Filter device for filter system of laundry treatment appliance and filter system

Abstract

The invention relates to a filter device for a filter system of a laundry treatment appliance, comprising a filter receptacle and at least one filter element which can be releasably placed on the filter receptacle in an installed position and is used for filtering a liquid. The filter receptacle has at least one channel through which liquid can be exchanged with the filter element correspondingly when the filter element is placed in the mounted position. According to the invention, the liquid exchange between the channels and the filter elements takes place by means of respective intermediate valves, which are each non-separably fastened to the filter receptacles. When the filter element is placed in the installed position, the respective valves each assume a first switching state in which a flow of liquid through the respective valve can be effected, and when the filter element is removed from the installed position, the respective valves automatically assume a second switching state in which the respective valves can be effected through the respective valves. And a second switching state in which the flow of liquid through the respective valve is inhibited.

Description

Technical Field

[0001] The present invention relates to a filter device for a filter system of a laundry processing appliance, comprising a filter receiving portion and at least one filter element, wherein the filter element can be releasably placed on the filter receiving portion in an installation position and is used to filter liquid, wherein the filter receiving portion has at least one channel, and when the at least one filter element is placed in the installation position, liquid can be exchanged with the at least one filter element through the channel. In addition, the present invention also relates to a filter system with the above-mentioned filter device. Background Art

[0002] As microplastics are increasingly causing environmental pollution, various measures are being taken to reduce or avoid the generation of microplastics. In the field of modern laundry processing appliances, filter systems are usually provided for this purpose, by which microplastics can be separated from the pumped process liquid in the corresponding laundry processing appliance. This can reduce microplastic contamination in wastewater when washing synthetic clothes.

[0003] EP 3839128 A1 discloses a washing machine with an appliance housing and a process liquid system for conducting a washing machine process liquid in the form of water or washing lye. In addition, a filter system with a filter device is provided in the process liquid system, which is integrated in the flushing tray of the washing machine and is arranged in the process liquid system for filtering synthetic fibers from the process liquid conducted through the filter device. In this case, a filter element in the form of an activated carbon filter is provided in the filter device, which filter element is arranged on a filter receptacle of the filter device and can also be removed from the installation position. The filter receptacle is formed by the filter housing of the filter device. Summary of the invention

[0004] Starting from the above-mentioned prior art, the present invention is now based on the object of providing a filter device for a filter system of a laundry treatment appliance, in which the correct use of at least one filter element is permanently ensured.

[0005] The above object is achieved by the preferred technical solution of the present invention. The optional technical solution provides an advantageous development of the present invention. The present invention also relates to a filter system, in which the filter device of the present invention is used.

[0006] According to the invention, the filter device comprises a filter receptacle and at least one filter element, which can be releasably placed on the filter receptacle in an installed position and is used to filter a liquid. The filter receptacle has at least one channel, through which liquid can be exchanged with the at least one filter element when the at least one filter element is placed in the installed position.

[0007] The filter device of the present invention is used for filtering liquids, wherein the filter device is preferably used in a filter system of a laundry processing device, wherein the laundry processing device is in particular a washing machine or a washer-dryer. In particular, the filter device is arranged inside a filter system in a discharge system of the laundry processing device, through which liquid can be discharged from the laundry processing device. Here, the liquid to be filtered is a process liquid of the laundry processing device, preferably water or washing lye. Particularly preferably, the filter device of the present invention is designed to separate synthetic particles or fibers from a liquid, wherein the particles or fibers are in particular microplastics.

[0008] The filter device has a filter receptacle on which at least one filter element can be received in the installed position, wherein the reception is performed in a releasable manner, that is, the at least one filter element can also be removed from the filter receptacle from the installed position in order to be able to replace or clean the at least one filter element, for example. Within the scope of the invention, the filter receptacle can be formed by a filter housing in which the at least one filter element can be received and positioned in the installed position in the interior of the filter housing.

[0009] Furthermore, the filter receiving part has at least one channel, through which liquid can be exchanged with the at least one filter element when the at least one filter element is placed on the filter receiving part in the installation position. The at least one channel is in particular an opening, through which liquid can be exchanged with the at least one filter element received on the filter receiving part. In particular, the at least one channel can be a supply part, through which the liquid to be filtered can be guided to the at least one filter element, or the at least one channel can be a discharge part, which is used to discharge the filtered liquid from the at least one filter element.

[0010] The filter device comprises at least one filter element for filtering a liquid, wherein one or more filter elements can be provided, each of which is placed in a relevant mounting position on the filter receiving part in order to exchange liquid with the filter receiving part. In particular, a plurality of filter elements can be connected in series one after the other. However, it is particularly preferred that the filter device has only one filter element, which can be releasably arranged on the filter receiving part. Specifically, the at least one filter element can be designed as a filter cartridge. In particular, the at least one filter element can also be designed as a microfilter, by which microparticles or microfibers, in particular microplastics, can be separated from the liquid to be filtered.

