EP2998426B1 - Waschmaschine mit einem filterelement und einem klappenventil - Google Patents

Waschmaschine mit einem filterelement und einem klappenventil Download PDF

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Publication number
EP2998426B1
EP2998426B1 EP14184886.1A EP14184886A EP2998426B1 EP 2998426 B1 EP2998426 B1 EP 2998426B1 EP 14184886 A EP14184886 A EP 14184886A EP 2998426 B1 EP2998426 B1 EP 2998426B1
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EP
European Patent Office
Prior art keywords
valve
seat
washing machine
valve seat
receptacle
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EP14184886.1A
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English (en)
French (fr)
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EP2998426A1 (de
Inventor
Tiziano Zoppellari
Marco Maiero
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Electrolux Appliances AB
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Electrolux Appliances AB
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Priority to EP14184886.1A priority Critical patent/EP2998426B1/de
Publication of EP2998426A1 publication Critical patent/EP2998426A1/de
Application granted granted Critical
Publication of EP2998426B1 publication Critical patent/EP2998426B1/de
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering arrangements

Definitions

  • the invention relates to a washing machine (the expression "washing machine” including both “simple” washing machines, i.e. washing machines which can only wash and rinse laundry, and washing-drying machines, i.e. washing machines which can also dry laundry, both of the front-loading or top-loading type) with a draining circuit comprising a valve element adapted to selectively open and close the passage of liquid from a tub to the draining circuit, and a filter element for impeding that foreign bodies such as coins or buttons escaping the laundry could reach the draining pump.
  • a washing machine including both “simple” washing machines, i.e. washing machines which can only wash and rinse laundry, and washing-drying machines, i.e. washing machines which can also dry laundry, both of the front-loading or top-loading type
  • a draining circuit comprising a valve element adapted to selectively open and close the passage of liquid from a tub to the draining circuit, and a filter element for impeding that foreign bodies such as coins or buttons
  • EP1204792 discloses a washing machine, wherein an inlet of a draining circuit is fluidly connected to a sump.
  • a valve element is arranged between the sump and the inlet of the draining circuit. The valve element shuts off the sump from the draining circuit during a washing cycle by using a valve seat and a ball as closing element.
  • the ball is freely movable within a draining section of the draining circuit.
  • valve element of the above kind water within the draining circuit needs not be heated during a heating phase of a washing cycle of the washing machine, whereby the energy consumption of the washing machine is reduced.
  • Assembling of the draining circuit in a way that guarantees proper operation of the valve and long-term functionality of the closing state of the valve element may be a problem, as such a valve element however is a component in danger of failure, e.g. because of clogging. As such it needs servicing. Servicing however may be complicated by valve element design and mounting location and in the consequence cost intensive.
  • EP2503050 tries to solve above problem by providing a washing machine comprising a tub with a sump and a draining circuit, wherein the sump is fluidly connected to the draining circuit.
  • a filter element is provided, which is removably positionable in the sump, e.g. which can be removed from the sump by a user, e.g. for cleaning or replacement, and can be (re)inserted into the sump thereafter.
  • the sump is preferably formed integrally with the tub, such that no additional mounting or assembly step is necessary for mounting the sump at the tub.
  • the washing machine may preferably comprise a chamber for at least a portion of a draining pump, wherein the chamber is preferably integrally formed with the sump and the tub, such that fewer assembling steps and less assembly time for assembling the washing machine are required.
  • the washing machine disclosed in EP2503050 also comprises a valve element for selectively obstructing (or closing) a passage of liquid from the tub to the draining circuit. As such, the valve element is preferably arranged downstream the tub and upstream the draining circuit.
  • the valve element is adapted to seal or close the tub from the draining circuit, preferably in particular during a heating phase of a washing cycle of the washing machine.
  • the filter element comprises the valve element.
  • the valve element can for example be removed from the sump or be (re)inserted together with the filter element such that easy handling of the valve element is provided. As a consequence, serviceability of the washing machine is improved.
  • EP2746448 discloses a laundry treatment appliance.
  • the laundry treatment appliance comprises a rigid tub for containing laundry treatment liquids, the tub comprising a tub outlet for draining the treatment liquids therefrom, a manifold comprising a manifold inlet coupled with the tub outlet for receiving said treatment liquids, and a gasket arranged between said manifold inlet and said tub outlet for sealingly coupling thereof.
  • the laundry treatment appliance further comprises a floating valve, pivotally hinged to said gasket, adapted to swing between a closed position wherein the floating valve abuts a valve seat associated with the gasket thereby impeding the passage of the treatment liquids from said tub to said manifold, and an opened position wherein the floating valve is at least partially spaced from said valve seat thereby allowing the treatment liquids to pass from said tub to said manifold.
  • Said floating valve and said valve seat have different rigidity.
  • Valve element movement capabilities issues may also cause more serious drawbacks, especially in solutions, such as that disclosed in EP2503050 , wherein the valve element is operated within a meshed filter element. Indeed, being substantially freely movable within the filter element, the valve element, especially during its ascending movement, may experience friction with, until getting jammed into, the filter element mesh, so that the valve element may be not allowed to complete its ascending movement.
