EP3254596A1 - Water point and household appliance with same - Google Patents
Water point and household appliance with same Download PDFInfo
- Publication number
- EP3254596A1 EP3254596A1 EP17173348.8A EP17173348A EP3254596A1 EP 3254596 A1 EP3254596 A1 EP 3254596A1 EP 17173348 A EP17173348 A EP 17173348A EP 3254596 A1 EP3254596 A1 EP 3254596A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shut
- opening
- fluid
- outlet opening
- distributor housing
- 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
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4219—Water recirculation
- A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0049—Detection or prevention of malfunction, including accident prevention
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
Definitions
- the invention relates to a water diverter with the features of the preamble of claim 1.
- the invention also relates to a household appliance with such a water diverter.
- water switches are used to control liquid flows in water-bearing household appliance.
- water softeners serve to deliver washing or rinsing water, for example, to a first or a second rinsing chamber of two rinsing chambers.
- rinsing liquors serve water softening to rinse water, also called rinsing liquors, for example, alternatively or alternately to one of several sprayers, such as a spray arm for a top basket or a spray arm for a lower basket or possibly a spray arm for a cutlery drawer of the dishwasher or at the same time to deliver to several or all of these sprayers or spray arms.
- the invention has the problem of providing a water switch and a household appliance equipped therewith with reduced susceptibility to failure.
- the water diverter serves in a domestic appliance, in particular a dishwasher, for the controlled guidance of fluid, in particular of cleaning liquor, into a selection of outflow lines from the water diverter.
- the fluid is thus, after it has flowed through an inflow of the water diverter into the water diverter, passed through this optionally in one or more of a plurality of drain lines.
- the water switch has a distributor housing and a movable relative to the distributor housing, for example, rotatably mounted shut-off.
- the distributor housing has a first outlet opening into a first outflow line and at least one second outlet opening opening into a second outflow line.
- the shut-off element In a first position of the shut-off element, the shut-off element prevents the flow of the fluid through the second outlet opening and, in a second position of the shut-off element, allows the fluid to flow through the second outlet opening. At the same time, the shut-off element allows the flow of the fluid through the first outlet opening in both the first and in the second position of the shutoff to.
- the shut-off element can thus assume at least a first and a second position.
- a water diverter motor can be present, which can be controlled by a control device of the household appliance.
- the shut-off on a scraper which is designed so that it is moved on movement of the shut-off element from the first to the second or from the second to the first position of the shut-off via the first outlet opening.
- the scraper ensures that larger solids entrained in the fluid do not settle at the first outlet opening and / or that solids already fixed there are released again.
- the shut-off element may have a first opening assigned to the first outlet opening of the distributor housing and a second opening assigned to the second outlet opening of the distributor housing.
- the shut-off element rests against the distributor housing and on the one hand provides shut-off areas and, on the other hand, openings in the form of the first and second openings of the shut-off element.
- the shut-off areas and openings of the shut-off element shift relative to the outlet openings of the distributor housing.
- a shut-off region of the shut-off element completely covers the second outlet opening of the distributor housing, so that the flow of the fluid through the second outlet opening is prevented.
- preventing the flow of the fluid in the sense of the invention and according to the understanding of the skilled person in this context only means a substantially complete coverage of the outlet opening of the distributor housing, but not their completely fluid-tight seal, so that a slight leakage current through the formulation according to the invention not should be excluded.
- the second opening of the shut-off element in the second position of the shut-off element, is in overlap with the second outlet opening of the distributor housing so that the fluid can flow through the second opening of the shut-off element and the second outlet opening of the distributor housing into the second drainage line.
- the first opening of the shutoff which the associated with the first outlet opening of the distributor housing, is arranged and / or designed for this purpose so that the fluid can flow in both the first and in the second position of the shut-off in the first drain line, in particular the overlapping first opening of the shut-off and the first output opening of the distributor housing happens.
- the shut-off element in particular the first opening of the shut-off, is formed so that the fluid not only in the first and second position of the shut-off, but also during movement, in particular rotation of the shut-off of the first to the second and / or from the second flow into the first position of the shut-off element in the first drain line.
- the first opening of the shut-off element can be designed for this purpose in particular as a slot.
- the first opening ie the elongated hole along its longitudinal extent moves relative to the first outlet opening of the distributor housing, wherein the first opening, in particular the slot, and the first output opening of the distributor housing remain consistently in coverage.
- the shut-off on a scraper This divides the first opening of the shut-off element according to an advantageous embodiment in two opening areas.
- the scraper has a substantially smaller cross-sectional area than the first outlet opening of the distributor housing, in particular its cross-sectional area is less than 30% of the cross-sectional area of the first outlet opening of the distributor housing.
- the scraper is thus in any position of the shut-off in a position to completely cover the first outlet opening of the distributor housing. The flow of the fluid into the first drain line is thus prevented by the scraper not or at most insignificant extent.
- the scraper may be web-like or strut-like.
- the scraper has a greater, preferably substantially greater extent in its longitudinal direction than in its width direction.
- the scraper can extend in its longitudinal direction, in particular transversely to the direction of movement of the shut-off element. In its width direction, it separates the two opening areas of the first opening.
- the scraper bridges the first opening.
- the scraper can represent approximately a connection between the two longitudinal sides of the elongated hole formed as the first opening of the shut-off element. Such a scraper is particularly easy to manufacture.
- the scraper may consist of two web-like, opposite sections, each starting from two projecting opposite sides of the first opening of the shut-off element in the first opening and thereby form a narrow interruption of the scraper between them.
- the scraper has perpendicular to the opening surface of the first opening increased mobility, in particular it can also be designed to be spring-loaded movable.
- blocking of the water switch can be avoided by hard foreign bodies which are very tight in the first exit opening and which can not be immediately stripped off or released by the scraper.
- a further improvement can optionally be achieved by additionally providing grooves in the shut-off element which flank the longitudinal sides of the first opening of the shut-off element designed as a slot. As a result, the stiffness of the scraper is further reduced or increased its mobility perpendicular to the opening surface of the first opening and facilitates the lifting of the shutoff in this direction.
- the distributor housing preferably has at least one third outlet opening, which opens into a third outlet line.
- the shut-off element is designed such that in its first position, in which it prevents the flow of the fluid through the second outlet opening, the flow of the fluid through the third outlet opening permits.
- the shut-off element is preferably designed such that, conversely, in the second position of the shut-off element, in which it allows the fluid to flow through the second outlet opening, the flow of the fluid through the third outlet opening is prevented.
- either the second or the third outflow line can be supplied with fluid.
- the first outflow line is supplied with fluid in each of the positions.
- the distributor housing has a first outlet opening and a plurality of further outlet openings, that is, at least one second and one third outlet opening, wherein the shut-off element can assume a plurality of positions.
- the flow of the fluid through at least one of the further outlet openings is prevented by means of the shut-off element, the shut-off element allowing the flow of the fluid through the first outlet opening in each of the plurality of positions of the shut-off element.
- its distributor housing can have a substantially cylindrical shape, the inflow taking place approximately via a base side of the distributor housing and the outlet openings being located in the jacket surface of the distributor housing.
- the shut-off is as a cylinder jacket, to the Formed lateral surface of the distributor housing adjacent gate, which is rotatably mounted within the distributor housing.
- the distributor housing of the water switch can also be designed differently according to the general inventive idea.
- the outlet openings it is also possible, in particular, for the outlet openings to be arranged on a flat side of the distributor housing and for the shut-off element to also be flat, ie in particular disc-shaped and rotatably mounted relative to the planar side of the distributor housing and adjacent thereto.
- outlet openings of the distributor housing are arranged both in a cylindrical lateral surface and in a cover side and wherein the shut-off element is also cylindrical and openings are present both in the cylindrical lateral surface and in a cover side.
- a further aspect of the invention is a domestic appliance with the described water diverter according to the invention.
- the domestic appliance has in particular a control device for actuating the water diverter or the water diverter motor, i. for controlling the movement of the shut-off element.
- the household appliance may for example be a dishwasher.
- Such provides a washing compartment in which dishes can be rinsed, as well as several spraying devices, such as rotatably mounted spray arms.
- the spraying devices are supplied with cleaning liquor via lines, namely outflow lines of the water diverter according to the invention.
- the cleaning liquor is thereby collected in the lower region of the washing compartment and conveyed by means of a circulating pump via the lines to the sprayers, whereby a circulation circuit is formed.
- the water switch arranged in the circulation circuit in the conveying direction between the circulation pump and the spraying devices allows selective charging of only one of the spraying devices and / or a subset of the spraying devices.
- a so-called alternating rinsing can be carried out, in which a plurality of spraying devices, according to a first example, an upper and a lower spray arm, or, according to a second example arranged on the Spülraumdecke Topsprüharm, arranged below the upper basket central spray arm and under the lower rack arranged lower spray arm, and / or different subsets of these sprayers are alternately charged with cleaning liquor.
- a plurality of spraying devices according to a first example, an upper and a lower spray arm, or, according to a second example arranged on the Spülraumdecke Topsprüharm, arranged below the upper basket central spray arm and under the lower rack arranged lower spray arm, and / or different subsets of these sprayers are alternately charged with cleaning liquor.
