ES2711302T3 - Apparatus for the care of the laundry with a deflection element - Google Patents

Abstract

Washing care apparatus (100) with a pumping transfer system (105), which includes a wash basin (107) for housing washing liquid, including the wash basin (107) an inlet opening (109) ) and a drain opening (111), a pipe (113) connecting the inlet opening (109) and the drain opening (111) and a pump (115) for pumping washing liquid from the drain opening (111) ) through the pipe (113), to the inlet opening (109), characterized in that the pumping transfer system (105) includes a deflection element (117) with a deflection zone (119) for diverting liquid from wash evacuated by pumping from the inlet opening (109) to the wash basin (107), in which the deflection zone (119) is arranged at a certain distance (129) from the inlet opening (109), being the distance (129) greater than the diameter (127) of the pipe (113), including the deflection element (117) an area of base (121) that joins the pipe (113) with the deflection zone (119), the base area (121) being configured such that it does not block the injection path of the washing liquid evacuated by pumping from the pipe ( 113), but is fixed to one end in an outer zone of the pipe (113) and at the other end is fixed to the deflection zone (119).

Description

DESCRIPTION

Apparatus for the care of the laundry with a deflection element

The present invention relates to an apparatus for the care of the laundry with a deflection element. In order to carry out an effective laundry care process, the devices for the care of the traditional pouring of a pumping system by means of which the washing liquid flows out of the washing tank and are driven back to the washing tub. The pumping transfer system includes a drain opening in the wash tank, through which the washing liquid can flow out and be pumped by a pump through a pipeline. The wash liquid evacuated by pumping is conducted through the pipeline to an injection nozzle, through which the washing liquid is conducted back to the washing tank.

An apparatus for the care of the laundry with the characteristics of the preamble of claim 1 is known from EP 2471 992 A1.

DE 3704079 A1 discloses a washing machine with a circulation pipe, through which the washing liquid can flow back through the sump of the washing machine.

Publication document EP 2348152 A1 shows a washing machine with liquid transfer equipment.

Publication document US 2005/0034488 A1 shows a washing machine.

The basic object of the invention is to specify an apparatus for the care of the laundry with a system of transfer by pumping that does not become clogged due to the deposit of impurities.

This objective is achieved by objects with the characteristics of the independent claim. Advantageous embodiments of the invention are the object of the figures, the description and the dependent claims.

According to a first aspect of the invention, the objective is achieved by means of a laundry care apparatus with a pumping transfer system, which includes a washing tub for receiving washing liquid, the washing tub including an inlet opening and a drain opening, a pipe connecting the inlet opening and the drain opening and a pump for pumping washing liquid from the drain opening through the pipe to the inlet opening, including the pumping system deflection element with a deflection zone for diverting wash liquid evacuated by pumping from the inlet opening to the wash tank.

In this way the technical advantage is achieved that the wash liquid evacuated by pumping through the inlet opening can be effectively deflected by the deflection element without narrowing the cross section of the inlet opening and can be sprayed into the bucket of washing, so that the entrance opening is not clogged due to impurities contained in the washing liquid.

The pump is used to pump the washing liquid in the direction of flow through the pipeline and is pumped out through the inlet opening of the wash tank. The wash liquid evacuated by pumping is injected as a jet of washing liquid against the deflection area of the deflection element. When the jet of washing liquid strikes the deflection zone, the jet of washing liquid is deflected by the deflection zone to the washing tank. The jet of washing liquid can be deflected by the deflection area with a deflection angle, whereby the jet of washing liquid can be injected in a direction of the modified flow by the deflection zone to the washing tub.

As part of the laundry care process, impurities from the laundry, such as lint, are released from the laundry and lodged in the washing liquid. The impurities from the laundry flow with the washing liquid out of the wash tank through the drain opening, are pumped through the pipe and are conducted back to the washing tank through the inlet opening. . In order to guarantee a reliable operation of the pumping system during the entire service life of the laundry appliance, special demands must be placed on the geometry of the inlet opening. By means of the transfer by pumping of the laundry, the impurities can be deposited in certain places in the system of transfer by pumping of the appliance for the care of the laundry and due to this obstruct certain areas of the system of transfer by pumping.

The deflection zone can be positioned at a certain distance from the entrance opening, to prevent the space between the entrance opening and the deflection area being obstructed by impurities. Thus, it is possible to operate a laundry care device with a pumping system that effectively transfers washing liquid to the washing tank and does not become clogged due to the deposit of impurities.

