EP3741904A1 - Laundry treatment device comprising a pump - Google Patents
Laundry treatment device comprising a pump Download PDFInfo
- Publication number
- EP3741904A1 EP3741904A1 EP20174318.4A EP20174318A EP3741904A1 EP 3741904 A1 EP3741904 A1 EP 3741904A1 EP 20174318 A EP20174318 A EP 20174318A EP 3741904 A1 EP3741904 A1 EP 3741904A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow channel
- pump
- pressure chamber
- pumping
- filter 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.)
- Granted
Links
- 238000005086 pumping Methods 0.000 claims abstract description 145
- 238000005406 washing Methods 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 239000012535 impurity Substances 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 20
- 230000008901 benefit Effects 0.000 description 17
- 230000000717 retained effect Effects 0.000 description 8
- 230000035508 accumulation Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 5
- 230000004913 activation Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000034958 pharyngeal pumping Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000013022 venting Methods 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
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
-
- 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
- D06F39/085—Arrangements or adaptations of pumps
-
- 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
Definitions
- the present invention relates to a laundry care device with a pump.
- Conventional laundry care devices have a pumping system for large loads, through which washing liquid can be pumped out of the tub and then fed back to the tub.
- conventional laundry care devices In order to remove washing liquid from the laundry care device after the laundry care process, conventional laundry care devices also have a pumping system. Pumps are required for the pumping over system and the pumping out system in order to ensure an effective pumping of the washing liquid in the laundry care device or an effective pumping out of the washing liquid from the laundry care device.
- filter elements or foreign body traps are used in conventional laundry care devices to filter the impurities from the washing liquid.
- the object on which the invention is based is to specify a laundry care device with a pump which enables washing liquid to be effectively pumped in the laundry care device.
- the object is achieved by a laundry care device, with a pump for pumping washing liquid, wherein the pump comprises a suction chamber which has a suction nozzle for fluid connection with a suction line, the pump comprising a pumping pressure chamber which has a pumping pressure connection for having fluid-technical connection with a circulation line, wherein the pump comprises a pump-out pressure chamber which has a pump-out pressure connector for fluid connection with a pump-out line, the pump-down pressure chamber and the suction chamber being fluidically connected, the pump-down pressure chamber and the pump-down pressure chamber being fluidically connected, and the pump having a filter element which is received in the pump-down pressure chamber, the filter element having a first Having hollow channel which fluidly connects the pumping pressure chamber to the pumping pressure nozzle, the filter element having a second hollow channel which fluidly connects the pumping pressure chamber to the pumping pressure chamber, the filter element defining a constriction which fluidly connects the first hollow channel and the second hollow channel, the
- the narrowing between the first and second hollow ducts means that impurities are retained by the filter element and that these impurities are therefore not conveyed from the first hollow duct through the second hollow duct into the pumping pressure chamber, so that the impurities during a subsequent Cannot be recirculated during the pumping process.
- the suction chamber, pumping pressure chamber and pumping pressure chamber of the pump are fluidly connected in series so that the washing liquid cannot be conveyed directly from the suction chamber into the pumping pressure chamber, but the washing liquid is conveyed from the suction chamber through the pumping pressure chamber into the pumping pressure chamber. Due to the filter element arranged in the pumping pressure chamber, the washing liquid must first pass through the first hollow channel, the constriction and then the second hollow channel of the filter element before it flows out of the pumping pressure chamber into the pumping pressure chamber, so that the impurities carried along by the washing liquid are effectively filtered at the constriction and thus can be held back.
- washing liquid conveyed by the pump, in particular by a pumping device of the pump, from the suction chamber into the pump-out pressure chamber can be pumped and conveyed through the first hollow channel of the filter element into the pump-out pressure nozzle.
- the second hollow channel of the filter element fluidly connects the first hollow channel to the pumping pressure chamber, so that during a pumping process by the pump, in particular by a pumping device of the pump, washing liquid conveyed is pumped from the suction chamber into the pumping pressure chamber and through the first hollow channel to the constriction between the first hollow channel and the second hollow channel is conveyed, the washing liquid then being conveyed from the constriction through the second hollow channel into the pumping pressure chamber.
- constriction can in particular be formed at least in sections in the filter element itself, or the constriction can in particular be delimited at least in sections by the filter element and a wall of the pump-out pressure chamber.
- the impurities remaining in the pumping-out pressure chamber and retained by the filter element, in particular at the constriction, can be removed from the pump. This can prevent the constriction of the filter element from being clogged by the accumulation of impurities.
- a laundry care device is understood to mean a device which is used for laundry care, e.g. a washing machine or tumble dryer.
- a laundry care device is understood to mean a household laundry care device. So a laundry care device, which is used in the context of housekeeping, and with which laundry is treated in household quantities.
- the first hollow channel and the second hollow channel abut one another at least in sections, and the first hollow channel and the second hollow channel are separated from one another by a channel partition.
- the first hollow channel extends along a first direction of extent from the pump-out pressure chamber to the constriction
- the second hollow channel extends along a second direction of extent from the constriction to the pump-over pressure chamber, the second direction of extent extending at an angle to the first direction of extent .
- the first hollow channel extends straight inside the filter element and / or the second hollow channel extends in a curved manner inside the filter element.
- the second hollow channel has a hollow channel front section which faces the first hollow channel and a hollow channel rear section which faces the pumping pressure chamber, the constriction being arranged between the first hollow channel and the hollow channel front section of the second hollow channel, wherein
- the hollow channel front section extends straight and the hollow channel rear section curved inside the filter element.
- the front hollow channel section extends parallel to the first hollow channel and / or the rear hollow channel section extends at an angle to the first hollow channel.
- the first hollow channel has a first flow cross section and the second hollow channel has a second flow cross section, the second flow cross section being smaller than the first flow cross section.
- the filter element has a first connection piece which delimits the first hollow channel, and the filter element has a second connection piece which delimits the second hollow channel, the first connection piece and the second connection piece being arranged at an angle to one another.
- the constriction is shaped as an annular gap of the filter element, the annular gap running around the first connecting piece at least in sections, and the annular gap fluidically connecting the first hollow channel to the second hollow channel.
- the annular gap is designed as a spiral annular gap, the spiral annular gap running around the first connecting piece in a spiral at least in sections.
- the pump in particular a pumping device of the pump, is designed to convey the washing liquid during a pumping process through the first hollow channel in a first flow direction
- the pump in particular a pumping device of the pump, is designed to convey the washing liquid during a pumping over process to convey through the second hollow channel in a second flow direction
- the filter element in particular the constriction, being designed to deflect washing liquid from the first hollow channel into the second hollow channel during the pumping over process.
- the washing liquid is either conveyed directly through the first hollow channel of the filter element in the first flow direction to the pump-out pressure connection, in particular during a pumping process, or the washing liquid is conveyed through from the first hollow channel, in particular during a pumping over process the constriction and is conveyed through the second hollow channel of the filter element in the second flow direction to the pumping pressure chamber.
- a partition is arranged between the suction chamber and the pump-out pressure chamber in order to delimit the suction chamber from the pump-out pressure chamber, the partition wall having an opening, in particular a central, concentric opening, in order to connect the suction chamber and the pump-out pressure chamber to one another in terms of fluid technology.
- the partition wall ensures an effective delimitation also for foreign bodies and accumulations of hair and lint between the suction chamber and the pumping pressure chamber, whereby the opening enables an effective fluid-technical connection between the suction chamber and the pumping pressure chamber.
- This particularly concentric opening is often implemented as a suction pipe between the suction chamber and the pump-out pressure chamber.
- a further partition is arranged between the pump-out pressure chamber and the pump-over pressure chamber in order to separate the pump-out pressure chamber from the pump-over pressure chamber, the further partition having a further opening in order to connect the pump-down pressure chamber and the pump-over pressure chamber to one another fluidically, in particular the second hollow channel of the filter element is fluidly connected to the further opening.
- the pumping pressure chamber acts as an upstream suction chamber for the pumping pressure chamber.
- the pump has a further filter element which is accommodated in the suction chamber, the further filter element being designed to filter impurities from the washing liquid, the first hollow channel of the filter element arranged in the pump-out pressure chamber being downstream of the filter element in the Suction chamber arranged further filter element is arranged.
- the combination of the further filter element arranged in the suction chamber and the filter element arranged in the pump-out pressure chamber ensures particularly effective filtering of impurities in the washing liquid.
- the further filter element is designed as a foreign body trap for removing contaminants from the washing liquid, the foreign body trap in particular comprising a plate extending in the pumping direction, which in particular has a front edge in the pumping direction, the contaminants being able to accumulate on the front edge or where the Foreign body trap in particular comprises a receiving area for receiving the contaminants.
- the first and second hollow channels each have a semicircular cross section and the first and second hollow channels are arranged at least in sections next to one another in the filter element, or the first and second hollow channels have a circular cross section, the first hollow channel in the second hollow channel is arranged, or the first hollow channel has a circular cross section, and the second hollow channel has a kidney-shaped cross section, wherein the first and second hollow channel are arranged at least partially next to one another in the filter element.
- FIG. 11 shows a schematic view of a general laundry care device 100, such as a washing machine.
- the laundry care device 100 comprises a rinsing bowl 101 into which detergent or other liquid substances can be filled.
- the laundry care device 100 comprises a door 103 for loading the laundry care device 100 with laundry.
- Fig. 2 shows a schematic view of a pump of the laundry care appliance in a sectional illustration.
- the laundry care device 100 comprises a pump 105 for pumping washing liquid.
- the pump 105 is fluidly connected to a suction line to draw in washing liquid through the suction line.
- the pump 105 is connected to a drain line of the laundry care device 100 in order to pump washing liquid out of the laundry care device 100 through the drain line.
- the pump 105 is connected to a circulation line of the laundry care device 100 in order to circulate washing liquid in the laundry care device 100, i.e. to pump out the washing liquid from a tub of the laundry care device 100 through the circulation line, and to supply the pumped out washing liquid to the tub again.
