DE102018221092A1 - Water-bearing household appliance - Google Patents

Abstract

The invention relates to a water-carrying household appliance (1) with a pump unit (53) for pumping around and / or pumping off the fluid (34) present during a cleaning and / or drying process. Furthermore, the water-carrying household appliance (1) comprises a drive unit (55) for essentially driving the pump unit (53), a control unit (57) for controlling the drive unit (55) and a filter unit (15) for filtering the fluid (34) The filter unit (15) has a filter surface (36) through which the first filter area (41) for flowing through the fluid (34) and at least a second filter area (43) for flowing through the fluid (34), wherein between the first filter area ( 41) and the at least one second filter area (43) a movable separating element (19) is arranged so that in a closed state of the filter unit (15) the fluid (34) essentially flows through only one of the two filter areas (41, 43).

Description

The invention relates to a water-bearing household appliance.

Filter units used for filtering fluids are used in water-bearing household appliances. This fluid can be a water-soap mixture, such as is used in washing machines or dishwashers and / or washer-dryers, or can consist of steam or process air, such as is used in dryers and / or washer-dryers. In the operation of these water-carrying household appliances, dirt particles get into the respective fluid during a cleaning or drying process. The dirt particles can Food residues, hair, fats, sand, fibers from laundry items, microplastic particles and / or dust or dirt particles.

These dirt particles can be filtered by a filter unit during and / or after the cleaning or drying process. During the cleaning or drying process, one and / or several pumping processes can be carried out, in which the fluid is pumped around, cleaned of dirt particles and reintroduced into the cleaning or drying process. After a cleaning or drying process, the so-called residual fluid remains, which is rich in dirt particles. This residual fluid is generally no longer required and is pumped out of the water-carrying household appliance and fed into a spout or a drain line. Before it is fed into the pouring spout, the fluid is again passed through the filter unit, as a result of which less or almost no dirt particles get into the waste water or into the waste water system.

Filter systems in washing machines are, among other things, from the font WO 201720725 A1 known. In this document, a washing machine with a filtration unit is described, in which the filtration unit is arranged between a tub and a feed line to the tub. The filtration unit consists of several filter elements that are arranged in a row next to each other. Each of these filter elements has a first membrane structure with a large pore size and a second membrane structure with a small pore size, the second membrane structure being suitable for filtering out microfibers.

In another publication, the WO 2013068300 A1 , a filter unit of a washing machine or a dishwasher is disclosed. The filter unit has a plurality of individual filter assemblies, which are arranged either in series, partially in succession or next to one another. Each filter assembly has a filtrate line that essentially directs the fluid to the tub. The individual filter assemblies each have a filter membrane with different pore sizes.

As can be seen from the two documents cited above, various filter systems for water-bearing domestic appliances are known from the prior art, which filter dirt particles and fibers from a fluid. Since the filters clog very quickly, it is imperative to clean these filters, especially the filter membrane.

It is therefore the object of the invention to design a water-conducting household appliance with a filter unit, in which the cleaning of the filter unit can be carried out simply, quickly and cleanly by the user.

This object is achieved by the features of patent claim 1. Advantageous embodiments are the subject of the dependent claims, the description and the drawings.

According to one aspect, the object according to the invention is achieved by a water-carrying household appliance, the water-carrying household appliance comprising a pump unit for pumping around and / or pumping out the fluid present during a cleaning and / or drying process. Furthermore, the household appliance according to the invention has a drive unit for essentially driving the pump unit, a control unit for actuating the drive unit and a filter unit for filtering the fluid, the filter unit having a filter surface through which the first filter area for flowing through the fluid and at least a second filter area for flowing through the fluid. A movable separating element is arranged between the first filter area and the at least one second filter area, so that when the filter unit is closed, the fluid essentially flows through only one of the two filter areas.

Since the fluid only flows through one of the two filter areas in a closed state of the filter unit, the fluid can flow through the at least one further filter area if the one filter area becomes blocked.

Advantageously, a filter container is provided on the inflow side, which has at least one opening through which the fluid flows into the filter container, a filter frame and the filter surface, which can be at least partially flowed through, being arranged on the filter container in the flow direction, the separating element being arranged on the filter frame is.