When the jet of washing liquid collides with the deflection zone, high shear forces result in the washing liquid, whereby the washing liquid jet is divided into a plurality of drops of washing liquid. By means of the external conformation of the deflection area, a desired geometry can be adjusted for the jet of washing liquid, such as for example a fan jet. The resultant washing liquid drops form a mixture of washing liquid and air, a mist of washing liquid, which is sprayed into the washing tank. By distributing the washing liquid drops, a large surface of the washing tank can be wetted with washing liquid, whereby the washing liquid can be supplied in an advantageous distribution to the laundry. In this way effective wetting of the laundry can be achieved.

Under an appliance for the care of the laundry is understood an apparatus that is used to take care of the laundry. In particular, a domestic appliance for the care of the laundry is understood under a laundry appliance. That is to say, an apparatus for the care of the laundry that is used in the framework of the government of the house and with which it is treated cast in usual quantities in the house.

The fact that the pipe connects the inlet opening with the drain opening means in particular that the pipe starts at the drain opening and ends at the inlet opening. That is, for example that according to one embodiment, a first end of the pipe is formed by the inlet opening. That is, for example, according to one embodiment, a second end of the pipe is formed by the drain opening. The pipeline does not penetrate into the wash tank. The washing liquid therefore flows from the tubing directly through the inlet opening into the wash tub. As soon as the washing liquid has passed through the inlet opening, it is freely in the wash tank.

In one embodiment, the wash tub is free of a segment of the tubing that penetrates the wash tub.

Since the tubing terminates in the inlet opening, the wash tub being thus free of a segment of tubing penetrating the wash tub, the technical advantage is realized in particular that the tubing can be made leak-tight in an efficient manner. in the entrance opening. This in particular compared to the case where a pipe penetrates through an inlet opening in the wash tub.

In one embodiment, the inlet opening is formed in a wall of the washing tub, the inlet opening being constituted as a perforation from an inner side in the wall of the washing tub to an outer side of the wall of the washing tub. wash bucket. The pipe ends preferably in the drilling on the outer side.

According to one embodiment, a cross section of the inlet opening corresponds to a cross section of the pipe.

In one embodiment, a cross section of the inlet opening corresponds to a cross section of the pipeline corresponding to a segment of the pipeline immediately before the inlet opening, referred to a direction of the flow of the washing liquid. That is to say, that the segment of the pipe which is immediately before the entry opening, referred to a direction of the flow of the washing liquid, does not narrow, ie, it does not have any narrowing.

The wash liquid evacuated by pumping through the inlet opening means wash liquid that has left the pipeline through the inlet opening and is inside the wash tank. This wash liquid evacuated by pumping is then deflected by the deflection zone. The deflection area is, according to one embodiment, spaced from the entrance opening. In one embodiment, the deflection element is arranged or fixed in / to the wash tank. That is, that the deflection element is arranged or fixed, according to one embodiment, on / to an interior wall of the washing tub. In this way, for example, the technical advantage is realized that the deflection element can be mounted independently of the entry opening.

The washing liquid evacuated by pumping forms, according to one embodiment, a jet of water, in particular a round jet, that is to say a round water jet. A round jet in particular has a water flow with a preferred direction or main direction.

In an advantageous embodiment of the laundry care apparatus, the deflection area is disposed at a certain distance from the entry opening, the distance being greater than the diameter of the pipe.

In this way the technical advantage is achieved that by choosing the distance between the deflection zone and the entry opening, an obstruction of the intermediate space between the deflection zone and the entry opening is avoided.

During a pumping transfer process, impurities are pumped through the pumping system. The size of the impurities is limited by the diameter of the pipe, since impurities greater than the diameter of the pipe can not be pumped through the pipe. To prevent an obstruction of the inlet opening, the inlet opening is not narrowed, but the deflection area of the deflection element is placed at a distance from the inlet opening that is greater than the diameter of the pipe. In this way, it is ensured that impurities that are of sufficient size to pass through the pipeline do not obstruct the intermediate space between the inlet opening and the deflection zone. In this way, an appliance for the care of the laundry can be operated with a system of transfer by pumping that is not blocked due to the deposit of impurities.

In a further advantageous embodiment of the laundry care apparatus, the deflection zone includes a surface against which the wash liquid evacuated by pumping can be injected in order to spray the washing liquid into the wash tank.