[0011] The invention now includes the following technical teaching: The corresponding exchange of liquids between at least one channel and at least one filter element is carried out via a corresponding intermediate valve, which is each inseparably fastened to the filter receiving part. When at least one filter element is placed in the installation position, the corresponding valve is in a corresponding first switching state, in which the flow of liquid through the corresponding valve can be achieved. However, when at least one filter element is removed from the installation position, the corresponding valve automatically enters a corresponding second switching state, in which the flow of liquid through the corresponding valve is prohibited.

[0012] In other words, in the installation position of the at least one filter element, a liquid can be transferred between the at least one channel of the filter receiving part and the at least one filter element through a corresponding valve, which is placed between the at least one channel and the at least one filter element and is non-releasably connected to the filter receiving part. The corresponding valve can be switched between a corresponding first switching state and a corresponding second switching state, wherein when the at least one filter element is placed in the installation position on the filter receiving part, a corresponding first switching state is set in the corresponding valve. Here, in the corresponding first switching state of the corresponding valve, liquid can flow through the corresponding valve, thereby exchanging liquid between the at least one channel and the at least one filter element in the installation position. On the contrary, if the at least one filter element is removed from the installation position, the corresponding valve automatically enters the corresponding second switching state, in which the liquid cannot flow through the corresponding valve.

[0013] The advantage of this filter device design is that when the at least one filter element is removed from the installation position, or when the at least one filter element is improperly arranged and deviates from the correct installation position, liquid will not flow through the filter device because the corresponding valve will automatically enter its second switching state. Thus, the correct use of the filter device is forced to be ensured in the form of the at least one filter element being correctly placed in the installation position. Therefore, when the filter device is used in the filter system of a clothing treatment device and in the discharge system of the clothing treatment device, since the valve of the filter device is in the second switching state and cannot be pumped out, errors may occur when pumping out the treatment liquid. In addition, when the alkali liquid container is filled with water and clothes, the clothes placed in the clothing treatment device cannot be taken out because the water level is too high. In this way, the operator of the clothing treatment device can notice that the at least one filter element is mistakenly placed in the installation position. In addition, this can also be achieved with very low consumption.

[0014] However, within the framework of the present invention, an additional check of the correct position of the at least one filter element can also be carried out by means of sensors and / or switches. Alternatively or additionally, it is also conceivable to determine within the framework of a check cycle whether the at least one filter element is missing or improperly placed. For example, a certain amount (a small amount) of water can be directed through the filter device in order to check whether the corresponding valve is open or closed, i.e. whether the at least one filter element is correctly placed in the installation position. For this purpose, when the filter device is used in a filter system of a laundry treatment device, a corresponding amount of water can be introduced and pumped out in a targeted manner, or there is still an amount of water that needs to be pumped out during the previous laundry treatment process.

[0015] In the context of the present invention, "non-detachable" is understood to mean that the corresponding fixing cannot be separated without the use of tools or force, i.e. generally cannot be separated reversibly. In contrast, the releasable placement of at least one filter element on the filter receptacle is a detachable connection, i.e. can be separated reversibly if necessary.

[0016] Furthermore, during the placement of the at least one filter element in the installation position on the filter receptacle, a sealing connection is formed, in particular between the at least one channel and the at least one filter element, in order to prevent leakage of liquid at the transition between the corresponding valve and the at least one filter element when the at least one filter element is placed in the installation position. For this purpose, in particular at least one sealing element is provided, which is arranged on the side of the corresponding valve and / or on the side of the at least one filter element and provides a seal when the at least one filter element is placed in the installation position. For example, the at least one sealing element can be designed as an O-ring.

[0017] Furthermore, during the placement of the at least one filter element in the installation position, a releasable fixation is preferably formed between the at least one filter element and the corresponding intermediate valve, i.e. the corresponding valve and the at least one filter element are releasably fixed together. In this case, this releasable connection is achieved in particular by axially fixing the corresponding valve on the at least one filter element, wherein the axial fixing is preferably achieved by means of a thread, magnetism, a clamp, increased friction (e.g. by means of a rubber ring / rubber eyelet), a bayonet lock or an additional connecting element (e.g. a screw, a clamp, a tensioning element, etc.).

[0018] In the sense of the invention, the corresponding valve "automatically" enters the second switching state when the at least one filter element is removed from the installation position, which means that the corresponding valve switches to the second switching state by itself during the separation process, i.e., it does not have to be actively controlled or regulated and the corresponding actuators can switch to the second switching state. In particular, the corresponding valve is preloaded into its second switching state, wherein the preload is overcome when the at least one filter element is placed in the installation position. Particularly preferably, the preload into the second switching state is achieved by a spring element.