The fluid is pumped into the filter unit by the pump unit and acts on the filter frame in the direction of flow. The fluid is conducted from the separating element arranged on the filter frame to the first filter area. In this filter area, the fluid is filtered from the filter surface. The fluid moves on by gravity alone. This eliminates the need for additional pump units that pump the fluid through the pump unit, as well as drive and control units.

The filter frame preferably has a circumferential wall, the separating element being arranged within the circumferential wall and the circumferential wall and the separating element each having sealing elements on an end face facing the filter surface. The sealing elements of the surrounding wall and the separating element lie on the filter surface in the closed state.

In the closed state of the filter unit, the sealing elements of the peripheral wall and the separating element rest on the filter surface in such a way that it is ensured that the fluid flows into the filter area provided for this purpose and makes flow into the at least one further filter area almost impossible.

Another aspect of the invention is that the filter frame can be arranged in the closed state, in a partially closed state and in an open state, the sealing element of the circumferential wall and the sealing element of the separating element abutting the filter surface in the closed state. In the partially closed state, the sealing element of the circumferential wall lies against the filter surface and the sealing element of the separating element is essentially spaced from the filter surface. In the open state, the sealing element of the peripheral wall and the sealing element of the separating element are spaced from the filter surface.

It is thereby achieved that the fluid flows through the first filter area in the closed state of the filter frame without flowing into the at least one second filter area. In contrast, in the partially closed state of the filter frame, the sealing element of the separating element is spaced from the filter surface, so that the fluid can flow from the first filter area into the at least one second filter area, while the sealing element of the peripheral wall still lies on the filter surface, so that the fluid is held in the filter unit. If the fluid that has collected in the first filter area when the first filter area is clogged has flowed through the at least one second filter area by slightly lifting the filter frame, the filter frame can be opened completely without the fluid being able to flow out of the filter unit in an uncontrollable manner.

It is particularly advantageous if the circumferential wall of the filter frame has at least one extendable element. If the filter area of the filter unit to be flowed through becomes blocked, the filter unit or the filter surface must be cleaned. The separating element is spaced from the filter surface, while the peripheral wall with the at least one extendable element still rests on the filter surface. This prevents that when the filter unit is opened, the fluid containing dirt particles in the filter unit flows into the household appliance comprising the filter unit and / or, for example, into a living area and / or the user's laundry room.

The at least one extensible element of the circumferential wall of the filter frame preferably has elastic elements. The elastic elements can consist of shape memory alloys, spring-like and / or rubber-like elements. Other stretchable and regressive elements are also conceivable. The sealing elements of the at least one circumferential wall rest against the filter surface when the filter frame is slightly raised, while the separating element is spaced from the filter surface.

It is also conceivable that the at least one extensible element of the circumferential wall of the filter frame is movably mounted. This can be done for example by means of an electrical and / or mechanical drive.

In an advantageous embodiment, the first filter area is larger than the at least one second filter area. The first filter area is the filter area through which the fluid flows when the water-carrying household appliance is in operation. The at least one second filter area is required to drain the fluid when the first filter area is blocked.

Preferably the fluid flows through the first filter area in the closed state of the filter frame and the fluid flows predominantly through the second filter area in the partially closed state of the filter frame. The fluid only flows through the at least one second filter area when the first filter area should be blocked and the filter frame is brought into the partially closed state. This ensures that the at least one second filter area can be flowed through in the partially closed state, so that the fluid Blockage of the first filter area can properly flow out of the filter unit.

In order to make cleaning the filter unit as simple as possible, the filter frame and / or the filter surface of the filter container are designed to be removable.

If the first filter area becomes blocked, the fluid can no longer flow out of the first filter area and collects in this area. In the following we speak of residual fluid. In order to achieve a rapid outflow of the residual fluid, it is therefore advantageous if the filter surface comprises a plurality of individual second filter areas, the plurality of individual second filter areas each being designed to form a seal toward the first filter area when the filter frame is in the closed state.

The separating element is advantageously designed in the form of a stamp and the end face of the separating element lies flat on the filter surface in the closed state. The stamp-shaped separating element enables a simple manufacturing process for the separating element and the sealing element attached to it.