  • An aspect of the solution according to one or more embodiments of the invention relates to a laundry washing machine.
  • the laundry washing machine comprises a tub for containing treatment liquids, the tub comprising a sump fluidly connected or connectable to a draining circuit of the washing machine, and a valve/filter assembly adapted to be removably positioned in a filter seat provided in the sump for intercepting and filtering the treatment liquids while passing from said tub to said draining circuit.
  • Said valve/filter assembly comprises:
  • the valve/filter assembly comprises a gasket element arranged in such a way to provide a watertight connection between said valve element and said valve seat in said closed position of said valve element.
  • said valve element comprises a rigid core on which said gasket element is over-injected.
  • said valve seat comprises a rigid frame on which said gasket element is over-injected.
  • said valve element is pivotally hinged to said valve seat by a resilient connection comprising said gasket element, a layer of resilient material at least partially over injected on a rigid core of said valve element, and at least one flexible connecting element made in a single piece construction with said gasket element and said layer of resilient material.
  • said valve element is made of a resilient material and is pivotally hinged to said valve seat by a resilient connection comprising said valve element, said gasket element, and at least one flexible connecting element made in a single piece construction with said gasket element and said valve element.
  • the valve seat further comprises at least one protruding member adapted to be removably associated with at least one corresponding housing of said valve element for pivotally hinging said valve element to said valve seat in a removable manner.
  • the at least one protruding member is made in a single piece construction with the gasket element.
  • said valve/filter assembly comprises at least one fixing element adapted to removably fix both said receptacle to said valve seat and said valve/filter assembly to said filter seat.
  • the at least one fixing element is mechanically coupled to said receptacle and is elastically deformable, elastic deformation of the at least one fixing element allowing insertion and snap-fit fixation of said receptacle in said filter seat.
  • the valve seat further comprises at least one slot for allowing passage of the at least one fixing element therethrough during fixation of said valve seat to said receptacle.
  • At least part of the valve seat is adapted to rest, upon positioning said valve/filter assembly in said filter seat, on an inner flange provided in the sump and delimiting the inlet of said filter seat.
  • Said valve/filter assembly is positioned in said filter seat, and said at least one fixing element engages said inner flange for fixing the valve/filter assembly in said filter seat.
  • said valve/filter assembly comprises a locking element adapted to take a locking position wherein it prevents removal of the fixation of said receptacle to said a valve seat and of the fixation of said valve/filter assembly to said filter seat.
  • the locking element comprises at least one cap member removably fixable to said valve seat.
  • the at least one cap member in said locking position, covers said at least one slot and the at least one fixing element therethrough.
  • said valve element is provided with at least one wall that extends from a side of said valve element facing, in operation, the bottom of said receptacle, said at least one wall delimiting at least one air capturing chamber adapted to capture air thereby enhancing floating of said valve element.
  • another aspect of the invention relates to a washing machine comprising:
  • Figure 1 shows a sectional side view of a washing machine 100, for example for domestic use, according to an embodiment of the invention.
  • the washing machine may be a "simple" washing machine, i.e. a washing machine that can only wash and rinse laundry, or a washing-drying machine, i.e. a washing machine that can also dry laundry.
  • the washing machine 100 is of the front-loading type (anyway, it should be apparent from the following description that washing machines of the top-loading type may also benefit from the invention).
  • the washing machine 100 preferably comprises a substantially parallepiped-shaped cabinet 105, which is apt to contain (e.g., hydraulic, electronic and/or electromechanical) components for allowing washing machine operation - only the relevant ones for understanding the invention being discussed in the following.
  • a substantially parallepiped-shaped cabinet 105 which is apt to contain (e.g., hydraulic, electronic and/or electromechanical) components for allowing washing machine operation - only the relevant ones for understanding the invention being discussed in the following.
  • the washing machine 100 comprises, within the cabinet 105, a rotating, preferably perforated, drum 110 (e.g., substantially cylindrical-shaped) configured to rotate for tumbling laundry loaded therein.
  • a rotating, preferably perforated, drum 110 e.g., substantially cylindrical-shaped
  • the drum 110 is enclosed within a washing tub 115, preferably hollow-cylinder shaped, which is adapted to enclose the drum 110 and to contain treatment liquids (e.g., washing water, detergent-water solutions, or rinsing water) for laundry treatment.
  • the tub 115 comprises, e .g. at a bottom thereof, a sump 120 for canalizing the treating liquids thereinto (and allowing them to be drained, as discussed herebelow).
  • the sump 120 is fluidly connected or connectable to a draining circuit 125 of the washing machine 100, which is adapted to drain the treatment liquids (coming from the tub 115, through the sump 120) to the sewer network (not shown) - or to a treatment liquids re-circulating circuit of the washing machine 100 (not shown).
  • the draining circuit 125 preferably comprises a motor driven pump 130, preferably arranged downstream the sump 120, for promoting the draining of the treatment liquids, and a draining hose 135, preferably provided downstream the pump 130, for draining the treatment liquids into the sewer network (and/or to the treatment liquids re-circulating circuit, when provided).