[0019] According to one embodiment of the present invention, the corresponding valve is equipped with a corresponding trigger element, which is arranged on the at least one filter element. When the at least one filter element is placed in the installation position, the corresponding trigger element contacts the corresponding valve and transfers the corresponding valve from the corresponding second switching state to the corresponding first switching state. Thus, when the at least one filter element is placed in the installation position, the corresponding valve can be converted to the corresponding first switching state in a simple manner. In this case, the corresponding trigger element can act on the corresponding valve vertically or horizontally or at a certain angle. The corresponding trigger element is preferably composed of the at least one filter element itself or the parts fastened on the filter element, and is therefore particularly fixed (or static).

[0020] However, in addition to opening the corresponding valve in a purely mechanical manner by means of corresponding trigger elements, electronic switches and / or sensors can also be provided within the framework of the present invention in order to send a signal, for example to an operator and / or a laundry treatment appliance comprising a filter device, thereby indicating the correct or incorrect placement of the at least one filter element in the installation position.

[0021] Within the scope of the invention, the respective valve and the associated actuating element can each have a specific cross section or a specific contour, so that the respective valve can only be used with a correspondingly designed counterpart in the form of the associated actuating element, and vice versa.

[0022] In an extension of the above-mentioned embodiment, the corresponding valve has a corresponding valve body, which can move between a corresponding first position assigned to the corresponding first switching state and a corresponding second position assigned to the corresponding second switching state. In the second position, the corresponding valve body prohibits the flow of liquid through the corresponding valve, while in the first position of the corresponding valve body, the liquid can flow through the corresponding valve. Thus, a suitable design of the corresponding valve is achieved. Here, the positioning of the corresponding valve body in the second position can be achieved or supported by a spring element or a magnet, which holds the corresponding valve body in the second position. Particularly preferably, in the second position, the corresponding valve body rests on the corresponding associated valve seat, thereby prohibiting the flow of liquid through the corresponding valve. In the corresponding first position, the corresponding valve body moves out from the corresponding associated valve seat, so that the liquid can flow through the corresponding valve.

[0023] Preferably, the respective valve body is movable in the flow direction of the liquid conducted through the respective valve between a respective first position and a respective second position. This enables a compact design of the respective valve.

[0024] Alternatively, the respective first position of the respective valve body is laterally offset from the respective second position with respect to the flow direction of the liquid guided through the respective valve. Thus, a valve can be realized which is insensitive to contaminants (such as fluff) present in the liquid, since the lateral positioning of the valve body in the first position results in only a small amount of contaminants adhering to the valve body when the liquid flows through the respective valve.

[0025] Further alternatively, the corresponding valve body is a corresponding valve slide, which can be moved between a corresponding first position and a corresponding second position transversely to the flow direction of the process liquid guided by the at least one valve. Here, a reliable closure in the corresponding second position can be achieved by the valve slide.

[0026] An alternative development of this embodiment is that the corresponding valve has a corresponding valve body, which is penetrated by a corresponding through-hole, wherein the corresponding valve body can be twisted between a corresponding first position assigned to the corresponding first switching state and a corresponding second position assigned to the corresponding second switching state. In the corresponding second position, the corresponding valve body separates the inlet and outlet of the corresponding valve from each other, thereby prohibiting the flow of liquid through the corresponding valve, whereas the corresponding through-hole of the corresponding valve body coincides with the inlet and the outlet in the corresponding first position, thereby indicating that the liquid can flow through the corresponding valve.

[0027] Alternatively, the corresponding valve has a corresponding valve piston, which can be moved between a corresponding first position assigned to a corresponding first switching state and a corresponding second position assigned to a corresponding second switching state, wherein the corresponding valve piston presses on a corresponding elastic element of the corresponding valve in the corresponding second position, thereby causing the elastic element to deform elastically. The corresponding elastic element separates the inlet and outlet of the corresponding valve from each other in the deformed state, thereby prohibiting the flow of liquid through the corresponding valve, and on the contrary, in the undeformed state of the corresponding elastic element, the inlet and the outlet are connected to each other, thereby indicating that the liquid can flow through the corresponding valve. In this way, a so-called pinch valve or pinch valve (pinch value) can be realized. The pinched state of the elastic element can be realized directly in a mechanical way, or it can also be realized with the help of a medium (such as a fluid).

[0028] According to a possible design of the present invention, the at least one channel is a corresponding input part, through which the liquid to be filtered can be supplied to the at least one filter element through a corresponding intermediate valve. Alternatively or additionally, the at least one channel is a corresponding outlet part, through which the liquid filtered by the at least one filter element can be discharged through a corresponding intermediate valve.

