EP4179139A1 - Wäschepflegegerät mit einer flüssigkeitsring-pumpe - Google Patents
Wäschepflegegerät mit einer flüssigkeitsring-pumpeInfo
- Publication number
- EP4179139A1 EP4179139A1 EP21737370.3A EP21737370A EP4179139A1 EP 4179139 A1 EP4179139 A1 EP 4179139A1 EP 21737370 A EP21737370 A EP 21737370A EP 4179139 A1 EP4179139 A1 EP 4179139A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- chamber
- impeller
- housing
- laundry
- 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.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 143
- 238000005406 washing Methods 0.000 claims abstract description 121
- 239000012530 fluid Substances 0.000 claims abstract description 71
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000008901 benefit Effects 0.000 description 16
- 238000005192 partition Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
-
- 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
Definitions
- the present invention relates to a laundry care appliance with a liquid ring pump.
- suds pumps designed in particular as centrifugal pumps are usually used to pump washing liquid out of the suds container.
- drain pumps can indeed pump washing liquid out of the tub of the laundry care appliance, but corresponding conventional drain pumps cannot pump air or a mixture of washing liquid and air.
- drum-operated laundry care devices have a large volume and therefore require a large installation space.
- the use of conventional drum-operated laundry care appliances is often correlated with high consumption of washing liquid and high energy consumption due to the large dead volume.
- laundry care processes in a conventional drum-operated laundry care appliance can often take a very long time.
- the object of the invention is achieved by a laundry care appliance with a liquid ring pump for delivering washing fluid, the liquid ring pump having a pump housing which delimits a pump chamber for delivering the washing fluid, the liquid ring pump having a rotatable impeller , which is arranged in the pump chamber, wherein the liquid ring pump has a drive shaft which is connected to the impeller and which is arranged at least in sections in the pump chamber, the pump having a pump drive for driving the drive shaft and for rotating the impeller, the pump drive having a drive housing which delimits a shaft chamber, with the drive shaft is accommodated at least in sections in the shaft chamber, characterized in that the liquid ring pump is designed to form a washing liquid ring in the pump chamber, which seals the impeller from the pump housing in order to convey the washing fluid, and in that the pump chamber is fluidically connected to the shaft chamber is connected to supply washing fluid discharged into the pumping chamber to the shaft chamber and to lubricate and cool the drive shaft accommodated in
- the laundry care appliance according to the present disclosure is in particular a drum-free laundry care appliance, ie a laundry care appliance which does not have a rotatable laundry drum.
- the liquid ring pump is designed to convey washing fluid, the washing fluid in particular comprising washing liquid, air or a mixture of washing liquid and air.
- the liquid ring pump is fluidically connected in particular to a flexible and fluid-tight, closable laundry chamber for receiving laundry of the laundry care appliance.
- the liquid ring pump is designed in particular to supply washing liquid to the laundry chamber during a feeding process in order to wet the laundry accommodated in the laundry chamber.
- the liquid ring pump is designed in particular to pump washing fluid out of the laundry chamber during a pumping-out process, the washing fluid in particular comprising washing liquid, air or a mixture of washing liquid and air.
- the liquid ring pump is designed in particular to generate a partial vacuum in the laundry chamber by pumping air or a mixture of washing liquid and air out of the laundry chamber in order to effectively reduce the residual moisture in the laundry in the laundry chamber. Through a within the Laundry chamber generated partial vacuum, the flexible laundry chamber is compressed and received in the laundry chamber laundry is squeezed, so that the volume of the laundry chamber can be effectively reduced.
- the liquid ring pump according to the present disclosure is configured to form a washing liquid ring in the pumping chamber, which seals the impeller from the pump housing in order to convey the washing liquid. This achieves the technical advantage that the washing liquid ring of the liquid ring pump enables washing liquid, air and a washing liquid-air mixture to be conveyed through the liquid ring pump.
- the pumping chamber defined by the pump housing is fluidly connected to the shaft chamber defined by the drive housing.
- the drive shaft connected to the impeller extends through the shaft chamber and through the pump chamber, so that the washing fluid, in particular washing liquid, contained in the pump chamber and the shaft chamber can advantageously lubricate and cool the drive shaft.
- a laundry care appliance according to the present application is understood as meaning an appliance which is used for laundry care, ie is used for washing and/or drying laundry, for example.