According to a second aspect of the invention, the object is achieved by a method for filtering fluids in a water-bearing household appliance. The water-conducting household appliance comprises a pump unit for pumping around and / or pumping off the fluid present during a cleaning and / or drying process, a drive unit for essentially driving the pump unit, a control unit for controlling the drive unit and a filter unit for filtering the fluid. Furthermore, the filter unit has a filter surface that can be flowed through, which has a first filter area through which the fluid flows and at least one second filter area through which the fluid flows at least partially, with a between the first filter area and the at least one second filter area movable separating element is arranged such that in a closed state of the filter frame, the fluid essentially flows through only one of the two filter oaks.

This achieves the technical advantage that an area of the filter surface is spared from flowing through the fluid during a filtering process, so that if one filter area becomes blocked, the fluid can flow or flow through the recessed filter area.

The filter unit preferably has a filter frame and the filter surface, the separating element and a circumferential wall being arranged on the filter frame. Furthermore, sealing elements are provided on an end face of the separating element and on the circumferential wall. The filter frame can be arranged in the closed state. The filter frame can be moved into a partially closed state by moving and into an open state by further movement, the sealing element of the circumferential wall and the sealing element of the separating element in the closed state lying against the filter surface. By moving the filter frame into the partially closed state, the sealing element of the circumferential wall lies against the filter surface and the sealing element of the separating element is essentially spaced apart from the filter surface. By moving the filter frame further into the open state, the sealing element of the circumferential wall and the sealing element of the separating element are spaced from the filter surface.

• 1 zeigt eine schematische Frontansicht eines wasserführenden Haushaltsgeräts, hier beispielsweise eine Waschmaschine;
• 2 zeigt eine schematische Draufsicht eines Filterrahmens;
• 3 zeigt eine schematische Seitenansicht einer Filtereinheit mit einem beispielhaften Filterrahmen;
• 4 zeigt eine schematische Seitenansicht einer Filtereinheit mit einem beispielhaften Filterrahmen, wobei sich der Filterrahmen in einem geschlossenen Zustand befindet;
• 5 zeigt eine schematische Seitenansicht einer Filtereinheit mit einem beispielhaften Filterrahmen, wobei sich der Filterrahmen in einem teilweise geschlossenen Zustand befindet;
• 6 zeigt eine schematische Seitenansicht einer Filtereinheit mit einem beispielhaften Filterrahmen, wobei sich der Filterrahmen in einem offenen Zustand befindet;
• 7a zeigt eine schematische Draufsicht einer weiteren Ausführungsform eines Filterrahmens;
• 7b zeigt eine schematische Unteransicht einer weiteren Ausführungsform eines Filterrahmens, wobei ein Trennelement stempelförmig ausgebildet ist;
• 7c zeigt eine schematische Draufsicht einer weiteren Ausführungsform eines Filterrahmens;
• 8 zeigt schematisch, in stark vereinfachter Form, ein Zirkulationsprinzip eines wasserführenden Haushaltsgeräts.

Further properties and advantages of the present invention will become apparent from the following description with reference to the drawings.

• 1 shows a schematic front view of a water-carrying household appliance, here for example a washing machine;
• 2nd shows a schematic plan view of a filter frame;
• 3rd shows a schematic side view of a filter unit with an exemplary filter frame;
• 4th shows a schematic side view of a filter unit with an exemplary filter frame, wherein the filter frame is in a closed state;
• 5 shows a schematic side view of a filter unit with an exemplary filter frame, wherein the filter frame is in a partially closed state;
• 6 shows a schematic side view of a filter unit with an exemplary filter frame, wherein the filter frame is in an open state;
• 7a shows a schematic plan view of a further embodiment of a filter frame;
• 7b shows a schematic bottom view of a further embodiment of a filter frame, wherein a separating element is designed in the form of a stamp;
• 7c shows a schematic plan view of a further embodiment of a filter frame;
• 8th shows schematically, in a greatly simplified form, a circulation principle of a water-bearing household appliance.

In 1 is a schematic front view of a water-bearing household appliance 1 , especially a washing machine. The water-bearing household appliance 1 is particularly suitable for treating laundry. Furthermore, under a water-bearing household appliance 1 a dryer, a washer dryer or a dishwasher can also be read. In the following, for the sake of simplicity, only the washing machine is used as a water-carrying household appliance 1 described in more detail.