[0029] In a variant of the invention, the two aforementioned designs are combined with one another so that a corresponding valve is inseparably fixed to the filter receiving part both at the corresponding inlet and at the corresponding outlet. In addition, preferably two further valves are provided on the at least one filter element side, which are arranged at the connection points of the at least one filter element, to which the at least one filter element is connected in the installation position with the inlet and with the outlet, respectively. This reliably prevents liquid from flowing out when the at least one filter element is removed.

[0030] The filter device according to the invention is in particular part of a filter system of a laundry treatment appliance, wherein the filter device is arranged in a drainage system through which process liquid can be discharged from the laundry treatment appliance. Advantageously, therefore, filtering of the process liquid to be discharged from the laundry treatment appliance can be achieved by means of the filter device, wherein correct use of the at least one filter element of the filter device is ensured.

[0031] In an extension of the invention, the filter device is received in the appliance housing of the laundry treatment appliance, wherein the filter device can be received on or in the flushing tray of the laundry treatment appliance. Alternatively, the filter device can be arranged outside the appliance housing of the laundry treatment appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] An advantageous embodiment of the invention is shown in the accompanying drawings and will be described below.

[0033] Figure 1 A schematic diagram showing a clothes treating appliance with a filter system according to a first embodiment of the present invention;

[0034] Figures 2 to 4 Show Figure 1 Different views of the filter system in the filter unit area;

[0035] Figure 5 A schematic diagram showing a laundry treatment appliance with a filter system according to a second embodiment of the present invention; and

[0036] Figures 6 to 11 Shown in Figure 1 or Figure 5 Schematic diagram of other possible designs of filter devices used in the filter system of a laundry treatment appliance. DETAILED DESCRIPTION

[0037] Figure 1 A schematic diagram of a laundry treatment device 1 is shown, which in this case is a washing machine or a washer-dryer. The laundry treatment device 1 comprises an appliance housing 2, in which a drum 3 is rotatably mounted. In the laundry treatment device 1, the drum 3 is used to receive the laundry pieces to be treated, wherein a treatment liquid can be input into the drum 3 via an input line 4 to treat the laundry pieces placed in the drum 3. For this purpose, a connection between the drum 3 and a flushing tray 5 is established via the input line 4, in which a detergent or a washing aid can be added to the supplied water before the process liquid is input into the drum 3 via the input line 4. Therefore, the process liquid provided to the drum 3 can be, in particular, a washing lye solution in addition to water.

[0038] At the end of the process step or laundry treatment, the process liquid can be discharged from the drum 3, wherein the discharge is carried out here via a discharge line 6, in that the process liquid is pumped out of the drum 4 by a pump 7 and conveyed into the discharge line 6. The discharge line 6 is used here to convey the pumped process liquid to a filter system 8, in which the pumped process liquid can first be filtered and then conveyed to a wastewater connection 9 of a wastewater system.

[0039] The filter system 8 is designed according to the first embodiment of the present invention and includes a filter device 10, which is integrated in the appliance housing 2 of the laundry treatment appliance 1. For this purpose, the appliance housing 2 forms a filter housing 11 in the area of ​​the flushing plate 5, which is used to receive the filter element 12. Here, the filter housing 11 has a filter receiving portion 13, on which the filter element 12 can be releasably placed in the installation position. In addition, the filter housing 11 also has a supply portion 14, through which the process liquid to be filtered can be supplied from the discharge line 6 to the filter element 12. In addition, the filter housing 11 is also provided with a lead-out portion 15, through which the process liquid filtered by the filter element 12 can be led out from the filter housing 11. The lead-out portion 15 is composed of a discharge interface 16 of the appliance housing 2. Here, a discharge hose 17 is connected to the discharge interface 16, and the filtered process liquid is supplied to the wastewater interface 9 through the discharge hose.

[0040] The filter element 12 of the filter device 10 is a microfilter in this example, by which microparticles and in particular microplastics can be separated from the supplied process liquid. In addition, the filter element 12 is also designed as a filter cartridge, which can be removed from the installation position on the filter receiving part 13, for example, to clean the filter element 12 or replace the filter element 12, and can be put back into the installation position on the filter receiving part 13 after cleaning or replacement.

[0041] Now, Figure 2 The filter device 10 is shown in more detail, with the filter element 12 placed in the installation position on the filter receptacle 13. As can be seen from the figure, the process liquid to be filtered flows to the filter element 12 via an intermediate valve 18, which is fixed inseparably to the filter receptacle 13 and thus to the supply 14 side. The valve 18 comprises a plug-shaped valve body 19, which can be moved between different positions in a valve housing 21 along the flow direction 20 of the process liquid. The valve housing 21 is formed by the filter receptacle 13. The valve body 19 is prestressed by a spring element 22 in the direction of a valve seat 23, which is defined on the valve housing 21.