  • the drain hose 135 advantageously comprises at least a substantially vertical part 135a extending at least partially at a height higher than the pump 130.
  • an appliance door 140 is provided ( e.g., at a front panel of the cabinet 105, in the illustrated example) for accessing the drum 110.
  • a valve/filter assembly 145 adapted to be removably positioned/fitted in the sump 120 is provided for intercepting and filtering the treatment liquids while passing from the tub 115 to the draining circuit 125.
  • the valve/filter assembly 145 is adapted to be removably positioned/fitted in a filter seat 150 of the sump 120.
  • the filter seat 150 comprises a sump inner flange 150 F , e.g. horizontally extending from vertical side walls of the sump 120, and a seat opening (delimited by said sump inner flange 150 F ) astride which the valve/filter assembly 145 is positioned.
  • the proposed valve/filter assembly 145 is configured to efficiently control (i.e., prevent or allow) passage of the treatment liquids (through an inlet thereof) from the tub 115 to the draining circuit 125 during washing machine 100 operation, while filtering the treatment liquids, when passage thereof is allowed, from possible foreign bodies and/or lint.
  • the washing machine 100 further comprises one or more lifters arranged within the drum 110 for turning laundry, such as the lifters 155,160.
  • the lifter 160 is advantageously additionally adapted for easy removal and insertion of the valve/filter assembly 145 ( e.g. for maintenance, replacement and/or other servicing operations).
  • the lifter 160 is preferably provided with a fixed, hollow lifter base 160 B arranged on ( i.e., whose hollow matches) a drum opening 110 OP , and with an openable (as illustrated), or removable, lifter lid 160 L for selectively covering/uncovering the lifter base 160 B (and, hence, the hollow thereof and the drum opening 110 OP ).
  • valve/filter assembly 145 access to the valve/filter assembly 145 is easily allowed by opening the appliance door 140, aligning the lifter 160 (and, hence, the drum opening 110 OP ) to the sump 120, and lifting (or removing) the lifter lid 160 L .
  • FIG 2A shows an exploded perspective side view of the valve/filter assembly 145 according to an embodiment of the invention. For the sake of description ease, such figure will be discussed together with Figures 2B-2G .
  • the valve/filter assembly 145 comprises a valve element (e.g., a floating valve) 205 for allowing/preventing passage of the treatment liquids from the tub 115 to the draining circuit 125 during washing machine 100 operation, and a filter element 210 for filtering foreign bodies and/or lint from the treatment liquids.
  • a valve element e.g., a floating valve
  • the pump 130 is activated for a short time interval long enough to allow some water to go up in the substantially vertical part 135a of the draining hose 135, but not long enough for allowing the spillage of this water from the draining hose 135, and then the pump 130 is deactivated; in this way the water column present in the substantially vertical part 135a of the draining hose 135 applies a pressure on the floating valve 205 in its closure direction, ensuring its closure.
  • the filter element 210 is preferably a basket, or meshed, filter element, namely it comprises a receptacle 210 R having an inlet 210 I for the access of the treatment liquids coming from the tub 115, and a filtering surface 210 FS through which said treatment liquids coming from the tub 115 can pass to said draining circuit 125, with such a filtering surface 210 FS that is adapted to retain within said receptacle 210 R foreign bodies entering the inlet 210 I .
  • the receptacle 210 R is preferably made of a material exhibiting both resilient deformation capabilities (by resilient deformation meaning that when forces causing deformation are no longer exerted, natural return to original shape takes place) and rigidity properties (hereinafter referred to as semi-rigid material for differentiating it from a rigid material having no, or negligible, resilient deformation capabilities, and from a resilient material having no, or negligible, rigidity properties), and preferably features a top open end being larger, along a longitudinal direction X, than the seat opening.
  • resilient deformation capabilities by resilient deformation meaning that when forces causing deformation are no longer exerted, natural return to original shape takes place
  • rigidity properties hereinafter referred to as semi-rigid material for differentiating it from a rigid material having no, or negligible, resilient deformation capabilities, and from a resilient material having no, or negligible, rigidity properties
  • the receptacle 210 R preferably made of low-density polyethylene, polypropylene, polycarbonate and/or other similar plastics, preferably features, from the open end thereof to a bottom end thereof, a ( e.g., rounded) progressively narrowing shaping, exception made for one ore more ( e.g. , two) projecting portions 210 P1 ,210 P2 (projecting along the longitudinal direction X).
  • the projecting portions 210 P1 ,210 P2 are made of a semi-rigid material, more preferably they are made of the same material as the receptacle 210 R , and even more preferably they are made in a single piece construction with it.
  • the projecting portions 210 P1 ,210 P2 that, thanks to resiliency thereof, deform to a certain extent upon passage through the seat opening, abut against the sump inner flange 150 F after such a passage has taken place, thus providing a clamping action and effectively preventing involuntary valve/filter assembly 145 unfitting from the filter seat 150 ( e.g., due to water column push action).
