CN111560753A - Household appliance for treating laundry - Google Patents
Household appliance for treating laundry Download PDFInfo
- Publication number
- CN111560753A CN111560753A CN202010087910.3A CN202010087910A CN111560753A CN 111560753 A CN111560753 A CN 111560753A CN 202010087910 A CN202010087910 A CN 202010087910A CN 111560753 A CN111560753 A CN 111560753A
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- Prior art keywords
- filter
- fluid
- unit
- appliance
- assemblies
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Links
- 239000012530 fluid Substances 0.000 claims abstract description 113
- 230000000712 assembly Effects 0.000 claims abstract description 58
- 238000000429 assembly Methods 0.000 claims abstract description 58
- 238000001914 filtration Methods 0.000 claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000005086 pumping Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 28
- 230000005484 gravity Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims 13
- 238000005406 washing Methods 0.000 description 17
- 239000012528 membrane Substances 0.000 description 15
- 230000035508 accumulation Effects 0.000 description 3
- 241000234295 Musa Species 0.000 description 2
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/42—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining
-
- 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
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention relates to a household appliance (1) for treating laundry, comprising: an appliance bottom (12b) and an appliance upper side (12a), the appliance upper side (12a) being opposite to the appliance bottom (12 b); a pump unit (53) for cyclically pumping and/or pumping out a fluid (35) present in the cleaning and/or drying process; a drive unit (55) for substantially driving the pump unit (53); a control unit (57) for controlling the drive unit (55); -a filtering unit (15) for filtering the fluid (35), the filtering unit (15) comprising a plurality of filtering assemblies (13), the plurality of filtering assemblies (13) being arranged in series and the plurality of filtering assemblies (13) being in fluid communication with each other through at least one overflow (27), respectively.
Description
Technical Field
The invention relates to a household appliance for treating laundry.
Background
In household appliances for treating laundry, a filter unit is used, which serves to filter a fluid. Such fluid may be a water-soap-mixture (e.g. in washing machine and dishwasher and/or washer-dryer applications), or may comprise steam or process air (e.g. in dryer and/or washer-dryer applications). In the operation of such a household appliance for treating laundry, dirt particles can enter the respective fluid during a cleaning or drying process (also referred to as a cleaning or drying process). Dirt particles can furthermore comprise leftovers, hair, fat, sand, fibers from small items of laundry, micro-plastic particles and/or dust or dirt particles.
During and/or after the cleaning or drying process, these dirt particles are filtered from the respective process by the filter unit. During the cleaning or drying process, one or more circulation pumping processes can be carried out, in which the fluid is cleaned from the dirt particles and is recirculated into the cleaning or drying process. After the cleaning or drying process, what is known as residual fluid remains, which is enriched with dirt particles. This remaining fluid is usually no longer needed and is pumped out of the household appliance and fed into the drain opening or drain line. The fluid is also led through the filter unit again before being fed into the drain opening, whereby little (or almost no) dirt particles can enter the sewage or sewage system.
Document US 7,467,636B 2 shows a household appliance, in particular a dishwasher, which essentially comprises a spraying system and a filter assembly. The filter assembly is arranged in a lower region of a rinsing container of the dishwasher. The filter assembly is designed in the shape of a disk and has a first filter region which is arranged in an outer ring of the disk-shaped filter assembly and, in addition, a second filter region which is arranged in an inner flange of the disk-shaped filter assembly.
Document US 5,779,812 a describes a further filter unit of a dishwasher. The filter unit likewise has a disk-shaped design and comprises a first and a second filter device. The first filter device has mutually separate sections with fine-pored filter membranes. The second filter means in contrast comprises a coarse-pored filter membrane. Different particles can be filtered from the fluid by means of these different membranes.
As is known from the two aforementioned documents, different filter systems for water-conducting (or fluid-conducting) domestic appliances are known from the prior art, which filter dirt particles and fibers out of the fluid. In particular during the cleaning or drying of the laundry, strong and rapidly forming aggregates are formed. These agglomerates are also composed of dirt particles extracted from the laundry to be treated. By means of these accumulations, the filter membrane is almost and/or completely blocked in a minimum of time (usually during the cleaning and/or drying process of the laundry). This leads to a filter unit which cannot flow through and may even lead to an overflow of the washing machine, so that fluid (e.g. wash liquor) overflows from the washing machine.