[0042] Furthermore, a triggering element 24 is formed on the filter element 12 side, which is designed similar to a pin and here protrudes axially relative to the rest of the filter element 12. Figure 3(left side: sectional view of filter element 12, right side: end view of filter element 12) It can be seen that the trigger element 24 is located in the inlet opening 25 of the filter element 12 designed as a filter cartridge and is connected to the rest of the filter element 12 via radially extending webs 26. In addition, a sealing element 27 in the form of an O-ring is also arranged on the filter element 12 in the mouth area of ​​the inlet opening 25, wherein the filter element 12 also forms an axially protruding circumferential flange 28, which can be clamped to the valve housing 21 for releasable fastening when the filter element 12 is placed in the installation position. In this case, this releasable fastening can be achieved by threads, magnets, clamping, increased friction (such as by rubber rings / rubber grommets), bayonet locks or additional connecting elements (such as screws, clamps, tensioning elements, etc.).

[0043] Figure 2 The filter element 12 is shown in the installed position on the filter receiving portion 13. Here, it can be seen from the figure that the valve body 19 of the valve 18 is moved to the position by the trigger element 24. Figure 2 In the first position shown in FIG. 1 , the first switching state of the valve 18 is realized. In the first position and in the first switching state of the valve 18, the valve body 19 is lifted axially from the valve seat 23, thereby releasing the outlet 29 through the valve body 19, which is formed on the end side of the filter receptacle 13 and extends radially inwards to the valve seat 23. This allows the process liquid to flow through the valve 18, so that the process liquid can flow from the supply 14 through the valve 18 into the inlet opening 25 and thus into the filter element 12. This is Figure 2 Indicated by arrow 30.

[0044] If, on the other hand, the filter element 12 is removed from the installation position or is not correctly placed on the filter receptacle 13 in the installation position, the flow of the process liquid through the valve 18 is prohibited. Figure 4 This state is shown in Figure 4 The second position of the valve body 19 and the second switching position of the valve 18 associated therewith are shown. In this second position, the valve body 19 is pressed into the valve seat 23 by the spring element 22, wherein the outlet 29 is sealed toward the filter element 12 by a sealing element 31 received on the valve body 19. The sealing element 31 is an O-ring here. In this respect, the removal of the filter element 12 from the installed position results in the inability to discharge the process liquid through the supply 14, since the supply is closed at the end by the valve 18. In particular, this inability to discharge the process liquid from the drum 3 would be declared a fault by the laundry treatment appliance 1.

[0045] also, Figure 5A schematic diagram of a laundry treatment device 32 with a filter system 33 according to a second possible embodiment of the present invention is shown, wherein the filter system 33 and the laundry treatment device 32 correspond substantially to Figures 1 to 4 The difference is that the filter device 10 of the filter system 33 is now not integrated into the appliance housing 2 of the laundry treatment appliance 32, but is arranged outside the appliance housing 2. Therefore, the filter receptacle 13 of the filter device 10 is not formed by the appliance housing 2, but by a separate filter housing 34. In order to connect to the pump 7, the discharge line 35 extends partly inside the appliance housing 2 and partly outside the appliance housing 2, wherein the discharge line 35 is divided in particular in the area of ​​the discharge interface 36 on the appliance housing 2. In other respects, Figure 5 The design shown is similar to Figures 1 to 4 The variants shown are identical, so reference is made to the description there.

[0046] at last, Figures 6 to 11 Other variants of valves 37, 38, 39, 40, 41 and 42 and associated triggering elements 43, 44, 45, 46, 47 and 48 are shown, wherein each valve 37 or 38 or 39 or 40 or 41 or 42 together with the respectively associated triggering element 43 or 44 or 45 or 46 or 47 or 48 can be used instead Figures 1 to 5 Valve 18 and actuating element 24 in a variant.

[0047] For example, Figure 6 The valve 37 shown comprises a valve body 49 in the form of a valve ball, which is movably received in a valve housing 50. Figure 6 In the switching position shown in the left figure, the valve body 49 is in a position in which the valve body 49 rests on the valve seat 51. Here, the valve body 49 is pressed into the valve seat 51 under the influence of gravity and under the influence of the pressure of the inflowing process liquid when the process liquid flows into the valve housing 50 at the inlet 52 of the valve 37. The inlet 52 is connected to the supply 14. The valve body 49 ensures that the outlet 53 is closed, thereby preventing the process liquid from flowing through the valve 37. In addition, a sealing element 54 is provided on the valve seat 51, which additionally ensures a seal when the outlet 53 is closed by the valve body 49.

[0048] The associated trigger element 43 forms an inlet opening 55, through which the process liquid can flow to a filter element (not shown here) which is fixedly connected to the trigger element 43. Figure 6As can be seen in the right figure, the valve 37 can be switched to another switching position by axially inserting the trigger element 43 into the outlet 53 and thereby switching the valve body 49 from the valve seat 51 to another position via the bevel. Thus, in this other position, the process liquid can flow through the valve 37, wherein this other position is laterally offset from the position of the valve body 49 in the left figure with respect to the flow direction 56 of the process liquid. In addition, a sealing element 57 in the form of an O-ring is provided on the trigger element 43 side in order to achieve a corresponding seal when the process liquid flows into the inlet opening 55.