The water-bearing household appliance 1 in 1 has a washing machine front wall 3rd on. On the front of the washing machine 3rd is among other things a movable induction bowl 5 , into which a laundry care substance, such as a detergent and / or a fabric softener, can be filled, and a washing machine display unit 7 , which can be used to set a wash program. There is also a hinged washing machine door 9 and a cleaning hatch (not shown) by means of a cleaning hatch cover 11 is hidden on the front of the washing machine 3rd of the water-bearing household appliance 1 arranged.

A schematic top view of a filter frame 13 that in a filter unit 15 is arranged in 2nd shown. The filter frame 13 has a surrounding wall 17th and a separator 19th on, with the separating element 19th within the surrounding wall 17th is arranged. The separator 19th is preferably fixed to the filter frame 13 connected. But it is also conceivable that the separating element 19th from the filter frame 13 is separable. On one end 21st of the filter frame 13 and thus on the face of the surrounding wall 17th is a sealing element 23 educated. The sealing element 23 can be designed as a sealing ring. However, there are also other configurations of the sealing element known to the person skilled in the art 23 conceivable.

Furthermore, the separating element 19th another sealing element 25th on. The sealing element 25th of the separating element 19th is preferably on an end face of the separating element 19th arranged and preferably has identical or similar properties and configurations as the sealing element 23 the surrounding wall 17th on. The sealing element 25th of the separating element 19th can also differ in its properties and configurations from the sealing element 23 the surrounding wall 17th differentiate.

The filter frame 13 is preferably designed such that the filter frame bends 13 when inserting and / or removing from the filter unit 15 is prevented. The filter frame is preferably made 13 made of a polymer or a polymer-like material. However, different types of materials for the manufacture of the filter frame, which are known to the person skilled in the art, can also be used 13 be used. Furthermore, the filter frame 13 be designed as a type of cover element and is therefore suitable for the filter unit 15 to close.

As already described above, the separating element is 19th of the filter frame 13 designed as a predominantly rigid element. However, if a desired flexibility of the separating element 19th is desired, it is also conceivable that the separating element 19th is designed as an at least partially flexible element.

The surrounding wall 17th has at least one extensible element 27th on that in 3rd to 7c is shown. The at least one extensible element is preferably 27th in the area of the face 21st of the filter frame 13 educated. The at least one renewable element 27th can be designed as an elastically extendable element. But it is also conceivable that the at least one extendable element 27th the surrounding wall 17th of the filter frame 13 forms. That at least one elastic element 27th can for example be provided with spring elements and / or rubber-like elements. However, other elastic elements are also conceivable.

It is also conceivable that the extendable elements 27th the surrounding wall 17th of the filter frame 13 are movably mounted. This embodiment is discussed in more detail below.

Furthermore, in 3rd a drain pipe 29 the filter unit 15 shown. The drain nozzle 29 has a circumferential wall element 31 on and is tubular. One preferably the filter unit 15 first parking level all around 33 is in the surrounding wall 31 of the drain connector 29 trained on which the extendable elements 27th in a closed state of the filter unit 15 lie on. In the area of the parking level 33 is in the filter unit 15 a filter membrane 35 arranged. The filter membrane 35 has a filter surface 36 on that spans the entire cross section B of the drain connector 29 extends. From one direction of flow A (Arrow in 3rd ) of a fluid 34 considered, the drain socket 29 a partition 37 exhibit. The partition 37 is preferably only partially in the drain pipe 29 educated. Furthermore, the partition wall 37 a second parking level 39 on that the filter frame 13 and especially the separating element 19th is facing. When the filter unit is closed 15 is the separator 19th with the sealing element 25th on the second parking level 39 such that the filter membrane 35 between the sealing element 25th of the separating element 19th and the second stage 39 the partition 37 is included.

Under the movably mounted at least one extendable element 27th it is understood that the at least one extensible element 27th extended from the movement. The renewable element can only be used as an example 27th be constructed like a two-part telescopic rod, the two elements forming the telescopic rod not being rigidly connected to one another.