- the suction line, discharge line and circulation line are in Fig. 2 not shown.
- the pump 105 comprises a suction chamber 107, which has a suction nozzle 109, which in turn can be fluidically connected to a suction line.
- the pump 105 further comprises a pump-out pressure chamber 111 which has a pump-out pressure connection 113, which in turn can be fluidically connected to a pump-out line.
- the pump 105 further comprises a pumping pressure chamber 115 which has a pumping pressure connection 117, which in turn can be fluidically connected to a pumping line of a pumping system.
- the suction chamber 107 is fluidically connected to the pump-out pressure chamber 111 by a suction pipe 119. As in Fig. 2 Also shown, the pump-out pressure chamber 111 is also fluidically connected to the pump-around pressure chamber 115, in particular by a further suction pipe 121.
- the pump 105 has a so-called tandem circuit of the pump chambers 107, 111, 115, so that washing liquid sucked in through the suction chamber 107 cannot be fed directly to the pumping pressure chamber 115, but the sucked washing liquid from the suction chamber 107 through the pumping pressure chamber 111 into the Umpumpdruckhunt 115 is promoted.
- a filter element is received in the pump-out pressure chamber 111, which filter element is designed to filter impurities from the washing liquid in order to prevent the impurities from being conveyed into the pump-over pressure chamber 115.
- a further filter element or foreign body trap is accommodated in the suction chamber 107, which is designed to filter impurities from the washing liquid in order to prevent the impurities from being conveyed into the pumping pressure chamber 111 and from the pumping pressure chamber 111 into the pumping pressure chamber 115 will.
- the filter element and the further filter element are in the Fig. 2 not shown.
- the pumping pressure chamber 111 and the pumping pressure chamber 115 are connected in series and the pumping pressure chamber 115 is not directly fluidly connected to the suction chamber 107 .
- the fluidic connection from the upstream suction chamber 107 to the pumping pressure chamber 115 is only possible by flowing through the pumping pressure chamber 111.
- the foreign bodies and larger accumulations of hair and fluff initially remain in the pump-out pressure chamber 111 and are only conveyed out of the pump-out pressure chamber 111 through the pump-out pressure nozzle 113 into the pump-out line from the laundry care device 100 during a subsequent pump-out process.
- FIGS. 3A, 3B, 3C show perspective views of a filter element in a pump of the laundry care device according to a first embodiment.
- the filter element 123 has a first hollow channel 125-1, which in the Figures 3A, 3B and 3C Not shown pumping pressure chamber 111 of the pump 105 fluidly with the in the Figures 3A, 3B and 3C unillustrated pumping pressure connection 113 of the pump 105 connects.
- the filter element 123 has a second hollow channel 125-2 which fluidly connects the first hollow channel 125-1 with that in the Figures 3A, 3B and 3C not shown pumping pressure chamber 115 connects.
- the filter element 123 has a constriction 127 which fluidly connects the first hollow channel 125-1 and the second hollow channel 125-2 and is designed to hold back impurities conveyed in the first hollow channel 125-1 in order to prevent the impurities from passing through the second Hollow channel 125-2 are conveyed into the pumping pressure chamber 115.
- the filter element 123 has a first connecting piece 129-1, which delimits the first hollow channel 125-1, and the filter element 123 has a second connecting piece 129-2, which the second Hollow channel 125-2 limited.
- the first and second connecting pieces 129-1, 129-2 are arranged at an angle, in particular at right angles, to one another.
- the constriction 127 is in particular shaped as an annular gap of the filter element 123, the constriction 127 shaped as an annular gap running around the first connecting stub 129-1 at least in sections, and the annular gap fluidly connecting the first hollow channel 125-1 to the second hollow channel 125-2 .
- the annular gap is designed in particular as a spiral annular gap which at least in sections runs around the first connecting piece 129-1 in a spiral shape.
- the first hollow channel 125-1 has a first flow cross section 131-1
- the second hollow channel 125-2 has a second flow cross section 131-2, the second flow cross section 131-2 being smaller than the first flow cross section 131-1 .
- the pump 105 in particular a pumping device 112-1 of the pump 105, is designed to convey the washing liquid during a pumping process through the first hollow channel 125-1 in a first flow direction 135-1, and is the pump 105, in particular a pumping device 112 -2 of the pump 105, designed to convey the washing liquid through the second hollow channel 125-2 in a second flow direction 135-2 during a pumping over process.
- the filter element 123 in particular the constriction 127, in particular the constriction 127 designed as an annular gap, is designed to divert washing liquid from the first hollow channel 125-1 into the second hollow channel 125-2 during the pumping process.
- the washing liquid thus flows from the first hollow channel 125-1 through the constriction 127 into the second hollow channel 125-2, with impurities carried along by the washing liquid being retained at the constriction 127 and not through the second hollow channel 125-2 into the pumping pressure chamber 115 can be funded.
- FIGS. 4A and 4B show perspective views of a filter element in a pump of the laundry care device according to a second embodiment.
- the filter element 123 is arranged in the pump 105 and shown in a sectional view, whereas in FIG Figure 4B the filter element 123 is shown without the pump 105.
- the filter element 123 is arranged in the pump-out pressure chamber 111 of the pump 105, the pump-out pressure chamber 111 having a suction pipe 119 which is connected to an in the Figure 4A suction chamber 107, not shown, of pump 105 is fluidically connected.
- a partition 139-1 with an opening 141-1, in particular a central, concentric opening 141-1, is arranged between the suction chamber 107 and the pump-out pressure chamber 111 in order to fluidically connect the suction chamber 107 and the pump-out pressure chamber 111 to one another.
- the pump 105 has an in Figure 4A only schematically shown pumping device 112-1, which the washing liquid from the pumping pressure chamber 111 by a in Figure 4A Pumping pressure connection 113, not shown, pumps out.
- the pump 105 also has a pumping pressure chamber 115 which is fluidically connected to the pumping pressure chamber 111.
- a further partition 139-2 is arranged between the pump-out pressure chamber 111 and the pump-over pressure chamber 115 in order to separate the pump-out pressure chamber 111 from the pump-over pressure chamber 115 and to hold back foreign bodies or impurities, the further partition 139-2 having a further opening 141-2, in order to fluidically connect the pump-down pressure chamber 111 and the pump-around pressure chamber 115 to one another.
- the pump 105 has an in Figure 4A only schematically shown pump circulation device 112-2, which conveys the washing liquid from the pump-out pressure chamber 111 into the pump-around pressure chamber 115 and then the washing liquid through an in Figure 4A Umpumpdruckstutzen 117, not shown, is circulated.
- the filter element 123 has a first hollow channel 125 - 1, which in particular extends straight inside the filter element 123.
- the filter element 123 has a second hollow channel 125-2, which extends in particular in a curved manner within the filter element 123.
- the first hollow channel 125-1 extends along a first extension direction 143-1 from the pump-out pressure chamber 111 to a constriction 127, which is arranged between the first hollow channel 125-1 and the second hollow channel 125-2.
- the second hollow channel 125-2 extends along a second direction of extent 143-2 from the constriction 127 to the pumping pressure chamber 115, the second direction of extent 143-2 extending at an angle to the first direction of extent 143-1.
- the first and second hollow channels 125 - 1, 125 - 2 abut one another at least in sections and are separated from one another by a channel partition 145.
- the second hollow channel 125-2 has a hollow channel front section 126-1, which faces the first hollow channel 125-1, and the second hollow channel 125-2 has a hollow channel rear section 126-2, which faces the pumping pressure chamber 115.
- the constriction 127 is arranged between the first hollow channel 125-1 and the hollow channel front section 126-1 of the second hollow channel 125-2.
- the front hollow channel section 126 - 1 extends in particular straight and the rear hollow channel section 126 - 2 extends in particular curved within the filter element 123.
- the front hollow channel section 126-1 extends in particular parallel to the first hollow channel 125-1 and / or the rear hollow channel section 126-2 extends at an angle to the first hollow channel 125-1.
- FIG. 4A shows the constriction 127 of the filter element 123 between the first hollow channel 125-1 and the second hollow channel 125-2, in particular between the first hollow channel 125-1 and the hollow channel front portion 126-1 of the second hollow channel 125-2 arranged to effectively hold back contaminants.
- the pump 105 in particular the pumping device 112-1 of the pump 105, is designed to convey the washing liquid during a pumping process through the first hollow channel 125-1 in a first flow direction 135-1, and is the pump 105, in particular the pumping device 112-2 of the pump 105, designed to convey the washing liquid through the second hollow channel 125-2 in a second flow direction 135-2 during a pumping over process, the filter element 123, in particular the constriction 127, being designed to convey washing liquid out of the first during the pumping over process Divert hollow channel 125-1 into the second hollow channel 125-2.
- the filter element 123 deflects the washing liquid in such a way that the washing liquid can flow through the constriction 127 into the second hollow channel 125-2 and can then be conveyed through the second hollow channel 125-2 in the second flow direction 135-2. In this way, impurities at the constriction 127 can be effectively retained.
- the filter element 123 has in particular at least one fastening section 147, in particular a plurality of fastening sections 147, in order to fasten the filter element 123 in the pumping pressure chamber 111.
- the first and / or second hollow channel 125-1, 125-2 of the filter element 123 has an oval cross section.
- Fig. 5 shows a perspective view of a filter element according to a third embodiment.
- the filter element 123 shown according to the third embodiment corresponds to that in FIG Figure 4B shown filter element 123 according to the second embodiment, except that the cross section of the second hollow channel 125-2 is not oval, but kidney-shaped. This enables a fluid-technically optimized Connection between the first hollow channel 125-1 and the pumping pressure chamber 115 can be ensured.
- FIGS. 6A, 6B and 6C show schematic views of cross-sections of hollow channels in filter elements according to further embodiments.