Disclosure of Invention
The object of the present invention is therefore to provide a household appliance for treating laundry, having a filter unit, wherein the filter unit ensures a filtration of the laundry in a plurality of cleaning and/or drying processes and a filtration result in which the fluid is virtually free of dirt particles.
This object is achieved by the features of claim 1. Advantageous embodiments are the subject matter of the dependent claims, the description and the figures.
According to one aspect, the object is achieved according to the invention by a household appliance for treating laundry. The household appliance comprises an appliance base and an appliance top, wherein the appliance top is opposite the appliance base. Furthermore, the household appliance has a pump unit for cyclically pumping and/or pumping out the fluid present during the cleaning and/or drying process. The pump unit is basically driven by the drive unit. Furthermore, the household appliance according to the invention has a control unit for controlling the drive unit and a filter unit for filtering the fluid, wherein the filter unit comprises a plurality of filter assemblies. A plurality of filter assemblies are arranged in series and are each in fluid communication with each other via at least one overflow.
Such an overflow
Clogging of the filter unit (or filter assemblies) is prevented so that even in the event of clogging of one filter assembly, fluid can still be filtered in the other filter assembly of the filter unit. Also, a longer application (or running) time of the filter unit is thereby ensured without the need for cleaning or replacing the filter. Thereby, also in case of clogging of the filter unit, fluid is avoidedRun out of control from the cleaning and/or drying process.
Advantageously, the filter unit has a filter inlet and a filter outlet, wherein the fluid flows into the filter unit through the filter inlet and the fluid flows along a filter trajectory (filterbhn) to the filter outlet and out of the filter unit through the filter outlet, wherein the fluid flows along the filter trajectory substantially due to gravity.
A cost-effective production of the filter unit is thereby ensured, since no additional drive unit and/or pump unit is required for the filter unit to move the fluid along the filter path.
The more filter elements comprise filter components, the longer the filtering (or application) of the filter element can be ensured. However, in order to be able to arrange these multiple filter assemblies, the filter unit must have a certain height. The filter unit can vary its structure depending on the available installation space. Preferably, the filter unit extends from the upper side of the appliance up to almost the bottom of the appliance.
Advantageously, the plurality of filter assemblies has a respective upper filter region and a respective lower filter region, wherein the upper filter region is arranged in the region of the upper side of the device and the lower filter region is arranged in the region of the bottom of the device. In addition, overflow edges of the overflow are formed in the upper and/or lower filter region.
Thereby it is ensured that: the fluid can continue to flow to one and/or more additional filter assemblies and/or to the filter outlet in the event of a blockage of the filter assembly due to a build-up of fluid particles.
In an advantageous embodiment, the filter element which is arranged closest to the filter inlet is subjected to a fluid load, wherein the plurality of filter elements are arranged such that, if the fluid-loaded filter element is substantially unable to flow through due to a buildup of fluid particles, the fluid flows into the closest filter element via at least one overflow edge of the overflow.
In the event of a filter element clogging, the filtration process can still be continued, since the fluid can flow via the overflow edge to the closest filter element.
Advantageously, the plurality of filter assemblies are of substantially arcuate configuration.
In the case of a substantially arcuate filter assembly, the fluid accumulation (or dirt particles) may slide into the lower filter region due to gravity, while filtration is maintained in the upper filter region.
Advantageously, the plurality of filtering assemblies are in the shape of a cascade
And (4) arranging. By means of this stepped waterfall (or stepped) arrangement it is ensured that: the fluid flows to the other filter assembly due to gravity.
In the case where all filter assemblies are substantially unable to flow through, the fluid flows along a serpentine-shaped filter path into the filter outlet.
Based on gravity, the fluid will flow serpentine to the filter outlet in case of clogging of the filter assembly(s), thereby ensuring that: the fluid flowing into the filter unit can in turn flow out of the filter unit and thus no (or hardly any) fluid remains in the filter unit after the cleaning or drying process has ended. Meander shape
The filter trajectory of (a) can be understood as: the fluid seeks a path how it can flow through the filter unit. However, this is associated with the accumulation of dirt particles. Basically, the serpentine-shaped filter track extends from the filter inlet up to the filter outlet.