In relation to the present case, when the filter frame is raised 13 the at least one renewable element 27th towards the filter membrane 35 or the first shutdown level 33 of the drain connector 29 moved, so that an extension of the surrounding wall 17th he follows. The movably mounted at least one extendable element 27th can be driven, for example, by an electrical and / or mechanical drive, for example by a gear, in particular by a link gear. This means that when the filter frame is moved 13 a release of the sealing element from the closed state into the open state 23 the surrounding wall 17th be delayed so that the filter frame 13 is first moved to the partially closed state. The time delay is described in more detail below. However, other types of gears, such as a gear and / or chain gear, can also be used. A combination of different types of gear and / or an electrically controllable gear is also conceivable.

In 4th is the closed state of the filter frame 13 shown. When the filter frame is closed 13 these are at least one renewable elements 27th at least partially in the peripheral wall element 31 of the drain connector 29 added. The face 21st the surrounding wall 17th and the separator 19th and thus the two sealing elements 23 , 25th the surrounding wall 17th and the separator 19th are on the first level 33 and on the second parking level 39 on. Between the sealing elements 23 , 25th and the two parking levels 33 , 39 is the filter membrane 35 added. The filter surface 36 is from the separating element 19th and the sealing element 25th of the separating element 19th into a first filter area 41 and in at least a second filter area 43 divided. The first filter area is preferably 41 larger than the at least one second filter area 43 educated.

The filter unit 15 has a filter container 44 on. In this filter container 44 are the filter frame 13 and the filter membrane 35 arranged. Furthermore, in the filter container 44 the drain connector 29 be arranged. But it is also conceivable that the drain connector 29 in the filter container 44 is integrated.

The filter container 44 includes an opening 46 ( 8th ) through which the fluid 34 in the filter container 44 flows. The opening 46 is in the area of the filter frame 13 trained so that the fluid 34 the filter membrane 35 can flow through. Inside the filter container 44 the filter unit 15 the fluid flows 34 , which in washing machines and / or dishwashers mainly consists of water or a wash liquor, due to gravity. In the 3rd is through the arrow A the direction of flow of the fluid 34 shown, with a top view of the 3rd from top to bottom. The fluid 34 needed to pass through the filter membrane 38 to flow, no other drive means.

The fluid 34 that in the filter unit 15 is fed in, flows through the filter membrane 35 in the drain socket 29 , and is thereby of dirt particles 16 exempted. In the closed state of the filter frame 13 the fluid flows 34 through the first filter area 41 . The at least one second filter area 43 is not flowed through. The dirt particles 16 thus only lie in the first filter area 41 on the filter surface 36 from, the at least one second filter area 43 free of dirt particles 16 remains.

An at least partially closed state of the filter frame 13 is in 5 shown. In the partially closed state lies due to the at least one extendable element 27th the sealing element 23 the surrounding wall 17th still on the first level 33 of the drain connector 29 on. The sealing element 25th of the separating element 19th that at the front 21st of the separating element 19th is arranged, however, is from the filter membrane 35 and the second stage 39 spaced.

The fluid 34 that in the closed state of the filter frame 13 mostly the first filter area 41 flows through, now flows through a gap 45 when the filter frame is lifted slightly 13 in the direction of the arrow C. , against the direction of flow of the fluid 34 , between the sealing element 25th and the second stage 39 arises. The fluid 34 can now in the second filter area 43 flow and the filter membrane 35 pass and then in the drain pipe 29 flow in.

Lifting the filter frame 13 is necessary when the filter unit 15 needs to be cleaned. This is the case if the first filter area 41 already so many dirt particles 16 have accumulated that a flow through the first filter area 41 is almost impossible or has become impossible. The specialist speaks here of constipation. The blockage can occur after only a few cleaning and / or drying processes or after a cleaning and / or drying process.

Lifting the filter frame 13 takes place when the pump unit is switched off 53 , so that it is in the filter unit 15 just a so-called residual fluid 34 located. Residual fluid 34 is the fluid 34 that when the pump unit is switched off 53 in the filter unit 15 and is no longer out of the filter unit 15 can drain off. By lifting the filter frame 13 , the residual fluid flows 34 in the at least one second filter area 43 and flows through the filter membrane there 35 and then gets into the drain pipe 29 . By flowing through the at least one second filter area 43 ensures that the residual fluid 34 , although for example the first filter area 41 is clogged from the filter container 44 can flow out without coming into contact with the user.

