CN112746461B - Laundry care appliance with filter element - Google Patents
Laundry care appliance with filter element Download PDFInfo
- Publication number
- CN112746461B CN112746461B CN202011171559.2A CN202011171559A CN112746461B CN 112746461 B CN112746461 B CN 112746461B CN 202011171559 A CN202011171559 A CN 202011171559A CN 112746461 B CN112746461 B CN 112746461B
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- CN
- China
- Prior art keywords
- filter
- laundry care
- care appliance
- washing liquid
- cleaning element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004140 cleaning Methods 0.000 claims abstract description 127
- 238000005406 washing Methods 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims abstract description 75
- 239000012528 membrane Substances 0.000 claims abstract description 64
- 239000000356 contaminant Substances 0.000 claims abstract description 57
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 23
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/10—Filtering arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/20—Parameters relating to constructional components, e.g. door sensors
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
- D06F35/008—Methods for washing, rinsing or spin-drying for disinfecting the tub or the drum
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/54—Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
Abstract
The invention relates to a laundry care appliance having a filter element with a filter housing, which delimits a filter interior of the filter element at least in sections, the filter element having a filter membrane, which is arranged on the filter housing, the filter element having a filter inlet for supplying a washing liquid into the filter interior, the washing liquid flowing into the filter interior via the filter inlet being passed through the filter membrane for removing contaminants from the washing liquid. The filter element has a removable cleaning element which is arranged in the filter interior and rests on the filter membrane. The movable cleaning element moves in the movement direction within the filter interior, and contaminants accumulated on the filter membrane move in the movement direction on the filter membrane, the contaminants being at least partially removed from the filter membrane and pressed. The filter element has a receiving area to receive the pressed contaminant.
Description
Technical Field
The present invention relates to a laundry care appliance having a filter element.
Background
Some appliance variants of conventional laundry care appliances have flow-guiding lines, by means of which the washing liquid for the care of the laundry is guided. During operation of a conventional laundry care appliance, contaminants such as, for example, fluff, dirt or dust are received in the washing liquid and carried away by the washing liquid together via the guide line. In order to filter such contaminants from the washing liquid, certain appliance variants of conventional laundry care appliances have filter elements which are flowed through by the washing liquid in order to filter the washing liquid.
Because such filter elements may become clogged during operation of the laundry care appliance due to the increased accumulation of contaminants, such filter elements must be cleaned periodically.
A fiber filter for separating textile fibers from washing machine waste water is disclosed in DE 10 2016 004 326 A1.
In JP 2014 0686855 a laundry dryer with a filter is disclosed.
Disclosure of Invention
The object of the present invention is to provide a laundry care appliance having a filter element, in which a reduction in the effectiveness of the filter due to clogging can be prevented.
This object is achieved by the subject matter having the features according to the invention. Advantageous embodiments are the subject matter of the technical solutions, the description and the drawings of the invention.
According to one aspect, the object of the invention is achieved by a laundry care appliance having a filter element for filtering a washing liquid, wherein the filter element has a filter housing which delimits a filter interior of the filter element at least in sections, wherein the filter element has a filter membrane (Filtermembran) for filtering the washing liquid, which is arranged on the filter housing, wherein the filter element has a filter inlet for supplying the washing liquid into the filter interior, wherein the filter element is configured: directing a washing liquid flowing into the filter interior via the filter inlet through the filter membrane in order to remove contaminants in the washing liquid, wherein the filter element has a displaceable/movable (verlagerbar) cleaning element which is arranged in the filter interior and rests on the filter membrane, wherein the movable cleaning element is moved in the direction of movement inside the filter interior in order to move contaminants accumulating on the filter membrane in the direction of movement on the filter membrane in order to remove contaminants at least in sections from the filter membrane and in order to squeeze (komprimieren) the contaminants, and wherein the filter element has a receiving area which is configured to: the extruded contaminant is received.
The following technical advantages are achieved: the removable cleaning element of the filter element not only ensures an effective removal of contaminants from the filter membrane, but at the same time also enables: the pressed contaminants may advantageously be received in the receiving area of the filter element.
In this way, the filter membrane can be prevented from being clogged with contaminants during operation of the filter element, thereby preventing time-consuming and costly manual cleaning of the filter element or even replacement of the filter element.
In particular, an effective self-regulation of the cleaning action of the movable cleaning element can be ensured, whereby the tendency to clogging can be strongly reduced in comparison with conventionally used turbines, as disclosed for example in DE102016004326 A1.
The movable cleaning element is in particular movable in the filter interior in a movement direction extending in the axial direction from the filter inlet.
Alternatively, the movable cleaning element can also be configured in particular as a rotatable cleaning element which can be moved in particular along such a movement direction in the filter interior space: the direction of movement extends along an arc of a circle around the point of rotation of the rotatable cleaning element.