According to a second aspect of the invention, the object is achieved by a method for filtering a fluid in a household appliance for laundry treatment. Such a household appliance for the treatment of laundry comprises an appliance base and an appliance top, wherein the appliance top is opposite the appliance base. Furthermore, the household appliance for treating laundry comprises: a pump unit for cyclically pumping and/or pumping out a fluid present during the cleaning and/or drying process; a drive unit for substantially driving the pump unit. The driving unit is controlled by the control unit. Furthermore, such a household appliance for treating laundry has a filter unit for filtering a fluid, wherein the filter unit comprises a plurality of filter assemblies. The plurality of filter assemblies are arranged in series and the filter assemblies are in fluid communication with each other via at least one overflow.
The following technical advantages are thereby achieved: in the event of a blockage of one filter assembly, the fluid can still flow into the other filter assembly via the overflow, so that the filtration, cleaning and/or drying process can be continued.
Preferably, the fluid is pumped by the pump unit to the filter inlet, through which the fluid flows into the filter unit, such that the fluid flows through the filter unit and loads at least one of the plurality of filter assemblies due to gravity along a filter trajectory, which extends from the filter inlet to the filter outlet, and flows out of the filter unit in filtered form through the filter outlet.
This ensures a cost-effective production of the filter unit, since no additional pump unit and drive unit for the filter unit are required, since the fluid is driven by gravity and thus flows through the filter unit.
Advantageously, the fluid flows through the filter inlet to the filter element arranged closest to the filter inlet and flows through the filter element loaded for such a long time that the filter element is substantially unable to flow through.
As a result, not substantially all filter assemblies of the plurality of filter assemblies are soaked (benetzt) with a deposit of fluid particles during the cleaning and/or drying process, so that those filter assemblies soaked with the deposit can be cleaned simply and quickly without the need to clean all filter assemblies of the filter unit at each cleaning.
Preferably, in the event that a filter element becomes substantially impermeable to flow through, fluid can flow via the overflow edge of the overflow to such a filter element: the filter assembly is closest to the filter assembly that is substantially impervious to flow therethrough.
The filtration process can still continue when one or several of the plurality of filter assemblies has become nearly non-flow through.
Drawings
Additional features and advantages of the invention result from the following description and from the reference to the drawings.
Fig. 1 shows a schematic front view of a household appliance for treating laundry (here, for example, a washing machine);
FIG. 2 shows a schematic side view of a filter assembly;
FIG. 3 illustrates a stepped waterfall arrangement of a plurality of filter assemblies of a filter unit;
FIG. 4 schematically illustrates a filter unit having a substantially identical filter assembly;
FIG. 5 shows a further embodiment and arrangement of a plurality of filter elements in a filter unit;
fig. 6 shows schematically in an extremely simplified form the cycle principle of a household appliance for treating laundry.
Detailed Description
Fig. 1 shows a schematic front view of a household appliance 1 for treating laundry, in particular a washing machine. The household appliance 1 may also be understood as a dryer, a washer dryer or a dishwasher. For the sake of simplicity, only the laundry machine is further described below as the household appliance 1.
The household appliance 1 for treating laundry in fig. 1 has a washing machine front wall 3. A movable flushing housing 5 is also arranged on the front wall 3 of the washing machine, in which flushing housing 5 washing care substances (for example detergent and/or softener) can be filled, and a washing machine display unit 7 is also arranged, by means of which washing machine display unit 7 the washing program can be set in addition. Furthermore, a pivotable washing machine door 9 and a cleaning opening (not shown) covered by means of a cleaning opening cover 11 are arranged on the washing machine front wall 3 of the domestic appliance 1 for treating laundry. The household appliance 1 further has an appliance upper side 12a and an appliance bottom 12b facing the appliance upper side 12 a.