- a laundry care appliance is understood to mean a household laundry care appliance.
- a laundry care device that is used as part of housekeeping and is used to treat laundry in normal household quantities.
- the pump chamber has an impeller chamber in which the impeller is arranged, and the pump chamber has an antechamber, the antechamber being fluidically connected in particular to a suction connection and a pump connection of the pump housing, with the impeller chamber and the A valve plate is arranged in the antechamber, the valve plate having at least one feed opening through which the liquid ring pump can feed washing fluid from the antechamber into the impeller chamber, and the valve plate having at least one discharge opening through which the liquid ring pump draws washing fluid from the impeller chamber into the antechamber can discharge.
- valve plate with the at least one supply opening and with the at least one discharge opening ensures advantageous fluid guidance of the washing fluid.
- the pump housing has an antechamber housing which delimits the antechamber, with the suction connection piece and the pump connection piece being arranged on the antechamber housing.
- the pump housing has an impeller housing which delimits the impeller chamber, the impeller being arranged in the impeller housing.
- the pump housing is formed exclusively by the antechamber housing, the impeller housing and the valve plate arranged between the antechamber housing and the impeller housing.
- the antechamber housing, the valve plate and the impeller housing are designed in one piece or the antechamber housing, the valve plate and the impeller housing are connected to one another with a material fit, form fit and/or force fit.
- the antechamber housing has third fastening openings
- the valve plate has fourth fastening openings
- the impeller housing has fifth fastening openings, which are each arranged in alignment with one another, with one fastening element, in particular fastening screw, being guided through a third, fourth and fifth fastening opening.
- the discharge opening and/or the feed opening have a sickle-shaped shape, with a plurality of webs in particular extending through the discharge opening and/or through the feed opening.
- the discharge opening and the supply opening each comprise a single discharge opening and a single supply opening.
- the opening area of the discharge opening and the supply opening is the same size.
- a first sealing element is arranged between the supply opening and the pump housing, in particular the antechamber housing, and/or a second sealing element is arranged between the discharge opening and the pump housing, in particular the antechamber housing, and/or is arranged between the valve plate and the pump housing, in particular impeller housing, a third sealing element is arranged to ensure a fluid seal.
- the first or second sealing element in particular the sealing ring, enables a fluid-tight supply of the washing fluid between the supply opening or discharge opening and the pump housing, in particular the antechamber housing.
- the third sealing element in particular a sealing ring, advantageously seals the connection between the valve plate and the pump housing, in particular the impeller housing.
- the pump housing in particular the impeller housing, has a seal receptacle for receiving the third sealing element, in particular a sealing ring.
- the pump housing in particular the antechamber housing, has a suction connection and a pump connection, which are fluidically connected to the pump chamber, the liquid ring pump being designed to draw in washing fluid through the suction connection into the pump chamber, and to draw in the washing fluid through to pump the pump nozzle out of the pump chamber.
- the liquid ring pump according to the present disclosure has no further fluid connection piece on the pump housing in addition to the suction connection piece and the pump connection piece. This achieves the technical advantage that there is no need for a further fluid connection such as that used in conventional liquid ring pumps to generate the liquid ring, since the washing fluid sucked in through the suction connection of the liquid ring pump according to the present disclosure is not only through the pump chamber is pumped, but also serves to build up the washing liquid ring.
- the suction socket extends along a suction socket axis
- the pump socket extends along a pump socket axis
- the drive shaft extends along a shaft axis, with the suction socket axis and/or the pump socket axis extending in particular parallel to the shaft axis.
- the parallel extension direction of the suction connector axis and/or pump connector axis to the shaft axis ensures a particularly advantageous fluid guidance of the washing fluid through the pump chamber.
- the suction connector axis also extends parallel to the pump connector axis.
- a separating plate is arranged between the pump chamber, in particular the impeller chamber, and the shaft chamber, with the separating plate having at least one separating plate opening through which washing fluid flows from the pump chamber, in particular the impeller chamber, into the shaft chamber in order to lubricate the drive shaft and to cool.
- the drive housing of the pump drive has a further separating plate with at least one further separating plate opening, in particular four further separating plate openings, which at least partially covers the shaft chamber.
- the further separating plate is arranged between the separating plate and the shaft chamber. Fluid can thus be guided from the pump chamber, in particular the impeller chamber, through the separating plate opening of the separating plate and through the at least one further separating plate opening of the further separating plate into the shaft chamber.
