control device 127 in a control technology manner. The control device 127 is configured to determine the amount of fluid pumped out by the pump 111 during the dissolving step based on the air pressure detected by the pressure sensor in the wash chamber 101.

[0096] In particular, the control device 127 is configured to: during the dissolution step, when the air pressure detected by the pressure sensor is lower than the air pressure threshold, stop the pump 111 so that the pump 111 has pumped out an accurately defined portion of fluid until it is stopped.

[0097] Alternatively, the control device 127 is specifically configured to: during the dissolution step, when the air pressure detected by the pressure sensor drops beyond the slope limit within a defined time interval, stop the pump 111 so that the pump 111 has pumped out an accurately defined portion of fluid until it is stopped.

[0098] In particular, the detergent storage tank 113 has the function of... Figure 2 At least one level sensor (not shown) is used to detect the level of the detergent in the detergent reservoir 113. Control device 127 is configured to deactivate pump 111 during the dissolving step when the level detected by the level sensor exceeds a level threshold. Therefore, the amount of fluid pumped out by pump 111 during the dissolving step corresponds to the difference between the level before the dissolving step and the level threshold.

[0099] If pump 111 operates at a constant speed and thus pumps fluid at a constant volumetric flow rate, the volume of fluid can be determined, in particular, based on the activation time of pump 111 during the dissolution process.

[0100] If pump 111 is specifically configured as a pump 111 with a variable speed and thus pumps fluid in a variable volumetric flow, then a portion of the fluid volume can be determined based on the speed of pump 111 during the dissolution process.

[0101] The corresponding optional possibilities for determining the amount of fluid pumped out of the washing chamber 101 during the dissolution step can be combined arbitrarily and are not limiting.

[0102] The control device 127 is further configured to activate the pump 111 during another dissolution step following the dissolution step, for pumping another portion of the fluid from the laundry chamber 101, so as to pump the other portion of the fluid from the laundry chamber 101 and via the laundry care substance receiving section 121 into the detergent reservoir 113, and to dissolve the laundry care substance received in the laundry care substance receiving section 121 at least partially in the other portion of the fluid.

[0103] In particular, the control device 127 is configured to: repeat the other dissolving step multiple times, activate the pump 111 during the multiple other dissolving steps, pump multiple additional fluid volumes from the laundry chamber 101 to pump multiple additional fluid volumes from the laundry chamber 101 and via the laundry care substance receiving section 121 to the laundry liquid reservoir 113, and to dissolve the laundry care substance received in the laundry care substance receiving section 121 at least partially in the multiple additional fluid volumes.

[0104] Therefore, through the other dissolving step (or multiple other dissolving steps), the laundry care substance can be gradually dissolved in different fractional fluid volumes and transferred to the laundry liquid tank 113 in incremental steps, thereby advantageously adjusting the amount of laundry care substance dissolved during the other dissolving step (or multiple other dissolving steps).

[0105] The determination of the other portion of the fluid pumped out during the other dissolution step can be performed in a manner similar to the determination of the other portion of the fluid pumped out during the dissolution step.

[0106] Figure 3 A perspective view of the laundry chamber of a laundry care appliance during the retrieval step.

[0107] 100% of laundry and care products Figure 3 The schematic construction shown is consistent with the laundry care appliance 100. Figure 1 and Figure 2The only difference in the schematic shown is that the other fluid direction 133 of the fluid pumped from the detergent reservoir 113 to the detergent chamber 101 by pump 111 is indicated by an arrow.

[0108] exist Figure 2 After the dissolution step (or another dissolution step) shown, at least a portion of the laundry care material previously received in the laundry care material receiving section 121 is received in the laundry liquid inside the laundry liquid tank 113 and can be used in subsequent washing steps to wash the laundry inside the laundry chamber 101.

[0109] For this purpose, the control device 127 is configured to activate the pump 111 during the reabsorption step following the dissolution step and / or another dissolution step, for pumping washing liquid from the washing liquid reservoir 113 so as to pump the reabsorbed amount of fluid from the washing liquid reservoir 113 to the washing chamber 101.

[0110] Here, the amount of return can be similar to that based on... Figure 2 The fluid volume described herein is determined based on the change in the level of the washing liquid in the washing liquid tank 113 as determined by a level sensor (or by the activation time and / or revolutions of the pump 111).