In this way, the technical advantage is achieved that an effective spraying of washing liquid in the washing tank can be achieved by means of the surface of the deflection zone. When the jet of washing liquid strikes the surface of the deflection zone, the jet of washing liquid is deflected from the surface with a deflection angle. In this way, the jet of washing liquid is injected into the wash tank with a modified flow direction by the deflection zone. When the jet of washing liquid collides with the surface, a plurality of wash liquid droplets are formed, which can be sprayed into the wash tub in a direction of the flow modified by the deflection zone. By positioning the surface of the deflection area, the geometry of the washing liquid stream can be influenced, whereby, for example, from the round jet a fan jet flows, which can wet the melt superficially on the surface. washing drum. In this way, an effective supply of washing liquid to the washing tank is guaranteed, without obstructing the inlet opening.

In another advantageous embodiment of the laundry care apparatus, the surface of the deflection zone is located at an angle of between 25 ° and 65 ° with respect to the direction of injection of the washing liquid evacuated by pumping from the opening of entry.

In this way the technical advantage is achieved that by means of the inclined arrangement of the surface of the deflection zone an effective injection of washing liquid into the washing tank can be achieved. When the jet of washing liquid is deflected on the surface of the deflection zone, the jet of washing liquid is deflected from the surface with a deflection angle. An effective deflection of the washing liquid jet is only possible when the surface of the deflection zone is at an angle with respect to the flow direction of the washing liquid evacuated by pumping through the inlet opening. An angle of the surface of between 25 ° and 65 ° with respect to the direction of flow of the washing liquid evacuated by pumping through the inlet opening has been found to be especially advantageous to achieve an effective deviation of the flow direction of the jet of washing liquid, so that the washing liquid can be sprayed into the washing tub. In an advantageous embodiment, the angle of the surface with respect to the flow direction of the washing liquid evacuated by pumping through the inlet opening is about 45 °.

In a further advantageous embodiment of the laundry care apparatus, the deflection element is constituted as a curved metal plate, a rubber plate or as a plastic plate.

In this way the technical advantage is achieved that the use of a curved metal plate, a curved rubber plate or a curved plastic plate causes an advantageous deflection of the washing liquid jet. The constitution of the deflection element as a plate provides a sufficiently large surface, on which the jet of washing liquid evacuated by pumping from the inlet opening can be deflected. In particular, a part of the washing liquid can be prevented from passing directly past the deflection area of the deflection element. In particular, metal, rubber or plastic may be accommodated in the system for transferring by pumping of a laundry care apparatus, since the materials used do not damage during the operation of the appliance for the care of the laundry due to the washing liquid. . Thus, an effective injection of washing liquid into the washing tub during the operating time of the laundry care apparatus is achieved.

In another advantageous embodiment of the laundry care apparatus, a surface of the deflection area includes a cavity, a groove or a rib.

In this way, the technical advantage is achieved that by using the cavity, groove or rib on the surface of the deflection zone an effective deflection of the injected washing liquid on the deflection zone is achieved. Due to the cavity, the groove or the rib, the surface of the deflection area is not smooth, but has irregularities which, when the washing liquid is deflected, give rise to an irregular behavior as regards the spraying of the washing liquid in the tank. washed. In this way, an advantageous injection of the washing liquid jet conducted on the surface of the deflection area can be achieved. A plurality of wash liquid droplets then result, which can cause an effective spray in the wash tank upon modification of the direction of flow due to the deflection zone.

In another advantageous embodiment of the laundry care apparatus, the deflection element includes a base area that connects the tubing with the deflection area.

In this way the technical advantage is achieved that the base area of the deflection element can fix the deflection area in a stable manner to the pipe, such that the deflection zone can be positioned at an advantageous distance from the entry opening. The base zone can be configured such that it does not block the injection path of the wash liquid evacuated by pumping from the pipe, but is fixed at one end in an outer zone of the pipe and at the other end is fixed to the deflection zone. Due to this, a stable fixation of the deflection element to the pipe is achieved, without the base zone blocking or obstructing the jet of washing liquid evacuated by pumping the pipe. In this way, an effective collision of the jet of washing liquid against the deflection zone is ensured. In another advantageous embodiment of the laundry care apparatus, the base area is constituted as a bar, a rib or a plate.