The invention thus provides a simple and effective filter element with automatically working movable cleaning elements which can be used advantageously in various fluid-technology lines of laundry care appliances, for example in flushing into a tray or in a lye container drain.
A laundry care appliance is understood to be an appliance used for the care of laundry, such as for example a washing machine or a laundry dryer. Such laundry care appliances are understood in particular as household laundry care appliances. I.e. laundry care appliances which are used under the framework of the household and by means of which household-use amounts of laundry are treated.
In an advantageous embodiment, the receiving area comprises an area of the filter interior space and/or the receiving area comprises an area of the removable cleaning element (in particular a recess in the removable cleaning element) and/or the receiving area comprises an area of the filter housing (in particular a contaminant trap in the filter housing).
The following technical advantages are achieved: by arranging the receiving area in the filter interior and/or in the filter housing and/or in the removable cleaning element, it can be ensured effectively that: the removable cleaning element removes and the squeezed contaminants from the filter membrane do not re-accumulate on the filter membrane. In particular, the retention of the contaminants in the receiving area can be improved by providing elements (flaps, barbs or rod-like elastic return locks) which can make it easy for the particles to enter but difficult to come out.
In an advantageous embodiment, the filter housing has a cylindrical or polygonal shape, and the cylindrical or polygonal circumferential surface of the filter housing comprises a filter membrane, wherein the washing liquid flows through the filter membrane in a radial direction from the filter interior (in particular from the filter interior into the outer space of the filter element) in order to remove contaminants in the washing liquid.
The following technical advantages are achieved: by configuring the cylindrical or polygonal circumferential surface of the filter housing as a filter membrane, a particularly large surface area of the filter element can be used for filtering contaminants, so that a high filtration effect of the filter element can be ensured.
In an advantageous embodiment, the laundry care appliance has a receiving element which is configured: receiving a filter element and receiving a washing liquid flowing through a filter membrane of the filter element, wherein the receiving element comprises, in particular: the washing appliance is inserted into the support shell and/or the support shell housing of the washing appliance surrounds the washing appliance, and/or a liquid line which is in particular fluidically connected to the supply and/or discharge of the lye container of the washing appliance.
The following technical advantages are achieved: the filter element can be introduced into an existing component of the laundry care appliance in a constructively simple manner, so that a simplified filter design can be ensured. In addition to the structural effective reception of the filter element, the receiving element ensures that: the washing liquid which comes out of the filter element during filtration can advantageously be received (or collected) and the collected washing liquid can then be led out of the receiving element again.
In an advantageous embodiment, the filter element has a further filter inlet for supplying washing liquid into the filter interior, wherein the further filter inlet is arranged in particular on the side of the filter housing facing away from the filter inlet.
The following technical advantages are achieved: the washing liquid may be supplied to the filter interior space from different sides of the filter housing via the filter inlet and via the further filter inlet. The movable cleaning element can thus be loaded with washing liquid and moved in particular from both sides, so that particularly effective removal of contaminants can be ensured.
In an advantageous embodiment, the movable cleaning element is configured to: the washing liquid (in particular, the washing liquid alone) flowing into the filter interior via the at least one filter inlet moves the movable cleaning element within the filter interior and/or the movable cleaning element is moved in the direction of movement by the drive of the laundry care appliance.
The following technical advantages are achieved: the movement of the movable cleaning element may either be caused by the flow pressure of the washing liquid flowing into the filter interior space, and/or the movement of the movable cleaning element may thereby be caused: the drive of the laundry care appliance directly drives the movable cleaning element. The drive can be connected to the movable cleaning element, in particular, by a drive shaft, and is configured, in particular, to: the movable cleaning element is moved in at least one direction of movement.
In an advantageous embodiment, the movable cleaning element is shaped as a disk (Scheibe), as a cylinder or as a wiper movement (RAKELKLAPPE), and/or has a contact region (in particular a resiliently deformable contact lip) which rests on the filter membrane, in particular in a force-and/or form-locking manner.
The following technical advantages are achieved: by the construction of the movable cleaning element as a disc, as a cylinder or as a wiper movement, a geometry can be obtained which advantageously matches the shape of the filter housing. In this case, the contact region (in particular the elastically deformable contact lip) rests in particular in a force-and/or form-locking manner on the filter membrane, so that contaminants which rest on the filter membrane can be effectively moved (in particular scraped off) by this contact region when the movable cleaning element is moved.
In an advantageous embodiment, the filter element has a guide element (in particular a guide rod and/or a guide sleeve), wherein the movable cleaning element is mounted on the guide element in a guided manner, in order to move the movable cleaning element in a guided manner in the direction of movement, in particular in a guided manner, until the movable cleaning element rests on a stop of the filter element.
The following technical advantages are achieved: the movable cleaning element can be prevented from edge lifting (VERKANTEN) during the displacement movement by the guide element.