In fig. 2, a schematic side view of a filter assembly 13 arranged in a filter unit 15 is shown. The filter assembly 13 basically comprises a filter frame 17. A filter membrane 19 is arranged in the filter frame 17. The filter membrane 19 is fixedly connected to the filter frame 17. The filter membrane 19 is connected to the filter frame 17, for example, by means of an adhesive connection and/or a screw connection and/or a clamping connection. However, other fixing means (or connecting means) are also known to the person skilled in the art. The filter frame 17 of the filter assembly 13 has a substantially arcuate design, so that the filter membrane 19 is received in the filter frame 17 in a curved manner. The arcuate form of the filter assembly 13 may be configured as a banana.
The filter membrane 19 has an upper filter area 21 and a lower filter area 23. Depending on how the filter membrane 19 from fig. 2 is integrated into the filter unit 15, the upper filter region 21 and the lower filter region 23 shown in fig. 2 can be reversed. Ideally, the upper filter region 21 is arranged in the region of the upper side 12a of the device, while the lower filter region 23 is arranged in the region of the bottom 12b of the device. The filter membrane 19 may have any membrane pattern.
Furthermore, the filter assembly 13 has a leading edge 25. The overflow edge 25 can be arranged either in the upper filter region 21 of the filter frame 17 or in the lower filter region 23 of the filter frame 17. The overflow edge 25 is arranged on that side of the filter frame 17 which faces the device upper side 12 a. In the region of the overflow edge 25, an overflow 27 is formed. The overflow 27 preferably extends between the overflow edge 25 and the appliance upper side 12a of the household appliance 1. Furthermore, the overflow 27 and the overflow edge 25 will be discussed further below.
Fig. 3 shows a schematic illustration of a stepped waterfall arrangement of a plurality of filter assemblies 13 of a filter unit 15. The filter unit 15 basically has a filter housing 29. The filter housing 29 basically includes a filter inlet 31 and a filter outlet 33. The filter inlet 31 is preferably formed in the region of the upper side 12a of the device. In the region of the appliance base 12b, a filter outlet 33 is preferably formed. By this arrangement it is ensured that: fluid 35 is able to flow from filter inlet 31 to filter outlet 33 due to gravity.
Arrow a indicates the direction of flow of the fluid 35 into the filter unit 15 through the filter inlet 31. Arrow B indicates the direction of flow of the fluid 35 from the filter unit 15 through the filter outlet 33. Very simplified representation: the fluid 35 flows into the filter unit 15 through the filter inlet 31, is filtered in the filter unit 15 and flows out of the filter unit 15 again in filtered form through the filter outlet 33. In the filter unit 15, the fluid 35 flows along the filter track 37 due to gravity. The filter track 37 can extend differently depending on the degree of contamination of the filter unit 15, however always from the filter inlet 31 up to the filter outlet 33.
However, it is also conceivable for the filter inlet 31 and the filter outlet 33 to also be formed at another point of the filter unit 15. For example, the filter inlet 31 and the filter outlet 33 can also be formed on the side wall 40 of the household appliance. It only has to be ensured that: the fluid 35 is able to flow in the filter unit 15 due to gravity.
Furthermore, the filter unit 15 comprises in fig. 3 a plurality of filter assemblies 13. These filter assemblies 13 are arranged in series. Further, a plurality of filter assemblies 13 are arranged in a stepped waterfall shape (or stepped shape). These filter assemblies 13 are fixedly connected to the filter unit 15. However, it is also conceivable for these filter assemblies 13 to be designed such that they can be removed from the filter unit 15 (for example for cleaning purposes). During operation of the household appliance 1 (in particular during the cleaning process and/or the drying process), it must however be ensured that: these individual filter assemblies 13 are fixedly anchored in the filter unit 15. Fluid 35 loads filter assemblies 13 without allowing filter assemblies 13 to become dislodged from their anchored state thereby interfering with the filtration process.
Furthermore, the filter assembly 13 is of substantially arcuate configuration. The filter assembly 13 can however also be constructed in a slightly bent design as shown in fig. 3. It is also contemplated that the filter assembly may have a hook shape, a banana shape, or any other shape. In fig. 3, the filter unit 15 has seven filter assemblies 13. More or fewer filter assemblies 13 are also contemplated. In order to ensure long operating times without the filter unit 15 having to be cleaned, it is advantageous if the filter unit 15 extends from the top side 12a of the device almost as far as the bottom 12b of the device. Depending on the space available in the household appliance 1, the filter unit 15 can vary in its design and be constructed larger or smaller.