[0111] After the return step, the washing solution that has been returned to the washing chamber 101 can be used in the washing steps (especially the pre-washing step).

[0112] Because there is still detergent and care substance remaining in the detergent and care substance receiving unit 121 after the dissolving step, the remaining detergent and care substance can be used in another washing step (especially the main washing step) after the washing step (especially the pre-washing step).

[0113] Here, the control device 127 is configured to: activate the pump 111 during the dissolution step following the return step, for pumping the dissolved amount of fluid from the laundry chamber 101 so as to pump the dissolved amount of fluid from the laundry chamber 101 and via the laundry care material receiving section 121 to the laundry liquid reservoir 113, and to dissolve the laundry care material received in the laundry care material receiving section 121 at least partially (especially completely) in the fluid.

[0114] Even if the dissolution step is Figure 3 Not shown in, but also referenced in Figure 2 The corresponding fluid guiding direction 131. The dissolution amount can also be similar to that in... Figure 2 The portion of fluid volume (or the other portion of fluid volume) described herein is determined.

[0115] After the dissolution step, the washing solution can be refilled from the washing solution tank 113 according to... Figure 3 The contents are pumped into the washing chamber 101 and can then be used in another washing step (especially the main washing step).

[0116] Depending on the number of washing steps, the amount of fluid pumped through the detergent receiving unit 121 during the dissolving step (or the amount of dissolving fluid pumped through the detergent receiving unit 121 during the dissolving step) can be varied (especially by a ratio of 1 / 3 to 2 / 3) to ensure that the amount of detergent is advantageously adapted not only during the pre-washing step but also during the main washing step.

[0117] After the dissolution step (or multiple dissolution steps), the laundry care substance is dissolved (especially completely) from the laundry care substance receiving section 121.

[0118] Figure 4 A schematic diagram illustrating a method for dissolving laundry care substances in laundry care appliances.

[0119] As a first method step, method 200 includes: activating pump 111 201 by control device 127 during the dissolution step to pump a portion of the fluid volume from the laundry chamber 101 so as to pump the portion of the fluid volume from the laundry chamber 101 and via the laundry care substance receiving section 121 into the detergent reservoir 113, and to dissolve at least partially the laundry care substance received in the laundry care substance receiving section 121 in the portion of the fluid volume.

[0120] As an optional second method step, method 200 includes: activating pump 111 203 by control device 127 during a retraction step following a dissolution step and / or another dissolution step, for pumping washing liquid from washing liquid reservoir 113 so as to pump the retraction amount of fluid from washing liquid reservoir 113 to washing chamber 101.

[0121] As an optional third method step, method 200 includes: activating pump 111 209 by control device 127 during the dissolution step following the return step, for pumping the dissolved amount of fluid from the laundry chamber 101 to pump the dissolved amount of fluid from the laundry chamber 101 and via the laundry care material receiving section 121 into the laundry liquid reservoir 113, and causing the laundry care material received in the laundry care material receiving section 121 to be at least partially (especially completely) dissolved in a portion of the dissolved amount of fluid.

[0122] All features explained and illustrated in connection with individual embodiments of the invention may be arranged in different combinations within the subject matter of the invention in order to achieve their advantageous effects simultaneously.

[0123] The scope of protection of this invention is given by the claims and is not limited by the features explained in the description or shown in the drawings.

[0124] List of reference numerals

[0125] 100 laundry care appliances

[0126] 101 Washing Chamber

[0127] 103-1 First container opening

[0128] 103-2 Second container opening

[0129] 103-3 Third container opening

[0130] 105 First pumping pipeline

[0131] 107-1 First Valve

[0132] 107-2 Second Valve

[0133] 107-3 Third Valve

[0134] 107-4 Fourth Valve

[0135] 109 Second pumping pipeline

[0136] 111 Pump

[0137] 113 Detergent Storage Tank

[0138] 115 Discharge Pipeline

[0139] 117 Discharge Section

[0140] 119 Third Pumping Pipeline

[0141] 121 Laundry and Care Substance Receiving Department

[0142] 122 Fourth pumping pipeline

[0143] 123 Washing liquid supply device

[0144] 125 Supply Pipeline

[0145] 127 Control device

[0146] 129 Control Connection Part

[0147] 131 Fluid Guiding Direction

[0148] 133 Another fluid guiding direction

[0149] 200 Method for supplying air into laundry care appliances

[0150] 201 First Method Step: Activate the pump to pump out a portion of the fluid.