  • the valve/filter assembly 145 also comprises a valve seat 215, preferably comprising a rigid (e.g., plastics such as high-density polyethylene, or metal) or semi-rigid frame 215 F , and fixed or fixable to the open end of the receptacle 210 R .
  • a rigid e.g., plastics such as high-density polyethylene, or metal
  • semi-rigid frame 215 F e.g., plastics such as high-density polyethylene, or metal
  • the valve seat 215 is preferably elongated ring-shaped (whose central hole advantageously defines the inlet of the valve/filter assembly 145 selectively obstructed by the floating valve 205, as discussed below), and is preferably adapted to be hingedly arranged/mounted on the open end of the receptacle 210 R .
  • the valve seat 215 is, in use, operatively associated with (preferably, mechanically coupled to) the floating valve 205, and floatably contained within the receptacle 210 R .
  • the floating valve 205 which may either comprise a rigid or semi-rigid core 205 C onto which a layer of resilient material (not shown) is at least partially over injected, or which may be substantially ( i.e., approximately) completely made of a rigid, semi-rigid or resilient material, is pivotally hinged to the valve seat 215 so as to swing relative thereto between closed and opened positions.
  • Hinging of the floating valve 205 makes floating valve 205 movement capabilities substantially unaffected, or at least much less affected than prior art solutions, by both presence of foreign bodies unavoidably accumulating in the receptacle 210 R and mechanical vibrations unavoidably produced by washing machine operation.
  • hinging of the floating valve 205 avoids that the floating valve 205 experiences friction with, until getting jammed into, the receptacle 210 R mesh.
  • absence (or at least strong reduction) of vibrations and/or frictions affecting the floating valve 205 provides noise reduction.
  • a gasket element 220 is arranged in such a way to provide a watertight connection between the floating valve 205 and the valve seat 215 in the closed position.
  • the gasket element 220 is preferably provided between (at least part of) a lower surface of the valve seat 215 facing (in use) the floating valve 205 and the receptacle 210 R , so that in the closed position the floating valve 205 abuts the valve seat 215 with at least partial interposition of the gasket element 220.
  • the gasket element 220 is preferably made of a resilient material, being for example made of rubber, silicone or another resilient polymer.
  • the gasket element 220 is over-injected (at least partially) on the valve seat frame 215 F .
  • the gasket element 220 and the layer of resilient material at least partially over injected on the floating valve core 205 C may be advantageously formed in a single piece construction.
  • a portion of the gasket element 220 is over-injected on the floating valve core 205 C and another portion of the gasket element 220 is over-injected on the valve seat frame 215 F (so as to have a distributed gasket element partially over-injected over and connecting the valve core 205 C and the valve seat frame 215 F ).
  • the floating valve 205 In the opened position of the floating valve 205 (illustrated in the left drawing of Figure 2D ), the floating valve 205, upon failing the push action thereon (e.g., due to water column discharge caused by pump 130 activation) is at least partially spaced from the valve seat 215, thereby allowing passage of the treatment liquids from the tub 115 to the draining circuit 125 through the filtering surface 210 FS of the receptacle 210 R .
  • the treatment liquids allowed to pass when the floating valve 205 is in the opened position are then intercepted by filtering surface 210 FS of the receptacle 210 R , and hence filtered from foreign bodies and/or lint, before being drained into the draining circuit 125.
  • the floating valve 205 in order to achieve hinging of the floating valve 205 to the valve seat 215, the floating valve 205 preferably comprises one or more, e.g. two housings 205 H1 ,205 H2 , whereas the valve seat 215 preferably comprises corresponding protruding members (preferably, two pegs) 220 P1 ,220 P1 each one adapted to be fitted into a corresponding housing 205 H1 ,205 H2 .
  • the pegs 220 P1 ,220 P1 are made of a resilient material, more preferably they are made of the same material as the gasket element 220, and even more preferably they are made in a single piece construction with it.
  • the pegs 220 1 ,220 P2 can be advantageously made in a single piece construction with both the gasket element 220 and a layer of resilient material at least partially over injected on the valve rigid core 205 C , so that the gasket element 220, the layer of resilient material, and the pegs 220 P1 ,220 P2 form a resilient connection for pivotally hinging the floating valve 205 to the valve seat 215.
  • the floating valve 205 can be advantageously made of a resilient material
  • the floating valve 205, the gasket element 220, and the pegs 220 P1 ,220 P2 may be made in a single piece construction, so as to form, as a whole, a resilient connection pivotally hinging the floating valve 205 to the valve seat 215.
  • each peg 220 P1 ,220 P1 preferably features an ( e.g ., enlarged) interference portion 220 PE1 ,220 PE2 adapted to elastically deform while passing through the housings 205 H1 ,205 H2 , and to avoid, after its passage, that the floating valve 205 slides down along the pegs 220 P1 ,220 P1 .