- the drive shaft is passed through the partition plate opening of the partition plate, and in particular the drive shaft is passed through the further partition plate opening of the further partition plate.
- the pump housing delimiting the pump chamber, in particular the impeller housing, and the drive housing delimiting the shaft chamber are formed in one piece, or the pump housing, in particular the impeller housing, and the drive housing are connected to one another in a materially bonded, form-fitting and/or non-positive manner.
- the pump housing in particular the impeller housing, has a fastening flange which is fastened to the drive housing, in particular to a further fastening flange of the drive housing.
- the fastening flange has in particular a plurality of first fastening openings and the further fastening flange has a plurality of second fastening openings which are each arranged in alignment with one another, with one fastening element, in particular fastening screw, being guided through one first and one second fastening opening.
- the impeller has a plurality of impeller blades, in particular curved impeller blades, in particular concavely curved impeller blades.
- the impeller has a symmetrical or eccentric shape.
- a particularly symmetrical shape of the impeller is distinguished in particular by the fact that the impeller blades extend point-symmetrically to an impeller center.
- the impeller has an impeller coupling which is connected to the drive shaft in a torque-proof manner.
- the impeller clutch is accommodated in an annular opening of the impeller.
- the impeller includes an inner impeller ring and an outer impeller ring, and a plurality of impeller blades extending from the inner impeller ring to the outer impeller ring.
- the impeller has a plurality of impeller blades which have a blade height, and the impeller has an impeller cross section which is greater than the blade height.
- the pump drive has a wet-running electric motor, which is designed to rotate the drive shaft.
- the liquid ring pump is designed to convey washing liquid, air and a mixture of washing liquid and air as washing fluid.
- the liquid ring pump can advantageously be used to convey washing liquid, eg when filling or emptying a laundry chamber, and that the liquid ring pump can advantageously be used to convey air or a washing liquid air -Mixture, for example when creating a partial vacuum in a laundry chamber, can be used.
- the laundry care appliance has a laundry chamber, in particular a flexible laundry chamber that can be closed in a fluid-tight manner, for receiving laundry, the liquid ring pump being fluidically connected to the laundry chamber and being designed to deliver washing liquid into the laundry chamber during a feed process pump, and is designed to pump out washing liquid, air or a washing liquid-air mixture from the laundry chamber during a pumping-out process, in particular to pump it to an outlet of the laundry care appliance or into a washing liquid tank of the laundry care appliance.
- the liquid ring pump being fluidically connected to the laundry chamber and being designed to deliver washing liquid into the laundry chamber during a feed process pump, and is designed to pump out washing liquid, air or a washing liquid-air mixture from the laundry chamber during a pumping-out process, in particular to pump it to an outlet of the laundry care appliance or into a washing liquid tank of the laundry care appliance.
- the liquid ring pump can advantageously be used in a particularly drum-free laundry care appliance which does not have a rotating laundry drum for receiving laundry, but instead has a particularly flexible and fluid-tight, closable laundry chamber for receiving laundry.
- the liquid ring pump can also pump air or a mixture of washing liquid and air out of the laundry chamber, and thus in particular generate a partial vacuum in the particularly flexible and fluid-tight, closable laundry chamber, as a result of which an effective reduction in the residual moisture in the laundry can be achieved.
- the laundry care appliance has a washing liquid feed device for feeding washing liquid into the laundry chamber
- the laundry care appliance has a pressure sensor for detecting a pressure in the laundry chamber
- the laundry care appliance has a controller which is connected to the pressure sensor and the washing liquid feed device in terms of control technology is, wherein the controller is designed to activate the washing liquid supply device for supplying washing liquid into the laundry chamber when the pressure detected by the pressure sensor in the laundry chamber falls below a pressure threshold value for an adjustable time.
- the liquid ring pump is designed in which the rotation of the impeller in the pump chamber, in particular the impeller chamber, generates a pressure gradient through the washing liquid ring, which seals the impeller from the pump housing, through which washing fluid, in particular washing liquid, Air or a mixture of washing liquid and air can be pumped into the pump chamber, in particular the impeller chamber, and out of the pump chamber, in particular the impeller chamber.