- the second, the third and / or the further outflow lines of the water diverter are used to supply cleaning liquor each to a spraying device.
- the first drain line is preferably designed so that with simultaneous promotion of the cleaning liquor by means of Circulation pump through the water switch in the first drain line and one or more other drain lines in the first drain line a lesser, in particular significantly lower flow rate sets as in the one or more other drain lines.
- the first outlet opening may have a smaller, in particular substantially smaller, cross section than the further outlet openings of the distributor housing.
- the first discharge line also serves to supply cleaning liquor to a spraying device, which, however, is characterized in that it is continuously supplied with cleaning liquor during a program section, while the remaining spraying over the other drain lines during the program section only alternately with cleaning liquor be supplied.
- the first discharge line does not serve to supply cleaning liquor to a spraying device, but has a different purpose.
- the first drain line starts for this purpose on the input side of the water gate and ends preferably in the lower region of the washing compartment, in particular the collecting pot, or the circulating pump, the cleaning liquor is not performed in this cycle in particular on the dishes.
- the first discharge line can serve, for example, a turbidity measurement of the cleaning liquor, for which purpose a turbidity sensor can be arranged in the first drain line.
- the first drain line may also be part of a heat exchanger. In this case, heat is transferred from the cleaning liquor carried in the first outflow line to another medium. This may be, for example, a cleaning liquid, in particular fresh water, held in a tank for a later rinsing section.
- the first drain line is passed through the tank.
- the household appliance has a heat pump, can be heated with the cleaning liquor.
- the heat pump typically has at least one evaporator, one compressor, one condenser, and a flow circuit interconnecting these components with each other in terms of flow.
- the inventive design of the water switch finds particular use in combination with such a heat pump.
- the first outflow line of the water switch into which the first outlet opening of the distributor housing opens formed at least in sections as an integral part of the condenser of the heat pump.
- the heat pump can have a condenser which has two lines arranged coaxially with one another, of which one is a refrigerant line and the other at least partially the first one Drain line of the water switch is.
- a heat drawn in a refrigerant refrigerant heat energy withdrawn and transferred to the guided in the first discharge line cleaning liquor in particular according to such or a similar construction, a heat drawn in a refrigerant refrigerant heat energy withdrawn and transferred to the guided in the first discharge line cleaning liquor.
- Circulating pumps used as standard in the prior art usually provide a pump pressure of over 200 mbar, for example 220 mbar.
- a high pump pressure is for the passage of the cleaning liquor by the partially formed as an integral part of the condenser first drain line but not needed and is not desirable, so to set a suitable for the taking place in the condenser heat transfer volume flow on the input side of the first drain line a corresponding bottleneck and / or throttle is provided.
- This is formed in particular by the first outlet opening of the distributor housing.
- the cross-sectional area of the first outlet opening of the distributor housing is therefore preferably smaller, in particular substantially smaller than the cross-sectional area of the second and / or the further outlet openings of the distributor housing.
- shut-off element has a scraper, which is designed such that it is moved during a movement of the shut-off element from the first to the second or from the second to the first position of the shut-off element via the first outlet opening , In this way it is achieved that the first outlet opening is continuously charged with cleaning liquor during an alternating rinse, on the one hand, and on the other hand avoids that the water diverter and / or the first drain line clogged.
- the cross section of the first outflow line which starts as described above on the water switch and ends in the lower region of the washing compartment, in particular the collecting pot, or the circulation pump, preferably at any point smaller than the cross section of the first output port of Distributor housing, so the input-side cross-section of the first drain line.
- Fig. 1 shows a schematic representation of a household appliance 100 according to the invention in the form of a dishwasher.
- This has a washing compartment 140, in which the items to be washed, which can be stored in designated Spülgutkörben, such as a top basket 150, a lower basket 160 and optionally a cutlery drawer, can be rinsed.
- Spülgutkörben such as a top basket 150, a lower basket 160 and optionally a cutlery drawer, can be rinsed.
- a plurality of spraying devices 110, 120, 130 which in the present case are designed as lower spray arm 110, middle spray arm 120 and upper spray arm 130, serve to act on the ware with cleaning liquor.
- the cleaning liquor is collected in the lower region of the washing chamber 140, namely in the collecting pot, and passes via a suction line 13 to a circulating pump, by means of which it is conveyed to the spraying devices 110, 120, 130.
- a circulating pump by means of which it is conveyed to the spraying devices 110, 120, 130.
- the cleaning liquor the items to be washed comes back into the washing, so that a total of a rinse cycle is realized.
- one of the circulation pump downstream water diverter ensures a distribution of the cleaning liquor on a plurality of outflow lines 15a, 15b, 15c, with which the cleaning liquor to the Spraying devices 110, 120, 130 is passed.
- Circulation pump and water switch can, as indicated here, optionally be integrated in a common conveying / distributing component 3, wherein the cleaning liquor on the pressure side of the circulating pump passes directly into the water switch.
- the household appliance 100 has a heat pump 200, with which the cleaning liquor can be heated.
- the heat pump 200 typically has at least one evaporator, one compressor, one condenser 210 and a flow circuit interconnecting these components with each other in terms of flow.
- the water switch has a first drain line 14, which is formed in sections as an integral part of the condenser 210 of the heat pump 200. In the condenser 210, heat is transferred from a refrigerant to the cleaning liquor flowing in the first outflow line 14.
- the first discharge line 14 opens on the output side of the condenser 210, as shown here, preferably in the lower part of the washing chamber 140, in particular in the collecting pot, or directly into the circulation pump, so that the cleaning liquor on this cycle, in particular without direct contact with the dishes back to the circulation pump and the water switch arrives. But it is also conceivable that the first discharge line 14 is guided on the output side of the condenser 210 to a spray device.
- Fig. 2 shows a schematic perspective view of an embodiment of a water diverter 1 according to the invention, as they are approximately in the in Fig. 1 shown domestic appliance 100 can be used.
- the water diverter 1 is integrated, without restriction of generality, together with a circulating pump 2 in a common conveying / distributing component 3, so that the inflow of the water diverter 1 or of the distributor housing 10 is formed by the pressure-side outlet of the circulating pump 2.
- the water distributor 1 comprises a distributor housing 10 and a shut-off element 20.
- the distributor housing 10 has a plurality of outlet openings 11, 12a, 12b, 12c, through which fluid, such as cleaning liquor, from the distributor housing 10 into the respective outflow lines 14, 15a, 15b, 15c can get.
- the distributor housing 10 has a substantially cylindrical shape in this example, wherein the inflow takes place via a base side of the distributor housing 10 and the outlet openings 11, 12a, 12b, 12c are located in the lateral surface of the distributor housing 10.
- the shut-off element 20 is designed as a cylinder jacket-shaped, on the lateral surface of the distributor housing 10 adjacent gate, which is rotatably mounted within the distributor housing 10 and in particular in both directions about the cylinder axis 23 can rotate.
- This in Fig. 2 contained shut-off element 20 is in Fig. 3 in a schematic perspective view and in Fig. 4 shown again in isolation in a sectional view. It has a first opening 21 which is associated with the first outlet opening 11 of the distributor housing 10 and the associated first outflow line 14.
- the first opening 21 is formed as an elongated hole whose longitudinal extent in the cylinder jacket of the shutoff 20th along its direction of rotation.
- the first opening 21 has a scraper 30 which divides the first opening 21 into two opening areas 21 a, 21 b.
- the Abtreifer 30 is designed striven or web-like and connects the two longitudinal sides of the elongated hole formed as the first opening 21 with each other.
- the slot has a much greater extent in its longitudinal direction than in its width direction.
- the width of the oblong hole, which corresponds to the length of the stripping or web-like scraper 30, is for example about 15 to 25 mm, preferably about 20 mm.
- the scraper 30 has a width of, for example, 3 to 5 mm, in particular about 4 mm.
- the shut-off element 20 also has, as in Fig. 3 to recognize a further opening 22 which is associated with the other outlet openings 12a, 12b, 12c of the distributor housing 10 and discharge lines 15a, 15b,
- the shut-off element 20 is brought in different operating phases by rotation in different positions.
- the further opening 22 of the wiper 20 is in register with a first further output opening 12a of the distributor housing 10.
- the other further exit openings 12b, 12c are covered by closed areas of the shut-off element 20, so that from the distributor housing 10 no fluid can get into the associated discharge lines 15b, 15c.
- the further opening 22 of the wiper 20 is instead in overlap with another other outlet opening 12b of the distributor housing 10 and in a third position of the shutoff 20, the further opening 22 of the wiper 20 is in registration with a third
- the first output port 11 remains open, therefore, is not blocked by the shut-off 20.
- the elongated hole formed as the first opening 21 of the shutoff 20 with the first output port 11 remains in all three positions in coverage.
- the further drain lines 15a, 15b, 15c are alternately supplied with fluid, the flow of fluid into the first drain line 14 remains uninterrupted at each of the three positions of the shut-off element 20 and also during the change from one to the other position.
- the wiper 30 is automatically moved over the first outlet opening 11. A possible blockage of the first output port 11 is thus counteracted.