  • said fitting is with mechanical play, which compensates unavoidable mechanical tolerances and facilitates opening of the floating valve 205 - indeed, thanks to their resiliency, pegs 220 P1 ,220 P1 inflect due to floating valve 205 weight. Pegs 220 P1 ,220 P1 inflection, apart from further facilitating opening of the floating valve 205, also provides a dumping effect against damages and noise that contact between floating valve 205 and the receptacle 210 R could cause.
  • the pegs 220 P1 ,220 P1 also feature a noise-suppression capability.
  • Elongated pegs such as the illustrated pegs 220 P1 ,220 P1 , are in fact adapted, in use, to be interposed between the floating valve 205 and the a receptacle 210 R , so as to soften (thereby suppressing noise caused by, and preserving integrity of) the floating valve 205 banging against the receptacle 210 R when switching from closed to opened positions and during highly stressing operations of the washing machine 100.
  • N 8 in the example at issue
  • Cavities 205 C i are delimited by one or more walls extending from a rear side of the floating valve 205 ( i.e., the side intended to intercept the water column and the air from the discharge system) opposite to a front, abutment side thereof ( i.e., the side intended to abut, at least partly, against the valve seat 215 in the closed position).
  • a substantially circular outer wall 205 OW and four rectilinear inner walls (globally denoted by the number reference 205 IW ) crosspiece arranged within the outer wall 205 OW are advantageously provided, which define eight cavities 205 C1 -205 C8 - however, a lower number of rectilinear inner walls, as well as different shaping and arrangement thereof, can be provided in alternative advantageous embodiments, not shown.
  • valve seat 215 (together with the associated floating valve 205) is advantageously mounted, preferably hinged, on the open end of the receptacle 210 R , preferably by means of hinge elements 210 H and 215 H1 provided, respectively, on the open end of the receptacle 210 R (preferably, made in a single piece construction with it) and on the lower surface of the valve seat 215 (preferably, made in a single piece with it).
  • Provision of the hinge elements 210 H ,215 H1 allows the floating valve 205 /valve seat 215 group to be pivotally rotated (about a corresponding hinge axis, not shown) onto the open end of the receptacle 210 R (as illustrated in the top drawing of Figure 2F ), and away from it (as illustrated in the bottom drawing of Figure 2F ), so that opening and servicing of the valve/filter assembly 145 is allowed without having to completely detach the valve seat 215 therefrom.
  • the valve/filter assembly 145 further advantageously comprises one or more removable fixing elements adapted for removably fixing both said receptacle 210 R to the valve seat 215 and the valve/filter assembly 145 to the filter seat 150 (as discussed herebelow).
  • said one or more removable fixing elements comprise at least one lip 210 L1 ,210 L2 provided at said receptacle 210 R and advantageously elastically deformable in such a way to allow, by elastic deformation thereof, the insertion and the snap-fixing fixation of said receptacle 210 R in said filter seat 150.
  • two lips 210 L1 ,210 L2 extend upwards from opposite sides of the open end of the receptacle 210 R (thus resulting substantially, i . e . approximately, parallel to each other), preferably (as illustrated) at the projecting portions 210 P1 ,210 P2 , respectively.
  • the lips 210 L1 ,210 L2 are made of a semi-rigid material, more preferably they are made of the same material as the receptacle 210 R , and even more preferably they are made in a single piece construction with it.
  • valve seat 215 is preferably intended to contact the sump inner flange 150 F thus preventing further fitting of the valve/filter assembly 145 into the seat opening.
  • the valve seat 215 (or at least part thereof) is advantageously adapted to rest, upon positioning said valve/filter assembly 145 in said filter seat 150, on the sump inner flange 150 F , while the removable fixing elements ( i.e., the lips 210 L1 ,210 L2 ) engage the sump inner flange 150 F for fixing of the valve/filter assembly 145 in the filter seat 150.
  • the gasket element 220 extends over the whole lower surface of the valve seat 215, so that the valve seat 215 (i.e., the peripheral region thereof) advantageously contacts the sump inner flange 150 F by interposition of the gasket element 220, which greatly improves sealing properties.
  • the valve seat 215 preferably comprises one or more ( e.g. , two) slots 215 S1 ,215 S2 adapted to allow passage of the lips 210 L1 ,210 L2 therethrough when the valve seat 215 is fixed to the receptacle 210 R ( e.g., in the advantageous embodiment illustrated in the attached figures, when the floating valve 205 /valve seat 215 group is pivotally rotated onto the open end of receptacle 210 R ).
  • one or more e.g. , two) slots 215 S1 ,215 S2 adapted to allow passage of the lips 210 L1 ,210 L2 therethrough when the valve seat 215 is fixed to the receptacle 210 R ( e.g., in the advantageous embodiment illustrated in the attached figures, when the floating valve 205 /valve seat 215 group is pivotally rotated onto the open end of receptacle 210 R ).
  • the lips 210 L1 ,210 L2 are allowed to pass through the slots 215 S1 ,215 S2 and to engage the valve seat 215 (by abutting against slots 215 S1 ,215 S2 wall) when said force is released (dually, as discussed above, the valve/filter assembly 145, i.e., the receptacle 210 R thereof, is allowed to pass, when a force is applied to the lips 210 L1 ,210 L2 , into the seat opening and to engage said filter seat 150 when said force is released).