- FIG. 1 shows a schematic view of a liquid ring pump of a laundry care appliance according to an embodiment of the present application
- FIG. 2 shows a further schematic view of the liquid ring pump shown in FIG. 1;
- FIG. 3 shows a further schematic view of the liquid ring pump shown in FIGS. 1 and 2;
- FIG. 1 shows a schematic view of a liquid ring pump of a laundry care appliance according to an embodiment of the present application.
- the laundry care appliance 100 not shown in FIG. 1 is in particular a drum-free one Laundry care device 100 formed, which thus has no rotatable laundry drum for receiving the laundry in contrast to conventional washing machines.
- rotation of the rotatable laundry drum ensures effective wetting of the laundry with the washing liquid during the washing process, and effective dehumidification of the laundry during a subsequent spinning process.
- the drum-free laundry care appliance 100 which is not shown in FIG. 1, does not have a rotating laundry drum for receiving the laundry, but instead has a flexible and fluid-tight, closable laundry chamber (not shown in FIG. 1) for receiving the laundry.
- the laundry chamber is in particular made of a reversibly deformable material, e.g. an elastomer, in order to ensure the flexibility of the flexible laundry chamber 101.
- the liquid ring pump shown in FIG. 1 can be used to convey washing fluid in the particular drum-free laundry care appliance according to the present application, to pump washing liquid, a washing liquid-air mixture, or air from the particularly flexible and fluid-tight closable laundry chamber pump out, whereby the residual moisture in the laundry in the laundry chamber can be advantageously reduced.
- liquid ring pump shown in FIG. 1 can alternatively also be used in a conventional laundry care appliance 100 with a rotatable laundry drum.
- the liquid ring pump 101 disclosed in FIG. 1 in an exploded view for conveying washing fluid has a pump housing 103 which delimits a pump chamber 105 which is only shown schematically in FIG.
- the liquid ring pump 101 has a rotatable impeller 107 which is arranged in the pump chamber 105 .
- the liquid ring pump 101 has a drive shaft 109 which is connected to the impeller 107 and which is arranged at least in sections in the pump chamber 105 .
- the liquid ring pump 101 also has a pump drive 111 for driving the drive shaft 109 and for rotating the impeller 107, the pump output 111 having a drive housing 113 which has a shaft chamber 115, shown only schematically in FIG. 1, for accommodating the drive shaft 109.
- the drive shaft 109 is arranged in the shaft chamber 115 at least in sections.
- the pump housing 103 in particular an antechamber housing 103-1 of the pump housing 103, has a suction connection 117-1 and a pump connection 117-2, which are fluidically connected to the pump chamber 105.
- the liquid ring pump 101 is designed to suck washing fluid into the pump chamber 105 through the suction connection 117-1 and to pump the sucked washing fluid out of the pump chamber 105 through the pump connection 117-2.
- the pump chamber 105 has an impeller chamber 105-1 delimited by an impeller housing 103-2, in which the impeller 107 is arranged, and the pump chamber 105 has an antechamber housing 103-1 of the pump housing 103 delimited antechamber 105-2, which is fluidically connected in particular to the suction port 117-1 and the pump port 117-2.
- a valve plate 119 is arranged between the antechamber 105-2, shown only schematically in FIG. 1, and the impeller chamber 105-1.
- the valve plate 119 has at least one supply opening 119-1, through which the liquid ring pump 101 can supply washing fluid from the antechamber 105-2 into the impeller chamber 105-1.
- the valve plate 119 has at least one discharge opening 119-2, through which the liquid ring pump 101 can discharge washing fluid from the impeller chamber 105-1 into the antechamber 105-2.
- a first sealing element 121-1 in particular a sealing ring, which cannot be seen in FIG.
- a second sealing element 121-2 which can be seen in FIG. in particular sealing ring, arranged to ensure a fluidic seal.
- a third sealing element 121-3 in particular a sealing ring, is arranged between the valve plate 119 and the pump housing 103, in particular the impeller housing 103-2, in order to ensure a fluid-technical seal.
- the third sealing element 121-3 is arranged here in particular in a seal receptacle 123 of the pump housing 103, in particular of the impeller housing 103-2.
- the pump drive 111 includes in particular a wet-running electric motor in which the rotating parts of the pump drive 111, in particular the drive shaft 109 extending from the shaft chamber 115 into the pump chamber 105, are in contact with the washing fluid conveyed by the liquid ring pump 101 in order to to ensure effective lubrication and cooling of the pump drive 111.