- the scraper over the entire opening cross section of the first output port 11 moved.
- Fig. 1 In the household appliance 100 according to the invention Fig. 1 In this way, an alternating rinsing is made possible, in which, in alternating phases of operation, either the drainage line 15a supplies the lower spray arm 110, the drainage line 15b the central spray arm 120 or the drainage line 15c supplies the upper spray arm 130 with cleaning liquor.
- the individual operating phases each last about 30 to 90 seconds before the position of the shut-off element 20 is changed again and again another spray arm 110, 120, 130 is supplied with cleaning liquor.
- the first discharge line 14 is continuously supplied with cleaning liquor, which allows uninterrupted operation of the heat pump 200 during the alternating washing and continuous heating of the flowing in the first discharge line 14 cleaning liquor in the condenser 210.
- Fig. 5 shows a schematic perspective view of another embodiment of a water diverter according to the invention 1.
- the scraper 30 bridges the elongated hole formed as first opening 21 differently than in FIG. 2 shown embodiment is not complete, but only for the most part, namely, by having a narrow interruption 31.
- the scraper 30 thus consists of two web-like, opposing sections, each projecting from opposite longitudinal sides of the slot in the slot and thereby form the narrow interruption 31 of the scraper 30 between them.
- the scraper 30 has in the radial direction increased mobility, in particular, it can also be designed to be spring-loaded movable.
- a further improvement can optionally be achieved by providing the longitudinal sides of the slots 32 in the shut-off element 20 flanking the first opening 21 of the shut-off element 20 in the form of an oblong hole. As a result, the rigidity of the scraper 30 is further reduced or increased its mobility in the radial direction and facilitates the lifting of the shutoff in the radial direction.
- shut-off element 20 is in Fig. 6 in a schematic perspective view and in Fig. 7 shown again in isolation in a sectional view. Apart from the added break 31 and the grooves 32 corresponds to the embodiment of FIGS. 5 to 7 the the FIGS. 2 to 4 , so that with regard to all other features on the description of the FIGS. 2 to 4 to refer.
- a plurality of second outflow lines it is also possible in principle for a plurality of second outflow lines to be acted on simultaneously with fluid.
- a first subset of further outflow lines 15a, 15b, 15c to be supplied with fluid in a first position of the shutoff element 20 and for a second subset of further outflow lines 15a different in at least one second position of the shutoff element 20, 15b, 15c are supplied with fluid.
- the subsets can each be formed from one or more further outflow lines 15a, 15b, 15c.
- a scraper 30 is provided, which is designed so that it a movement of the shutoff 20 is moved from a first to a second position on the first output port 11.
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- Washing And Drying Of Tableware (AREA)
Abstract
Die Erfindung betrifft eine Wasserweiche (1) für ein Haushaltgerät (100), insbesondere für einen Geschirrspülautomaten, zum gesteuerten Leiten von Fluid in eine Auswahl von Abflussleitungen (14, 15a, 15b, 15c), aufweisend ein Verteilergehäuse (10) und ein beweglich gelagertes Absperrelement (20), wobei das Verteilergehäuse (10) eine erste, in eine erste Abflussleitung (14) mündende Ausgangsöffnung (11) und mindestens eine zweite, in eine zweite Abflussleitung (15a, 15b, 15c) mündende Ausgangsöffnung (12a, 12b, 12c) aufweist, wobei das Absperrelement (20) in einer ersten Stellung des Absperrelements den Durchfluss des Fluid durch die zweite Ausgangsöffnung (12a, 12b, 12c) verhindert und in einer zweiten Stellung des Absperrelements (20) den Durchfluss des Fluid durch die zweite Ausgangsöffnung (12a, 12b, 12c) zulässt, wobei das Absperrelement (20) den Durchfluss des Fluid durch die erste Ausgangsöffnung (11) sowohl in der ersten als auch in der zweiten Stellung des Absperrelements (20) zulässt, und wobei das Absperrelement (20) einen Abstreifer (30) aufweist, welcher so ausgebildet ist, dass er bei einer Bewegung des Absperrelements (20) von der ersten in die zweite oder von der zweiten in die erste Stellung des Absperrelements (20) über die erste Ausgangsöffnung (11) verfahren wird.The invention relates to a water diverter (1) for a domestic appliance (100), in particular for an automatic dishwasher, for the controlled guidance of fluid into a selection of outflow lines (14, 15a, 15b, 15c), comprising a distributor housing (10) and a moveably mounted one Shut-off element (20), wherein the distributor housing (10) has a first outlet opening (11) opening into a first drain line (14) and at least one second outlet opening (12a, 12b, 12c) opening into a second drain line (15a, 15b, 15c) ), wherein the shut-off element (20) prevents the passage of the fluid through the second outlet opening (12a, 12b, 12c) in a first position of the shut-off element and in a second position of the shut-off element (20) the flow of the fluid through the second outlet opening (20). 12a, 12b, 12c), wherein the shut-off element (20) the flow of the fluid through the first output port (11) in both the first and in the second position of the shut-off element (20), and wherein the shut-off element (20) has a scraper (30) which is designed such that it moves from the first to the second position or the second position to the first position when the shut-off element (20) moves Shut off (20) over the first output port (11) is moved.
Description
Die Erfindung betrifft eine Wasserweiche mit den Merkmalen des Oberbegriffs von Anspruch 1. Die Erfindung betrifft darüber hinaus ein Haushaltgerät mit einer solchen Wasserweiche.The invention relates to a water diverter with the features of the preamble of
In wasserführenden Haushaltsgeräten, wie beispielsweise Wasch- oder Geschirrspülmaschinen, werden Wasserweichen eingesetzt, um Flüssigkeitsströme im wasserführenden Haushaltsgerät zu steuern. Bei einer Waschmaschine dienen Wasserweichen dazu, Wasch- oder Spülwasser beispielsweise an eine erste oder eine zweite Spülkammer von zwei Spülkammern abzugeben. Im Falle des Einsatzes in Geschirrspülmaschinen dienen Wasserweichen dazu, Spülwasser, auch Spülflotten genannt, beispielsweise alternativ bzw. abwechselnd an eine von mehreren Sprüheinrichtungen, beispielsweise einen Sprüharm für einen Oberkorb oder einen Sprüharm für einen Unterkorb oder ggf. einen Sprüharm für eine Besteckschublade der jeweiligen Geschirrspülmaschine oder gleichzeitig an mehrere oder alle diese Sprüheinrichtungen bzw. Sprüharme abzugeben.In water-bearing household appliances, such as washing machines or dishwashers, water switches are used to control liquid flows in water-bearing household appliance. In a washing machine, water softeners serve to deliver washing or rinsing water, for example, to a first or a second rinsing chamber of two rinsing chambers. In the case of use in dishwashers serve water softening to rinse water, also called rinsing liquors, for example, alternatively or alternately to one of several sprayers, such as a spray arm for a top basket or a spray arm for a lower basket or possibly a spray arm for a cutlery drawer of the dishwasher or at the same time to deliver to several or all of these sprayers or spray arms.
Der Erfindung stellt sich das Problem, eine Wasserweiche und ein damit ausgerüstetes Haushaltgerät mit verringerter Störanfälligkeit bereitzustellen.The invention has the problem of providing a water switch and a household appliance equipped therewith with reduced susceptibility to failure.
Erfindungsgemäß wird dieses Problem durch die Wasserweiche und das Haushaltgerät mit den Merkmalen der unabhängigen Patentansprüche gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.According to the invention, this problem is solved by the water diverter and the domestic appliance having the features of the independent patent claims. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.
Die erfindungsgemäße Wasserweiche dient in einem Haushaltgerät, insbesondere einem Geschirrspülautomaten, zum gesteuerten Leiten von Fluid, insbesondere von Reinigungsflotte, in eine Auswahl von Abflussleitungen aus der Wasserweiche. Das Fluid wird also, nachdem es durch einen Zufluss der Wasserweiche in die Wasserweiche geströmt ist, durch diese wahlweise in ein oder mehrere einer Mehrzahl von Abflussleitungen geleitet. Die Wasserweiche weist ein Verteilergehäuse und ein relativ zum Verteilergehäuse beweglich, z.B. rotatorisch gelagertes Absperrelement auf. Das Verteilergehäuse weist eine erste, in eine erste Abflussleitung mündende Ausgangsöffnung und mindestens eine zweite, in eine zweite Abflussleitung mündende Ausgangsöffnung auf. Dabei verhindert das Absperrelement in einer ersten Stellung des Absperrelements den Durchfluss des Fluid durch die zweite Ausgangsöffnung und lässt in einer zweiten Stellung des Absperrelements den Durchfluss des Fluid durch die zweite Ausgangsöffnung zu. Gleichzeitig lässt das Absperrelement den Durchfluss des Fluid durch die erste Ausgangsöffnung sowohl in der ersten als auch in der zweiten Stellung des Absperrelements zu. Das Absperrelement kann somit zumindest eine erste und eine zweite Stellung einnehmen. Zur Bewegung des Absperrelements von der ersten in die zweite Stellung oder umgekehrt kann beispielsweise ein Wasserweichenmotor vorhanden sein, welcher durch eine Steuereinrichtung des Haushaltgeräts angesteuert werden kann.The water diverter according to the invention serves in a domestic appliance, in particular a dishwasher, for the controlled guidance of fluid, in particular of cleaning liquor, into a selection of outflow lines from the water diverter. The fluid is thus, after it has flowed through an inflow of the water diverter into the water diverter, passed through this optionally in one or more of a plurality of drain lines. The water switch has a distributor housing and a movable relative to the distributor housing, for example, rotatably mounted shut-off. The distributor housing has a first outlet opening into a first outflow line and at least one second outlet opening opening into a second outflow line. In a first position of the shut-off element, the shut-off element prevents the flow of the fluid through the second outlet opening and, in a second position of the shut-off element, allows the fluid to flow through the second outlet opening. At the same time, the shut-off element allows the flow of the fluid through the first outlet opening in both the first and in the second position of the shutoff to. The shut-off element can thus assume at least a first and a second position. For moving the shutoff element from the first to the second position or vice versa, for example, a water diverter motor can be present, which can be controlled by a control device of the household appliance.