  • slots 215 S1 ,215 S2 arrangement, shape and size correspond respectively to lips 210 L1 ,210 L2 arrangement, shape and size, and implicitly provide also a first indication about alignment and orientation of the valve seat 215 on the receptacle 210 R ).
  • the slots 215 S1 ,215 S2 preferably rectangular-shaped, are arranged at opposite sides of the valve seat 215.
  • alignment of the valve seat 215 on the receptacle 210 R is also assisted by a number of ( e.g., four) flaps 210 F1 -210 F4 (preferably made in a single piece construction with the receptacle 210 R , and arranged along, and preferably extending upwards from, the open end thereof) and by a number of ( e.g., four) corresponding wall portions 215 W1 ,215 W4 (preferably made in a single piece with the valve seat 215, and preferably arranged along, and extending downwards from, the lower surface of the valve seat 215), adapted to cooperate ( e.g ., by slide contact) with each other.
  • a number of ( e.g., four) flaps 210 F1 -210 F4 preferably made in a single piece construction with the receptacle 210 R , and arranged along, and preferably extending upwards from, the open end thereof
  • the valve/filter assembly 145 further preferably comprises a locking element 225 adapted to be interlocked with the valve seat 215.
  • the locking element 225 is preferably adapted to be locked on the valve seat 215 ( i.e., on an upper surface thereof opposite the lower surface) so as to press/push the valve seat 215 on the sump inner flange 150 F (and, especially, the gasket element portion therebetween), thus providing effective retaining and sealing actions.
  • the locking element 225 is made of a rigid or semi-rigid material, so as to provide effective pressing/pushing action and, hence, ensuring mechanical stability to the valve/filter assembly 145.
  • the locking element 225 is further adapted to prevent, in the locking position (shown in the top drawing of Figure 2F and in the bottom drawing of Figure 2G ), removal of the fixation of the receptacle 210 R to said a valve seat 215 and of the fixation of said valve/filter assembly 145 to said filter seat 150.
  • one or more (e.g ., two) cap members 225 C1 ,225 C2 removably fixable to said valve seat 215 are preferably provided for covering at least a part of the valve seat 215, and even more preferably (as illustrated in Figures 2A , 2B , 2C , 2D and 2F ) the cap members 225 C1 ,225 C2 are shaped and sized for covering the slots 215 S1 ,215 S2 and the lips 210 L1 ,210 L2 therethrough.
  • cap members 225 C1 ,225 C2 Thanks to the cap members 225 C1 ,225 C2 , accidental access to the lips 210 L1 ,210 L2 is prevented, so that fixation of the receptacle 210 R to the valve seat 215 and fixation of the valve/filter assembly 145 to the filter seat 150 is ensured.
  • each cap member 225 C1 ,225 C2 is adapted to be fitted into a corresponding peripheral recess 215 SR1 ,215 SR2 of the slot 215 S1 ,215 S2 exposing a corresponding region of the gasket element 220 underneath it.
  • the cap members 225 C1 ,225 C2 are made of a rigid or semi-rigid material, high friction is experienced upon contact with the gasket element 220, so that increased sealing action is achieved, and treatment liquid leakages are prevented through the slots 215 S1 ,215 S2 .
  • the cap members 225 C1 ,225 C2 are made in a single piece with the locking element 225, so that easy covering is automatically achieved upon interlocking between the locking element 225 and the valve seat 215.
  • the locking element 225 is shaped and sized so as not to obstruct or make it difficult the passage of the treatment liquids through the valve/filter assembly 145 ( i.e., through the inlet thereof).
  • the locking element 225 is preferably in the form of a shaft extending, along a longitudinal direction Y substantially orthogonal to the transversal direction X, across opposite side ends of the valve seat 215, and preferably having, along the transversal direction X, a size lower than valve/filter assembly inlet size.
  • the locking element 225 is hingedly mounted on the upper surface of the valve seat 215, which allows unfitting, opening and servicing of the valve/filter assembly 145 without having to completely detach the locking element 225 from the valve seat 215 (as also visible in the bottom drawing of Figure 2F ).
  • hinge elements 215 H2 and 225 H are preferably provided on the upper surface of the valve seat 215 (preferably, made in a single piece with it) and as an end portion of the locking element 225, respectively.
  • the snap-fit mechanism preferably comprises, at valve seat 215 side, a guiding element 215 G provided with a housing ( e.g ., a slot) 215 GS , and, at locking element 225 side ( e.g. , opposite the hinge element 225 H ), a hand-grip element 225 HG provided with a cantilevered portion 225 HGc .
  • the hand-grip element 225 HG is preferably adapted to slide within the guiding element 215 G until the cantilevered portion 225 HGc snap-fit engages the guiding element slot 215 GS .
  • sizing and/or shaping of the snap-fit mechanism directly affect the pressing/pushing action the locking element 225 is able to impart on the valve seat 215 when interlocked to each other, thus directly affecting compression of the gasket portion between the valve seat 215 and the sump inner flange 150 F , and hence sealing action thereof against treatment liquids leakages.