- the pump chamber 105 delimited by the pump housing 103 and the shaft chamber 115 delimited by the drive housing 113 are fluidically connected to one another, so that washing fluid conveyed into the pump chamber 105 can be supplied to the shaft chamber 115 .
- the fluidic connection between the pump chamber 105 and the shaft chamber 115 is ensured in particular by a separating plate 125 with a separating plate opening 125-1.
- the pump housing 103 in particular the impeller housing 103-2, has the separating plate 125, the separating plate 125 being arranged between the pump chamber 105, in particular the impeller chamber 105-1, and the shaft chamber 115.
- washing fluid can flow from the pumping chamber 105 into the shaft chamber 115 through the partition plate opening 125-1.
- the drive shaft 109 is passed through the partition plate opening 125-1.
- the drive housing 113 has a further separating plate 127 with at least one further separating plate opening 127-1, in particular four separating plate openings 127-1, which at least partially covers the shaft chamber 115.
- the further separating plate 127 is arranged between the separating plate 125 and the shaft chamber 115 .
- Fluid can thus be guided from pump chamber 105, in particular impeller chamber 105-1, through separating plate opening 125-1 of separating plate 125 and through the at least one further separating plate opening 127-1 of further separating plate 127 into shaft chamber 115.
- the pump housing 103 in particular the impeller housing 103-2, has a fastening flange 129 which is fastened to the drive housing 113, in particular to a further fastening flange 131 of the drive housing 113.
- the fastening flange 129 has a plurality of first fastening openings 133-1 and the further fastening flange 131 has a plurality of second fastening openings 133-2, which are each arranged in alignment with one another, with a fastening element not shown in FIG. 1, in particular a fastening screw, is guided through a respective first and second fastening opening 133-1, 133-2.
- the antechamber housing 103-1 has third fastening openings 133-3
- the valve plate 119 has fourth fastening openings 133-4
- the impeller housing 103-2 has fifth fastening openings 133-5, which are each arranged in alignment with one another, one in Fig. 1 non-illustrated fastening element, in particular fastening screw, is guided through a third, fourth and fifth fastening opening 133-3, 133-4 and 133-5 in order to ensure effective fastening of the components of the pump housing 103 and a fluid-tight pump chamber 105.
- FIG. 2 shows a further schematic view of the liquid ring pump shown in FIG.
- FIG. 2 shows a further schematic view of the liquid ring pump shown in FIG.
- the pumping action of the liquid ring pump 101 will now be discussed below, with the fluid guidance direction 135 being shown only schematically in FIG. 2 by arrows.
- the liquid ring pump 101 is formed in a washing liquid ring (not shown in FIG. 2) in the pump chamber 105, in particular in the impeller chamber 105-
- the washing liquid ring seals in particular the impeller blades 107-1 of the impeller 107 in relation to the pump housing 103, in particular the impeller housing 103-2, in order to generate a pressure gradient within the pump chamber 105, in particular the impeller chamber 105-1, which leads to a delivery flow of the washing fluid the pumping chamber 105 leads.
- the washing fluid is sucked in along the fluid routing direction 135 through the suction connection 117-1, guided through the supply opening 119-1 of the valve plate 119 into the impeller chamber 105-1, deflected in the impeller chamber 105-1, through the discharge opening 119-2 of the valve plate 119 discharged and through the pump nozzle 117-
- the fluidic connection between the pump chamber 105 and the shaft chamber 115 of the drive housing 113 allows washing fluid to penetrate from the pump chamber 105 into the shaft chamber 115 and lead to effective cooling or lubrication of the rotating drive shaft 109.
- An advantageously compact configuration of the liquid ring pump 101 is thus ensured, which provides sufficient pumping capacity and can therefore convey both washing liquid and air or a washing liquid-air mixture, as a result of which a partial vacuum can be generated in a connected laundry chamber .
- the impeller 107 has a plurality of impeller blades 107-1, in particular curved, in particular concavely curved, impeller blades 107-1.
- the impeller blades 107-1 extend from an inner impeller ring 107-2 to an outer impeller ring 107-3 of the impeller 107.
- an annular opening 107-4 in which an impeller clutch 107-5 connected to the drive shaft 109 is received .
- the discharge opening 119-2 and the feed opening 119-1 have a crescent shape, with a plurality of webs 136 in particular extending through the discharge opening 119-2 and the feed opening 119-1.