As shown in fig. 3, the upper filter area 21 has a leading edge 25. The flow direction of the fluid 35 is shown in the direction of the arrow C in the region of the overflow 27. In fig. 3, fluid particles 39 are shown by way of example as accumulating on a first pair (two) of filter assemblies 13, the two filter assemblies 13 being arranged closest to filter inlet 31. These fluid particles 39 may furthermore consist of hair, fibres from small pieces of washing or shoes, fat, sand, food remnants, micro plastic particles and/or dust or dirt particles. Depending on the frequency of use of the cleaning filter unit 15 and depending on the degree of soiling of the laundry, a plurality of filter assemblies 13 can be saturated with dirt particles or fluid particles 39.
The filtering process of the filtering unit 15 is briefly described next.
If a filter element 13 is saturated with fluid particles 39 in such a way that fluid 35 can no longer flow through the filter membrane 19 of a filter element 13, fluid 35 flows via the overflow edge 25 in the direction of arrow C into the filter element 13 which is arranged closest to the filter element 13 which is not able to flow through. In order for the fluid 35 to reach the overflow 27, the filter assembly 13 does not have to become completely impervious. The partial traversability is already sufficient for lifting the fluid 35 within the filter assembly 13 to allow the fluid 35 to flow to the filter assembly 13 that is located behind. The fluid 35 flows into the downstream filter module 13 via the overflow 27 for such a long time that such a filter module 13 is reached: for this filter assembly 13, the fluid 35 can flow through the filter membrane 19. It can occur here that the fluid 35 flows along a serpentine-shaped filter path 37. The serpentine-shaped filter path 37 is understood to mean that the fluid 35 in the filter unit 15 follows a path through the arrangement of the filter elements 13, so that the fluid 35 reaches the filter element 13 to be flowed through and reaches the filter outlet 33.
Fig. 4 shows a further embodiment (or another arrangement) of the filter arrangement 13 of the filter unit 15 according to the invention. The figure shows a filter unit 15 with a substantially structurally identical filter assembly 13. These filter assemblies 13 differ from the filter assembly 13 shown in fig. 3 in that: these filter assemblies 13 have another orientation.
A plurality of filter assemblies 13 extend in fig. 4 from the bottom 12b of the appliance in the direction of the upper side 12a of the appliance. In the embodiment in fig. 4, for example, five filter assemblies 13 are shown. More or less than five filter elements 13 are also conceivable here. However, it is also conceivable for the filter elements 13 to adjoin one of the side walls 40 of the filter housing 29 or to adjoin both side walls 40 of the filter housing 29.
Furthermore, the overflow 27 of the filter assembly 13 arranged in series in the last is configured such that: if the fluid 35 flows over the overflow edge 25 of the filter assembly 13 which is furthest away from the filter inlet 31, the fluid 35 can flow to the filter outlet 33. It is also conceivable that the filter assembly 13 arranged in series at the end can adjoin one of the side walls of the filter unit 15 and/or adjoin the upper appliance side 12a of the filter unit 15. Furthermore, a window 41 is formed in the region of the appliance base 12b, through which window 41 the user can see inside the filter unit 15: for example whether the filter unit 15 has to be cleaned. The viewing window 41 can however also be formed at another point of the filter unit 15.
In fig. 5, the filter units 15 are arranged in a cascade-like manner. Furthermore, the filter assembly 13 is of arcuate, in this case almost parabolic, design. As shown, these filter elements 13 are interconnected and thus form a filter element aggregate 43, which filter element aggregate 43 comprises a plurality of individual filter elements 13. In fig. 5 four filter assemblies 13 are shown. However, the number of these filter assemblies 13 can vary depending on the desired embodiment and the filtering capacity.
Since the fluid 35 is driven to flow in the filter unit 15 only by gravity, it must be ensured that: fluid 35 exits filter unit 15 through filter outlet 33 after flowing through one or more of plurality of filter assemblies 13.