In an advantageous embodiment, the movable cleaning element is arranged in a first displacement position (in particular at the filter inlet), wherein the movable cleaning element is displaced from the first displacement position into a second displacement position by a displacement in the displacement direction, wherein the second displacement position is arranged in that region of the filter interior space which faces away from the first displacement position (in particular at the further filter inlet).
The following technical advantages are achieved: the movable cleaning element can be moved (in particular by inflow of washing liquid from the filter inlet) from the first movement position into the second movement position.
In an advantageous embodiment, the movable cleaning element is moved from the second movement position into the first movement position along a further movement direction, wherein the further movement direction extends counter to the above-mentioned movement direction.
The following technical advantages are achieved: the movable cleaning element can be moved back from the second movement position into the first movement position again, in particular by inflow of washing liquid from the further filter inlet.
In an advantageous embodiment, the movement direction and/or the further movement direction extends between the filter inlet and the side of the filter housing facing away from the filter inlet, or the movement direction and/or the further movement direction extends along an arc of a circle around the rotation point of the rotatable cleaning element.
The following technical advantages are achieved: a removable cleaning element shaped differently depending on the geometry of the filter housing can be used, which can be moved in different directions of movement.
In an advantageous embodiment, the laundry care appliance has a first washing liquid supply for supplying washing liquid into the filter interior via the filter inlet and the laundry care appliance has a second washing liquid supply for supplying washing liquid into the filter interior via the further filter inlet, wherein the laundry care appliance has a hydraulic valve, which is configured to: the first washing liquid supply portion or the second washing liquid supply portion is hydraulically switched according to the movement of the movable cleaning member.
The following technical advantages are achieved: depending on the hydraulic switching state of the valve, the washing liquid can be introduced into the filter interior via different filter inlets, whereby the movable cleaning element can be acted upon by forces from different sides and can thus be moved in different directions of movement in order to ensure an effective removal of contaminants from the filter membrane.
In an advantageous embodiment, the hydraulic valve has a valve input, a first valve output, a second valve output and a flap (VENTILKLAPPE), wherein the flap in a first valve position fluidically blocks the first valve output and fluidically releases the second valve output, and wherein the flap in a second valve position fluidically blocks the second valve output and fluidically releases the first valve output, wherein the hydraulic valve has, in particular, a catch mechanism (Schnappmechanismus) which ensures: the valve flap switches between the first valve position and the second valve position in such a way that there is no intermediate state.
The following technical advantages are achieved: a particularly advantageous hydraulic switching of the hydraulic valve can be ensured, by means of which the valve can be switched directly between the first valve position and the second valve position. The simultaneous release of the first and second valve outputs in terms of fluid technology is prevented in particular by a snap-in mechanism.
In an advantageous embodiment, the laundry care appliance has a sensor for detecting the movement position of the movable cleaning element, and the laundry care appliance has a control device for switching the hydraulic valve, wherein the control device is configured to: the hydraulic valve is switched according to the movement position of the movable cleaning element detected by the sensor.
The following technical advantages are achieved: the end point of the movement of the movable cleaning element can advantageously be detected by a sensor, whereby an effective cleaning of the filter membrane can be ensured.
In an advantageous embodiment, the sensor comprises a mechanical sensor element or the sensor comprises a pressure sensor configured to: the fluid pressure of the fluid technology feed line to the filter element is sensed.
The following technical advantages are achieved: it is ensured that a transition point for the movement of the movable cleaning element is advantageously detected.
Drawings
Further embodiments are explained with reference to the accompanying drawings. The drawing shows:
Fig. 1 shows a schematic view of a laundry care appliance;
FIGS. 2A, 2B show schematic views of a filter element of a laundry care appliance;
fig. 3 shows a schematic view of a filter element in a receiving element of a laundry care appliance;
fig. 4 shows a schematic view of a filter element in a receiving element of a laundry care appliance;
FIG. 5 shows a schematic view of a filter element of a washware care implement having a removable cleaning element, according to one embodiment;
FIG. 6 shows a schematic view of a filter element of a washware care implement having a removable cleaning element, according to a further embodiment;
Fig. 7A, 7B show schematic views of a filter element of a laundry care appliance having a removable cleaning element, according to a further embodiment;
fig. 8A, 8B show schematic views of a filter element of a laundry care appliance having a removable cleaning element, according to a further embodiment;
FIG. 9 shows a schematic view of a filter element of a washware care implement having a removable cleaning element, according to a further embodiment;
10A, 10B illustrate schematic views of a valve of a laundry care appliance, according to a further embodiment; and
Fig. 11 shows a schematic view of a filter element with a removable cleaning element of a laundry care appliance according to a further embodiment.
Detailed Description
Fig. 1 shows a schematic view of a laundry care appliance 100, such as a washing machine, for example. The laundry care appliance 100 comprises a wash-in housing 101 into which wash care substances, such as for example detergents, can be injected into the wash-in housing 101. The laundry care appliance 100 comprises a door 103 for loading the laundry care appliance 100 with laundry.