Erfindungsgemäß weist das Absperrelement einen Abstreifer auf, welcher so ausgebildet ist, dass er bei Bewegung des Absperrelements von der ersten in die zweite oder von der zweiten in die erste Stellung des Absperrelements über die erste Ausgangsöffnung verfahren wird. Durch den Abstreifer wird erreicht, dass sich im Fluid mitgeführte größere Festkörper gar nicht an der ersten Ausgangsöffnung festsetzen und/oder dass sich derartige dort bereits festgesetzte Festkörper wieder lösen. Somit kann auf sehr einfache und effektive Weise einerseits eine unterbrechungsfreie Versorgung der ersten Abflussleitung mit Fluid ermöglicht und dabei andererseits vermieden werden, dass die Wasserweiche und/oder die erste Abflussleitung verstopft und somit eine Fehlfunktion des Haushaltgeräts oder ein Wartungsfall auftritt.According to the invention the shut-off on a scraper, which is designed so that it is moved on movement of the shut-off element from the first to the second or from the second to the first position of the shut-off via the first outlet opening. The scraper ensures that larger solids entrained in the fluid do not settle at the first outlet opening and / or that solids already fixed there are released again. Thus, in a very simple and effective manner, on the one hand, an uninterruptible supply of the first outflow line with fluid is made possible and, on the other hand, it is avoided that the water diverter and / or the first outflow line become blocked and thus a malfunction of the household appliance or a maintenance case occurs.
Das Absperrelement kann eine der ersten Ausgangsöffnung des Verteilergehäuses zugeordnete erste Öffnung und eine der zweiten Ausgangsöffnung des Verteilergehäuses zugeordnete zweite Öffnung aufweisen. Das Absperrelement liegt am Verteilergehäuse an und stellt zum Einen Absperrbereiche und zum Anderen Durchbrüche in Gestalt der ersten und zweiten Öffnung des Absperrelements bereit. Bei der Bewegung, insbesondere Rotation des Absperrelements verschieben sich die Absperrbereiche und Öffnungen des Absperrelements relativ zu den Ausgangsöffnungen des Verteilergehäuses. Bei der ersten Stellung des Absperrelements überdeckt ein Absperrbereich des Absperrelements die zweite Ausgangsöffnung des Verteilergehäuses vollständig, so dass der Durchfluss des Fluid durch die zweite Ausgangsöffnung verhindert wird. Dabei bedeutet eine Verhinderung des Durchflusses des Fluid im Sinne der Erfindung und gemäß der Verständnisses des Fachmanns in diesem Zusammenhang allerdings lediglich eine im Wesentlichen vollständige Überdeckung der Ausgangsöffnung des Verteilergehäuses, jedoch nicht deren vollständig fluiddichte Abdichtung, so dass ein geringfügiger Leckagestrom durch die erfindungsgemäße Formulierung nicht ausgeschlossen sein soll. Bei der zweiten Stellung des Absperrelements befindet sich dagegen die zweite Öffnung des Absperrelements vor, also in Überdeckung mit, der zweiten Ausgangsöffnung des Verteilergehäuses, so dass das Fluid durch die zweite Öffnung des Absperrelements und die zweite Ausgangsöffnung des Verteilergehäuses in die zweite Abflussleitung strömen kann. Somit kann die Förderung des Fluid in die zweite Abflussleitung mittels der Wasserweiche, insbesondere durch Bewegung des Absperrelements in die entsprechende Stellung wahlweise an- oder abgestellt werden. In die erste Abflussleitung soll dagegen stets Fluid gefördert werden. Die erste Öffnung des Absperrelements, welche der ersten Ausgangsöffnung des Verteilergehäuses zugeordnet ist, ist hierfür derart angeordnet und/oder ausgebildet, dass das Fluid sowohl in der ersten als auch in der zweiten Stellung des Absperrelements in die erste Abflussleitung strömen kann, wobei es insbesondere die sich überdeckende erste Öffnung des Absperrelements und die erste Ausgangsöffnung des Verteilergehäuses passiert. Vorzugsweise ist das Absperrelement, insbesondere die erste Öffnung des Absperrelements, so ausgebildet, dass das Fluid nicht nur in der ersten und zweiten Stellung des Absperrelements, sondern auch während der Bewegung, insbesondere Rotation des Absperrelements von der ersten in die zweite und/oder von der zweiten in die erste Stellung des Absperrelements in die erste Abflussleitung strömen kann. Somit wird für eine vollkommen unterbrechungsfreie Versorgung der ersten Abflussleitung mit Fluid gesorgt. Die erste Öffnung des Absperrelements kann hierfür insbesondere als Langloch ausgebildet sein. Bei der Bewegung, insbesondere Rotation des Absperrelements von der ersten in die zweite und/oder von der zweiten in die erste Stellung des Absperrelements verfährt die erste Öffnung, also das Langloch entlang seiner Längserstreckung relativ zu der ersten Ausgangsöffnung des Verteilergehäuses, wobei die erste Öffnung, insbesondere das Langloch, und die erste Ausgangsöffnung des Verteilergehäuses durchgehend in Überdeckung bleiben.The shut-off element may have a first opening assigned to the first outlet opening of the distributor housing and a second opening assigned to the second outlet opening of the distributor housing. The shut-off element rests against the distributor housing and on the one hand provides shut-off areas and, on the other hand, openings in the form of the first and second openings of the shut-off element. During movement, in particular rotation of the shut-off element, the shut-off areas and openings of the shut-off element shift relative to the outlet openings of the distributor housing. In the first position of the shut-off element, a shut-off region of the shut-off element completely covers the second outlet opening of the distributor housing, so that the flow of the fluid through the second outlet opening is prevented. In this case, however, preventing the flow of the fluid in the sense of the invention and according to the understanding of the skilled person in this context only means a substantially complete coverage of the outlet opening of the distributor housing, but not their completely fluid-tight seal, so that a slight leakage current through the formulation according to the invention not should be excluded. In contrast, in the second position of the shut-off element, the second opening of the shut-off element is in overlap with the second outlet opening of the distributor housing so that the fluid can flow through the second opening of the shut-off element and the second outlet opening of the distributor housing into the second drainage line. Thus, the promotion of the fluid in the second drain line by means of the water switch, in particular by movement of the shut-off element in the corresponding position optionally on or off. On the other hand, fluid should always be delivered to the first discharge line. The first opening of the shutoff, which the associated with the first outlet opening of the distributor housing, is arranged and / or designed for this purpose so that the fluid can flow in both the first and in the second position of the shut-off in the first drain line, in particular the overlapping first opening of the shut-off and the first output opening of the distributor housing happens. Preferably, the shut-off element, in particular the first opening of the shut-off, is formed so that the fluid not only in the first and second position of the shut-off, but also during movement, in particular rotation of the shut-off of the first to the second and / or from the second flow into the first position of the shut-off element in the first drain line. Thus, a completely uninterruptible supply of the first drain line is provided with fluid. The first opening of the shut-off element can be designed for this purpose in particular as a slot. During the movement, in particular rotation of the shut-off element from the first to the second and / or from the second to the first position of the shut-off element, the first opening, ie the elongated hole along its longitudinal extent moves relative to the first outlet opening of the distributor housing, wherein the first opening, in particular the slot, and the first output opening of the distributor housing remain consistently in coverage.
Erfindungsgemäß weist das Absperrelement einen Abstreifer auf. Dieser unterteilt die erste Öffnung des Absperrelements gemäß einem vorteilhaften Ausführungsbeispiel in zwei Öffnungsbereiche. Vorzugsweise weist der Abstreifer eine wesentlich kleinere Querschnittsfläche auf als die erste Ausgangsöffnung des Verteilergehäuses, insbesondere beträgt seine Querschnittsfläche weniger als 30% der Querschnittsfläche der ersten Ausgangsöffnung des Verteilergehäuses. Der Abstreifer ist also in keiner Stellung des Absperrelements in der Lage, die erste Ausgangsöffnung des Verteilergehäuses vollständig abzudecken. Das Strömen des Fluid in die erste Abflussleitung wird durch den Abstreifer somit nicht oder allenfalls in unwesentlichem Maße behindert.According to the invention the shut-off on a scraper. This divides the first opening of the shut-off element according to an advantageous embodiment in two opening areas. Preferably, the scraper has a substantially smaller cross-sectional area than the first outlet opening of the distributor housing, in particular its cross-sectional area is less than 30% of the cross-sectional area of the first outlet opening of the distributor housing. The scraper is thus in any position of the shut-off in a position to completely cover the first outlet opening of the distributor housing. The flow of the fluid into the first drain line is thus prevented by the scraper not or at most insignificant extent.