- the illustrated embodiment of the filter element 123 shows a suction tube with a circular cross section in an inner suction tube with an annular cross section, so that a first hollow channel 125-1 of the filter element 123 is arranged within a second hollow channel 125-2 of the filter element 123.
- the embodiment of the filter element 123 shown is, for example, based on that shown in FIGS Figs. 3A, 3B and 3C Referred to representations of the filter element 123 according to the first embodiment shown.
- the embodiment of the filter element 123 shown here shows two suction pipes with a semicircular cross-section, which are arranged at least in sections next to one another in the filter element 123 so that a first hollow channel 125-1 of the filter element 123 is arranged next to the second hollow channel 125-2 of the filter element 123.
- the illustrated embodiment of the filter element 123 shows a kidney-shaped suction tube which surrounds a circular suction tube, so that a first hollow channel 125-1 of the filter element 123 is arranged next to the second hollow channel 125-2 of the filter element 123.
- the embodiment of the filter element 123 shown is, for example, based on the in Fig. 5 Referring to the representation shown of the filter element 123 according to the third embodiment.
- a decisive advantage of the embodiments of the present disclosure consists in the use of the pumping pressure chamber 111 as a prefilter for the pumping pressure chamber 115, with the constriction 127 being able to adjust the foreign body tolerance of the pumping device 112-2. Especially the 180 ° deflection of the Flow guidance in the filter element 123 through the first and second hollow channels 125-1, 125-2 enables foreign bodies to be retained within the pump-out pressure chamber 111, which can then be pumped out later in a further process step.
- the hydraulic pump characteristics in particular the ratio of the pressure to the delivery flow, can also be influenced when both pump drives of the pumping system are activated.
- the suction pressure is reduced in front of and in the common suction chamber 107, with the delivery flow almost doubling there, whereas the delivery flows at the pump-out pressure connection 113 and the pump-over pressure connection 117 remain almost unaffected.
- a pump 105 ventilated via suction chamber 107 can ventilate more quickly through the simultaneous activation of both pumping devices 112-1, 112-2 of pump 105 and also realize the delivery flow build-up accelerated to the nominal pump delivery flow.
- the pumping device 112-2 downstream in the chain of action, in particular the circulation pump, can help to accelerate the venting process of the pumping device 112-1 and thus the initial pressure build-up for the pump-out device 112-1, in particular the emptying pump, by briefly activating it during the start-up to generate the flow rate build-up faster.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Wäschepflegegerät (100) mit einer Pumpe (105) zum Pumpen von Waschflüssigkeit, wobei die Pumpe (105) eine Saugkammer (107) umfasst, welche einen Saugstutzen (109) zum fluidtechnischen Verbinden mit einer Saugleitung aufweist, wobei die Pumpe (105) eine Umpumpdruckkammer (115) umfasst, welche einen Umpumpdruckstutzen (117) zum fluidtechnischen Verbinden mit einer Umpumpleitung aufweist, wobei die Pumpe (105) eine Abpumpdruckkammer (111) umfasst, welche einen Abpumpdruckstutzen (113) zum fluidtechnischen Verbinden mit einer Abpumpleitung aufweist, wobei die Abpumpdruckkammer (111) und die Saugkammer (107) fluidtechnisch verbunden sind, wobei die Abpumpdruckkammer (111) und die Umpumpdruckkammer (115) fluidtechnisch verbunden sind, und wobei die Pumpe (105) ein Filterelement (123) aufweist, welches in der Abpumpdruckkammer (111) aufgenommen ist, wobei das Filterelement (123) einen ersten Hohlkanal (125-1) aufweist, welcher die Abpumpdruckkammer (111) fluidtechnisch mit dem Abpumpdruckstutzen (113) verbindet, wobei das Filterelement (123) einen zweiten Hohlkanal (125-2) aufweist, welcher die Abpumpdruckkammer (111) fluidtechnisch mit der Umpumpdruckkammer (115) verbindet, wobei das Filterelement (123) eine Verengung (127) definiert, welche den ersten Hohlkanal (125-1) und den zweiten Hohlkanal (125-2) fluidtechnisch verbindet, wobei die Verengung (127) ausgebildet ist, in dem ersten Hohlkanal (125-1) geförderte Verunreinigungen zurückhalten, um zu verhindern, dass die Verunreinigungen durch den zweiten Hohlkanal (125-2) in die Umpumpdruckkammer (115) gefördert werden.The present invention relates to a laundry care device (100) with a pump (105) for pumping washing liquid, the pump (105) comprising a suction chamber (107) which has a suction nozzle (109) for fluid connection with a suction line, the pump (105) comprises a pumping pressure chamber (115) which has a pumping pressure connection (117) for fluid connection with a pumping line, the pump (105) comprising a pumping pressure chamber (111) which has a pumping pressure connection (113) for fluid connection with a pumping line , wherein the pumping pressure chamber (111) and the suction chamber (107) are fluidically connected, the pumping pressure chamber (111) and the pumping pressure chamber (115) are fluidically connected, and the pump (105) has a filter element (123) which is in the Pump-out pressure chamber (111) is added, wherein the filter element (123) has a first hollow channel (125-1), which the pump-out pressure chamber (111) fluidly connects to the pumping pressure connection (113), the filter element (123) having a second hollow channel (125-2) which fluidly connects the pumping pressure chamber (111) to the pumping pressure chamber (115), the filter element (123) having a constriction (127 ) which fluidly connects the first hollow channel (125-1) and the second hollow channel (125-2), the constriction (127) being designed to hold back impurities conveyed in the first hollow channel (125-1) in order to prevent, that the impurities are conveyed through the second hollow channel (125-2) into the pumping pressure chamber (115).
Description
Die vorliegende Erfindung betrifft ein Wäschepflegegerät mit einer Pumpe.The present invention relates to a laundry care device with a pump.
Herkömmliche Wäschepflegegeräte weisen für große Beladungsmengen ein Umpumpsystem auf, durch welches Waschflüssigkeit aus dem Laugenbehälter abgepumpt und dem Laugenbehälter anschließend erneut zugeführt werden kann. Um Waschflüssigkeit nach dem Wäschepflegeprozess aus dem Wäschepflegegerät zu entfernen, verfügen herkömmliche Wäschepflegegeräte zudem über ein Abpumpsystem. Für das Umpumpsystem und das Abpumpsystem werden Pumpen benötigt, um ein wirksames Umpumpen der Waschflüssigkeit in dem Wäschepflegegerät, bzw. ein wirksames Abpumpen der Waschflüssigkeit aus dem Wäschepflegegerät zu gewährleisten.Conventional laundry care devices have a pumping system for large loads, through which washing liquid can be pumped out of the tub and then fed back to the tub. In order to remove washing liquid from the laundry care device after the laundry care process, conventional laundry care devices also have a pumping system. Pumps are required for the pumping over system and the pumping out system in order to ensure an effective pumping of the washing liquid in the laundry care device or an effective pumping out of the washing liquid from the laundry care device.
Da in der Waschflüssigkeit eine Vielzahl von Verunreinigungen, wie z.B. Fremdkörper, Haare oder Flusen vorhanden sind, die durch die Pumpe gepumpt werden, werden in herkömmlichen Wäschepflegegeräten Filterelemente, bzw. Fremdkörperfallen, verwendet, um die Verunreinigungen aus der Waschflüssigkeit zu filtern.Since a large number of impurities, such as e.g. If there are foreign bodies, hair or fluff that are pumped through the pump, filter elements or foreign body traps are used in conventional laundry care devices to filter the impurities from the washing liquid.
Es ist die der Erfindung zugrundeliegende Aufgabe, ein Wäschepflegegerät mit einer Pumpe anzugeben, welche ein wirksames Pumpen von Waschflüssigkeit in dem Wäschepflegegerät ermöglicht.The object on which the invention is based is to specify a laundry care device with a pump which enables washing liquid to be effectively pumped in the laundry care device.
Diese Aufgabe wird durch den Gegenstand mit den Merkmalen nach dem unabhängigen Anspruch gelöst. Vorteilhafte Ausführungsformen der Erfindung sind Gegenstand der Figuren, der Beschreibung und der abhängigen Ansprüche.This object is achieved by the subject matter with the features according to the independent claim. Advantageous embodiments of the invention are the subject matter of the figures, the description and the dependent claims.
Gemäß einem Aspekt der Erfindung wird die Aufgabe durch ein Wäschepflegegerät gelöst, mit einer Pumpe zum Pumpen von Waschflüssigkeit, wobei die Pumpe eine Saugkammer umfasst, welche einen Saugstutzen zum fluidtechnischen Verbinden mit einer Saugleitung aufweist, wobei die Pumpe eine Umpumpdruckkammer umfasst, welche einen Umpumpdruckstutzen zum fluidtechnischen Verbinden mit einer Umpumpleitung aufweist, wobei die Pumpe eine Abpumpdruckkammer umfasst, welche einen Abpumpdruckstutzen zum fluidtechnischen Verbinden mit einer Abpumpleitung aufweist, wobei die Abpumpdruckkammer und die Saugkammer fluidtechnisch verbunden sind, wobei die Abpumpdruckkammer und die Umpumpdruckkammer fluidtechnisch verbunden sind, und wobei die Pumpe ein Filterelement aufweist, welches in der Abpumpdruckkammer aufgenommen ist, wobei das Filterelement einen ersten Hohlkanal aufweist, welcher die Abpumpdruckkammer fluidtechnisch mit dem Abpumpdruckstutzen verbindet, wobei das Filterelement einen zweiten Hohlkanal aufweist, welcher die Abpumpdruckkammer fluidtechnisch mit der Umpumpdruckkammer verbindet, wobei das Filterelement eine Verengung definiert, welche den ersten Hohlkanal und den zweiten Hohlkanal fluidtechnisch verbindet, wobei die Verengung ausgebildet ist, in dem ersten Hohlkanal geförderte Verunreinigungen zurückhalten, um zu verhindern, dass die Verunreinigungen durch den zweiten Hohlkanal in die Umpumpdruckkammer gefördert werden.According to one aspect of the invention, the object is achieved by a laundry care device, with a pump for pumping washing liquid, wherein the pump comprises a suction chamber which has a suction nozzle for fluid connection with a suction line, the pump comprising a pumping pressure chamber which has a pumping pressure connection for having fluid-technical connection with a circulation line, wherein the pump comprises a pump-out pressure chamber which has a pump-out pressure connector for fluid connection with a pump-out line, the pump-down pressure chamber and the suction chamber being fluidically connected, the pump-down pressure chamber and the pump-down pressure chamber being fluidically connected, and the pump having a filter element which is received in the pump-down pressure chamber, the filter element having a first Having hollow channel which fluidly connects the pumping pressure chamber to the pumping pressure nozzle, the filter element having a second hollow channel which fluidly connects the pumping pressure chamber to the pumping pressure chamber, the filter element defining a constriction which fluidly connects the first hollow channel and the second hollow channel, the constriction is designed to hold back impurities conveyed in the first hollow channel in order to prevent the impurities from being conveyed through the second hollow channel into the pumping pressure chamber.