If the first filter area is clogged 41 , this must be cleaned manually by a user in order to restore the optimal filter performance of the filter unit 15 to reach. The user can receive information and / or a signal from the water-carrying household appliance 1 on the washing machine display unit 7 are displayed when cleaning the filter unit 15 necessary is. However, it is also conceivable for information and / or a message to be transmitted to another displayable medium, for example a smartphone. It would also be conceivable for a voice message to be transmitted. However, other information transmission systems are also conceivable.

In 6 is an open state of the filter frame 13 shown. The sealing element is in the open state 23 the surrounding wall 17th and the sealing element 25th of the separating element 19th from the filter surface 36 the filter membrane 35 spaced. The filter frame 13 can completely from the filter unit 15 can be removed so that a user directly on the entire filter surface 36 can access and clean them. The filter membrane can now preferably also be used 35 the filter unit 15 be removed for cleaning purposes or for exchange.

In the 7a to 7c are different, conceivable variants of the separating element 19th shown. Except for another design and arrangement of the separating element 19th is the structure of the filter frame 13 identical to the embodiment already described above.

In the 7a . is the separator 19th than one in the filter frame 13 all-round, ring-shaped separating element 19th educated. At the front 21st of the separating element 19th is the all-round sealing element 25th educated. The at least one second filter area 43 is in the closed state of the filter frame 13 circumferential of the separating element 19th surround. The first filter area 41 extends between the separator 19th and the surrounding wall 17th of the filter frame 13 . The ring-shaped separator 19th can be anywhere within the surrounding wall 17th be arranged. It must be ensured that the fluid 34 in the closed state of the filter unit 15 only the first filter area 41 flows through and the second filter area 43 , in 7a only one shown, sealing to the first filter area 41 is trained. Either the filter membrane faces 35 such a voltage that the separator 19th sealing on the filter membrane 35 can rest or the partition 37 of the drain connector 29 with the second parking level 39 is the separating element 17th arranged opposite, so that the separating element 17th can rest there.

The separator 19th can also, as in 7b shown as a stamp-shaped separating element 19th be trained. The face 21st of the separating element 19th is preferably designed as a flat surface and includes the sealing element 25th . The sealing element 25th is in this embodiment over the entire end face 21st of the separating element 17th educated. But one would also be conceivable as in 7a described shape of the sealing element 25th . The at least one second filter area 43 is in the closed state of the separating element in this embodiment 19th covered.

It is also conceivable that in 7a described separating element 19th several times on the filter frame 13 is trained. In 7c are, for example, four such separating elements 19th shown. But it is also conceivable that fewer than four separating elements 19th or more than four separators 19th are trained. The advantage of multiple dividers 19th is that several clean second filter areas 43 are present through which the residual fluid 34 when moving the filter frame 13 can flow from the closed state to the at least partially closed state. A faster drain of the residual fluid 34 is achieved. However, the first filter area should be 41 should not be reduced too much, as this will reduce the filter performance when the filter unit is closed 15 is reduced.

The mode of operation of the object according to the invention in a water-carrying household appliance is briefly described below 1 are explained.

This is in 8th schematically shows a circulation principle of a water-bearing household appliance shown in a highly simplified representation 1 shown. The water-bearing household appliance 1 has a recording area 47 for objects to be cleaned and / or dried, such as laundry or dishes. Fluid is present during a cleaning and / or drying process 34 in the receptacle 47 . In a pumping and / or pumping process, the fluid 34 by means of the pump unit 53 through an outlet opening 49 from the receptacle 47 into a pumping or pumping line 51 pumped.

The pump unit 53 is powered by a drive unit 55 driven, the drive unit 55 from a control unit 57 is driven or controlled. The drive unit 55 is with the control unit 57 via a transmission element 59 coupled. The pump unit 53 pumps the fluid 34 to the filter container 44 the filter unit 15 in which the fluid 34 is filtered. After the filter unit 15 the fluid flows 34 either in a drain 61 and leaves the water-bearing household appliance 1 from or via a return line 51a to an inlet opening 63 that the fluid 34 back to the recording area 47 of the water-bearing household appliance 1 leads. It is also conceivable that the fluid 34 , for example in a washing machine, via the induction bowl 5 is performed and mixed there, for example with detergent and / or fabric softener.