Gemäß einem weiteren Merkmal kann der Abstreifer steg- oder strebenartig ausgebildet sein. Der Abstreifer hat insbesondere eine größere vorzugsweise wesentlich größere Ausdehnung in seiner Längsrichtung als in seiner Breitenrichtung. Dabei kann der Abstreifer sich in seiner Längsrichtung insbesondere quer zur Bewegungsrichtung des Absperrelements erstrecken. In seiner Breitenrichtung trennt er die beiden Öffnungsbereiche der ersten Öffnung. Vorzugsweise überbrückt der Abstreifer die erste Öffnung. So kann der Abstreifer etwa eine Verbindung zwischen den beiden Längsseiten der als Langloch ausgebildeten ersten Öffnung des Absperrelements darstellen. Ein derartiger Abstreifer ist besonders einfach herzustellen.According to a further feature, the scraper may be web-like or strut-like. In particular, the scraper has a greater, preferably substantially greater extent in its longitudinal direction than in its width direction. In this case, the scraper can extend in its longitudinal direction, in particular transversely to the direction of movement of the shut-off element. In its width direction, it separates the two opening areas of the first opening. Preferably, the scraper bridges the first opening. Thus, the scraper can represent approximately a connection between the two longitudinal sides of the elongated hole formed as the first opening of the shut-off element. Such a scraper is particularly easy to manufacture.
Gemäß einem anderen Ausführungsbeispiel kann der Abstreifer aus zwei stegartigen, einander gegenüberliegenden Abschnitten bestehen, die jeweils ausgehend von zwei gegenüberliegenden Seiten der ersten Öffnung des Absperrelements in die erste Öffnung hineinragen und dabei eine schmale Unterbrechung des Abstreifers zwischen sich ausbilden. Auf diese Weise besitzt der Abstreifer senkrecht zur Öffnungsfläche der ersten Öffnung eine erhöhte Beweglichkeit, insbesondere kann er auch federbelastet beweglich ausgebildet sein. Auf diese Weise kann ein Blockieren der Wasserweiche durch in der ersten Ausgangsöffnung sehr festsitzende harte Fremdkörper, die sich durch den Abstreifer nicht unmittelbar abstreifen bzw. lösen lassen, vermieden werden. Eine weitere Verbesserung kann optional dadurch erreicht werden, dass zusätzlich Nuten im Absperrelement vorgesehen sind, welche die Längsseiten der als Langloch ausgebildeten ersten Öffnung des Absperrelements flankieren. Hierdurch wird die Steifigkeit des Abstreifers noch weiter herabgesetzt bzw. dessen Beweglichkeit senkrecht zur Öffnungsfläche der ersten Öffnung erhöht bzw. das Abheben des Absperrelements in dieser Richtung erleichtert.According to another embodiment, the scraper may consist of two web-like, opposite sections, each starting from two projecting opposite sides of the first opening of the shut-off element in the first opening and thereby form a narrow interruption of the scraper between them. In this way, the scraper has perpendicular to the opening surface of the first opening increased mobility, in particular it can also be designed to be spring-loaded movable. In this way, blocking of the water switch can be avoided by hard foreign bodies which are very tight in the first exit opening and which can not be immediately stripped off or released by the scraper. A further improvement can optionally be achieved by additionally providing grooves in the shut-off element which flank the longitudinal sides of the first opening of the shut-off element designed as a slot. As a result, the stiffness of the scraper is further reduced or increased its mobility perpendicular to the opening surface of the first opening and facilitates the lifting of the shutoff in this direction.
Vorzugsweise weist das Verteilergehäuse zusätzlich zur ersten und zweiten Ausgangsöffnung zumindest eine dritte Ausgangsöffnung auf, welche in eine dritte Abflussleitung mündet. Dabei ist das Absperrelement so ausgebildet, dass es in seiner ersten Stellung, in der es den Durchfluss des Fluid durch die zweite Ausgangsöffnung verhindert, den Durchfluss des Fluid durch die dritte Ausgangsöffnung zulässt. Vorzugsweise ist das Absperrelement darüber hinaus so ausgebildet, dass umgekehrt in der zweiten Stellung des Absperrelements, in der es den Durchfluss des Fluid durch die zweite Ausgangsöffnung zulässt, der Durchfluss des Fluid durch die dritte Ausgangsöffnung verhindert wird. Durch die Bewegung des Absperrelements in die jeweiligen Stellungen kann somit entweder die zweite oder die dritte Abflussleitung mit Fluid beschickt werden. Die erste Abflussleitung wird dagegen in jeder der Stellungen mit Fluid beschickt.In addition to the first and second outlet openings, the distributor housing preferably has at least one third outlet opening, which opens into a third outlet line. In this case, the shut-off element is designed such that in its first position, in which it prevents the flow of the fluid through the second outlet opening, the flow of the fluid through the third outlet opening permits. In addition, the shut-off element is preferably designed such that, conversely, in the second position of the shut-off element, in which it allows the fluid to flow through the second outlet opening, the flow of the fluid through the third outlet opening is prevented. As a result of the movement of the shut-off element into the respective positions, either the second or the third outflow line can be supplied with fluid. In contrast, the first outflow line is supplied with fluid in each of the positions.
Es können auch noch weitere Ausgangsöffnungen vorhanden sein. Allgemeiner ausgedrückt weist das Verteilergehäuse eine erste Ausgangsöffnung und eine Mehrzahl von weiteren Ausgangsöffnungen, also mindestens eine zweite und eine dritte Ausgangsöffnung, auf, wobei das Absperrelement eine Mehrzahl von Stellungen einnehmen kann. Vorzugsweise wird bei jeder dieser Mehrzahl von Stellungen des Absperrelements der Durchfluss des Fluid durch zumindest eine der weiteren Ausgangsöffnungen mittels des Absperrelements verhindert, wobei das Absperrelement den Durchfluss des Fluid durch die erste Ausgangsöffnung in jeder dieser Mehrzahl von Stellungen des Absperrelements zulässt.There may also be other exit openings. More generally, the distributor housing has a first outlet opening and a plurality of further outlet openings, that is, at least one second and one third outlet opening, wherein the shut-off element can assume a plurality of positions. Preferably, in each of these plurality of positions of the shut-off element, the flow of the fluid through at least one of the further outlet openings is prevented by means of the shut-off element, the shut-off element allowing the flow of the fluid through the first outlet opening in each of the plurality of positions of the shut-off element.
Gemäß einem Ausführungsbeispiel der Wasserweiche kann ihr Verteilergehäuse eine im wesentlichen zylindrische Form aufweisen, wobei der Zufluss etwa über eine Grundseite des Verteilergehäuses erfolgt und die Ausgangsöffnungen sich in der Mantelfläche des Verteilergehäuses befinden. Das Absperrelement ist als zylindermantelförmige, an die Mantelfläche des Verteilergehäuses anliegende Kulisse ausgebildet, welche innerhalb des Verteilergehäuses rotatorisch gelagert ist. Das Verteilergehäuse der Wasserweiche kann gemäß dem allgemeinen Erfindungsgedanken jedoch auch anders gestaltet sein. So ist insbesondere auch möglich, dass die Ausgangsöffnungen auf einer planen Seite des Verteilergehäuses angeordnet sind und das das Absperrelement ebenfalls plan, also insbesondere scheibenförmig ausgebildet ist und relativ zur planen Seite des Verteilergehäuses und an diese anliegend rotierbar gelagert ist. Ebenso sind Mischformen denkbar, wobei beispielsweise Ausgangsöffnungen des Verteilergehäuses sowohl in einer zylindrischen Mantelfläche als auch in einer Deckseite angeordnet sind und wobei das Absperrelement ebenfalls zylinderförmig ausgebildet ist und Öffnungen sowohl in der zylindrischen Mantelfläche als auch in einer Deckseite vorhanden sind.According to one exemplary embodiment of the water distributor, its distributor housing can have a substantially cylindrical shape, the inflow taking place approximately via a base side of the distributor housing and the outlet openings being located in the jacket surface of the distributor housing. The shut-off is as a cylinder jacket, to the Formed lateral surface of the distributor housing adjacent gate, which is rotatably mounted within the distributor housing. However, the distributor housing of the water switch can also be designed differently according to the general inventive idea. Thus, it is also possible, in particular, for the outlet openings to be arranged on a flat side of the distributor housing and for the shut-off element to also be flat, ie in particular disc-shaped and rotatably mounted relative to the planar side of the distributor housing and adjacent thereto. Likewise, hybrid forms are conceivable, for example, outlet openings of the distributor housing are arranged both in a cylindrical lateral surface and in a cover side and wherein the shut-off element is also cylindrical and openings are present both in the cylindrical lateral surface and in a cover side.