[0049] exist Figure 7 In the valve 38 shown, a spherical valve body 58 is rotatably guided in a valve housing 59, which has an inlet 60 and an outlet 61. The valve body 58 has a through-opening 62. If the valve body 58 in the valve housing 59 is rotated into a first position under the action of the trigger element 44, the first position realizes the first switching position of the valve 38 and Figure 7 As shown in the figure above, the through-hole 62 overlaps with the inlet 60 and the outlet 61, so that the process liquid can flow through the valve 38 to the input opening 63, which is designed on the filter element side (also not shown in this example). On the contrary, if there is no action of the trigger element 44, the valve body 58 automatically rotates in the valve housing 59 to the second position, which is the second switching position of the valve 38. In this second switching position, the through-hole 62 does not overlap with the inlet 60 and the outlet 61. Therefore, in the second switching position of the valve 38, the process liquid cannot flow through the valve 38.

[0050] Figure 8 The structure shown is Figure 7 The variant shown is similar, except that the spherical valve body 64 of the valve 39 shown can be pivotally moved between two positions in the surrounding valve housing 65. In the first position of the valve body 64 (the first position is Figure 8 4 and represents the first switching position of the valve 39), the through-opening 66 in the valve body 64 also overlaps with the inlet 67 and the outlet 68 of the valve body 65, so that the process liquid can flow through the valve 39. Here, the valve body 64 is deflected to the first position under the action of the associated trigger element 45, so that the process liquid flows from the outlet 68 into the input opening 69 of the filter element with the trigger element 43. Conversely, the valve body 64 is deflected to the second position without the action of the associated trigger element 45, which is in the second position. Figure 8 In the second position, which represents the second switching position of the valve 39 , the through-opening 66 no longer coincides with the inlet 67 and the outlet 68 , so that no process liquid can flow through the valve 39 any more.

[0051] on the contrary, Fig. 9The valve 40 shown has a valve piston 70 which is guided in a valve housing 71 so as to be movable transversely to a flow direction 72 of a process liquid which can be guided through the valve 40. The valve piston 70 is preloaded to a position 72 by a spring element 73. Fig. 9 4. In the position shown, the valve piston 70 presses on the elastic element 74, thereby deforming it elastically. This represents the switching position of the valve 40. In the deformed state of the elastic element, the elastic element 74 separates an inlet 75 from an outlet 76, which is formed by the valve housing 71 of the valve 40 and the inlet 75 is subsequently connected to a supply (not shown in this example). Thus, in the deformed state of the elastic element 74, a flow of process liquid through the valve 40 can be prevented.

[0052] The trigger element 46 assigned to the valve 40 is designed as an inclined slide and is inserted into the actuation opening 77 of the valve piston 70 when the filter element is placed in the installation position, so that the valve piston 70 is moved into a further position due to the tilting of the trigger element 46 against the spring element 73, in which the valve piston 70 no longer acts on the elastic element 74. Therefore, the elastic element 74 returns to the undeformed state in the further position of the valve piston 70, wherein the process liquid can flow between the inlet 75 and the outlet 76 and can then flow into the inlet opening 78 of the filter element 12. As a result, another switching position of the valve 40 is achieved.

[0053] In addition, Fig.10 In the valve 41 shown, a valve body in the form of a valve slide 79 is guided displaceably in a valve housing 80 of the valve 41, wherein this displaceable guidance takes place transversely to a flow direction 81 of a process liquid that can be guided through the valve 41. Fig.10 In the first position shown, the valve slide 79 is moved out of the valve seat 82 under the action of the trigger element 47, wherein the movement takes place here against the spring element 83. For this purpose, the trigger element 47 is designed as an inclined slide, which, when the filter element 12 is placed in the installation position, is inserted into the actuation opening 84 of the valve slide 79, so that the valve slide 79 is moved into the first position against the spring element 83 due to the inclination of the slide. In this way, a first switching position of the valve 41 is achieved, in which the process liquid can flow from the inlet 85 of the valve 41 to the outlet 86 and thus also into the inlet opening 87 of the filter element 12, at which the trigger element 47 is arranged. In this case, a connection to a supply (not shown here) of the filter device is established via the inlet 85.

[0054] If, on the other hand, the filter element 12 is removed from its installed position, the spring element 83 ensures that the valve slide 79 moves into the valve seat 82 and thus into the second position, which is also the second switching position of the valve 41. The valve slide 79 then separates the inlet 85 from the outlet 86, so that a flow of process liquid through the valve 41 is also prohibited.