Dadurch wird der technische Vorteil erreicht, dass durch die Verengung zwischen dem ersten und zweiten Hohlkanal Verunreinigungen durch das Filterelement zurückgehalten werden und diese Verunreinigungen somit nicht von dem ersten Hohlkanal durch den zweiten Hohlkanal in die Umpumpdruckkammer gefördert werden, so dass die Verunreinigungen während eines sich anschließenden Umpumpvorgangs nicht erneut umgepumpt werden.This achieves the technical advantage that the narrowing between the first and second hollow ducts means that impurities are retained by the filter element and that these impurities are therefore not conveyed from the first hollow duct through the second hollow duct into the pumping pressure chamber, so that the impurities during a subsequent Cannot be recirculated during the pumping process.
Gemäß der vorliegenden Offenbarung sind die Saugkammer, Abpumpdruckkammer und Umpumpdruckkammer der Pumpe fluidtechnisch in Reihe geschaltet, so das Waschflüssigkeit aus der Saugkammer nicht direkt in die Umpumpdruckkammer gefördert werden kann, sondern die Waschflüssigkeit von der Saugkammer durch die Abpumpdruckkammer in die Umpumpdruckkammer gefördert wird. Durch das in der Abpumpdruckkammer angeordnete Filterelement muss die Waschflüssigkeit, bevor diese aus der Abpumpdruckkammer in die Umpumpdruckkammer strömt, zuerst den ersten Hohlkanal, die Verengung und anschließend den zweiten Hohlkanal des Filterelements passieren, so dass die durch die Waschflüssigkeit mitgeführten Verunreinigungen an der Verengung wirksam gefiltert und damit zurückgehalten werden können.According to the present disclosure, the suction chamber, pumping pressure chamber and pumping pressure chamber of the pump are fluidly connected in series so that the washing liquid cannot be conveyed directly from the suction chamber into the pumping pressure chamber, but the washing liquid is conveyed from the suction chamber through the pumping pressure chamber into the pumping pressure chamber. Due to the filter element arranged in the pumping pressure chamber, the washing liquid must first pass through the first hollow channel, the constriction and then the second hollow channel of the filter element before it flows out of the pumping pressure chamber into the pumping pressure chamber, so that the impurities carried along by the washing liquid are effectively filtered at the constriction and thus can be held back.
Während eines Abpumpvorgangs kann durch die Pumpe, insbesondere durch eine Abpumpvorrichtung der Pumpe, geförderte Waschflüssigkeit von der Saugkammer aus in die Abpumpdruckkammer gepumpt werden, und durch den ersten Hohlkanal des Filterelements in den Abpumpdruckstutzen gefördert werden.During a pumping process, washing liquid conveyed by the pump, in particular by a pumping device of the pump, from the suction chamber into the pump-out pressure chamber can be pumped and conveyed through the first hollow channel of the filter element into the pump-out pressure nozzle.
Der zweite Hohlkanal des Filterelements verbindet den ersten Hohlkanal fluidtechnisch mit der Umpumpdruckkammer, so dass während eines Umpumpvorgangs durch die Pumpe, insbesondere durch eine Umpumpvorrichtung der Pumpe, geförderte Waschflüssigkeit von der Saugkammer aus in die Abpumpdruckkammer gepumpt wird und durch den ersten Hohlkanal zu der Verengung zwischen dem ersten Hohlkanal und dem zweiten Hohlkanal gefördert wird, wobei die Waschflüssigkeit anschließend von der Verengung durch den zweiten Hohlkanal in die Umpumpdruckkammer gefördert wird.The second hollow channel of the filter element fluidly connects the first hollow channel to the pumping pressure chamber, so that during a pumping process by the pump, in particular by a pumping device of the pump, washing liquid conveyed is pumped from the suction chamber into the pumping pressure chamber and through the first hollow channel to the constriction between the first hollow channel and the second hollow channel is conveyed, the washing liquid then being conveyed from the constriction through the second hollow channel into the pumping pressure chamber.
Hierbei kann die Verengung insbesondere zumindest abschnittsweise in dem Filterelement selbst gebildet sein, oder kann die Verengung insbesondere zumindest abschnittsweise durch das Filterelement und eine Wandung der Abpumpdruckkammer begrenzt sein.Here, the constriction can in particular be formed at least in sections in the filter element itself, or the constriction can in particular be delimited at least in sections by the filter element and a wall of the pump-out pressure chamber.
Bei einem zeitlich nachgeschalteten Abpumpvorgang können die in der Abpumpdruckkammer verbleibenden, durch das Filterelement, insbesondere an der Verengung, zurückgehaltenen Verunreinigungen aus der Pumpe entfernt werden. Dadurch kann ein Verstopfen der Verengung des Filterelements durch die Ansammlung von Verunreinigungen verhindert werden.In the case of a subsequent pumping-out process, the impurities remaining in the pumping-out pressure chamber and retained by the filter element, in particular at the constriction, can be removed from the pump. This can prevent the constriction of the filter element from being clogged by the accumulation of impurities.
Unter einem Wäschepflegegerät wird ein Gerät verstanden, welches zur Wäschepflege eingesetzt wird, wie z.B. eine Waschmaschine oder ein Wäschetrockner. Insbesondere wird unter solch einem Wäschepflegegerät ein Haushaltswäschepflegegerät verstanden. Also ein Wäschepflegegerät, welches im Rahmen der Haushaltsführung verwendet wird, und mit dem Wäsche in haushaltsüblichen Mengen behandelt wird.A laundry care device is understood to mean a device which is used for laundry care, e.g. a washing machine or tumble dryer. In particular, such a laundry care device is understood to mean a household laundry care device. So a laundry care device, which is used in the context of housekeeping, and with which laundry is treated in household quantities.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts liegen der erste Hohlkanal und der zweite Hohlkanal zumindest abschnittsweise aneinander an, und sind der erste Hohlkanal und der zweite Hohlkanal durch eine Kanaltrennwand voneinander getrennt.In an advantageous embodiment of the laundry care device, the first hollow channel and the second hollow channel abut one another at least in sections, and the first hollow channel and the second hollow channel are separated from one another by a channel partition.
Dadurch wird der technische Vorteil erreicht, dass durch das zumindest abschnittsweise Anliegen der beiden Hohlkanäle eine kompakte Anordnung des Filterelements sichergestellt wird, und dass durch die Kanaltrennwand eine wirksame Abgrenzung der beiden Hohlkanäle erreicht wird.This achieves the technical advantage that a compact arrangement of the filter element is ensured due to the at least section-wise contact of the two hollow channels and that an effective delimitation of the two hollow channels is achieved by the channel partition.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts erstreckt sich der erste Hohlkanal entlang einer ersten Erstreckungsrichtung von der Abpumpdruckkammer zu der Verengung, und erstreckt sich der zweite Hohlkanal entlang einer zweiten Erstreckungsrichtung von der Verengung zu der Umpumpdruckkammer, wobei sich die zweite Erstreckungsrichtung winklig zu der ersten Erstreckungsrichtung erstreckt.In an advantageous embodiment of the laundry care device, the first hollow channel extends along a first direction of extent from the pump-out pressure chamber to the constriction, and the second hollow channel extends along a second direction of extent from the constriction to the pump-over pressure chamber, the second direction of extent extending at an angle to the first direction of extent .
Dadurch wird der technische Vorteil erreicht, dass durch die unterschiedlichen Erstreckungsrichtungen des ersten und zweiten Hohlkanals an der Verengung zwischen dem ersten und zweiten Hohlkanal ein wirksames Umlenken der durch die Pumpe geförderten Waschflüssigkeit sichergestellt werden kann.This achieves the technical advantage that the different directions of extension of the first and second hollow channels at the constriction between the first and second hollow channels ensure that the washing liquid conveyed by the pump is effectively deflected.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts erstreckt sich der erste Hohlkanal gerade innerhalb des Filterelements, und/oder erstreckt sich der zweite Hohlkanal gekrümmt innerhalb des Filterelements.In an advantageous embodiment of the laundry care device, the first hollow channel extends straight inside the filter element and / or the second hollow channel extends in a curved manner inside the filter element.