Ein weiterer Aspekt der Erfindung stellt ein Haushaltgerät mit der beschriebenen erfindungsgemäßen Wasserweiche dar. Das Haushaltgerät weist insbesondere eine Steuereinrichtung auf zum Ansteuern der Wasserweiche bzw. des Wasserweichenmotors, d.h. zum Steuern der Bewegung des Absperrelements.A further aspect of the invention is a domestic appliance with the described water diverter according to the invention. The domestic appliance has in particular a control device for actuating the water diverter or the water diverter motor, i. for controlling the movement of the shut-off element.
Das Haushaltgerät kann beispielsweise ein Geschirrspülautomat sein. Ein solcher stellt einen Spülraum bereit, in dem Spülgut gespült werden kann, sowie mehrere Sprüheinrichtungen, wie etwa drehbar gelagerte Sprüharme. Die Sprüheinrichtungen werden über Leitungen, nämlich Abflussleitungen der erfindungsgemäßen Wasserweiche, mit Reinigungsflotte versorgt. Die Reinigungsflotte wird dabei im unteren Bereich des Spülraums gesammelt und mittels einer Umwälzpumpe über die Leitungen zu den Sprüheinrichtungen gefördert, wodurch ein Umwälzkreislauf gebildet wird. Die im Umwälzkreislauf in Förderrichtung zwischen Umwälzpumpe und Sprüheinrichtungen angeordnete Wasserweiche ermöglicht ein wahlweises Beschicken lediglich einer der Sprüheinrichtungen und/oder einer Teilmenge der Sprüheinrichtungen. So kann ein sogenanntes Wechselspülen durchgeführt werden, bei dem mehrere Sprüheinrichtungen, gemäß einem ersten Beispiel ein oberer und ein unterer Sprüharm, oder aber, gemäß einem zweiten Beispiel ein an der Spülraumdecke angeordneter Topsprüharm, ein unterhalb des Oberkorbs angeordneter mittlerer Sprüharm und ein unter dem Unterkorb angeordneter unterer Sprüharm, und/oder unterschiedliche Teilmengen dieser Sprüheinrichtungen abwechselnd mit Reinigungsflotte beschickt werden. Auf diese Weise kann die Mindestwassermenge, die für einen stabilen Umwälzkreislauf erforderlich ist, reduziert und damit insgesamt der Wasserverbrauch gesenkt werden.The household appliance may for example be a dishwasher. Such provides a washing compartment in which dishes can be rinsed, as well as several spraying devices, such as rotatably mounted spray arms. The spraying devices are supplied with cleaning liquor via lines, namely outflow lines of the water diverter according to the invention. The cleaning liquor is thereby collected in the lower region of the washing compartment and conveyed by means of a circulating pump via the lines to the sprayers, whereby a circulation circuit is formed. The water switch arranged in the circulation circuit in the conveying direction between the circulation pump and the spraying devices allows selective charging of only one of the spraying devices and / or a subset of the spraying devices. Thus, a so-called alternating rinsing can be carried out, in which a plurality of spraying devices, according to a first example, an upper and a lower spray arm, or, according to a second example arranged on the Spülraumdecke Topsprüharm, arranged below the upper basket central spray arm and under the lower rack arranged lower spray arm, and / or different subsets of these sprayers are alternately charged with cleaning liquor. In this way, the minimum amount of water required for a stable circulation circuit can be reduced and thus overall water consumption can be reduced.
Die zweite, die dritte und/oder die weiteren Abflussleitungen der Wasserweiche dienen zur Zuleitung von Reinigungsflotte jeweils zu einer Sprüheinrichtung. Die erste Abflussleitung ist vorzugsweise so ausgebildet, dass bei gleichzeitiger Förderung der Reinigungsflotte mittels der Umwälzpumpe durch die Wasserweiche in die erste Abflussleitung und eine oder mehrere weitere Abflussleitungen sich in der ersten Abflussleitung ein geringerer, insbesondere wesentlich geringerer Volumenstrom einstellt als in der einen oder den mehreren weiteren Abflussleitungen. Hierzu kann die erste Ausgangsöffnung einen geringeren, insbesondere wesentlich geringeren Querschnitt aufweisen als die weiteren Ausgangsöffnungen des Verteilergehäuses. Dabei ist möglich, dass die erste Abflussleitung ebenfalls zur Zuleitung von Reinigungsflotte zu einer Sprüheinrichtung dient, welche sich jedoch dadurch auszeichnet, dass diese während eines Programmabschnitts durchgehend mit Reinigungsflotte versorgt wird, während die übrigen Sprüheinrichtungen über die weiteren Abflussleitungen während des Programmabschnitts lediglich abwechselnd mit Reinigungsflotte versorgt werden. Vorzugsweise dient die erste Abflussleitung jedoch nicht zur Zuleitung von Reinigungsflotte zu einer Sprüheinrichtung, sondern hat einen anderen Zweck. Die erste Abflussleitung startet hierfür eingangsseitig an der Wasserweiche und endet vorzugsweise im unteren Bereich des Spülraums, insbesondere dem Sammeltopf, oder der Umwälzpumpe, wobei die Reinigungsflotte innerhalb dieses Kreislaufs insbesondere nicht über das Spülgut geführt wird. Die erste Abflussleitung kann dabei beispielsweise einer Trübungsmessung der Reinigungsflotte dienen, wofür ein Trübungssensor in der ersten Abflussleitung angeordnet sein kann. Zusätzlich oder alternativ kann die erste Abflussleitung auch Teil eines Wärmetauschers sein. Dabei wird Wärme von der in der ersten Abflussleitung geführten Reinigungsflotte auf ein anderes Medium übertragen. Hierbei kann es sich beispielsweise um ein in einem Tank für einen späteren Spülabschnitt vorgehaltene Reinigungsflüssigkeit, insbesondere Frischwasser handeln. Dabei wird die erste Abflussleitung durch den Tank hindurchgeführt.The second, the third and / or the further outflow lines of the water diverter are used to supply cleaning liquor each to a spraying device. The first drain line is preferably designed so that with simultaneous promotion of the cleaning liquor by means of Circulation pump through the water switch in the first drain line and one or more other drain lines in the first drain line a lesser, in particular significantly lower flow rate sets as in the one or more other drain lines. For this purpose, the first outlet opening may have a smaller, in particular substantially smaller, cross section than the further outlet openings of the distributor housing. It is possible that the first discharge line also serves to supply cleaning liquor to a spraying device, which, however, is characterized in that it is continuously supplied with cleaning liquor during a program section, while the remaining spraying over the other drain lines during the program section only alternately with cleaning liquor be supplied. Preferably, however, the first discharge line does not serve to supply cleaning liquor to a spraying device, but has a different purpose. The first drain line starts for this purpose on the input side of the water gate and ends preferably in the lower region of the washing compartment, in particular the collecting pot, or the circulating pump, the cleaning liquor is not performed in this cycle in particular on the dishes. The first discharge line can serve, for example, a turbidity measurement of the cleaning liquor, for which purpose a turbidity sensor can be arranged in the first drain line. Additionally or alternatively, the first drain line may also be part of a heat exchanger. In this case, heat is transferred from the cleaning liquor carried in the first outflow line to another medium. This may be, for example, a cleaning liquid, in particular fresh water, held in a tank for a later rinsing section. The first drain line is passed through the tank.
Gemäß einem besonders vorgezogenen Ausführungsbeispiel weist das Haushaltgerät eine Wärmepumpe auf, mit der Reinigungsflotte erwärmt werden kann. Hierdurch kann der Energieverbrauch insbesondere während einer Heizphase der Reinigungsflotte reduziert werden, da der Heizvorgang meist den größten Teil des Energieverbrauchs eines Haushaltgeräts, insbesondere einer Geschirrspülmaschine, verursacht. Die Wärmepumpe verfügt typischerweise zumindest über einen Verdampfer, einen Verdichter, einen Verflüssiger sowie über einen diese Komponenten miteinander strömungstechnisch verbindenden Strömungskreislauf. Die erfindungsgemäße Ausgestaltung der Wasserweiche findet insbesondere Verwendung in Kombination mit einer solchen Wärmepumpe. Bevorzugterweise ist in diesem Fall die erste Abflussleitung der Wasserweiche, in die die erste Ausgangsöffnung des Verteilergehäuses mündet, zumindest abschnittsweise als integraler Bestandteil des Verflüssigers der Wärmepumpe ausgebildet. So kann die Wärmepumpe beispielsweise über einen Verflüssiger verfügen, der zwei über koaxial zueinander angeordnete Leitungen verfügt, von denen die eine eine Kältemittelleitung und die andere zumindest abschnittsweise die erste Abflussleitung der Wasserweiche ist. Im bestimmungsgemäßen Anwendungsfall wird, insbesondere gemäß einer solchen oder ähnlichen Konstruktion, einem in einer Kältemittelleitung geführten Kältemittel Wärmeenergie entzogen und auf die in der ersten Abflussleitung geführte Reinigungsflotte übertragen.According to a particularly preferred embodiment, the household appliance has a heat pump, can be heated with the cleaning liquor. As a result, the energy consumption can be reduced, in particular during a heating phase of the cleaning liquor, since the heating process usually causes most of the energy consumption of a household appliance, in particular a dishwasher. The heat pump typically has at least one evaporator, one compressor, one condenser, and a flow circuit interconnecting these components with each other in terms of flow. The inventive design of the water switch finds particular use in combination with such a heat pump. Preferably, in this case, the first outflow line of the water switch into which the first outlet opening of the distributor housing opens, formed at least in sections as an integral part of the condenser of the heat pump. For example, the heat pump can have a condenser which has two lines arranged coaxially with one another, of which one is a refrigerant line and the other at least partially the first one Drain line of the water switch is. In the intended use case, in particular according to such or a similar construction, a heat drawn in a refrigerant refrigerant heat energy withdrawn and transferred to the guided in the first discharge line cleaning liquor.