[0151] 203 Second method step: Activate the pump to pump the washing liquid.

[0152] 205 Third method step: Activate the pump to pump out the dissolution volume.

Claims

1. A laundry care appliance (100) comprising: - A laundry chamber (101) for receiving laundry, the laundry chamber being flexible and capable of being sealed in a fluid-tight manner; - Washing liquid storage tank (113) for receiving washing liquid. - Laundry care substance receiving section (121) for receiving laundry care substances. in, The laundry care material receiving unit (121) is fluidically connected to the laundry chamber (101); - A pump (111), which is fluidically connected to the detergent reservoir (113) and the laundry care substance receiving unit (121). The pump (111) is configured to pump washing liquid from the washing liquid reservoir (113) into the washing chamber (101) during the pumping process, and The pump (111) is configured to: pump fluid from the laundry chamber (101) via the laundry care substance receiving section (121) into the laundry liquid reservoir (113) during the pumping process; and - Control device (127), which is connected to the pump (111) in terms of control technology. Its features are, The control device (127) is configured to: activate the pump (111) during the dissolution step to pump a portion of the fluid from the laundry chamber (101) to pump the portion of the fluid from the laundry chamber (101) and via the laundry care substance receiving section (121) into the laundry liquid reservoir (113), and to dissolve at least partially the laundry care substance received in the laundry care substance receiving section (121) in the portion of the fluid.

2. The laundry care appliance (100) according to claim 1. Its features are, The control device (127) is configured to: activate the pump (111) during another dissolution step following the dissolution step, for pumping another portion of the fluid from the laundry chamber (101) so as to pump the other portion of the fluid from the laundry chamber (101) and via the laundry care substance receiving section (121) into the laundry liquid tank (113), and to cause the laundry care substance received in the laundry care substance receiving section (121) to be at least partially dissolved in the other portion of the fluid.

3. The laundry care appliance (100) according to claim 1. Its features are, The control device (127) is configured to activate the pump (111) during the retraction step after the dissolution step to pump washing liquid from the washing liquid tank (113) so as to pump the retraction amount of fluid from the washing liquid tank (113) into the washing chamber (101).

4. The laundry care appliance (100) according to claim 2. Its features are, The control device (127) is configured to activate the pump (111) during the retraction step following the other dissolution step, for pumping washing liquid from the washing liquid reservoir (113) to pump the retraction amount of fluid from the washing liquid reservoir (113) into the washing chamber (101).

5. The laundry care appliance (100) according to claim 3 or 4. Its features are, The control device (127) is configured to: activate the pump (111) during the dissolution step following the return step, for pumping the dissolution amount of fluid from the laundry chamber (101) so as to pump the dissolution amount of fluid from the laundry chamber (101) and via the laundry care substance receiving section (121) into the laundry liquid reservoir (113), and to cause the laundry care substance received in the laundry care substance receiving section (121) to be at least partially dissolved in the dissolution amount of fluid.

6. The laundry care appliance (100) according to claim 5. Its features are, The control device (127) is configured to: repeat the dissolving step multiple times to activate the pump (111) during multiple other dissolving steps to pump multiple other dissolving amounts of fluid from the laundry chamber (101) to pump the multiple other dissolving amounts of fluid from the laundry chamber (101) and via the laundry care substance receiving section (121) into the laundry liquid tank (113), and to dissolve the laundry care substance received in the laundry care substance receiving section (121) at least partially in the multiple other dissolving amounts of fluid.

7. The laundry care appliance (100) according to any one of claims 1-4 and 6. Its features are, The laundry care appliance (100) has a pressure sensor for detecting the air pressure in the laundry chamber (101). The pressure sensor is connected to the control device (127) in terms of control technology. The control device (127) is configured to: during the dissolving step, activate the pump (111) to pump the portion of the fluid volume from the wash chamber (101), and The fluid volume is determined based on the air pressure in the laundry chamber (101) detected by the pressure sensor.

8. The laundry care appliance (100) according to claim 2. Its features are, The laundry care appliance (100) has a pressure sensor for detecting the air pressure in the laundry chamber (101). The pressure sensor is connected to the control device (127) in terms of control technology. The control device (127) is configured to: during the other dissolving step, activate the pump (111) to pump the other portion of the fluid from the wash chamber (101), and The other portion of the fluid volume is determined based on the air pressure in the washing chamber (101) detected by the pressure sensor.