Dadurch wird der technische Vorteil erreicht, dass durch die gerade Erstreckung des ersten Hohlkanals während eines Abpumpvorgangs ein wirksames Zuführen der Waschflüssigkeit zu dem Abpumpdruckstutzen sichergestellt werden kann. Durch die gekrümmte Erstreckung des zweiten Hohlkanals innerhalb des Filterelements kann durch den zweiten Hohlkanal ein räumlich optimierte fluidtechnische Verbindung zwischen dem ersten Hohlkanal und der Umpumpdruckkammer sichergestellt werden.This achieves the technical advantage that the straight extension of the first hollow channel ensures that the washing liquid is effectively supplied to the pump-out pressure connection during a pumping-out process. Due to the curved extension of the second hollow channel within the filter element, a spatially optimized fluid-technical connection between the first hollow channel and the pumping pressure chamber can be ensured through the second hollow channel.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts weist der zweite Hohlkanal einen Hohlkanalvorderabschnitt auf, welcher dem ersten Hohlkanal zugewandt ist, und einen Hohlkanalhinterabschnitt, welcher der Umpumpdruckkammer zugewandt ist, auf, wobei die Verengung zwischen dem ersten Hohlkanal und dem Hohlkanalvorderabschnitt des zweiten Hohlkanals angeordnet ist, wobei sich insbesondere der Hohlkanalvorderabschnitt gerade und der Hohlkanalhinterabschnitt gekrümmt innerhalb des Filterelements erstreckt.In an advantageous embodiment of the laundry care device, the second hollow channel has a hollow channel front section which faces the first hollow channel and a hollow channel rear section which faces the pumping pressure chamber, the constriction being arranged between the first hollow channel and the hollow channel front section of the second hollow channel, wherein In particular, the hollow channel front section extends straight and the hollow channel rear section curved inside the filter element.
Dadurch wird der technische Vorteil erreicht, dass an der Verengung zwischen dem ersten Hohlkanal und dem Hohlkanalvorderabschnitt des zweiten Hohlkanals besonders vorteilhaft Verunreinigungen zurückgehalten werden können.This achieves the technical advantage that contaminants can particularly advantageously be retained at the constriction between the first hollow channel and the hollow channel front section of the second hollow channel.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts erstreckt sich der Hohlkanalvorderabschnitt parallel zu dem ersten Hohlkanal und/oder erstreckt sich der Hohlkanalhinterabschnitt winklig zu dem ersten Hohlkanal.In an advantageous embodiment of the laundry care device, the front hollow channel section extends parallel to the first hollow channel and / or the rear hollow channel section extends at an angle to the first hollow channel.
Dadurch wird der technische Vorteil erreicht, dass durch die parallele Erstreckung des Hohlkanalvorderabschnitts des zweiten Hohlkanals zu dem ersten Hohlkanal an der Verengung, welche zwischen dem ersten Hohlkanal und dem Hohlkanalvorderabschnitt des zweiten Hohlkanals angeordnet ist, eine 180° Umlenkung der durch die Verengung geförderten Waschflüssigkeit ermöglicht werden kann, wodurch ein besonders wirksames Zurückhalten von Verunreinigungen an der Verengung sichergestellt werden kann.This achieves the technical advantage that the parallel extension of the hollow channel front section of the second hollow channel to the first hollow channel at the constriction, which is arranged between the first hollow channel and the hollow channel front section of the second hollow channel, enables a 180 ° deflection of the washing liquid conveyed through the constriction can be, whereby a particularly effective retention of impurities at the constriction can be ensured.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts weist der erste Hohlkanal einen ersten Strömungsquerschnitt auf, und weist der zweite Hohlkanal einen zweiten Strömungsquerschnitt auf, wobei der zweite Strömungsquerschnitt geringer als der erste Strömungsquerschnitt ist.In an advantageous embodiment of the laundry care appliance, the first hollow channel has a first flow cross section and the second hollow channel has a second flow cross section, the second flow cross section being smaller than the first flow cross section.
Dadurch wird der technische Vorteil erreicht, dass durch den im Vergleich zum zweiten Strömungsquerschnitt des zweiten Hohlkanals größeren ersten Strömungsquerschnitt des ersten Hohlkanals während eines Abpumpvorgangs eine große Menge an Waschflüssigkeit durch den Abpumpdruckstutzen der Pumpe abgepumpt werden kann.This achieves the technical advantage that the larger first flow cross section of the first hollow channel compared to the second flow cross section of the second hollow channel allows a large amount of washing liquid to be pumped out through the pump discharge pressure port during a pumping process.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts weist das Filterelement einen ersten Verbindungsstutzen auf, welcher den ersten Hohlkanal begrenzt, und weist das Filterelement einen zweiten Verbindungsstutzen auf, welcher den zweiten Hohlkanal begrenzt, wobei der erste Verbindungsstutzen und der zweite Verbindungsstutzen winklig zueinander angeordnet sind.In an advantageous embodiment of the laundry care device, the filter element has a first connection piece which delimits the first hollow channel, and the filter element has a second connection piece which delimits the second hollow channel, the first connection piece and the second connection piece being arranged at an angle to one another.
Dadurch wird der technische Vorteil erreicht, dass durch die winklige Anordnung des ersten und des zweiten Verbindungsstutzens eine wirksame fluidtechnische Verbindung zwischen dem Filterelement und dem Abpumpdruckstutzen, bzw. der Umpumpdruckkammer erreicht werden kann.This achieves the technical advantage that the angled arrangement of the first and second connecting pieces creates an effective fluidic connection can be achieved between the filter element and the pumping pressure connection or the pumping pressure chamber.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts ist die Verengung als ein Ringspalt des Filterelements geformt, wobei der Ringspalt den ersten Verbindungsstutzen zumindest abschnittsweise umläuft, und wobei der Ringspalt den ersten Hohlkanal mit dem zweiten Hohlkanal fluidtechnisch verbindet.In an advantageous embodiment of the laundry care device, the constriction is shaped as an annular gap of the filter element, the annular gap running around the first connecting piece at least in sections, and the annular gap fluidically connecting the first hollow channel to the second hollow channel.
Dadurch wird der technische Vorteil erreicht, dass durch das Ausbilden der Verengung als einen den ersten Verbindungsstutzen zumindest abschnittsweise umlaufenden Ringspalt bei einem Umpumpen der Waschflüssigkeit Verunreinigungen durch den Ringspalt wirksam zurückgehalten werden können und nicht durch den zweiten Hohlkanal in die Umpumpdruckkammer gefördert werden.This achieves the technical advantage that, when the washing liquid is pumped around, impurities can be effectively retained through the annular gap by forming the constriction as an annular gap surrounding the first connection stub at least in sections and are not conveyed through the second hollow channel into the pumped circulation pressure chamber.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts ist der Ringspalt als ein spiralförmiger Ringspalt ausgebildet, wobei der spiralförmige Ringspalt den ersten Verbindungsstutzen zumindest abschnittsweise spiralförmig umläuft.In an advantageous embodiment of the laundry care device, the annular gap is designed as a spiral annular gap, the spiral annular gap running around the first connecting piece in a spiral at least in sections.
Dadurch wird der technische Vorteil erreicht, dass der spiralförmige Ringspalt eine wirksame Strömungsquerschnittsverengung sicherstellt, so dass die durch die Waschflüssigkeit mitgeführten Verunreinigungen den spiralförmigen Ringspalt während eines Umpumpvorgangs nicht passieren können und aus diesem Grund wirksam zurückgehalten werden.This has the technical advantage that the spiral-shaped annular gap ensures an effective flow cross-sectional constriction, so that the impurities carried along by the washing liquid cannot pass through the spiral-shaped annular gap during a pumping process and are therefore effectively retained.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts ist die Pumpe, insbesondere eine Abpumpvorrichtung der Pumpe, ausgebildet die Waschflüssigkeit während eines Abpumpvorgangs durch den ersten Hohlkanal in einer ersten Strömungsrichtung zu fördern, und ist die Pumpe, insbesondere eine Umpumpvorrichtung der Pumpe, ausgebildet die Waschflüssigkeit während eines Umpumpvorgangs durch den zweiten Hohlkanal in einer zweiten Strömungsrichtung zu fördern, wobei das Filterelement, insbesondere die Verengung, ausgebildet ist, während des Umpumpvorgangs Waschflüssigkeit aus dem ersten Hohlkanal in den zweiten Hohlkanal umzulenken.In an advantageous embodiment of the laundry care device, the pump, in particular a pumping device of the pump, is designed to convey the washing liquid during a pumping process through the first hollow channel in a first flow direction, and the pump, in particular a pumping device of the pump, is designed to convey the washing liquid during a pumping over process to convey through the second hollow channel in a second flow direction, the filter element, in particular the constriction, being designed to deflect washing liquid from the first hollow channel into the second hollow channel during the pumping over process.
Dadurch wird der technische Vorteil erreicht, dass je nach Betriebssituation der Pumpe die Waschflüssigkeit insbesondere während eines Abpumpvorgangs entweder direkt durch den ersten Hohlkanal des Filterelements in der ersten Strömungsrichtung zu dem Abpumpdruckstutzen gefördert wird, oder die Waschflüssigkeit insbesondere während eines Umpumpvorgangs von dem ersten Hohlkanal aus durch die Verengung und durch den zweiten Hohlkanal des Filterelements in der zweiten Strömungsrichtung zu der Umpumpdruckkammer gefördert wird.This achieves the technical advantage that, depending on the operating situation of the pump, the washing liquid is either conveyed directly through the first hollow channel of the filter element in the first flow direction to the pump-out pressure connection, in particular during a pumping process, or the washing liquid is conveyed through from the first hollow channel, in particular during a pumping over process the constriction and is conveyed through the second hollow channel of the filter element in the second flow direction to the pumping pressure chamber.
In einer vorteilhaften Ausführungsform des Wäschepflegegeräts ist zwischen der Saugkammer und der Abpumpdruckkammer eine Trennwand angeordnet, um die Saugkammer von der Abpumpdruckkammer abzugrenzen, wobei die Trennwand eine Öffnung, insbesondere zentrale, konzentrische Öffnung, aufweist, um die Saugkammer und die Abpumpdruckkammer miteinander fluidtechnisch zu verbinden.In an advantageous embodiment of the laundry care device, a partition is arranged between the suction chamber and the pump-out pressure chamber in order to delimit the suction chamber from the pump-out pressure chamber, the partition wall having an opening, in particular a central, concentric opening, in order to connect the suction chamber and the pump-out pressure chamber to one another in terms of fluid technology.