The overflow 27 (or overflow edge 25) of each filter assembly 13 fulfils the same function as described above (or follows the same principle). Only the arrangement of the filter arrangement 13 and/or the overflow edge 25 and, if appropriate, the possible fixing thereof, will differ from the embodiment explained further above.
Fig. 6 schematically shows the cycle principle of a household appliance 1 for treating laundry, which is depicted in a greatly simplified illustration. The household appliance 1 for treating laundry has a receiving region 47 for items to be cleaned and/or dried, such as laundry or dishes. During the cleaning and/or drying process, the fluid 35 is located in the receiving container 47. During the circulating pumping and/or pumping-out process, the fluid 35 is pumped by means of the pump unit 53 from the receiving container 47 via the discharge opening 49 into the circulating pumping line (or pump-out line) 51.
The pump unit 53 is driven by a drive unit 55, wherein the drive unit 55 is driven (or controlled) by a control unit 57. The drive unit 55 is coupled with the control unit 57 via a transmission element 59. The pump unit 53 pumps the fluid 35 to the filter housing 29 of the filter unit 15, in which filter housing 29 the fluid 35 is filtered. After the filter unit 15, the fluid 35 either flows into the drain 61 and is thrown out of the household appliance 1 or flows via a return line 51a to the inlet 63, which return line 51a leads the fluid 35 back into the receiving region 47 of the household appliance 1. It is also conceivable, however, for the fluid 35 (for example in a washing machine) to be guided through the housing 5 and to be mixed there, for example with detergent and/or softener, before the fluid 35 is fed into the receiving region 47.
List of reference numerals:
1 household appliance
Front wall of washing machine
5 punching into the shell
7 display unit of washing machine
9 washing machine door
11 clean hole cover
12a appliance upper side
12b lower side of the utensil
13 Filter assembly
15 Filter element
17 Filter frame
19 Filter membrane
21 upper filtering area
23 lower filtration zone
25 overflow edge
27 overflow part
29 Filter housing
31 filter inlet
33 filtration outlet
35 fluid
37 filter trace
39 fluid particles
40 side wall
41 window
43 Filter element assembly
47 receiving area
49 discharge port
51 pump-out pipeline
51a return line
53 Pump Unit
55 drive unit
57 control unit
59 transport element
61 drainage part
63 input port
Fluid entry of arrow A
Fluid outflow arrow B
Arrow C fluid spill
Claims (13)
1. A household appliance (1) for treating laundry, comprising:
a bottom (12b) and an upper side (12a) of the appliance,
wherein the appliance upper side (12a) is opposite to the appliance bottom (12 b);
-a pump unit (53) for cyclically pumping and/or pumping out a fluid (35) present in the cleaning and/or drying process;
-a drive unit (55) for substantially driving the pump unit (53);
-a control unit (57) for controlling the drive unit (55);
a filtering unit (15) for filtering the fluid (35),
wherein the filter unit (15) comprises a plurality of filter assemblies (13),
it is characterized in that the preparation method is characterized in that,
the plurality of filter assemblies (13) are arranged in series, and
the plurality of filter assemblies (13) are in fluid communication with each other via at least one overflow (27).
2. Household appliance (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
the filter unit (15) has a filter inlet (31) and a filter outlet (33),
wherein the fluid (35) flows into the filter unit (15) through the filter inlet (31) and the fluid (35) flows along a filter trajectory (37) to the filter outlet (33) and out of the filter unit (15) through the filter outlet (33),
wherein the fluid (35) flows along the filter trajectory (37) substantially by gravity.
3. Household appliance (1) according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the filter unit (15) preferably extends almost from the device top side (12a) up to almost the device bottom (12 b).
4. Household appliance (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the plurality of filter assemblies (13) each having an upper filter region (21) and each having a lower filter region (23),
wherein the upper filter region (21) is arranged in the region of the upper side (12a) of the appliance and the lower filter region (23) is arranged in the region of the bottom (12b) of the appliance, and
wherein in each case one overflow edge (25) of the overflow (27) is formed in the upper filter region (21) and/or in the lower filter region (23).