- FIG. 1 for a detailed representation of the webs 136 .
- a particularly advantageous fluid guiding behavior can be ensured by a corresponding configuration of the discharge opening 119-2 and the supply opening 119-1.
- FIG. 3 shows a further schematic view of the liquid ring pump shown in FIGS. 1 and 2 .
- FIG. 3 shows a further schematic view of the liquid ring pump shown in FIGS. 1 and 2 .
- suction connection 117-1 extends in particular along a suction connection axis 137-1 and that the pump connection 117-2 extends in particular along a pump connection axis 137-2, with the drive shaft 109 extending in particular along a shaft axis 137- 3, with the suction connector axis 137-1, the pump connector axis 137-2 and the shaft axis 137-3 extending parallel to one another.
- a particularly advantageous fluid guidance of the washing fluid in the pump chamber 105 is thereby produced.
- FIG 3 shows that the impeller blades 107 - 1 of the impeller 107 have a blade height 139 in particular, and that the impeller 107 has in particular an impeller cross section 141 , the impeller cross section 141 being greater in particular than the blade height 139 . This advantageously reduces the load acting on the impeller 107 when the washing fluid is pumped.
- FIGS. 4, 5 and 6 show further schematic views of the liquid ring pump shown in FIGS. 1, 2 and 3.
- FIGS. 4, 5 and 6 show further schematic views of the liquid ring pump shown in FIGS. 1, 2 and 3.
- illustrated exploded views of the liquid ring pump 101 show the
- FIGS. 4, 5 and 6 show the liquid ring pump 101 in an assembled state.
- FIG. 4 shows the liquid ring pump 101 in an oblique view.
- 5 shows the liquid ring pump 101 in a side view.
- 6 shows the liquid ring pump 101 in a front view.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020208731.8A DE102020208731A1 (de) | 2020-07-13 | 2020-07-13 | Wäschepflegegerät mit einer Flüssigkeitsring-Pumpe |
| PCT/EP2021/067317 WO2022012897A1 (de) | 2020-07-13 | 2021-06-24 | Wäschepflegegerät mit einer flüssigkeitsring-pumpe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4179139A1 true EP4179139A1 (de) | 2023-05-17 |
Family
ID=76765120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21737370.3A Withdrawn EP4179139A1 (de) | 2020-07-13 | 2021-06-24 | Wäschepflegegerät mit einer flüssigkeitsring-pumpe |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4179139A1 (de) |
| CN (1) | CN115867698A (de) |
| DE (1) | DE102020208731A1 (de) |
| WO (1) | WO2022012897A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022201565A1 (de) * | 2022-02-16 | 2023-08-17 | BSH Hausgeräte GmbH | Wäschepflegegerät mit einer Flüssigkeitsring-Pumpe |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2650509A1 (de) | 1976-11-04 | 1978-05-18 | Emanuel Alder | Vakuum-waschmaschine |
| DE2731451C2 (de) * | 1977-07-12 | 1978-12-14 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Flüssigkeitsringverdichter oder -vakuumpumpe |
| CN1005642B (zh) * | 1984-12-07 | 1989-11-01 | 西门子公司 | 真空设备 |
| EP1571252A1 (de) | 2004-03-03 | 2005-09-07 | Electrolux Home Products Corporation N.V. | Elektrisch angetriebene Pumpe für Waschmaschine o.ä. |
| DE102013020727A1 (de) * | 2013-12-07 | 2015-06-11 | Eliahu Koppelmann | Energiesparendes Verfahren zum waschen und trocknen in einem Waschtrockner |
| CN106811922B (zh) * | 2015-11-30 | 2019-09-17 | 无锡小天鹅电器有限公司 | 洗衣装置及其控制方法 |
-
2020
- 2020-07-13 DE DE102020208731.8A patent/DE102020208731A1/de active Pending
-
2021
- 2021-06-24 CN CN202180049710.1A patent/CN115867698A/zh active Pending
- 2021-06-24 WO PCT/EP2021/067317 patent/WO2022012897A1/de not_active Ceased
- 2021-06-24 EP EP21737370.3A patent/EP4179139A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN115867698A (zh) | 2023-03-28 |
| DE102020208731A1 (de) | 2022-01-13 |
| WO2022012897A1 (de) | 2022-01-20 |
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