Dadurch wird der technische Vorteil erreicht, dass durch die Trennwand eine wirksame Abgrenzung auch für Fremdkörper und Haar- und Flusen-Anhäufungen zwischen der Saugkammer und Abpumpdruckkammer sichergestellt wird, wobei durch die Öffnung eine wirksame fluidtechnische Verbindung zwischen der Saugkammer und der Abpumpdruckkammer ermöglicht wird. Diese insbesondere konzentrische Öffnung wird oftmals als Saugrohr zwischen Saugkammer und Abpumpdruckkammer realisiert.This has the technical advantage that the partition wall ensures an effective delimitation also for foreign bodies and accumulations of hair and lint between the suction chamber and the pumping pressure chamber, whereby the opening enables an effective fluid-technical connection between the suction chamber and the pumping pressure chamber. This particularly concentric opening is often implemented as a suction pipe between the suction chamber and the pump-out pressure chamber.
In einer weiteren vorteilhaften Ausführungsform des Wäschepflegegeräts ist zwischen der Abpumpdruckkammer und der Umpumpdruckkammer eine weitere Trennwand angeordnet, um die Abpumpdruckkammer von der Umpumpdruckkammer abzugrenzen, wobei die weitere Trennwand eine weitere Öffnung aufweist, um die Abpumpdruckkammer und die Umpumpdruckkammer miteinander fluidtechnisch zu verbinden, wobei insbesondere der zweite Hohlkanal des Filterelements mit der weiteren Öffnung fluidtechnisch verbunden ist.In a further advantageous embodiment of the laundry care device, a further partition is arranged between the pump-out pressure chamber and the pump-over pressure chamber in order to separate the pump-out pressure chamber from the pump-over pressure chamber, the further partition having a further opening in order to connect the pump-down pressure chamber and the pump-over pressure chamber to one another fluidically, in particular the second hollow channel of the filter element is fluidly connected to the further opening.
Dadurch wird der technische Vorteil erreicht, dass z.B. durch die weitere Trennwand mit der weiteren Öffnung eine wirksame fluidtechnische Verbindung zwischen der Abpumpdruckkammer und der Umpumpdruckkammer ermöglicht wird. Hierbei fungiert die Abpumpdruckkammer als vorgeschaltete Saugkammer für die Umpumpdruckkammer.This achieves the technical advantage that, for example, an effective fluid-technical connection between the pump-out pressure chamber and the pump-over pressure chamber is made possible through the further partition with the further opening. The pumping pressure chamber acts as an upstream suction chamber for the pumping pressure chamber.
In einer weiteren vorteilhaften Ausführungsform des Wäschepflegegeräts weist die Pumpe ein weiteres Filterelement auf, welches in der Saugkammer aufgenommen ist, wobei das weitere Filterelement ausgebildet ist, Verunreinigungen aus der Waschflüssigkeit zu filtern, wobei der erste Hohlkanal des in der Abpumpdruckkammer angeordneten Filterelements stromabwärts des in der Saugkammer angeordneten weiteren Filterelements angeordnet ist.In a further advantageous embodiment of the laundry care device, the pump has a further filter element which is accommodated in the suction chamber, the further filter element being designed to filter impurities from the washing liquid, the first hollow channel of the filter element arranged in the pump-out pressure chamber being downstream of the filter element in the Suction chamber arranged further filter element is arranged.
Dadurch wird der technische Vorteil erreicht, dass durch die Kombination des in der Saugkammer angeordneten weiteren Filterelements und des in der Abpumpdruckkammer angeordneten Filterelements eine besonders wirksame Filterung von Verunreinigungen der Waschflüssigkeit sichergestellt werden kann. Insbesondere ist das weitere Filterelement als eine Fremdkörperfalle zum Entfernen von Verunreinigungen aus der Waschflüssigkeit ausgebildet, wobei die Fremdkörperfalle insbesondere eine sich in Pumprichtung erstreckende Platte umfasst, welche insbesondere eine in Pumprichtung vordere Kante aufweist, wobei die Verunreinigungen an der vorderen Kante anlagerbar sind oder wobei die Fremdkörperfalle insbesondere einen Aufnahmebereich zur Aufnahme der Verunreinigungen umfasst.This achieves the technical advantage that the combination of the further filter element arranged in the suction chamber and the filter element arranged in the pump-out pressure chamber ensures particularly effective filtering of impurities in the washing liquid. In particular, the further filter element is designed as a foreign body trap for removing contaminants from the washing liquid, the foreign body trap in particular comprising a plate extending in the pumping direction, which in particular has a front edge in the pumping direction, the contaminants being able to accumulate on the front edge or where the Foreign body trap in particular comprises a receiving area for receiving the contaminants.
In einer weiteren vorteilhaften Ausführungsform des Wäschepflegegeräts weisen der erste und zweite Hohlkanal jeweils einen halbkreisförmigen Querschnitt auf und sind der erste und zweite Hohlkanal zumindest abschnittsweise nebeneinander in dem Filterelement angeordnet, oder weisen der erste und zweite Hohlkanal einen kreisförmigen Querschnitt auf, wobei der erste Hohlkanal in dem zweiten Hohlkanal angeordnet ist, oder weist der erste Hohlkanal einen kreisförmigen Querschnitt, und der zweite Hohlkanal einen nierenförmigen Querschnitt auf, wobei der erste und zweite Hohlkanal zumindest abschnittsweise nebeneinander in dem Filterelement angeordnet sind.In a further advantageous embodiment of the laundry care device, the first and second hollow channels each have a semicircular cross section and the first and second hollow channels are arranged at least in sections next to one another in the filter element, or the first and second hollow channels have a circular cross section, the first hollow channel in the second hollow channel is arranged, or the first hollow channel has a circular cross section, and the second hollow channel has a kidney-shaped cross section, wherein the first and second hollow channel are arranged at least partially next to one another in the filter element.
Dadurch wird der technische Vorteil erreicht, dass durch die unterschiedlichen Querschnitte, bzw. Geometrien des ersten und zweiten Hohlkanals innerhalb des Filterelements eine besonders wirksame Fluidführung in dem Filterelement sichergestellt werden kann.This achieves the technical advantage that the different cross-sections or geometries of the first and second hollow channels within the filter element can ensure particularly effective fluid guidance in the filter element.
Weitere Ausführungsbeispiele werden Bezug nehmend auf die beiliegenden Zeichnungen erläutert. Es zeigen:
- Fig. 1
- eine schematische Ansicht eines Wäschepflegegeräts;
- Fig. 2
- eine schematische Ansicht einer Pumpe des Wäschepflegeräts in Schnittdarstellung;
- Figs. 3A, 3B, 3C
- perspektivische Ansichten eines Filterelements in einer Pumpe des Wäschepflegegeräts gemäß einer ersten Ausführungsform;
- Figs. 4A, 4B
- perspektivische Ansichten eines Filterelements in einer Pumpe des Wäschepflegegeräts gemäß einer zweiten Ausführungsform;
- Fig. 5
- eine perspektivische Ansicht eines Filterelements gemäß einer dritten Ausführungsform; und
- Figs. 6A, 6B, 6C
- schematische Ansichten von Querschnitten von Hohlkanälen in Filterelementen gemäß weiterer Ausführungsformen.
- Fig. 1
- a schematic view of a laundry care device;
- Fig. 2
- a schematic view of a pump of the laundry care appliance in a sectional illustration;
- Figs. 3A, 3B, 3C
- perspective views of a filter element in a pump of the laundry care device according to a first embodiment;
- Figs. 4A, 4B
- perspective views of a filter element in a pump of the laundry care device according to a second embodiment;
- Fig. 5
- a perspective view of a filter element according to a third embodiment; and
- Figs. 6A, 6B, 6C
- schematic views of cross sections of hollow channels in filter elements according to further embodiments.