The laundry care appliance 100 has an appliance housing 102 and a control device 104 which is only schematically shown in fig. 1.
Fig. 2A and 2B show schematic views of a filter element of a laundry care appliance. In fig. 2A, a lateral cross-sectional view of the filter element 105 is shown, while in fig. 2B, a cross-sectional view of the filter element 105 is shown from above.
The filter element 105 shown in fig. 2A and 2B is shown without the laundry care appliance 100. The filter element 105 has a filter housing 107, which filter housing 107 delimits a filter interior 109 of the filter element 105 at least in sections. Here, the filter element 105 has a filter membrane 111 for filtering the washing liquid 113, which filter membrane 111 is arranged on the filter housing 107. The filter element 105 has a filter inlet 115-1 for supplying the washing liquid 113 into the filter interior space 109.
The filter element 105 is configured to: the washing liquid 113 flowing into the filter interior space 109 via the filter inlet 115-1 is led through the filter membrane 111 in order to remove the contaminants 117 in the washing liquid 113.
As can be seen from fig. 2A and 2B, the filter housing 107 has in particular a cylindrical shape, wherein the cylindrical circumferential surface of the filter housing 107 in particular comprises a filter membrane 111. Thus, the filter membrane 111 is flowed radially outwards by the washing liquid 113 from the filter interior 109 and the contaminants 117 remain on the inner side of the filter membrane 111.
Fig. 3 and 4 show respectively schematic views of a filter element in a receiving element of a laundry care appliance. The filter element 105 shown in fig. 3 and 4, respectively, is received in a receiving element 119. The receiving element 119 is configured to: receiving the cleaning solution 113 flowing through the filter membrane 111 of the filter element 105. Subsequently, the washing liquid 113 received in the receiving element 118 can be led out again from the receiving element 118.
The receiving element 119 shown in fig. 3 is closed and can be acted upon in particular by pressure. The receiving element 119 shown in fig. 4 is open.
The receiving element 119 according to fig. 4 may comprise, inter alia: the wash-in pod 101 of the wash-care implement 100 and/or a pod housing of the wash-care implement 100 surrounding the wash-in pod 101. The receiving element according to fig. 3 can in particular comprise a liquid line of the laundry care appliance 100, which is in particular fluidically connected to the inlet and/or outlet of the lye container of the laundry care appliance 100.
Fig. 5 shows a schematic view of a filter element of a laundry care appliance having a removable cleaning element, according to one embodiment.
The filter element 105 has a removable cleaning element 121, which removable cleaning element 121 is arranged in the filter interior 109 and rests on the filter membrane 111. Because the filter membrane 111 is doped with the contaminant 117 during operation of the filter element 105, the removable cleaning element 121 is used to remove the contaminant 117 from the filter membrane 111.
For this purpose, the movable cleaning element 121 is moved in the movement direction 123 within the filter interior 109 in order to move the contaminants 117 accumulated on the filter membrane sheet 11 in the movement direction 123 and thereby remove the contaminants 117 at least in sections from the filter membrane sheet 111.
As can be seen from fig. 5, the contaminants 117 (in particular the contaminants 117 present underneath the movable cleaning element 121) are pressed in the filter interior 109 and can then be received in the receiving region 125 of the filter element 105, which is only schematically shown in fig. 5. According to the embodiment shown in fig. 5, the receiving region 125 is a region of the filter interior 109 which is arranged in particular on a side of the filter housing 107 facing away from the filter inlet 115-1.
The movable cleaning element 121 is in particular shaped as a disk or as a cylinder and can have a contact region 127 (in particular a resiliently deformable lip), which contact region 127 rests on the filter membrane 111, in particular in a force-fitting and/or form-fitting manner on the filter membrane 111.
Thus, in the embodiment shown in fig. 5, the contaminants 117 (in particular the contaminants 117 already present below the movable cleaning element 121) are collected below the movable cleaning element 121, and the filter membrane 111 above the movable cleaning element 121 has been freed from the contaminants 117.
To ensure that no jamming of the movement occurs, the filter element 105 can have a guide element 129 (in particular a guide rod and/or a guide sleeve), wherein the movable cleaning element 121 can be moved guidably along the guide element 129. Particularly in the case of a sufficiently self-length filter element 105, the guide element 129 can be dispensed with in particular when the length of the filter element 105 is greater than the width of the filter element 105, so that the removable cleaning element 121 can be supported in this case by contact with the filter membrane 111.
Fig. 6 shows a schematic view of a filter element with a removable cleaning element of a laundry care appliance according to a further embodiment. In the embodiment shown in fig. 6, the movable cleaning element 121 is automatically actuated by the hydraulic pressure generated when the washing liquid 113 flows into the filter interior 109.