5. Household appliance (1) according to claim 4,
it is characterized in that the preparation method is characterized in that,
the fluid (35) loads the filter assembly (13) arranged closest to the filter inlet (31),
wherein the plurality of filter assemblies (13) are arranged such that: when the filter element (13) loaded with the fluid (35) is substantially unable to flow through due to the accumulation of fluid particles (39), the fluid (35) flows into the closest filter element (13) via at least one overflow edge (25) of the overflow (27).
6. Household appliance (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the plurality of filter assemblies (13) are of substantially arcuate configuration.
7. Household appliance (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the plurality of filter assemblies (13) are substantially structurally identical on the filter path (37).
8. Household appliance (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the plurality of filter assemblies (13) are arranged in a stepped waterfall manner.
9. Household appliance (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
in the event that all filter assemblies (13) become substantially impermeable to flow through, the fluid (35) flows along a serpentine-shaped filter path (37) into the filter outlet (33).
10. A method for filtering a fluid (35) in a household appliance (1) for treating laundry, the household appliance comprising:
a bottom (12b) and an upper side (12a) of the appliance,
wherein the appliance upper side (12a) is opposite to the appliance bottom (12 b);
-a pump unit (53) for cyclically pumping and/or pumping out a fluid (35) present in the cleaning and/or drying process;
-a drive unit (55) for substantially driving the pump unit (53);
-a control unit (57) for controlling the drive unit (55);
a filtering unit (15) for filtering the fluid (35),
wherein the filter unit (15) comprises a plurality of filter assemblies (13),
it is characterized in that the preparation method is characterized in that,
the plurality of filter assemblies (13) are arranged in series, and
the plurality of filter assemblies (13) are in fluid communication with each other through at least one overflow (27).
11. The method of claim 10, wherein the first and second light sources are selected from the group consisting of,
it is characterized in that the preparation method is characterized in that,
the fluid (35) is pumped by the pump unit (53) to a filter inlet (31), through which the fluid (35) flows into the filter unit (15), so that the fluid (35) flows along a filter track (37) by gravity through the filter unit (15) and loads at least one of the plurality of filter assemblies (13) and flows out of the filter unit (15) in filtered form through a filter outlet (33),
wherein the filter track (37) extends from the filter inlet (31) to the filter outlet (33).
12. The method according to claim 10 or 11,
it is characterized in that the preparation method is characterized in that,
the fluid (35) flows through the filter inlet (31) to the filter assembly (13) arranged closest to the filter inlet (31) and continuously flows through the loaded filter assembly (13) until the filter assembly (13) is substantially unable to flow through.
13. The method according to one of claims 10 to 12,
it is characterized in that the preparation method is characterized in that,
in the event that a filter element (13) becomes substantially impermeable to flow through, the fluid (35) flows via the overflow edge (25) of the overflow (27) to the following filter element (13): the filter assembly is located closest to the filter assembly (13) substantially free of flow therethrough.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019201845.9 | 2019-02-13 | ||
| DE102019201845.9A DE102019201845A1 (en) | 2019-02-13 | 2019-02-13 | Household appliance for treating laundry |
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| CN111560753A true CN111560753A (en) | 2020-08-21 |
| CN111560753B CN111560753B (en) | 2024-03-22 |
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| EP (1) | EP3696311A1 (en) |
| CN (1) | CN111560753B (en) |
| DE (1) | DE102019201845A1 (en) |
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| US11885063B2 (en) | 2021-10-18 | 2024-01-30 | Haier Us Appliance Solutions, Inc. | Microfiber filtration system |
| US11795605B2 (en) | 2022-01-20 | 2023-10-24 | Haier Us Appliance Solutions, Inc. | Washing machine appliance and filtration assembly |
| WO2023237200A1 (en) * | 2022-06-09 | 2023-12-14 | Electrolux Appliances Aktiebolag | Laundry washing machine equipped with a microparticles filter device and method for controlling said machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111560753B (en) | 2024-03-22 |
| DE102019201845A1 (en) | 2020-08-13 |
| EP3696311A1 (en) | 2020-08-19 |
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