Die Pumpe 105 umfasst eine Saugkammer 107, welche einen Saugstutzen 109 aufweist, welcher wiederum mit einer Saugleitung fluidtechnisch verbunden werden kann. Die Pumpe 105 umfasst ferner eine Abpumpdruckkammer 111 welche einen Abpumpdruckstutzen 113 aufweist, welcher wiederum mit einer Abpumpleitung fluidtechnisch verbunden werden kann. Die Pumpe 105 umfasst ferner eine Umpumpdruckkammer 115, welche einen Umpumpdruckstutzen 117 aufweist, welcher wiederum mit einer Umpumpleitung eines Umpumpsystems fluidtechnisch verbunden werden kann.The
Die Saugkammer 107 ist mit der Abpumpdruckkammer 111 durch ein Saugrohr 119 fluidtechnisch verbunden. Wie in
Wie aus der
Hierbei ist in der Abpumpdruckkammer 111 ein Filterelement aufgenommen, welches ausgebildet ist, Verunreinigungen aus der Waschflüssigkeit zu filtern, um zu verhindern, dass die Verunreinigungen in die Umpumpdruckkammer 115 gefördert werden. Ferner ist in der Saugkammer 107 insbesondere ein weiteres Filterelement, bzw. Fremdkörperfalle, aufgenommen, welches ausgebildet ist, Verunreinigungen aus der Waschflüssigkeit zu filtern, um zu verhindern, dass die Verunreinigungen in die Abpumpdruckkammer 111 und von der Abpumpdruckkammer 111 aus in die Umpumpdruckkammer 115 gefördert werden. Das Filterelement und das weitere Filterelement sind in der
Um Fremdkörper und/oder Kumulationen von Haar- und Flusen-Anhäufungen vor der Umpumpdruckkammer 115 zu reduzieren, bzw. abfördern zu können, sind die Abpumpdruckkammer 111 und die Umpumpdruckkammer 115 in Reihe geschaltet und ist die Umpumpdruckkammer 115 mit der Saugkammer 107 nicht direkt fluidtechnisch verbunden. Die fluidtechnische Verbindung von der vorgeschalteten Saugkammer 107 zur Umpumpdruckkammer 115 ist nur über das Durchströmen der Abpumpdruckkammer 111 möglich. Dadurch verbleiben die Fremdkörper sowie größere Haar- und Flusen-Anhäufungen zunächst in der Abpumpdruckkammer 111 und werden erst bei einem zeitlich nachgeschalteten Abpumpprozess aus der Abpumpdruckkammer 111 durch den Abpumpdruckstutzen 113 in die Abpumpleitung aus dem Wäschepflegegerät 100 hinaus gefördert.In order to reduce or convey away foreign bodies and / or accumulations of hair and lint accumulations in front of the pumping
Die
Das Filterelement 123 weist einen ersten Hohlkanal 125-1 auf, welcher die in den
Das Filterelement 123 weist einen zweiten Hohlkanal 125-2 auf, welcher den ersten Hohlkanal 125-1 fluidtechnisch mit der in den
Das Filterelement 123 weist eine Verengung 127 auf, welche den ersten Hohlkanal 125-1 und den zweiten Hohlkanal 125-2 fluidtechnisch verbindet und ausgebildet ist, in dem ersten Hohlkanal 125-1 geförderte Verunreinigungen zurückzuhalten, um zu verhindern, dass die Verunreinigungen durch den zweiten Hohlkanal 125-2 in die Umpumpdruckkammer 115 gefördert werden.The
Wie in der
Die Verengung 127 ist hierbei insbesondere als ein Ringspalt des Filterelements 123 geformt, wobei die als Ringspalt geformte Verengung 127 den ersten Verbindungsstutzen 129-1 zumindest abschnittsweise umläuft, und wobei der Ringspalt den ersten Hohlkanal 125-1 mit dem zweiten Hohlkanal 125-2 fluidtechnisch verbindet.The
Wie insbesondere aus den
Wie in den
Wie in der
Somit strömt die Waschflüssigkeit während des Umpumpvorgangs aus dem ersten Hohlkanal 125-1 durch die Verengung 127 in den zweiten Hohlkanal 125-2, wobei durch die Waschflüssigkeit mitgeführte Verunreinigungen an der Verengung 127 zurückgehalten werden und nicht durch den zweiten Hohlkanal 125-2 in die Umpumpdruckkammer 115 gefördert werden können.During the pumping process, the washing liquid thus flows from the first hollow channel 125-1 through the
Die
In der
Wie aus der
Die Pumpe 105 weist eine in
Die Pumpe 105 weist ferner einer Umpumpdruckkammer 115 auf, welche fluidtechnisch mit der Abpumpdruckkammer 111 verbunden ist. Hierbei ist zwischen der Abpumpdruckkammer 111 und der Umpumpdruckkammer 115 eine weitere Trennwand 139-2 angeordnet, um die Abpumpdruckkammer 111 von der Umpumpdruckkammer 115 abzugrenzen, und um Fremdkörper oder Verunreinigungen zurückzuhalten, wobei die weitere Trennwand 139-2 eine weitere Öffnung 141-2 aufweist, um die Abpumpdruckkammer 111 und die Umpumpdruckkammer 115 miteinander fluidtechnisch zu verbinden.The
Die Pumpe 105 weist eine in
Das Filterelement 123 weist einen ersten Hohlkanal 125-1 auf, welcher sich insbesondere gerade innerhalb des Filterelements 123 erstreckt. Das Filterelement 123 weist einen zweiten Hohlkanal 125-2 auf, welcher sich insbesondere gekrümmt innerhalb des Filterelements 123 erstreckt.The
Wie in der
Wie in der
Der erste und zweite Hohlkanal 125-1, 125-2 liegen hierbei zumindest abschnittsweise aneinander an und sind durch eine Kanaltrennwand 145 voneinander getrennt.The first and second hollow channels 125 - 1, 125 - 2 abut one another at least in sections and are separated from one another by a
Hierbei weist der zweite Hohlkanal 125-2 einen Hohlkanalvorderabschnitt 126-1 auf, welcher dem ersten Hohlkanal 125-1 zugewandt ist, und weist der zweite Hohlkanal 125-2 einen Hohlkanalhinterabschnitt 126-2 auf, welcher der Umpumpdruckkammer 115 zugewandt ist. Hierbei ist die Verengung 127 zwischen dem ersten Hohlkanal 125-1 und dem Hohlkanalvorderabschnitt 126-1 des zweiten Hohlkanals 125-2 angeordnet. Hierbei erstreckt sich der Hohlkanalvorderabschnitt 126-1 insbesondere gerade und erstreckt sich der Hohlkanalhinterabschnitt 126-2 insbesondere gekrümmt innerhalb des Filterelements 123.Here, the second hollow channel 125-2 has a hollow channel front section 126-1, which faces the first hollow channel 125-1, and the second hollow channel 125-2 has a hollow channel rear section 126-2, which faces the pumping
Hierbei erstreckt sich der Hohlkanalvorderabschnitt 126-1 insbesondere parallel zu dem ersten Hohlkanal 125-1 und/oder erstreckt sich der Hohlkanalhinterabschnitt 126-2 winklig zu dem ersten Hohlkanal 125-1.Here, the front hollow channel section 126-1 extends in particular parallel to the first hollow channel 125-1 and / or the rear hollow channel section 126-2 extends at an angle to the first hollow channel 125-1.
Wie aus der
Wie in der
Insbesondere lenkt das Filterelement 123 die Waschflüssigkeit derart um, so dass die Waschflüssigkeit durch die Verengung 127 in den zweiten Hohlkanal 125-2 strömen kann, und anschließend durch den zweiten Hohlkanal 125-2 in der zweiten Strömungsrichtung 135-2 gefördert werden kann. Hierbei können Verunreinigungen an der Verengung 127 wirksam zurückgehalten werden.In particular, the
Wie aus der
Wie aus der
Das in der
Die
In der in
In der in
In der in
Durch die in den Ausführungsformen der vorliegenden Offenbarung dargestellten Filterelemente 123 lassen sich folgende Vorteile erreichen.The following advantages can be achieved by the
Ein entscheidender Vorteil der Ausführungen der vorliegenden Offenbarung besteht in der Verwendung der Abpumpdruckkammer 111 als Vorfilter für die Umpumpdruckkammer 115, wobei sich über die Verengung 127 die Fremdkörperverträglichkeit der Umpumpvorrichtung 112-2 einstellen lässt. Besonders die 180°-Umlenkung der Strömungsführung in dem Filterelement 123 durch den ersten und zweiten Hohlkanal 125-1, 125-2 ermöglicht das Zurückhalten von Fremdkörpern innerhalb der Abpumpdruckkammer 111, die dann später in einem weiteren Verfahrensschritt abgepumpt werden können.A decisive advantage of the embodiments of the present disclosure consists in the use of the pumping
Die hydraulischen Pumpenkennlinien, insbesondere das Verhältnis des Drucks gegenüber dem Förderstrom, können ferner bei Aktivierung beider Pumpenantriebe des Umpumpsystems beeinflusst werden. Primär erfolgt bei dieser Pumpentandemschaltung eine Saugdruckabsenkung vor und in der gemeinsamen Saugkammer 107, wobei der Förderstrom sich dort fast verdoppelt, wobei hingegen die Förderströme an dem Abpumpdruckstutzen 113 und dem Umpumpdruckstutzen 117 nahezu unbeeinflusst bleiben.The hydraulic pump characteristics, in particular the ratio of the pressure to the delivery flow, can also be influenced when both pump drives of the pumping system are activated. In this tandem pump connection, the suction pressure is reduced in front of and in the
Bei der optionalen Zuschaltung der zweiten Pumpfunktion werden höhere Druckdifferenzen erzeugt, die zum Lösen von Verstopfungen verwendet werden können.With the optional activation of the second pump function, higher pressure differences are generated that can be used to loosen blockages.
Somit lassen sich adaptive Reaktionen auf das Umpumpverhalten des Wäschepflegegeräts 100 entwickeln. So kann eine über die Saugkammer 107 belüftete Pumpe 105 durch die zeitgleiche Ansteuerung beider Pumpvorrichtungen 112-1, 112-2 der Pumpe 105 schneller entlüften und auch den Förderstromaufbau beschleunigt bis zum Nominalumpumpförderstrom realisieren.Adaptive reactions to the pumping behavior of the
Die in der Wirkkette nachgeschaltete Umpumpvorrichtung 112-2, insbesondere die Zirkulationspumpe, kann durch eine zeitlich kurze Aktivierung während des Anlaufens der Abpumpvorrichtung 112-1, insbesondere der Entleerungspumpe, helfen, den Entlüftungsvorgang der Abpumpvorrichtung 112-1 zu beschleunigen und damit den initialen Druckaufbau für den Förderstromaufbau schneller zu generieren.The pumping device 112-2 downstream in the chain of action, in particular the circulation pump, can help to accelerate the venting process of the pumping device 112-1 and thus the initial pressure build-up for the pump-out device 112-1, in particular the emptying pump, by briefly activating it during the start-up to generate the flow rate build-up faster.
Mit einer entsprechenden Verschaltung der beiden Pumpvorrichtungen 112-1, 112-2 und damit mit dem Generieren von geringeren saugseitigen Systemdrücken, lassen sich zusätzliche und verbesserte Reinigungsverfahren für das Gesamtsystem entwickeln. Hierbei kann eine Entspannung der Anforderungen an die konstruktive Auslegung der Wasserwege des Umpumpkreislaufs erfolgen, da mit dieser Tandemverschaltung die zu fördernde Fremdkörpergröße für den Umpumpkreislauf zusätzlich limitiert bzw. eingestellt werden kann.With a corresponding connection of the two pump devices 112-1, 112-2 and thus with the generation of lower system pressures on the suction side, additional and improved cleaning methods can be developed for the overall system. Here, the requirements for the structural design of the waterways of the pumping circuit can be relaxed, since with this tandem connection the to promoting foreign body size for the pumping circuit can also be limited or adjusted.