Here, the washing liquid 113 first flows into the filter interior space 109 via the filter inlet 115-1, and the filter membrane 111 above the movable cleaning element 121 is slowly doped with the contaminant 117, so that the hydraulic resistance increases with an increasing accumulation of the contaminant 117. As soon as the force acting on the movable cleaning element 121 exceeds the friction force between the movable cleaning element 121 and the filter membrane 111, the movable cleaning element 121 is moved by the hydrostatic force in the movement direction 123 and the filter membrane 111 is thereby freed from the contaminants 117 at least in sections.
Here, the movable cleaning element 121 can be transferred in particular along the movement direction 123 from a first movement position, not shown in fig. 6, in which the movable cleaning element 121 is arranged at the filter inlet 115-1, to a second movement position, not shown in fig. 6, in which the movable cleaning element 121 is arranged at the further filter inlet 115-2.
The contaminant 117 is pressed by the movement of the movable cleaning element 121 and moved into the receiving area 125 of the filter element 105, which receiving area 125 is arranged in such an area of the filter interior 109: this region is disposed at the further filter inlet 115-2.
The final boundary of the movement of the movable cleaning element 121 can be ensured in particular by a stop, which is not shown in fig. 5.
Here, the second movement position of the movable cleaning element 121 can be detected in particular by a sensor (in particular a mechanical sensor or a pressure sensor) of the laundry care appliance 100, and the laundry care appliance 100 can thus switch the hydraulic valve 131 of the laundry care appliance 100 such that the washing liquid 113 is no longer fed into the filter interior 109 via the filter inlet 115-1 via the first washing liquid feed 133-1, but the washing liquid 113 is fed into the filter interior 109 via the further filter inlet 115-2 via the second washing liquid feed 133-2.
Thereby, the stagnation pressure (Staudruck) now acts on the movable cleaning element 121 from the further direction, so that the movable cleaning element 121 is moved again upwards (in particular into the upper first movement position) from the lower second movement position along the further movement direction 135 which extends opposite to the movement direction 133.
Here, during the movement of the movable cleaning element 121 in the further movement direction 135, the region of the filter membrane 111 contacted by the movable cleaning element 121 is freed from the contaminant 117, so that the contaminant 117 can be compressively received in the receiving region 125 of the filter interior 109, which receiving region 125 is arranged at the filter inlet 115-1 in the filter interior 109.
By detecting the final position (or the first and second movement positions) of the movable cleaning element 121 accordingly (in particular by a sensor), and by switching the valve 131 accordingly hydraulically, a reciprocating movement of the movable cleaning element 121 in the movement direction 123 and in the further movement direction 135 can be ensured.
Thereby, the contaminants removed from the filter membrane 111 are pressed, and the pressed contaminants 117 are alternately received in the receiving areas 125 in the areas of the further filter inlets 115-2 and in the receiving areas 125 in the areas of the filter inlets 115-1, respectively.
In particular, here, the travel distance may become smaller and smaller due to the multiple reciprocations of the movable cleaning element 121 and due to the increasing amount of contaminants 117 in the filter element 105, until the movable cleaning element 121 stays in the middle of the filter element 105. In this case, the filter element 105 can in particular be embodied as a disposable solution (disposable replacement), in which the filter element 105, which is almost completely filled with the pressed contaminant 117, is replaced after a certain use time.
Fig. 7A, 7B show schematic views of a filter element of a laundry care appliance having a removable cleaning element according to a further embodiment.
The movable cleaning elements 121 shown in fig. 7A and 7B even each comprise at least one receiving area 125 for receiving the pressed contaminant 117, wherein the at least one receiving area 125 comprises at least one recess in the movable cleaning element 121.
In particular, the retention of the contaminants 117 in the respective receiving areas 125 of the respective movable cleaning elements 121 can be improved by means of elements (e.g. flaps, barbs and/or rod-shaped elastic backflow blocking means) which are not shown in fig. 7A and 7B and which can make it easy for particles to enter but difficult to come out.
Fig. 8A, 8B show schematic views of a filter element of a laundry care appliance having a removable cleaning element, according to a further embodiment.
The filter housing 107 of the filter element 105 here has the shape of a cylindrical sector which spans a part of a circular arc, in particular a quarter circle. Here, the movable cleaning elements 121 shown individually in fig. 8A are in particular shaped as rotatable cleaning elements 121, in particular as wiper movements which can be rotated about a cylinder axis 137 of the wiper movements.
Here, the filter area of the filter membrane 111 is increased, since not only the cylindrical circumferential surface of the filter element 105, but also both top surfaces of the filter housing 107 can be encompassed by the filter membrane 111.
As shown only schematically in fig. 8A and 8B, the movement direction 123 and the further movement direction 135 extend along an arc of a circle around the rotation point of the rotatable cleaning element 121 defined by the cylinder axis 137.