9. The laundry care appliance (100) according to claim 5. Its features are, The laundry care appliance (100) has a pressure sensor for detecting the air pressure in the laundry chamber (101). The pressure sensor is connected to the control device (127) in terms of control technology. The control device (127) is configured to: during the dissolving step, activate the pump (111) to pump the amount of fluid dissolved from the wash chamber (101), and The amount of dissolution is determined based on the air pressure in the washing chamber (101) detected by the pressure sensor.

10. The laundry care appliance (100) according to claim 6. Its features are, The laundry care appliance (100) has a pressure sensor for detecting the air pressure in the laundry chamber (101). The pressure sensor is connected to the control device (127) in terms of control technology. The control device (127) is configured to: during the other dissolving step, activate the pump (111) to pump the other amount of fluid from the wash chamber (101), and The other dissolution amount is determined based on the air pressure in the washing chamber (101) detected by the pressure sensor.

11. The laundry care appliance (100) according to any one of claims 1-4, 6, 8-10. Its features are, The detergent storage tank (113) has at least one level sensor for detecting the level of detergent in the detergent storage tank (113). The control device (127) is configured to deactivate the pump (111) during the dissolution step when the liquid level detected by the liquid level sensor exceeds a liquid level threshold.

12. The laundry care appliance (100) according to claim 2. Its features are, The detergent storage tank (113) has at least one level sensor for detecting the level of detergent in the detergent storage tank (113). The control device (127) is configured to deactivate the pump (111) during the other dissolution step when the liquid level detected by the liquid level sensor exceeds a liquid level threshold.

13. The laundry care appliance (100) according to claim 5. Its features are, The detergent storage tank (113) has at least one level sensor for detecting the level of detergent in the detergent storage tank (113). The control device (127) is configured to deactivate the pump (111) during the dissolution step when the liquid level detected by the liquid level sensor exceeds the liquid level threshold.

14. The laundry care appliance (100) according to claim 6. Its features are, The detergent storage tank (113) has at least one level sensor for detecting the level of detergent in the detergent storage tank (113). The control device (127) is configured to deactivate the pump (111) during the other dissolution step when the liquid level detected by the liquid level sensor exceeds the liquid level threshold.

15. The laundry care appliance (100) according to any one of claims 1-4, 6, 8-10, 12-14. Its features are, The fluid volume is determined based on the activation time of the pump (111) during the dissolution process.

16. The laundry care appliance (100) according to claim 2. Its features are, The other portion of the fluid volume is determined based on the activation time of the pump (111) during another dissolution process.

17. The laundry care appliance (100) according to claim 5. Its features are, The amount of dissolution is determined based on the activation time of the pump (111) during the dissolution process.

18. The laundry care appliance (100) according to claim 6. Its features are, The other dissolution amount is determined based on the activation time of the pump (111) during another dissolution process.

19. The laundry care appliance (100) according to any one of claims 1-4, 6, 8-10, 12-14, 16-18. Its features are, The pump (111) is configured as a pump with a variable speed, and The fluid volume is determined based on the number of revolutions of the pump (111) during the dissolution process.

20. The laundry care appliance (100) according to claim 2. Its features are, The pump (111) is configured as a pump with a variable speed, and The other portion of the fluid volume is determined based on the number of revolutions of the pump (111) during the other dissolution process.

21. The laundry care appliance (100) according to claim 5. Its features are, The pump (111) is configured as a pump with a variable speed, and The amount of dissolution is determined based on the number of revolutions of the pump (111) during the dissolution process.

22. The laundry care appliance (100) according to claim 6. Its features are, The pump (111) is configured as a pump with a variable speed, and The other dissolution amount is determined based on the number of revolutions of the pump (111) during the other dissolution process.

23. The laundry care appliance (100) according to any one of claims 1-4, 6, 8-10, 12-14, 16-18, 20-22. Its features are, The control device (127) is configured to: activate the pump (111) prior to the dissolving step for pumping washing liquid from the washing liquid reservoir (113) to pump fluid from the washing liquid reservoir (113) into the washing chamber (101), and / or The control device (127) is configured to activate the pump (111) prior to the dissolving step in order to create a partial vacuum inside the washing chamber (101).

