EP3427629B1 - Lave-vaisselle, en particulier lave-vaisselle électroménager - Google Patents

Lave-vaisselle, en particulier lave-vaisselle électroménager Download PDF

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Publication number
EP3427629B1
EP3427629B1 EP18183204.9A EP18183204A EP3427629B1 EP 3427629 B1 EP3427629 B1 EP 3427629B1 EP 18183204 A EP18183204 A EP 18183204A EP 3427629 B1 EP3427629 B1 EP 3427629B1
Authority
EP
European Patent Office
Prior art keywords
spray arm
standpipe
dishwasher
screening device
sieve
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.)
Active
Application number
EP18183204.9A
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German (de)
English (en)
Other versions
EP3427629A1 (fr
Inventor
Volker Marks
Stefan Tappe
Stefan Havermann
Walter Assmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3427629A1 publication Critical patent/EP3427629A1/fr
Application granted granted Critical
Publication of EP3427629B1 publication Critical patent/EP3427629B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays
    • 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
    • A47L15/4202—Water filter means or strainers

Definitions

  • the invention relates to a dishwasher, in particular in the embodiment of a household dishwasher, with a washing compartment which provides a washing compartment and serves to hold items to be cleaned, a spray arm which is rotatably arranged within the washing container for applying washing liquor to the dishes, a collecting pan into which the washing container is placed flows in terms of flow technology and a sieve device that can be inserted into the collecting pot.
  • Dishwashers of the type mentioned at the outset are well known per se from the prior art, which is why a separate documentary proof is not required at this point.
  • Dishwashers of the generic type have a washing container which provides a washing compartment.
  • This wash cabinet is accessible by the user via a loading opening which can be closed in a fluid-tight manner by means of a pivotably mounted wash cabinet door.
  • the washing container serves to hold items to be cleaned, which in the case of a domestic dishwasher can be, in particular, dishes, cutlery and / or the like.
  • the dishwasher has a spray device on the wash cabinet side for loading wash ware with wash liquor.
  • This spray device generally provides rotatable spray arms, typically two or three such spray arms being provided.
  • the washware to be cleaned is loaded with wash liquor by means of rotating spray arms.
  • a circulation pump is provided for the purpose of supplying the spray arms with wash liquor, which is connected on the one hand to the collection pot and on the other hand to the spray arms in terms of flow technology.
  • the washing liquor dispensed by the spray device collects in the collecting pot into which the washing container flows out in terms of flow.
  • the circulation pump conveys itself in the collection pot collecting washing liquor to the spray arms of the spraying device, from where the washing liquor is then dispensed onto the wash ware to be cleaned.
  • the collecting pot into which the washing container opens, is separated from the spray space provided by the washing container by a sieving device.
  • the rinsing liquor circulated in the intended use by the circulating pump therefore only collects in the collecting pot after it has passed the sieving device inserted in the collecting pot. Food residues, dirt particles and / or similar contaminants are retained by the sieving device, so that a washing liquor cleaned to this extent by sieving is circulated.
  • a sieve device typically comprises a coarse sieve, a fine sieve and a flat sieve.
  • the contaminants retained by the screening device must be removed manually by the user after a washing program has been completed and then disposed of.
  • the pores of the screening device may become clogged over time, so that a manual cleaning of the screening device by the user is required.
  • the sieve device must be removed from the collecting pot on the user side and cleaned, for example in a sink under running water.
  • the screening device is not always easily accessible whether the spraying device provided on the washing area side, for example when a spray arm hinders user-side access to the screening device as a result of its end position assumed after the end of the last washing program. In this case, the spray arm must first be rotated by the user for unhindered access to the screening device.
  • the sieve device can only be reached uncomfortably by a user, since it is arranged in the collecting pot, that is to say in the region of the bottom part of the washing container.
  • the US 2015/0352472 A1 discloses a dishwasher with a collecting pot and a sieve device which can be inserted into the collecting pot and which, in the final assembled state, is penetrated by a standpipe which is used to supply washing liquor to the spray arm, the spray arm being detachably arranged on the end of the standpipe, by actuating a Locking element a common locking and unlocking of the spray arm and screen device can be effected.
  • the US 3323529 A and the US 5700329 A show a dishwasher with a collection pot and a sieve device inserted into the collection pot, which is penetrated by a standpipe, which is used to supply washing liquor to the spray arm.
  • the object of the invention is to further develop a dishwasher of the type mentioned at the outset, that simplified handling of the screening device is permitted, in particular for cleaning purposes.
  • the dishwasher according to the invention has a washing compartment which provides a washing compartment and is used to hold the items to be cleaned, a spray arm which is rotatably arranged within the washing container to apply washing liquor to the items to be washed, a collecting pot into which the washing container flows in terms of flow technology, and a sieving device which can be inserted into the collecting pot on.
  • the spray arm is connected in terms of flow to a standpipe on the device side, so that circulated washing liquor can reach the spray arm with the standpipe being connected in terms of flow. It is provided according to the invention that the spray arm is detachably arranged on the end of the standpipe. The spray arm can therefore be detached from the standpipe if necessary so that the spray arm can be removed from the standpipe.