As can be seen from fig. 8B, the contaminants 117 adhering to the filter membrane 111 are removed, pressed by the rotatable cleaning element 121 being rotated alternately in the direction of movement 123 and in the further direction of movement 135, and these pressed contaminants 117 can be received in the receiving area 125 of the filter interior 109.
Fig. 9 shows a schematic view of a filter element with a removable cleaning element of a laundry care appliance according to a further embodiment.
Here, the filter element 105 shown in fig. 9 has the shape of a cylindrical sector that spans a portion of a circular arc (in particular a full circle). Here, the rotatable cleaning element 121 (in particular the wiper blade) can be moved in a movement direction 123 and a further movement direction 135, wherein the movement direction 123 and the further movement direction 135 extend along an arc of a circle around a rotation point of the rotatable cleaning element 121 defined by a cylinder axis 137.
The contaminants 117 are thereby removed from the filter membrane 111, pressed and received in the receiving area 125 of the filter interior 109, which is only schematically shown in fig. 9.
The rotary movement can be performed particularly advantageously by the rotatable cleaning element 121 (in particular the wiper blade) shown in fig. 8A and 8B (or fig. 9), since instead of a linear guide a rotary bearing can be used and a rotary system can advantageously be produced. Furthermore, in particular the rotary valve can be directly transferred to the cylindrical section of the rotatable cleaning element 121, so that the washing liquid 113 can be introduced into the filter interior 109 by the rotatable cleaning element 121 itself.
Fig. 10A and 10B show schematic views of a valve of a laundry care appliance according to a further embodiment.
The valve 131 has a snap-in mechanism comprising a switching lever 139 and a spring 141, which switches the valve flap 143 of the valve 131 between the first valve position and the second valve position in such a way that the valve flap 143 switches between the first and the second valve position without intermediate state.
Thus, the washing liquid 113 flowing into the valve 131 via the valve input 145 may be supplied to either the first washing liquid supply 133-1 through the first valve output 147-1 or the second washing liquid supply 133-2 through the second valve output 147-2 depending on the valve position. The snap mechanism ensures: only one of the two valve outputs 147-1, 147-2 is released in terms of fluid technology.
For detailed information about the arrangement of the valve 131 in the laundry care appliance 100, in particular about the fluidic connection with the filter element 105, see fig. 6.
Fig. 11 shows a schematic view of a filter element with a removable cleaning element of a laundry care appliance according to a further embodiment.
In the embodiment shown in fig. 11, the amplitude of movement of the movable cleaning element 121 is limited to the middle region of the filter housing 107. Here, the washing liquid 113 is likewise supplied via the filter inlet 115-1 and via the further filter inlet 115-2 in the middle region of the filter housing 107, in particular via the cylindrical circumferential surface of the filter housing 107.
The filter housing 107 of the filter element 105 shown in fig. 11 has a receiving area 125 at the upper and lower side of the filter housing 107, respectively, which is configured as a pollutant trap (Verunreinigungsdepot) in order to receive the pressed pollutant 117, which pressed pollutant 117 has been removed from the filter membrane 111 by the movable cleaning element 121.
For a detailed design of the valve 131 and with regard to the function of the movable cleaning element 121, reference is made to the previous embodiments.
All the features explained and shown in connection with the individual embodiments of the invention can be arranged in different combinations in the subject matter according to the invention in order to achieve their advantageous effects at the same time.
The scope of the invention is derived from the technical solution of the invention and is not limited by the features explained in the description or shown in the drawings.
List of reference numerals
100. Washing care implement
101. Is punched into the supporting shell
102. Appliance shell
103. Door
104. Control device
105. Filter element
107. Filter housing
109. Filter interior space
111. Filter membrane
113. Washing liquid
115-1 Filter inlet
115-2 Additional filter inlet
117. Contaminants (S)
119. Receiving element
121. Movable cleaning element
123. Direction of movement
125. Receiving area
127. Contact area
129. Guide element
131. Valve
133-1 First washing liquid supply portion
133-2 Second washing liquid supply part
135. Additional direction of movement
137. Cylindrical axis of wiper movement
139. Switching lever
141. Spring
143. Valve clack
145. Valve input
147-1 First valve output
147-2 Second valve output
Claims (24)
1. A laundry care appliance (100) having a filter element (105) for filtering a washing liquid (113),
Wherein the filter element (105) has a filter housing (107) which delimits a filter interior (109) of the filter element (105) at least in sections,
Wherein the filter element (105) has a filter membrane (111) for filtering a washing liquid (113), which is arranged on the filter housing (107),
Wherein the filter element (105) has a filter inlet (115-1) for feeding a washing liquid (113) into the filter interior (109),
Wherein the filter element (105) is configured to: directing a washing liquid (113) flowing into the filter interior (109) via the filter inlet (115-1) through the filter membrane (111) for removing contaminants (117) from the washing liquid (113),
Wherein,
The filter element (105) has a removable cleaning element (121) which is arranged in the filter interior (109) and rests on the filter membrane (111),
The movable cleaning element (121) is moved in a movement direction (123) inside the filter interior (109) in order to move contaminants (117) accumulated on the filter membrane (111) in the movement direction (123) over the filter membrane (111) in order to remove the contaminants (117) at least in sections from the filter membrane (111) and in order to squeeze the contaminants (117), and
Characterized in that the filter element (105) has a receiving area (125) which is configured to: the extruded contaminant (117) is received.