[0055] at last, Fig.11 The valve 42 shown is designed to Fig.10 The variant shown is similar, except that the valve slide 88 of the valve 42 is moved by the trigger element 48 against the spring element 89 by inserting the trigger element 48 together with the filter element 12 from above from the filter receiving portion 13 side. As a result, the valve slide 88 is moved from a position (the position is Fig.11 The left figure shows and represents a switching position of the valve 42) to another position (the other position is Fig.11 4 and is assigned to another switching position of the valve 42). In this other position, the valve slide 88 releases the outlet 90, so that the process liquid can flow from the outlet and thus from the supply connected to the outlet into the inlet opening 91 of the filter element 12. In addition, a guide device 92 is provided in the area of ​​the valve 42, on which the filter element 12 can be guided on both sides when it is placed in the installation position. The movement of the valve slide 88 takes place transversely to the flow direction 93 of the process liquid.

[0056] Therefore, by designing the filter system of a laundry treatment appliance according to the invention, a correct use of the filter device can be ensured in each case.

[0057] Reference numerals list

[0058] 1Clothing treatment appliances

[0059] 2Device housing

[0060] 3 rollers

[0061] 4 Input pipeline

[0062] 5 Rush into the plate

[0063] 6. Discharge pipeline

[0064] 7 Pumps

[0065] 8 filter system

[0066] 9 Wastewater interface

[0067] 10 Filter device

[0068] 11Filter housing

[0069] 12 Filter element

[0070] 13 Filter receiving part

[0071] 14 Supply Department

[0072] 15 Export

[0073] 16 Discharge port

[0074] 17 Discharge hose

[0075] 18 valve

[0076] 19 Valve body

[0077] 20 Flow direction

[0078] 21 valve housing

[0079] 22 Spring element

[0080] 23 Valve seat

[0081] 24 Trigger element

[0082] 25 Input opening

[0083] 26 Splice

[0084] 27 Sealing element

[0085] 28 Flange

[0086] 29 Exit

[0087] 30 Arrow

[0088] 31 Sealing element

[0089] 32 Clothes processing appliances

[0090] 33 Filter system

[0091] 34 Filter housing

[0092] 35 Discharge line

[0093] 36 Discharge port

[0094] 37 valve

[0095] 38 valve

[0096] 39 valve

[0097] 40 valve

[0098] 41 Valve

[0099] 42 valve

[0100] 43 Trigger element

[0101] 44 Trigger element

[0102] 45 Trigger element

[0103] 46 Trigger element

[0104] 47 Trigger element

[0105] 48 Trigger element

[0106] 49 Valve body

[0107] 50 valve housing

[0108] 51 Valve seat

[0109] 52 Entrance

[0110] 53 Exit

[0111] 54 Sealing element

[0112] 55 Input opening

[0113] 56 Flow direction

[0114] 57 Sealing element

[0115] 58 Valve body

[0116] 59 valve housing

[0117] 60 Entrance

[0118] 61 Exit

[0119] 62 hole

[0120] 63 Input opening

[0121] 64 Valve body

[0122] 65 valve housing

[0123] 66 hole

[0124] 67 Entrance

[0125] 68 Exit

[0126] 69 Input opening

[0127] 70 Valve piston

[0128] 71 valve housing

[0129] 72 Flow direction

[0130] 73 Spring element

[0131] 74 Elastic element

[0132] 75 Entrance

[0133] 76 Exit

[0134] 77 Manipulation opening

[0135] 78 Input opening

[0136] 79 Valve Slide

[0137] 80 valve housing

[0138] 81 Flow direction

[0139] 82 Valve seat

[0140] 83 Spring element

[0141] 84 Manipulation opening

[0142] 85 Entrance

[0143] 86 Exit

[0144] 87 Input opening

[0145] 88 Valve Slide

[0146] 89 Spring element

[0147] 90 Exit

[0148] 91 Input opening

[0149] 92 Guide device

[0150] 93 Flow direction.

Claims

1. A filter device (10) for a filter system (8; 33) of a laundry treatment appliance (1; 32), comprising a filter receiving portion (13) and at least one filter element (12), the filter element being releasably placed on the filter receiving portion (13) in an installed position and being used for filtering liquid, wherein the filter receiving portion (13) has at least one channel, through which liquid can be exchanged with the at least one filter element (12) when the at least one filter element (12) is placed in the installed position, characterized in that The corresponding liquid exchange between the at least one channel and the at least one filter element (12) is carried out through the corresponding intermediate valve (18; 37; 38; 39; 40; 41; 42), which are respectively inseparably fastened to the filter receiving part (13); when the at least one filter element (12) is placed in the installation position, the corresponding valve (18; 37; 38; 39; 40; 41; 42) occupies the corresponding first switching state, in which the flow of liquid through the corresponding valve (18; 37; 38; 39; 40; 41; 42) can be achieved; and when the at least one filter element (12) is removed from the installation position, the corresponding valve (18; 37; 38; 39; 40; 41; 42) automatically occupies the corresponding second switching state, in which the flow of liquid through the corresponding valve (18; 37; 38; 39; 40; 41; 42) is prohibited.