24. The laundry care appliance (100) according to claim 23. Its features are, The pump (111) is formed as a liquid ring pump.

25. The laundry care appliance (100) according to any one of claims 1-4, 6, 8-10, 12-14, 16-18, 20-22, and 24. Its features are, The laundry chamber (101) has a first container opening (103-1), wherein the pump (111) is fluidically connected to the first container opening (103-1) via a first pumping line (105) of the laundry care appliance (100) to supply washing liquid into the laundry chamber (101) through the first pumping line (105) and through the first container opening (103-1), and / or The laundry chamber (101) has a second container opening (103-2), wherein the pump (111) is fluidically connected to the second container opening (103-2) via a third pumping line (119) of the laundry care appliance (100) to pump laundry liquid out of the laundry chamber (101) through the second container opening (103-2) and through the third pumping line (119).

26. The laundry care appliance (100) according to claim 25. Its features are, The first container opening (103-1) is located on the upper side of the laundry chamber (101), the upper side of which faces away from the bottom of the laundry care appliance (100); and / or The second container opening (103-2) is arranged on the lower side of the laundry chamber (101), the lower side of the laundry chamber (101) facing the bottom of the laundry care appliance (100).

27. The laundry care appliance (100) according to any one of claims 1-4, 6, 8-10, 12-14, 16-18, 20-22, 24, and 26. Its features are, The laundry care substance receiving section (121) includes a receiving recess of the laundry care appliance (100), in which a substance receiving plug for receiving the laundry care substance is received. The washing chamber (101) has a third container opening (103-3), wherein the third container opening (103-3) is fluidically connected to the receiving recess, and The pump (111) is fluidically connected to the receiving recess via a fourth pumping line (122) to supply washing liquid from the washing chamber (101) into the material receiving insert received in the receiving recess, dissolve the washing care material received in the material receiving insert, and then pump the dissolved washing care material out through the fourth pumping line (122).

28. The laundry care appliance (100) according to claim 27. Its features are, The third container opening (103-3) is located on the upper side of the laundry chamber (101), which is away from the bottom of the laundry care appliance (100).

29. A method (200) for dissolving a laundry care substance in a laundry care appliance (100). in, The laundry care appliance (100) has: - A laundry chamber (101) for receiving laundry, the laundry chamber being flexible and capable of being sealed in a fluid-tight manner; - Washing liquid storage tank (113) for receiving washing liquid. - Laundry care substance receiving section (121) for receiving laundry care substances. The laundry care substance receiving unit (121) is connected to the laundry chamber (101) in terms of fluid technology; - A pump (111), which is fluidically connected to the detergent reservoir (113) and the laundry care substance receiving unit (121). The pump (111) is configured to pump washing liquid from the washing liquid reservoir (113) into the washing chamber (101) during the pumping process, and The pump (111) is configured to: pump fluid from the laundry chamber (101) via the laundry care substance receiving section (121) into the laundry liquid reservoir (113) during the pumping process; and - Control device (127), which is connected to the pump (111) in terms of control technology. Its features are, The method comprises the following steps: During the dissolution step, the pump (111) is activated (201) by the control device (127) to pump a portion of the fluid from the laundry chamber (101) so that the portion of the fluid is pumped from the laundry chamber (101) and via the laundry care substance receiving section (121) into the laundry liquid tank (113), and the laundry care substance received in the laundry care substance receiving section (121) is at least partially dissolved in the portion of the fluid.

30. The method (200) according to claim 29. Its features are, The method (200) has the following steps: The pump (111) is activated (205) by the control device (127) during the dissolution step and / or the retraction step after another dissolution step, for pumping washing liquid from the washing liquid tank (113) to pump the retraction amount of fluid from the washing liquid tank (113) into the washing chamber (101).

31. The method (200) according to claim 30. Its features are, The method (200) has the following steps: During the dissolution step following the return step, the control device (127) activates (207) the pump (111) to pump the dissolved fluid from the laundry chamber (101) so as to pump the dissolved fluid from the laundry chamber (101) and via the laundry care substance receiving section (121) into the laundry liquid tank (113), and to dissolve at least partially the laundry care substance received in the laundry care substance receiving section (121) in a portion of the dissolved fluid volume.

Images