2. The laundry care appliance (100) of claim 1,
It is characterized in that the method comprises the steps of,
The receiving area (125) comprises an area of the filter interior (109), and/or
The receiving area (125) comprises an area of the movable cleaning element (121), and/or
The receiving area (125) comprises an area of the filter housing (107).
3. The laundry care appliance (100) according to claim 1 or 2,
It is characterized in that the method comprises the steps of,
The filter housing (107) has a cylindrical shape or a polygonal shape, and
Wherein the cylindrical or polygonal circumferential surface of the filter housing (107) comprises the filter membrane (111),
Wherein the washing liquid (113) flows radially from the filter interior (109) through the filter membrane (111) in order to remove contaminants (117) from the washing liquid (113).
4. The laundry care appliance (100) according to claim 1 or 2,
It is characterized in that the method comprises the steps of,
The laundry care appliance (100) has a receiving element (119) which is configured: -receiving the filter element (105), -receiving a washing liquid (113) flowing through a filter membrane (111) of the filter element (105).
5. The laundry care appliance (100) according to claim 1 or 2,
It is characterized in that the method comprises the steps of,
The filter element (105) has a further filter inlet (115-2) for feeding a washing liquid (113) into the filter interior space (109).
6. The laundry care appliance (100) according to claim 1 or 2,
It is characterized in that the method comprises the steps of,
The movable cleaning element (121) is configured to be caused to move inside the filter interior space (109) by a washing liquid (113) flowing into the filter interior space (109) via at least one filter inlet (115-1, 115-2), and/or
-Moving the movable cleaning element (121) along the movement direction (123) by means of a drive of the laundry care appliance (100).
7. The laundry care appliance (100) according to claim 1 or 2,
It is characterized in that the method comprises the steps of,
The movable cleaning element (121) is shaped as a disc, cylinder or wiper, and/or
The movable cleaning element (121) has a contact region (127) which rests on the filter membrane (111).
8. The laundry care appliance (100) according to claim 1 or 2,
It is characterized in that the method comprises the steps of,
The filter element (105) has a guide element (129),
Wherein the movable cleaning element (121) is mounted on the guide element (129) in a guided manner, in order to move the movable cleaning element (121) in a guided manner along the movement direction (123).
9. The laundry care appliance (100) according to claim 5,
It is characterized in that the method comprises the steps of,
The movable cleaning element (121) is arranged in a first movement position,
Wherein the movable cleaning element (121) is transferred from the first to the second movement position by a movement along the movement direction (123),
Wherein the second displacement position is arranged in a region of the filter interior (109) facing away from the first displacement position.
10. The laundry care appliance (100) of claim 9,
It is characterized in that the method comprises the steps of,
The movable cleaning element (121) is moved from the second movement position into the first movement position along a further movement direction (135),
Wherein the further movement direction (135) extends opposite to the movement direction (123).
11. The laundry care appliance (100) of claim 10,
It is characterized in that the method comprises the steps of,
The movement direction (123) and/or the further movement direction (135) extends between the filter inlet (115-1) and a side of the filter housing (107) facing away from the filter inlet (115-1), or
The movement direction (123) and/or the further movement direction (135) extend along an arc of a circle around the rotation point of the rotatable cleaning element (121).
12. The laundry care appliance (100) according to claim 1 or 2,
It is characterized in that the method comprises the steps of,
The laundry care appliance (100) has a first washing liquid supply (133-1) for supplying a washing liquid (113) into the filter interior (109) via the filter inlet (115-1), and
The laundry care appliance (100) has a second washing liquid supply (133-2) for supplying washing liquid (113) into the filter interior (109) via a further filter inlet (115-2),
Wherein the laundry care appliance (100) has a hydraulic valve (131) configured to: according to the movement of the movable cleaning element (121), the first washing liquid supply part (133-1) or the second washing liquid supply part (133-2) is hydraulically switched.
13. The laundry care appliance (100) of claim 12,
It is characterized in that the method comprises the steps of,
The hydraulic valve (131) has a valve input (145), a first valve output (147-1), a second valve output (147-2) and a flap (143),
Wherein the flap (143) in a first valve position fluidically closes the first valve output (147-1) and fluidically releases the second valve output (147-2), and
Wherein the flap (143) in the second valve position closes the second valve output (147-2) in terms of fluid technology and releases the first valve output (147-1) in terms of fluid technology.