In this way the technical advantage is achieved that by means of the constitution of the base zone as bar, rib or plate an advantageous stabilization of the deflection zone in the pipe is possible, without the base zone blocking or obstructing the jet of water. Washing liquid evacuated by pumping the pipe. In a further advantageous embodiment of the laundry care apparatus, the inlet opening is arranged on the front side or on the upper side of the washing tank and the drain opening is arranged on the underside of the washing tank. .

In this way, the technical advantage is achieved that by means of the corresponding positioning of the drain opening and the inlet opening, an effective contribution of washing liquid to the washing tank is possible. The drain opening is located on the lower side of the washing tank and is advantageously arranged such that it allows the flow of washing liquid to escape from the washing tank. The inlet opening is located on the upper side or on the front side of the laundry care apparatus, for example in the vicinity of the sleeve. In this way, it is possible to supply the washing liquid from the pipeline from the top or from the side to the washing tank, which makes it possible to transfer by effective pumping of the washing liquid into the transfer system. by pumping.

In a further advantageous embodiment of the laundry care apparatus, the deflection element is arranged on the front side or on the upper side of the washing tub.

In this way, the technical advantage is achieved that by means of the corresponding positioning of the deflection element on the front side or on the upper side of the washing tub, an effective spraying of the washing liquid into the washing tub is possible. When the jet of washing liquid is evacuated by pumping the pipe and collides with the deflection area of the deflection element in the interior of the wash tank, the jet of washing liquid is deflected and a splash of the liquid is produced. of washing. Since the deflection element is disposed in the interior space of the washing tray, it is ensured that the spilled washing liquid is completely received in the washing tray and that the washing liquid when splashed can not come out of the tray. washed.

In a further advantageous embodiment of the laundry care apparatus, the pumping system includes a filling level sensor, the filling level sensor being designed to capture a level of washing liquid filling in the wash tank. washing and the pump being constituted so that the power of the pump is regulated according to the level of filling captured.

In this way the technical advantage is achieved that by regulating the power of the pump as a function of the level of filling captured for the washing liquid in the washing tank, the sprayed amount of washing liquid can be regulated in the tank of washed. When the wash tub has a high wash liquid fill level, the power of the pump can be increased so that a larger amount of wash liquid flows through the vent opening out of the tub. It is pumped through the pipeline and sprayed into the wash tank using the deflection element. When the washing tank has a low filling level of washing liquid, the pumping power of the pump can be reduced, in order to avoid a dry running of the washing tank. In this way an effective control of the pumping system is achieved according to the level of filling captured for the washing liquid in the washing tank.

In a further advantageous embodiment of the laundry care apparatus, a flow sensor is arranged in the pipeline, the flow sensor being designed to capture a flow rate of the washing liquid over a period of time in the pipeline and The pump is constituted so that the power of the pump is regulated as a function of the speed of the flow captured in the time interval. In this way, the technical advantage is achieved that by means of the collection of the flow velocity the quantity supplied to the washing tub of the spray washing liquid can be regulated, as well as the spray behavior of the washing liquid. Since a high flow rate in the pipeline is supplied with a large amount of washing liquid over the time interval, a correspondingly large quantity of washing liquid is sprayed into the wash tank in comparison with a low flow rate. through the deflection element. The speed of the flow of washing liquid in the pipeline also influences the behavior regarding the spraying of the washing liquid, since the jet of washing liquid, for a high speed of flow in the pipe, collides with a great speed against of the deflection area and in this way results in a more intense splash of washing liquid. In this way a strong splash of washing liquid is achieved and the washing liquid can be sprayed effectively into the washing tub. In this way effective wetting of the laundry in the washing drum can be achieved.

In another advantageous embodiment of the laundry care device, the pump is constituted so that the frequency of the pump or the pump pressure or the flow rate provided by the pump can be modified to regulate the power of the pump.

In this way, the technical advantage is achieved that the pump, modifying the frequency of the pump or the pressure of the pump or the pump delivery flow, can regulate the speed of the flow of washing liquid in the pipeline and thereby the amount of washing liquid supplied to the wash tank. When a small amount of washing liquid is to be injected through the deflection element into the washing tub, the power of the pump can be reduced. When a large amount of washing liquid has to be injected into the wash tank, the power of the pump can be increased. In this way, the contribution to the wash tank of the amount of washing liquid actually necessary for the laundry care process is achieved and the spray behavior of the spray liquid in the wash tank can be modified.