The fluid 34 is from the pump unit 53 through an opening 65 into the filter unit 15 pumped. The filter frame 13 is in the closed state so that the fluid 34 only one of the two filter areas 41 , 43 flows through. In the present exemplary embodiment, the fluid flows through 34 the first filter area 41 while the second filter area 43 through the separating element 19th from the first filter area 41 is separated. Now suggests that the first filter area 41 for further flowing fluid 34 has become impermeable, this can be signaled to the user as already described above. A cleaning of the filter unit 15 is now required. To do this, the filter frame 13 from the filter container 44 the filter unit 15 be removed so that the user on the filter membrane 35 access or remove them for cleaning.

First, the pumping unit 53 stopped so no more fluid 34 into the filter unit 15 is pumped. Because there is a heavily soiled filter unit 15 Residual fluid 34 , Fluid 34 due to the blockage of the first filter area 41 the filter membrane 35 cannot penetrate in the first filter area 41 accumulates, this residual fluid must 34 when opening the filter unit 15 drain first so that the user does not have to come into contact with it. The user now releases the filter frame 13 from the closed state and moves the filter frame 13 in the partially closed state. The separating element 19th such from the filter membrane 35 and the second shelf 39 spaced that the gap 45 between the sealing element 25th of the separating element 19th and the filter membrane 35 forms. The surrounding wall 17th with the at least one extendable element 27th remains with the first shutdown level 33 in contact such that an escape of the residual fluid 34 from the filter unit 15 is avoided.

Through the gap 45 the residual fluid flows 34 in the at least one second filter area 43 and flows through the filter membrane there 35 , so that in the filter unit 15 only the dirt particles 16 on the filter membrane 35 stay behind. By moving the filter frame further from the partially closed state to the open state, the circumferential wall becomes 17th from the first shelf 33 spaced. Ideally, the filter frame 13 from the filter unit 15 can be solved so that the user can conveniently touch the filter membrane to be cleaned 35 can reach. It is also conceivable that the filter membrane 35 the filter unit 15 is designed to be removable so that a user removes the dirt particles 16 just wipe it off and dispose of it properly. For example, the user can easily access the filter unit 15 get in the cleaning hatch cover 11 Will get removed. However, other types of access are also conceivable, such as via the induction bowl 5 .

Reference symbol list

1

Water-bearing household appliance

3rd

Washing machine front wall

5

Induction bowl

7

Washing machine display unit

9

Washing machine door

11

Cleaning hatch cover

13

Filter frame

15

Filter unit

16

Dirt particles

17th

All-round wall

19th

Separating element

21st

Face

23

Sealing element surrounding wall

25th

Sealing element separating element

27th

at least one renewable element

29

Drain connector

31

Wall element

33

1st parking level

34

Fluid

35

Filter membrane

36

Filter surface

37

partition wall

39

2nd parking level

41

1. Filter area

43

2. Filter area

44

Filter container

45

gap

46

opening

47

Recording area

49

Outlet opening

51

Pumping or pumping line

51a

Return line

53

Pump unit

55

Drive unit

57

Control unit

59

Delivery element

61

Outflow

63

Inlet opening

A

Flow direction

B

Cross-section of drain socket

C.

Contrary to the flow direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 201720725 A1 [0004]
• WO 2013068300 A1 [0005]

Claims (14)