  • the guiding element 215 G is made in a single piece construction with the valve seat 215, and the hand-grip element 225 HG is made in a single piece construction with the locking element 225.
  • at least one between the valve seat 215 and the locking element 225 is conveniently made of a semi-rigid material, so that (even slight) resiliency allows imparting a deformation causing the cantilevered portion 225 HGc to snap-fit engage the guiding frame slot 215 GS easily.
  • the valve seat 215 and the locking element 225 may instead be made both of a rigid material, as the elbow-shaped portion may advantageously give, alone, the hand-grip element 225 HG with a sufficient degree of deformation capabilities.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (15)

  1. Waschmaschine (100), umfassend:
    einen Becher (115) zum Aufnehmen von Behandlungsflüssigkeiten, wobei der Becher (115) einen Sammelbehälter (120) umfasst, der fluid mit einem Ablaufkreis (125) der Waschmaschine (100) verbunden ist, und eine Ventil/Filtergruppe (145), die dafür ausgelegt ist, entfernbar in einem Filtersitz (150) angeordnet zu werden, der im Sammelbehälter (120) um Abfangen und Filtern der Behandlungsflüssigkeiten vorgesehen ist, während sie vom Becher (115) zum Ablaufkreis (125) laufen,
    wobei die Ventil/Filtergruppe (145) umfasst:
    - einen Behälter (210R), der einen Einlass (210I) für den Zutritt der Behandlungsflüssigkeiten, die vom Becher (115) kommen, und eine Filterfläche (210FS) hat, durch die die Behandlungsflüssigkeiten, die vom Becher (115) kommen, zum Ablaufkreis (125) strömen können, wobei die Filterfläche (210FS) dafür ausgelegt ist, Fremdkörper, die in den Zugang (210I) eintreten, innerhalb des Behälters (210R) zurückzuhalten, und
    - einen Ventilsitz (215), der am offenen Ende des Behälters (210R) befestigt ist, und
    - ein Ventilelement (205), das zwischen einer geschlossenen Position, bei der das Ventilelement (205) am Ventilsitz (215) anliegt, wodurch der Durchlauf von Flüssigkeit vom Becher (115) zum Ablaufkreis (125) verhindert wird, und einer geöffneten Position beweglich ist, in der das Ventilelement (205) zumindest teilweise einen Abstand zum Ventilsitz (215) hat, wodurch Flüssigkeit vom Becher (115) zum Ablaufkreis (125) durch die Filterfläche (210FS) des Behälters (210R) fließen kann,
    dadurch gekennzeichnet, dass
    das Ventilelement (205) schwenkbar am Ventilsitz (215) gelagert ist, um so innerhalb des Behälters (210R), wenn der Ventilsitz (215) am Behälter (210R) befestigt ist, zwischen geschlossenen und offenen Positionen zu schwingen.
  2. Waschmaschine (100) nach Anspruch 1, wobei die Ventil/Filtergruppe (145) ein Dichtungselement (220) umfasst, das so angeordnet ist, dass es für eine wasserdichte Verbindung zwischen dem Ventilelement (205) und dem Ventilsitz (215) in der geschlossenen Position des Ventilelementes (205) sorgt.
  3. Waschmaschine (100) nach Anspruch 2, wobei das Ventilelement (205) einen starren Kern (205C) umfasst, auf den das Dichtungselement (220) übergespritzt ist.
  4. Waschmaschine (100) nach Anspruch 2, wobei der Ventilsitz (215) einen starren Rahmen (215F) umfasst, auf den das Dichtungselement (220) übergespritzt ist.
  5. Waschmaschine (100) nach Anspruch 3 oder 4, wobei das Ventilelement (205) schwenkbar am Ventilsitz (215) durch eine elastische Verbindung befestigt ist, die das Dichtungselement (220) umfasst, eine Schicht von belastbarem Material, das zumindest teilweise auf einen starren Kern (205C) des Ventilelementes (205) übergespritzt ist, und mindestens ein flexibles Verbindungselement (220P1,220P2), das in einer einteiligen Konstruktion mit dem Dichtungselement (220) und der Schicht aus elastischem Material hergestellt ist.
  6. Waschmaschine (100) nach Anspruch 3 oder 4, wobei das Ventilelement (205) aus einem elastischen Material hergestellt ist und schwenkbar am Ventilsitz (215) durch eine elastische Verbindung befestigt ist, die das Ventilelement (205), das Dichtungselement (220) und mindestens ein flexibles Verbindungselement (220P1,220P2) umfasst, das in einer einteiligen Konstruktion mit dem Dichtungselement (220) und dem Ventilelement (205) hergestellt ist.
  7. Waschmaschine (100) nach einem der Ansprüche 1 bis 4, wobei der Ventilsitz (215) ferner mindestens ein vorstehendes Element (220P1,220P2) umfasst, das dafür ausgelegt ist, lösbar mit mindestens einem entsprechenden Gehäuse (205H1,205H2) des Ventilelementes (205) verbunden ist, um das Ventilelement (205) schwenkbar am Ventilsitz (215) in einer abnehmbaren Weise zu befestigen.