Damit im Verflüssiger einer Wärmepumpe ein hinreichender Wärmeübertrag auf die aufzuheizende Reinigungsflotte stattfinden kann, bedarf es einer hinreichend großen Tauscherfläche, weshalb eine erste Abflussleitung bei einem Durchmesser von z.B. 3,5mm bis 9mm eine Länge von z.B. 1m bis 2,7m aufweisen müsste. Derart ausgebildete Rohre stellen aber nicht nur eine ausreichende Tauscherfläche zur Verfügung, sie stellen in nachteiliger Weise auch einen erheblichen Strömungswiderstand bereit.In order that a sufficient heat transfer to the cleaning liquor to be heated can take place in the condenser of a heat pump, a sufficiently large heat exchanger surface is required, which is why a first drain line with a diameter of e.g. 3.5mm to 9mm a length of e.g. 1m to 2.7m would have. However, such formed tubes not only provide a sufficient exchange surface available, they also provide a significant flow resistance in a disadvantageous manner.
Nach dem Stand der Technik standardmäßig eingesetzte Umwälzpumpen stellen üblicherweise einen Pumpendruck von über 200mbar, beispielsweise 220mbar bereit. Ein so hoher Pumpendruck wird für die Hindurchführung der Reinigungsflotte durch die abschnittsweise als integraler Bestandteil des Verflüssigers ausgebildete erste Abflussleitung aber nicht benötigt und ist auch nicht gewünscht, weshalb zur Einstellung eines für die im Verflüssiger stattfindende Wärmeübertragung geeigneten Volumenstroms eingangsseitig der ersten Abflussleitung eine entsprechende Engstelle und/oder Drossel vorgesehen ist. Diese wird insbesondere durch die erste Ausgangsöffnung des Verteilergehäuses gebildet. Die Querschnittsfläche der ersten Ausgangsöffnung des Verteilergehäuses wird daher vorzugsweise kleiner, insbesondere wesentlich kleiner gewählt als die Querschnittsfläche der zweiten und/oder der weiteren Ausgangsöffnungen des Verteilergehäuses. Eine derartige Engstelle und/oder Drossel ist in nachteilige Weise aber für Verschmutzung anfällig, was umso schwerer wiegt, als dass auch im bestimmungsgemäßen Verwendungsfall während eines Spülvorgangs unter Umständen abgelöste Speisereste und/oder dgl. Verschmutzungspartikel Bestandteil der umgewälzten Reinigungsflotte sind. Dieses Problem wird durch die Erfindung gelöst, dadurch dass das Absperrelement einen Abstreifer aufweist, welcher so ausgebildet ist, dass er bei einer Bewegung des Absperrelements von der ersten in die zweite oder von der zweiten in die erste Stellung des Absperrelements über die erste Ausgangsöffnung verfahren wird. Auf diese Weise wird erreicht, dass die erste Ausgangsöffnung während eines Wechselspülens einerseits durchgehend mit Reinigungsflotte beschickt wird, und andererseits vermieden, dass die Wasserweiche und/oder die erste Abflussleitung verstopfen.Circulating pumps used as standard in the prior art usually provide a pump pressure of over 200 mbar, for example 220 mbar. Such a high pump pressure is for the passage of the cleaning liquor by the partially formed as an integral part of the condenser first drain line but not needed and is not desirable, so to set a suitable for the taking place in the condenser heat transfer volume flow on the input side of the first drain line a corresponding bottleneck and / or throttle is provided. This is formed in particular by the first outlet opening of the distributor housing. The cross-sectional area of the first outlet opening of the distributor housing is therefore preferably smaller, in particular substantially smaller than the cross-sectional area of the second and / or the further outlet openings of the distributor housing. However, such a bottleneck and / or throttle is prone to pollution, which weighs the heavier than that even in the intended use case during a rinse under certain circumstances detached food particles and / or the like. Pollution particles are part of the circulating cleaning liquor. This problem is solved by the invention, in that the shut-off element has a scraper, which is designed such that it is moved during a movement of the shut-off element from the first to the second or from the second to the first position of the shut-off element via the first outlet opening , In this way it is achieved that the first outlet opening is continuously charged with cleaning liquor during an alternating rinse, on the one hand, and on the other hand avoids that the water diverter and / or the first drain line clogged.
Gemäß einem weiteren Merkmal der Erfindung ist der Querschnitt der ersten Abflussleitung, welche wie bereits beschrieben eingangsseitig an der Wasserweiche startet und im unteren Bereich des Spülraums, insbesondere dem Sammeltopf, oder der Umwälzpumpe endet, vorzugsweise an keiner Stelle kleiner als der Querschnitt der ersten Ausgangsöffnung des Verteilergehäuses, also dem eingangsseitigen Querschnitt der ersten Abflussleitung. Somit ist auch die Gefahr reduziert, dass an einer anderen Stelle als der ersten Ausgangsöffnung eine Verstopfung in der ersten Abflussleitung auftreten kann.According to a further feature of the invention, the cross section of the first outflow line, which starts as described above on the water switch and ends in the lower region of the washing compartment, in particular the collecting pot, or the circulation pump, preferably at any point smaller than the cross section of the first output port of Distributor housing, so the input-side cross-section of the first drain line. Thus, the risk is reduced that may occur at a location other than the first outlet opening, a blockage in the first drain line.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt
Figur 1- eine schematische Darstellung eines erfindungsgemäßen Haushaltgeräts
Figur 2- eine schematische Darstellung einer erfindungsgemäßen Wasserweiche
Figur 3- eine schematische Darstellung des Absperrelements einer erfindungsgemäßen Wasserweiche
- Figur 4
- eine Querschnittsdarstellung des Absperrelements gemäß
Figur 3 - Figur 5
- eine schematische Darstellung einer erfindungsgemäßen Wasserweiche gemäß einem weiteren Ausführungsbeispiel
- Figur 6
- eine schematische Darstellung des Absperrelements einer erfindungsgemäßen Wasserweiche gemäß einem weiteren Ausführungsbeispiel
- Figur 7
- eine Querschnittsdarstellung des Absperrelements gemäß
Figur 6
- FIG. 1
- a schematic representation of a household appliance according to the invention
- FIG. 2
- a schematic representation of a water diverter according to the invention
- FIG. 3
- a schematic representation of the shutoff of a water diverter according to the invention
- FIG. 4
- a cross-sectional view of the shutoff according to
FIG. 3 - FIG. 5
- a schematic representation of a water diverter according to the invention according to another embodiment
- FIG. 6
- a schematic representation of the shut-off of a water diverter according to the invention according to another embodiment
- FIG. 7
- a cross-sectional view of the shutoff according to
FIG. 6
Im bestimmungsgemäßen Gebrauch der Wasserweiche 1, insbesondere innerhalb eines Haushaltgeräts 100 wie in
Im erfindungsgemäßen Haushaltgeräts 100 gemäß
Das in
Im Übrigen ist darauf hinzuweisen, dass der Fachmann erkennt, dass die Anzahl der weiteren Ausgangsöffnungen 12a, 12b, 12c und der weiteren Abflussleitungen 15a, 15b, 15c in den dargestellten
Darüber hinaus kann im Absperrelement 20 neben der ersten Öffnung 21 und der in den
- 11
- Wasserweichewater points
- 22
- Umwälzpumpecirculating pump
- 33
- Förder-/VerteilbauteilConveying / Verteilbauteil
- 1010
- Verteilergehäusedistributor housing
- 1111
- Ausgangsöffnung (Erste Ausgangsöffnung)Exit opening (first exit opening)
- 12a,12b,12c12a, 12b, 12c
- Ausgangsöffnung (Weitere Ausgangsöffnung)Outlet opening (further outlet opening)
- 1313
- Saugleitungsuction
- 1414
- Abflussleitung (Erste Abflussleitung)Drain line (first drain line)
- 15a,15b,15c15a, 15b, 15c
- Abflussleitung (Weitere Abflussleitung)Drain pipe (further drain pipe)
- 2020
- Absperrelementshut-off
- 2121
- Öffnung (Erste Öffnung)Opening (first opening)
- 21 a, 21 b21 a, 21 b
- Öffnungsbereichopening area
- 2222
- Öffnung (Weitere Öffnung)Opening (further opening)
- 2323
- Rotationsachseaxis of rotation
- 3030
- Abstreiferscraper
- 3131
- Unterbrechunginterruption
- 3232
- Nutgroove
- 100100
- Haushaltgeräthousehold appliance
- 110110
- Unterer SprüharmLower spray arm
- 120120
- Mittlerer SprüharmMedium spray arm
- 130130
- Oberer SprüharmUpper spray arm
- 140140
- SpülraumWash cabinet
- 150150
- Oberkorbupper basket
- 160160
- Unterkorblower basket
- 200200
- Wärmepumpeheat pump
- 210210
- Verflüssigercondenser
Claims (11)
dadurch gekennzeichnet,
dass das Absperrelement (20) einen Abstreifer (30) aufweist, welcher so ausgebildet ist,
dass er bei einer Bewegung des Absperrelements (20) von der ersten in die zweite oder von der zweiten in die erste Stellung des Absperrelements (20) über die erste Ausgangsöffnung (11) verfahren wird.A water diverter (1) for a domestic appliance (100), in particular for an automatic dishwasher, for controlled passage of fluid into a selection of outflow lines (14, 15a, 15b, 15c), comprising a distributor housing (10) and a movably mounted shut-off element (20) , wherein the distributor housing (10) has a first outlet opening (11) opening into a first outflow line (14) and at least one second outlet opening (12a, 12b, 12c) opening into a second outflow line (15a, 15b, 15c) the shut-off element (20) in a first position of the shut-off element prevents the flow of the fluid through the second outlet opening (12a, 12b, 12c) and in a second position of the shut-off element (20) the flow of the fluid through the second outlet opening (12a, 12b, 12c), and wherein the shut-off element (20) allows the flow of fluid through the first outlet opening (11) in both the first and the second position of the shut-off element (20),
characterized,
that the shut-off element (20) a scraper (30) which is adapted
that it is moved during a movement of the shut-off element (20) from the first to the second or from the second to the first position of the shut-off element (20) via the first output opening (11).