In a further advantageous embodiment of the laundry care apparatus, the wash tank includes a cavity for the deposition of impurities in the drain opening.

In this way, the technical advantage is achieved that impurities, such as lint, can be effectively deposited in the cavity of the wash tank and thus be eliminated from the pumping system. When the impurities are deposited in the cavity of the wash tank, impurities are prevented from being pumped through the pipe. In this way it can be prevented that the transfer system is blocked by pumping with impurities.

In a further advantageous embodiment of the laundry care apparatus, the pumping system includes a filter unit, the filter unit being arranged in the pipeline or in the drain opening and the filter unit preferably including a filter unit. trap or trap for foreign bodies, to remove foreign bodies.

In this way, the technical advantage is achieved that impurities or foreign bodies can be effectively removed from the washing liquid by means of the filter unit. In particular, the impurities of the tub or washing tub can be filtered in the vicinity of the drain opening of the washing tub, whereby the impurities can be prevented from clogging the tubing or the inlet opening of the transfer system. pumping.

Exemplary embodiments of the invention are depicted in the drawings and will be described in more detail below.

It is shown in:

1 is a schematic view of a laundry care apparatus;

2 shows a schematic view of a pumping system with a wash tank and figure 3 a schematic view of a deflection element in a pumping system.

Figure 1 shows a schematic view of a general apparatus for the care of laundry 100, such as for example a washing machine. The laundry care apparatus 100 includes a tank 101, which is filled by introducing detergent or other liquid substances. The laundry care apparatus 100 includes a door 103 for loading the laundry care apparatus 100 with the laundry.

Figure 2 shows a view of a pumping system 105 in a laundry care apparatus 100 with a wash tub 107, including an inlet opening 109 and a drain opening 111. The inlet opening 109 it is connected to the drain opening 111 by a pipe 113. The pipe 113 includes a pump 115, which is integrated in the pipe 113. The pump 115 pumps the washing liquid through the drain opening 111 from the washing tank 107. to the pipe 113 and pump the washing liquid through the inlet opening 109 back to the washing tank 107. In this way a transfer by effective pumping of the washing liquid into the pumping system 105 can be achieved.

Figure 3 shows a view of the deflecting element 117 in a pumping transfer system 105. The deflecting element 117 includes a deflection area 119 and a base region 121. The pipe 113 opens into the inlet opening 109 in the Wash bucket 107. In this way, washing liquid 107 can be supplied to the wash tub 107, which is pumped through the tubing 113. The base zone 121 is fixed to one end of the tubing 113 in the vicinity of the opening. 109. The base zone 121 is connected to the deflection area 119. By the base area 121, a stable fixation of the deflection element 117 to the pipe 113 is achieved.

Through the pipe 113, washing liquid is conducted in the direction of the flow 123. The washing liquid enters through the inlet opening 109 of the pipe 113 as a stream of washing liquid and collides with the deflecting element 117. The base area 121 is thus arranged such that it does not impede the jet of washing liquid, whereby it can hit against the deflection area 119. When the washing liquid strikes the deflection area 119, it deviates the flow of washing liquid and spraying it, in a direction of the diverted flow 125, into the washing tub 107.

By means of the shock of washing liquid against the deflecting element 117 not only varies the direction of the initial flow 123 of the jet of washing liquid, but also the flow of washing liquid is distributed, due to the shearing forces, in droplets of washing liquid, resulting in a mixture of washing liquid with air, which can be sprayed in the washing tub 107. In this way an effective distribution of the spray liquid sprayed on the laundry in the washing tub 107 is achieved. .

In order to achieve an effective deviation of the flow direction 125 of the washing liquid, the pipe 113 must have a diameter 127 (d1) which is less than the distance 129 (d2) between the entry opening 109 and the location of the deflection 119 which is connected with the base area 121. Since the distance 129 (d2) is greater than the diameter 127 (d1) of the pipe 113, impurities which pass through the pipe 113 and exit through the inlet opening are prevented. 109, obstruct the intermediate space between the entrance opening 109 and the deflection area 119.

By means of the shape configuration of the deflecting element 117, an effective spraying of the washing liquid in the washing tub 107 can be ensured. In particular, the external geometrical shape of the inlet opening 109 can be influenced by the spraying scheme. the nozzles without the intermediate space between the inlet opening 109 and the deflection zone 119 of the pipe 113 being obstructed. The obstruction of the inlet opening 109 can be avoided, because the spray pattern of the water jet is not made based on the narrowing of the inlet opening 109, but at the distance 129 (d2) between the inlet opening 109 and the deflection zone 119. Thus a pumping transfer system 105 can be provided which makes possible a transfer by effective pumping of washing liquid, without endangering the contribution of washing liquid to the washing bucket 107 due to an obstruction .