  8. Waschmaschine (100) nach Anspruch 7, wenn sie von Anspruch 2 oder 4 abhängt, wobei das mindestens eine vorragende Element (220P1,220P2) in einer einteiligen Konstruktion mit dem Dichtungselement (220) hergestellt ist.
  9. Waschmaschine (100) nach einem der vorherigen Ansprüche, wobei die Ventil/Filtergruppe (145) mindestens ein Befestigungselement (210L1,210L2) umfasst, das dafür ausgelegt ist, sowohl den Behälter (210R) am Ventilsitz (215) als auch die Ventil/Filtergruppe (145) am Filtersitz (150) lösbar zu befestigen.
  10. Waschmaschine (100) nach Anspruch 9, wobei das mindestens eine Befestigungselement (210L1,210L2) mechanisch mit dem Behälter (210R) verbunden ist und elastisch verformbar ist, wobei die elastische Verformung des mindestens einen Befestigungselementes (210L1,210L2) das Einführen und die Schnappmontage des Behälters (210R) in den Filtersitz (150) ermöglicht.
  11. Waschmaschine (100) nach Anspruch 9 oder 10, wobei der Ventilsitz (215) ferner mindestens einen Schlitz (215S1,215S2) umfasst, um den Durchgang des mindestens einen Befestigungselementes (210L1,210L2) durch denselben während der Befestigung des Ventilsitzes (215) am Behälter (210R) zu ermöglichen.
  12. Waschmaschine (100) nach einem der Ansprüche 9 bis 11, wobei mindestens ein Teil des Ventilsitzes (215) dafür ausgelegt ist, bei der Positionierung der Ventil/Filtergruppe (145) im Filtersitz (150) auf einem Innenflansch (150F) zu ruhen, der im Sammelbehälter (120) vorgesehen ist und den Einlass des Filtersitzes (150) begrenzt, wobei, wenn die Ventil/Filtergruppe (145) im Filtersitz (150) positioniert ist, das mindestens eine Befestigungselement (210L1,210L2) in den Innenflansch (150F) zum Befestigen der Ventil/Filtergruppe (145) im Filtersitz (150) eingreift.
  13. Waschmaschine (100) nach einem der vorherigen Ansprüche, wobei die Ventil/Filtergruppe (145) ein Verriegelungselement (225) umfasst, das dafür ausgelegt ist, eine Verriegelungsposition einzunehmen, wobei es das Aufheben der Befestigung des Behälters (210R) am Ventilsitz (215) und der Befestigung der Ventil/Filtergruppe (145) am Filtersitz (150) verhindert.
  14. Waschmaschine (100) nach Anspruch 13, wobei das Verriegelungselement (225) mindestens ein Deckelelement (225C1,225C2) umfasst, das lösbar am Ventilsitz (215) befestigt werden kann.
  15. Waschmaschine (100) nach Anspruch 14, wenn sie von Anspruch 11 abhängt, wobei das mindestens eine Deckelement (225C1,225C2) in der Verriegelungsposition mindestens einen Schlitz (215S1,215S2) und das mindestens eine Befestigungselement (210L1,210L2) durch es hindurch abdeckt.
EP14184886.1A 2014-09-16 2014-09-16 Waschmaschine mit einem filterelement und einem klappenventil Active EP2998426B1 (de)

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US11993891B2 (en) 2022-02-14 2024-05-28 Whirlpool Corporation Laundry treating appliance with foreign object barrier

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WO2020251513A2 (en) * 2019-06-14 2020-12-17 Arcelik Anonim Sirketi A washing machine comprising a filtering member
SE545374C2 (en) * 2021-06-30 2023-07-25 Mimbly Ab Intermediate storage device for laundry systems
US20230272575A1 (en) * 2022-02-28 2023-08-31 Whirlpool Corporation Laundry treating appliance with foreign object barrier

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DE19935987A1 (de) 1999-07-30 2001-02-01 Bsh Bosch Siemens Hausgeraete Wäschebehandlungsmaschine
ES2347114B1 (es) * 2008-12-12 2011-08-18 Bsh Electrodomesticos España, S.A. Maquina lavadora.
EP2426247A1 (de) * 2010-09-02 2012-03-07 Electrolux Home Products Corporation N.V. Waschmaschine
EP2503050B1 (de) 2011-03-24 2013-12-18 Electrolux Home Products Corporation N.V. Waschmaschine mit einem Filterelement
EP2746448A1 (de) * 2012-12-21 2014-06-25 Electrolux Home Products Corporation N.V. Verbessertes Ablasssystem für die Wäschebehandlungsanwendung
EP2746447B1 (de) * 2012-12-21 2020-04-22 Electrolux Home Products Corporation N.V. Waschmaschine mit Ablassverteiler, umfassend eine Pumpenbaugruppe

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US11993891B2 (en) 2022-02-14 2024-05-28 Whirlpool Corporation Laundry treating appliance with foreign object barrier

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