dadurch gekennzeichnet,
dass das Absperrelement (20) eine der ersten Ausgangsöffnung (11) des Verteilergehäuses (10) zugeordnete erste Öffnung (21) und mindestens eine der zweiten oder der weiteren Ausgangsöffnungen (12a, 12b, 12c) des Verteilergehäuses (10) zugeordnete zweite Öffnung (22) aufweist.Water separator (1) according to the preceding claim,
characterized,
that the shut-off element (20) one of the first outlet opening (11) of the distributor housing (10) associated with the first opening (21) and at least one of the second or the further outlet ports (12a, 12b, 12c) associated with the distributor housing (10), second opening (22 ) having.
dadurch gekennzeichnet,
dass der Abstreifer (30) die erste Öffnung (21) in zwei Öffnungsbereiche (21a, 21b) unterteilt.Water separator (1) according to the preceding claim,
characterized,
that the scraper (30), the first opening (21) into two opening sections (21a, 21b) divided.
dadurch gekennzeichnet,
dass der Abstreifer (30) eine wesentlich kleinere Querschnittsfläche aufweist als die erste Ausgangsöffnung (11) des Verteilergehäuses (10).Water separator (1) according to at least one of the preceding claims,
characterized,
in that the wiper (30) has a substantially smaller cross-sectional area than the first outlet opening (11) of the distributor housing (10).
dadurch gekennzeichnet,
dass die erste Öffnung (21) als Langloch ausgebildet ist.Water separator (1) according to at least one of the preceding claims,
characterized,
that the first opening (21) is formed as a slot.
dadurch gekennzeichnet,
dass der Abstreifer (30) steg- oder strebenartig ausgebildet ist und sich insbesondere quer zur Bewegungsrichtung des Absperrelements (20) erstreckt.Water separator (1) according to at least one of the preceding claims,
characterized,
that the wiper (30) is web-like or strut-like and extends in particular transversely to the direction of movement of the shut-off element (20).
dadurch gekennzeichnet,
dass das Verteilergehäuse (10) eine dritte, in eine dritte Abflussleitung (15) mündende Ausgangsöffnung (12a, 12b, 12c) aufweist, wobei das Absperrelement (30) in der ersten Stellung des Absperrelements (30) den Durchfluss des Fluid durch die dritte Ausgangsöffnung (12a, 12b, 12c) zulässt.Water separator (1) according to at least one of the preceding claims,
characterized,
in that the distributor housing (10) has a third outlet opening (12a, 12b, 12c) opening into a third outflow line (15), the blocking element (30), in the first position of the shut-off element (30), passing the fluid through the third outlet opening (12a, 12b, 12c).
dadurch gekennzeichnet,
dass das Verteilergehäuse (10) eine Mehrzahl von weiteren Ausgangsöffnungen (12a, 12b, 12c) aufweist, wobei das Absperrelement (30) eine Mehrzahl von Stellungen einnehmen kann, wobei bei jeder dieser Mehrzahl von Stellungen des Absperrelements (30) der Durchfluss des Fluid durch zumindest eine der weiteren Ausgangsöffnungen (12a, 21 b, 12c) mittels des Absperrelements (30) verhindert wird, und wobei das Absperrelement (30) den Durchfluss des Fluid durch die erste Ausgangsöffnung (11) in jeder dieser Mehrzahl von Stellungen des Absperrelements (30) zulässt.Water separator (1) according to at least one of the preceding claims,
characterized,
in that the distributor housing (10) has a plurality of further outlet openings (12a, 12b, 12c), wherein the shut-off element (30) can assume a plurality of positions, wherein in each of these plurality of positions of the shut-off element (30) the flow of the fluid through at least one of the further outlet openings (12a, 21b, 12c) is prevented by means of the shut-off element (30), and wherein the shut-off element (30) controls the flow of the fluid through the first outlet opening (11) in each of these plurality of positions of the shut-off element (30 ) allows.
dadurch gekennzeichnet,
dass der Abstreifer aus zwei stegartigen, einander gegenüberliegenden Abschnitten besteht, die jeweils ausgehend von zwei gegenüberliegenden Seiten der ersten Öffnung (21) des Absperrelements (20) in die erste Öffnung (21) hineinragen.Water separator (1) according to at least one of the preceding claims,
characterized,
in that the scraper consists of two web-like, mutually opposite sections which in each case protrude into the first opening (21) from two opposite sides of the first opening (21) of the shut-off element (20).
dadurch gekennzeichnet,
dass eine einen Verflüssiger (210) aufweisende Wärmepumpe (200) vorhanden ist, wobei die erste Abflussleitung (14) der Wasserweiche (1) zumindest abschnittsweise als integraler Bestandteil des Verflüssigers (210) der Wärmepumpe (200) ausgebildet ist.Domestic appliance according to the preceding claim,
characterized,
a heat pump (200) having a condenser (210) is provided, wherein the first outflow line (14) of the water diverter (1) is formed, at least in sections, as an integral part of the condenser (210) of the heat pump (200).
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DE102016110365 | 2016-06-06 |
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CN110495838A (en) * | 2018-05-17 | 2019-11-26 | 青岛海尔洗碗机有限公司 | A kind of dish-washing machine division box and dish-washing machine |
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DE3324308A1 (en) * | 1983-07-06 | 1985-01-17 | Fritz Otto Ernst Dipl.-Ing. 6908 Wiesloch Schwenkler | Distributing valve |
EP0383028A2 (en) * | 1989-02-14 | 1990-08-22 | Licentia Patent-Verwaltungs-GmbH | Dishwashing machine compromising an electro-mechanic reversing device |
DE10133129A1 (en) * | 2001-07-07 | 2003-01-16 | Miele & Cie | Dishwasher water circulation pump has multiple outlets which may be selectively used by means of a solenoid |
WO2003005875A1 (en) * | 2001-07-07 | 2003-01-23 | Miele & Cie. Kg. | Dishwasher comprising spraying arms and a circulating pump |
EP2682040A1 (en) * | 2012-07-03 | 2014-01-08 | Miele & Cie. KG | Dishwasher and method for operating a dishwasher |
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CN110495836A (en) * | 2018-05-17 | 2019-11-26 | 青岛海尔洗碗机有限公司 | A kind of dish-washing machine division box, dish-washing machine and its control method |
CN110495838A (en) * | 2018-05-17 | 2019-11-26 | 青岛海尔洗碗机有限公司 | A kind of dish-washing machine division box and dish-washing machine |
CN110495838B (en) * | 2018-05-17 | 2022-11-01 | 青岛海尔洗碗机有限公司 | Dish washer water diversion device and dish washer |
CN110495836B (en) * | 2018-05-17 | 2023-02-28 | 青岛海尔洗碗机有限公司 | Water distribution device of dish washing machine, dish washing machine and control method of dish washing machine |
DE102018214805A1 (en) * | 2018-08-31 | 2020-03-05 | Magna Powertrain Bad Homburg GmbH | Conveyor |
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CN113226145A (en) * | 2018-12-20 | 2021-08-06 | 伊莱克斯电器股份公司 | Flow controller for dishwasher |
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