Alle in Verbindung mit einzelnen Ausführungsformen der Erfindung erläuterten und gezeigten Merkmale können in unterschiedlicher Kombination in dem erfindungsgemäßen Gegenstand vorgesehen sein, um gleichzeitig deren vorteilhafte Wirkungen zu realisieren.All the features explained and shown in connection with individual embodiments of the invention can be provided in different combinations in the subject matter of the invention in order to simultaneously realize their advantageous effects.
Der Schutzbereich der vorliegenden Erfindung ist durch die Ansprüche gegeben und wird durch die in der Beschreibung erläuterten oder den Figuren gezeigten Merkmale nicht beschränkt.The scope of protection of the present invention is given by the claims and is not restricted by the features explained in the description or shown in the figures.
- 100100
- WäschepflegegerätLaundry care device
- 101101
- EinspülschaleDetergent bowl
- 103103
- Türdoor
- 105105
- Pumpepump
- 107107
- SaugkammerSuction chamber
- 109109
- SaugstutzenSuction nozzle
- 111111
- AbpumpdruckkammerPumping pressure chamber
- 112-1112-1
- AbpumpvorrichtungPumping device
- 112-2112-2
- UmpumpvorrichtungPumping device
- 113113
- AbpumpdruckstutzenPump out pressure port
- 115115
- UmpumpdruckkammerPumping pressure chamber
- 117117
- UmpumpdruckstutzenTransfer pressure port
- 119119
- SaugrohrSuction pipe
- 121121
- Weiteres SaugrohrAnother suction pipe
- 123123
- FilterelementFilter element
- 125-1125-1
- Erster HohlkanalFirst hollow channel
- 125-2125-2
- Zweiter HohlkanalSecond hollow channel
- 126-1126-1
- HohlkanalvorderabschnittHollow channel front section
- 126-2126-2
- HohlkanalrückabschnittHollow channel rear section
- 127127
- VerengungNarrowing
- 129-1129-1
- Erster Verbindungsstutzen des FilterelementsFirst connection piece of the filter element
- 129-2129-2
- Zweiter Verbindungsstutzen des FilterelementsSecond connection piece of the filter element
- 131-1131-1
- Erster Strömungsquerschnitt des ersten VerbindungsstutzensFirst flow cross section of the first connecting piece
- 131-2131-2
- Zweiter Strömungsquerschnitt des zweiten VerbindungsstutzensSecond flow cross section of the second connecting piece
- 135-1135-1
- Erste StrömungsrichtungFirst direction of flow
- 135-2135-2
- Zweiter StrömungsrichtungSecond direction of flow
- 139-1139-1
- Trennwandpartition wall
- 139-2139-2
- Weitere TrennwandAnother partition
- 141-1141-1
- Öffnungopening
- 141-2141-2
- Weitere ÖffnungFurther opening
- 143-1143-1
- Erste ErstreckungsrichtungFirst direction of extension
- 143-2143-2
- Zweite ErstreckungsrichtungSecond direction of extension
- 145145
- KanaltrennwandDuct partition
- 147147
- BefestigungsabschnittFastening section
Claims (15)
das Filterelement (123) einen ersten Hohlkanal (125-1) aufweist, welcher die Abpumpdruckkammer (111) fluidtechnisch mit dem Abpumpdruckstutzen (113) verbindet,
wobei das Filterelement (123) einen zweiten Hohlkanal (125-2) aufweist, welcher die Abpumpdruckkammer (111) fluidtechnisch mit der Umpumpdruckkammer (115) verbindet,
wobei das Filterelement (123) eine Verengung (127) definiert, welche den ersten Hohlkanal (125-1) und den zweiten Hohlkanal (125-2) fluidtechnisch verbindet,
wobei die Verengung (127) ausgebildet ist, in dem ersten Hohlkanal (125-1) geförderte Verunreinigungen zurückhalten, um zu verhindern, dass die Verunreinigungen durch den zweiten Hohlkanal (125-2) in die Umpumpdruckkammer (115) gefördert werden.Laundry care device (100) with a pump (105) for pumping washing liquid, the pump (105) comprising a suction chamber (107) which has a suction nozzle (109) for fluid connection with a suction line, the pump (105) having a pump-over pressure chamber (115), which has a pumping pressure connection (117) for fluid connection with a pumping line, the pump (105) comprising a pumping pressure chamber (111) which has a pumping pressure connection (113) for fluid connection with a pumping line, wherein the pumping pressure chamber ( 111) and the suction chamber (107) are fluidically connected, the pumping pressure chamber (111) and the pumping pressure chamber (115) being fluidically connected, and the pump (105) having a filter element (123) which is received in the pumping pressure chamber (111) is characterized in that
the filter element (123) has a first hollow channel (125-1) which fluidly connects the pump-out pressure chamber (111) to the pump-out pressure nozzle (113),
wherein the filter element (123) has a second hollow channel (125-2) which fluidly connects the pumping pressure chamber (111) to the pumping pressure chamber (115),
wherein the filter element (123) defines a constriction (127) which fluidly connects the first hollow channel (125-1) and the second hollow channel (125-2),
wherein the constriction (127) is designed to hold back impurities conveyed in the first hollow channel (125-1) in order to prevent the impurities from being conveyed through the second hollow channel (125-2) into the pumping pressure chamber (115).
der erste und zweite Hohlkanal (125-1, 125-2) einen kreisförmigen Querschnitt aufweisen, wobei der erste Hohlkanal (125-1) in dem zweiten Hohlkanal (125-2) angeordnet ist, oder dass
der erste Hohlkanal (125-1) einen kreisförmigen Querschnitt, und der zweite Hohlkanal (125-2) einen nierenförmigen Querschnitt aufweist, wobei der erste und zweite Hohlkanal (125-1, 125-2) zumindest abschnittsweise nebeneinander in dem Filterelement (123) angeordnet sind.Laundry care device (100) according to one of the preceding claims, characterized in that the first and second hollow channels (125-1, 125-2) each have a semicircular cross-section and the first and second hollow channels (125-1, 125-2) are at least are arranged in sections next to one another in the filter element (123), or that
the first and second hollow channels (125-1, 125-2) have a circular cross-section, the first hollow channel (125-1) being arranged in the second hollow channel (125-2), or that
the first hollow channel (125-1) has a circular cross-section, and the second hollow channel (125-2) has a kidney-shaped cross-section, the first and second hollow channels (125-1, 125-2) at least partially next to each other in the filter element (123) are arranged.
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DE102019207346.8A DE102019207346A1 (en) | 2019-05-20 | 2019-05-20 | Laundry care device with a pump |
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EP3741904A1 true EP3741904A1 (en) | 2020-11-25 |
EP3741904B1 EP3741904B1 (en) | 2023-04-19 |
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EP (1) | EP3741904B1 (en) |
CN (1) | CN111962264B (en) |
DE (1) | DE102019207346A1 (en) |
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DE102007061036A1 (en) * | 2007-12-18 | 2009-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Water-conducting household appliance with a self-cleaning filter system |
EP3026166A1 (en) * | 2014-11-27 | 2016-06-01 | BSH Hausgeräte GmbH | Circulating drainage apparatus and household appliance |
EP3153707A1 (en) * | 2015-10-07 | 2017-04-12 | LG Electronics Inc. | Laundry treating apparatus |
EP3252206A1 (en) * | 2015-01-27 | 2017-12-06 | Qingdao Haier Washing Machine Co., Ltd. | Two-head drainage pump of washing machine |
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DE102016203179B3 (en) * | 2016-02-29 | 2017-05-11 | BSH Hausgeräte GmbH | Laundry care unit with a pump |
CN107299902B (en) * | 2016-04-15 | 2021-06-25 | 德昌电机(深圳)有限公司 | Drain pump and household appliance with same |
DE102016207391A1 (en) * | 2016-04-29 | 2017-11-02 | BSH Hausgeräte GmbH | Laundry care device with a pump control |
DE102016212478A1 (en) * | 2016-07-08 | 2018-01-11 | BSH Hausgeräte GmbH | Laundry care device with a filter |
CN208562883U (en) * | 2018-07-02 | 2019-03-01 | 青岛海尔洗衣机有限公司 | A kind of the foreign matter collection device and washing machine of washing machine |
-
2019
- 2019-05-20 DE DE102019207346.8A patent/DE102019207346A1/en active Pending
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2020
- 2020-05-13 EP EP20174318.4A patent/EP3741904B1/en active Active
- 2020-05-13 PL PL20174318.4T patent/PL3741904T3/en unknown
- 2020-05-18 CN CN202010421275.8A patent/CN111962264B/en active Active
Patent Citations (5)
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US7406843B2 (en) * | 2002-05-08 | 2008-08-05 | Whirlpool Corporation | Remote sump with film heater and auto purge |
DE102007061036A1 (en) * | 2007-12-18 | 2009-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Water-conducting household appliance with a self-cleaning filter system |
EP3026166A1 (en) * | 2014-11-27 | 2016-06-01 | BSH Hausgeräte GmbH | Circulating drainage apparatus and household appliance |
EP3252206A1 (en) * | 2015-01-27 | 2017-12-06 | Qingdao Haier Washing Machine Co., Ltd. | Two-head drainage pump of washing machine |
EP3153707A1 (en) * | 2015-10-07 | 2017-04-12 | LG Electronics Inc. | Laundry treating apparatus |
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CN111962264B (en) | 2023-12-12 |
DE102019207346A1 (en) | 2020-11-26 |
PL3741904T3 (en) | 2023-07-24 |
EP3741904B1 (en) | 2023-04-19 |
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