14. The laundry care appliance (100) of claim 12,
It is characterized in that the method comprises the steps of,
The laundry care appliance (100) has a sensor for detecting the movement position of the movable cleaning element (121), and
The laundry care appliance (100) has a control device (104) for switching the hydraulic valve (131),
Wherein the control device (104) is configured to: the hydraulic valve (131) is switched according to the movement position of the movable cleaning element (121) detected by the sensor.
15. The laundry care appliance (100) of claim 14,
It is characterized in that the method comprises the steps of,
The sensor comprises a mechanical sensor element, or
The sensor includes a pressure sensor configured to: a fluid pressure of a fluid technology feed line to the filter element (105) is detected.
16. The laundry care appliance (100) according to claim 2,
It is characterized in that the method comprises the steps of,
The receiving area (125) comprises a recess in the movable cleaning element (121), and/or
The receiving area (125) comprises a contaminant accumulation in the filter housing (107).
17. The laundry care appliance (100) according to claim 3,
It is characterized in that the method comprises the steps of,
Wherein a washing liquid (113) flows through the filter membrane (111) from the filter interior (109) into the exterior of the filter element (105).
18. The laundry care appliance (100) according to claim 4,
It is characterized in that the method comprises the steps of,
The receiving element (119) comprises:
-a wash-in housing (101) of the laundry care appliance (100), and/or
-A housing shell of the laundry care appliance (100) surrounding the wash-in housing (101), and/or
-A liquid line fluidly connected to an input and/or an output of an alkaline container of the laundry care appliance (100).
19. The laundry care appliance (100) according to claim 5,
It is characterized in that the method comprises the steps of,
The further filter inlet (115-2) is arranged on a side of the filter housing (107) facing away from the filter inlet (115-1).
20. The laundry care appliance (100) of claim 6,
It is characterized in that the method comprises the steps of,
The movable cleaning element (121) is configured to be moved within the filter interior space (109) solely by the washing liquid (113).
21. The laundry care appliance (100) of claim 7,
It is characterized in that the method comprises the steps of,
The contact region (127) is a resiliently deformable contact lip, which rests in a force-and/or form-locking manner on the filter membrane.
22. The laundry care appliance (100) of claim 8,
It is characterized in that the method comprises the steps of,
The guide element (129) is a guide rod and/or a guide sleeve,
Wherein the movable cleaning element (121) is mounted on the guide element (129) in a guided manner, in order to move the movable cleaning element (121) in a guided manner along the movement direction (123) until the movable cleaning element (121) rests on a stop of the filter element (105).
23. The laundry care appliance (100) of claim 9,
It is characterized in that the method comprises the steps of,
The first mobile position is arranged at the filter inlet (115-1),
Wherein the second movement position is arranged at the further filter inlet (115-2).
24. The laundry care appliance (100) of claim 13,
It is characterized in that the method comprises the steps of,
The hydraulic valve (131) has a snap-in mechanism ensuring that: the valve flap (143) switches between the first valve position and the second valve position without an intermediate state.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019216696.2A DE102019216696A1 (en) | 2019-10-30 | 2019-10-30 | Laundry care device with a filter element |
| DE102019216696.2 | 2019-10-30 |
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| Publication Number | Publication Date |
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| CN112746461A CN112746461A (en) | 2021-05-04 |
| CN112746461B true CN112746461B (en) | 2024-04-26 |
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| CN202011171559.2A Active CN112746461B (en) | 2019-10-30 | 2020-10-28 | Laundry care appliance with filter element |
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| Country | Link |
|---|---|
| EP (1) | EP3816336B1 (en) |
| CN (1) | CN112746461B (en) |
| DE (1) | DE102019216696A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021203746A1 (en) * | 2021-04-15 | 2022-10-20 | BSH Hausgeräte GmbH | FILTERING SYSTEM, WATER-CONTAINING HOUSEHOLD APPLIANCE AND METHOD OF FILTERING A FLUID |
| DE102021115442A1 (en) * | 2021-06-15 | 2022-12-15 | Hengst Se | Microplastic filter for washing machine |
| DE102021207116A1 (en) | 2021-07-07 | 2023-01-12 | BSH Hausgeräte GmbH | FILTER SYSTEM AND METHOD OF CLEANING A FILTER SURFACE |
| DE102021207458A1 (en) * | 2021-07-14 | 2023-01-19 | BSH Hausgeräte GmbH | Laundry care device with a filter element |
| WO2023237199A1 (en) * | 2022-06-09 | 2023-12-14 | Electrolux Appliances Aktiebolag | Laundry washing machine equipped with a microparticles filter device |
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Also Published As
| Publication number | Publication date |
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| CN112746461A (en) | 2021-05-04 |
| EP3816336A1 (en) | 2021-05-05 |
| EP3816336B1 (en) | 2024-02-28 |
| DE102019216696A1 (en) | 2021-05-06 |
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