Water-conducting household appliance (1), with a pump unit (53) for pumping around and / or pumping out the fluid (34) present during a cleaning and / or drying process, a drive unit (55) for essentially driving the pump unit (53), a control unit (57) for controlling the drive unit (55), a filter unit (15) for filtering the fluid (34), characterized in that the filter unit (15) has a filter surface (36) through which a first filter area (41) can flow of the fluid (34) and at least one second filter area (43) for flowing through the fluid (34), a movable separating element (19) being arranged between the first filter area (41) and the at least one second filter area (43), so that in When the filter unit (15) is closed, the fluid (34) essentially only flows through one of the two filter areas (41, 43). Water-carrying household appliance (1) Claim 1 , characterized in that a filter container (44) is provided on the inflow side, which has at least one opening (46) through which the fluid (34) flows into the filter container (44), and on the filter container (44) in the flow direction (A) a filter frame (13) and the filter surface (36), which can be flowed through at least partially, are arranged, the separating element (19) being arranged on the filter frame (13). Water-carrying household appliance (1) Claim 1 or 2nd , characterized in that the filter frame (13) has a circumferential wall (17), the separating element (19) being arranged within the circumferential wall (17) and in that the circumferential wall (17) and the separating element (19) are each on one The end face (21) facing the filter surface (36) has sealing elements (23, 25) and the sealing elements (23, 25) of the surrounding wall (17) and the separating element (19) rest on the filter surface (36) in the closed state. Water-conducting household appliance (1) according to one of the preceding claims, characterized in that the filter frame (13) can be arranged in the closed state, in a partially closed state and in an open state, the sealing element (23) of the circumferential in the closed state The wall (17) and the sealing element (25) of the separating element (19) lie against the filter surface (36) and, in the partially closed state, the sealing element (23) of the circumferential wall (17) lies against the filter surface (36) and the sealing element (25) of the separating element (19) is essentially spaced from the filter surface (36) and, in the open state, the sealing element (23) of the circumferential wall (17) and the sealing element (25) of the separating element (19) from the filter surface ( 36) are spaced. Water-conducting household appliance (1) according to one of the preceding claims, characterized in that the circumferential wall (17) of the filter frame (13) has at least one extendable element (27). Water-conducting household appliance (1) according to one of the preceding claims, characterized in that the at least one extendable element (27) of the peripheral wall (17) of the filter frame (13) has elastic elements. Water-bearing household appliance (1) according to one of the Claims 1 to 5 , characterized in that the at least one extensible element (27) of the peripheral wall (17) of the filter frame (13) is movably mounted. Water-conducting household appliance (1) according to one of the preceding claims, characterized in that the first filter area (41) is larger than the at least one second filter area (43). Water-conducting household appliance (1) according to one of the preceding claims, characterized in that in the closed state of the filter frame (13) the first filter area (41) is flowed through by the fluid (34) and predominantly in the partially closed state of the filter frame (13) the second filter area (43) has the fluid (34) flowing through it. Water-conducting household appliance (1) according to one of the preceding claims, characterized in that the filter frame (13) and / or the filter surface (36) of the filter container (44) are designed to be removable. Water-conducting household appliance (1) according to one of the preceding claims, characterized in that the filter surface (36) comprises a plurality of individual second filter areas (43), the plurality of individual second filter areas (43) each being designed to form a seal towards the first filter area (41). Water-conducting household appliance (1) according to one of the preceding claims, characterized in that the separating element (19) is designed in the form of a stamp and the end face (21) of the separating element (19) lies flat on the filter surface (36) in the closed state. Method for filtering fluids (34) in a water-bearing household appliance (1), with a pump unit (53) for pumping around and / or pumping out the fluid (34) present during a cleaning and / or drying process, a drive unit (55) for im Mainly driving the pump unit (53), a control unit (57) for controlling the drive unit (55), a filter unit (15) for filtering the fluid (34), characterized in that the filter unit (15) has a filter surface (36) through which it can flow which has a first filter area (41) through which the fluid (34) flows and at least a second filter area (43) through which the fluid (34) at least partially flows, between the first filter area (41) and a movable separating element (19) is arranged in the at least one second filter area (43) such that in a closed state of the filter frame (13) the fluid (34) essentially only one of the two filter areas e (41, 43) flows through. Procedure according to Claim 14 , characterized in that the filter unit (15) has a filter frame (13) and the filter surface (36), the separating element (19) and a circumferential wall (17) being arranged on the filter frame (13), each with sealing elements (23 , 25) are provided on an end face (21) of the separating element (19) and on the circumferential wall (17), and the filter frame (13) in the closed state, by moving into a partially closed state and by further moving into an open one Movable state, wherein the sealing element (23) of the circumferential wall (17) and the sealing element (25) of the separating element (19) bear against the filter surface (36) in the closed state and by moving the filter frame (13) in the partially closed state, the sealing element (23) of the peripheral wall (17) bears against the filter surface (36) and the sealing element (25) of the separating element (19) is essentially spaced from the filter surface (36) and wherein the sealing element (23) of the circumferential wall (17) and the sealing element (25) of the separating element (19) are spaced apart from the filter surface (36) by moving the filter frame (13) into the open state.

Images