All the features described and shown in relation to different embodiments of the invention can be provided in different combinations in the object according to the invention, to carry out simultaneously their advantageous effects.

The scope of protection of the present invention is given by the claims and is not limited by the features explained in the description or shown in the figures.

List of references

100 laundry care appliance

101 deposit

103 door

105 pumping transfer system

107 washing bucket

109 entry opening

drain opening

pipeline

bomb

deflection element

deflection zone

base area

Direction of the flow of the washing liquid

Direction of the flow of the diverted washing liquid diameter of the pipe

distance between entrance opening and deflection area

Claims (13)

Casting care apparatus (100) with a pumping transfer system (105), including a washing tub (107) for receiving washing liquid, including the washing tub (107) an inlet opening (109) and a drain opening (111), a pipe (113) connecting the inlet opening (109) and the drain opening (111) and a pump (115) for pumping washing liquid from the drain opening. (111) through the pipe (113), to the inlet opening (109), characterized in that the pumping transfer system (105) includes a deflection element (117) with a deflection area (119) to deflect washing liquid evacuated by pumping from the inlet opening (109) to the washing tub (107), wherein the deflection zone (119) is disposed at a certain distance (129) from the entrance opening (109), the distance (129) being greater than the diameter (127) of the pipe (113), including the deflection element (117) a base area (121) connecting the pipe (113) with the deflection area (119), the base area (121) being configured such that it does not block the injection path of the liquid of washing evacuated by pumping from the pipe (113), but is fixed at one end in an outer area of the pipe (113) and at the other end is fixed to the deflection area (119). 2. Laundry care apparatus (100) according to claim 1, characterized in that the deflection zone (119) includes a surface against which the wash liquid evacuated by pumping can be injected, for spraying the washing liquid in the washing tub (107). 3. Laundry care apparatus (100) according to claim 2, characterized in that the surface of the deflection area (119) is at an angle of between 25 ° and 65 ° with respect to the direction of injection of the washing liquid evacuated by pumping from the inlet opening (109). Casting care apparatus (100) according to one of the preceding claims, characterized in that the deflecting element (117) is constituted as a curved metal plate, a rubber plate or as a plastic plate. Casting care apparatus (100) according to one of the preceding claims, characterized in that the surface of the deflection area (119) includes a cavity, a groove or a rib. Casting care apparatus (100) according to one of the preceding claims, characterized in that the base area (121) is constituted as a bar, a rib or a plate. Casting care apparatus (100) according to one of the preceding claims, characterized in that the inlet opening (109) is arranged on the front side or on the upper side of the washing tub (107) and because the drain opening (111) is disposed on the underside of the washing tub (107). Casting care apparatus (100) according to one of the preceding claims, characterized in that the deflection element (117) is arranged on the front side or on the upper side of the washing tub (107). Casting care apparatus (100) according to one of the preceding claims, characterized in that the pumping transfer system (105) includes a filling level sensor, because the filling level sensor is configured for to obtain a level of filling of washing liquid in the washing tank (107) and because the pump (115) is constituted so that the power of the pump is regulated in function of the captured level of filling. Casting care apparatus (100) according to one of the preceding claims, characterized in that a flow sensor is arranged in the line (113). because the flow sensor is configured to capture a speed of the flow of washing liquid in a time interval in the pipeline (113) and because the pump (115) is constituted so that the power of the pump is regulated according to the speed of the flow captured in the time interval. 11. Laundry care apparatus (100) according to claim 10, characterized in that the pump (115) is configured to modify the frequency of the pump (115) or the pump pressure or the flow rate provided by the pump (115), to regulate the power of the pump. Casting care apparatus (100) according to one of the preceding claims, characterized in that the washing tub (107) includes a cavity for the deposition of impurities in the drain opening (ill). Laundry care appliance (100) according to one of the preceding claims, characterized in that the pumping transfer system (105) includes a filter unit, the filter unit being arranged in the tubing (113) or in the drain opening (111) and because the filter unit preferably includes a sensor or trap for foreign bodies, to remove foreign bodies.