2. The filter device (10) according to claim 1, characterized in that A corresponding trigger element (24; 43; 44; 45; 46; 47; 48) is assigned to the corresponding valve (18; 37; 38; 39; 40; 41; 42), and the trigger element is arranged on the at least one filter element (12), wherein when the at least one filter element (12) is placed in the installation position, the corresponding trigger element (24; 43; 44; 45; 46; 47; 48) contacts the corresponding valve (18; 37; 38; 39; 40; 41; 42) and the corresponding valve (18; 37; 38; 39; 40; 41; 42) is switched from the corresponding second switching state to the corresponding first switching state.

3. The filter device (10) according to claim 1 or 2, characterized in that The corresponding valve (18; 37; 41; 42) has a corresponding valve body (19; 49), which can move between a corresponding first position configured for a corresponding first switching state and a corresponding second position configured for a corresponding second switching state, wherein the corresponding valve body (19; 49) prohibits the flow of liquid through the corresponding valve (18; 37; 41; 42) in the second position, while enabling the flow of liquid through the corresponding valve (18; 37; 41; 42) in the corresponding first position of the corresponding valve body (19; 49).

4. The filter device (10) according to claim 3, characterized in that The respective valve body (19) is movable between a respective first position and a respective second position in a flow direction (20) of a liquid conducted through the respective valve (18).

5. The filter device (10) according to claim 3, characterized in that With respect to a flow direction (56) of a process liquid conducted through the respective valve (37), the respective first position of the respective valve body (49) is laterally offset relative to the respective second position.

6. The filter device (10) according to claim 3, characterized in that The respective valve body is a respective valve slide (79; 88) which is movable transversely to the flow direction (81; 93) of the process liquid guided through the respective valve (41; 42) between a respective first position and a respective second position.

7. The filter device (10) according to claim 1 or 2, characterized in that The corresponding valve (38; 39) has a corresponding valve body (58; 64) which is penetrated by a corresponding through-opening (62; 66), wherein the corresponding valve body (58; 64) can be rotated between a corresponding first position assigned to a corresponding first switching state and a corresponding second position assigned to a corresponding second switching state, and wherein in the corresponding second position the corresponding valve body (58; 64) separates an inlet (60; 67) and an outlet (61; 68) of the corresponding valve (38; 39) from each other, thereby prohibiting a flow of liquid through the corresponding valve (38; 39), while in the corresponding first position the corresponding through-opening (62; 66) of the corresponding valve body (58; 64) overlaps with the inlet (60; 67) and the outlet (61; 68), thereby enabling a flow of liquid through the corresponding valve (38; 39).

8. The filter device (10) according to claim 1 or 2, characterized in that The corresponding valve (40) has a corresponding valve piston (70), which can move between a corresponding first position configured for a corresponding first switching state and a corresponding second position configured for a corresponding second switching state, wherein the corresponding valve piston (70) presses on the corresponding elastic element (74) of the corresponding valve (40) in the corresponding second position, and the elastic element is elastically deformed, wherein the corresponding elastic element (74) separates the inlet (75) and the outlet (76) of the corresponding valve (40) from each other in the deformed state, thereby prohibiting the flow of liquid through the corresponding valve (40), while the inlet (75) and the outlet (76) are connected to each other in the undeformed state of the corresponding elastic element (74), thereby enabling the flow of liquid through the corresponding valve (40).

9. The filter device (10) according to one of the preceding claims, characterized in that The at least one channel is a respective supply (14), via which the liquid to be filtered can be supplied to the at least one filter element (12) via a respective intermediate valve (18; 37; 38; 39; 40; 41; 42).

10. The filter device according to one of the preceding claims, characterized in that The at least one channel is a respective discharge through which the liquid filtered by the at least one filter element can be discharged via a respective intermediate valve.

11. The filter device according to claims 9 and 10, characterized in that Both at the respective supply and at the respective discharge, a respective valve is inseparably fastened to the filter receptacle.

12. A filter system (8; 33) of a laundry treatment appliance (1; 32), comprising a filter device (10) according to one or more of claims 1 to 11, wherein the filter device (10) is arranged in a discharge system through which process liquid can be discharged from the laundry treatment appliance (1; 32).

13. The filter system (8) according to claim 12, characterized in that The filter device (10) is received in an appliance housing (2) of the laundry treatment appliance (1).

14. The filter system according to claim 13, characterized in that The filter device is received on or in a flush-in tray of the laundry treatment appliance.

15. The filter system (33) according to claim 12, characterized in that The filter device (10) is arranged outside the appliance housing (2) of the laundry treatment appliance (32).

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