  • the sieve device In the final assembled state, the sieve device is clamped in a sandwich-like manner between the collecting pot, that is to say its bottom and the spray arm arranged at the end of the standpipe. In the case of removal by the user, the spray arm is to be detached from the standpipe, which means unhindered access and removal of the Screening device allowed.
  • the configuration according to the invention therefore makes it possible not only to remove the screening device, but also, if necessary, the spray arm. This allows not only cleaning the spray device, but also cleaning the spray arm. It is also advantageous from the design point of view that the spray arm can be easily reached by the user regardless of the position and can therefore be detached from the standpipe. As soon as this has been done, not only the spray arm can be easily removed by the user, but also the sieve device underneath in the installed state. The configuration according to the invention therefore also allows a screen device to be cleaned to be removed easily by the user.
  • the reinstallation of the screening device is also possible in a simple manner, since it is only to be introduced into the collecting pot in the intended manner.
  • the spray arm is then to be placed on the end of the standpipe, the sieve device also being fixed in position by arranging the spray arm on the standpipe. Because in the final assembled state, the sieve device is clamped between the spray arm arranged at the end of the standpipe on the one hand and the bottom of the collecting pot on which the sieve device rests, on the other hand.
  • the sieve device proposed by the invention is rotationally symmetrical in accordance with a preferred embodiment.
  • the sieve device in the final assembled state, is preferably penetrated centrally by the standpipe, which is used to supply the washing liquor to the spray arm.
  • the screens of the screening device are therefore preferably formed around a common central axis. This central axis coincides with the device-side standpipe, which passes through the rotationally symmetrical sieve device in the center in the final assembled state.
  • a rotationally symmetrical sieve device enables an evenly distributed flow of circulated washing liquor into the collecting pot, so that the sieve device is evenly contaminated in the event of contamination.
  • the rotationally symmetrical arrangement also has the advantage that the clamping force acting on the screening device in the final assembled state is equally distributed over the screening device, so that a permanently secure positional positioning of the screening device is ensured. In particular, wash-down effects like this can be avoided with regard to the screens of previously known screening devices may possibly occur.
  • a locking element which can be designed, for example, as a union nut, is used for the releasable arrangement of the spray arm on the standpipe.
  • the standpipe and the union nut preferably cooperate via a bayonet catch, which is why the union nut has a part of a bayonet catch designed to correspond to the configuration of the standpipe serving as an abutment for the spray arm.
  • the locking element which is designed, in particular, as a union nut, serves as a central actuating element in order to release the spray arm from the standpipe as intended, with only one hand movement.
  • the construction according to the invention thus allows the spray arm and sieve device to be removed and then cleaned in a simple manner after a single actuation of the locking element.
  • the locking element serves as a means to secure the spray arm and sieve device in the same position. In particular, actuation of the locking element can effect a common locking and / or unlocking of the spray arm and sieve device.
  • the union nut When used as intended, the union nut interacts with the standpipe.
  • the standpipe has a section on the union nut side which is the opposite of the bayonet fitting part of the union nut. In the assembled state, these two parts form the bayonet lock, which is designed to position the union nut securely on the standpipe.
  • the union nut has an edge channel open on the sieve device side.
  • the screen device engages in this edge channel in the final assembled state. Not only is the sieve device clamped between the bottom of the collecting pot and spray arm in the direction of the central axis of the sieve device, it is also secured in a direction transverse to the central axis. Because the positive engagement of the screening device in the edge channel of the union nut fixes the screening device in relation to the union nut and thus also in relation to the stationary standpipe.
  • the clamping of the sieve device between the spray arm and the bottom of the collecting pot is preferably done with resilient deformation of the screening device.
  • This resilient deformation of the sieve device ensures that the sieve device, when fully assembled, presses against the union nut fixed in position on the standpipe in the height direction of the central axis.
  • the bayonet lock formed between the union nut and the standpipe is thus subjected to a force, which counteracts an unintentional loosening of the bayonet lock by, for example, vibrations.
  • the sieve device has a coarse sieve, a fine sieve and a flat sieve, which are designed to be removable from one another, and are preferably arranged concentrically in the final assembled state. This ensures that all sieves of the sieving device are aligned centrally with respect to the central axis of the sieving device.
  • the coarse screen interacts with the union nut.
  • the coarse screen is equipped with an edge on the union nut side, which in the final assembled state engages positively in the edge channel provided by the union nut.
  • the marginal edge of the coarse sieve and the marginal channel of the union nut are matched to one another in their geometric dimensions in such a way that a relative movement transverse to the central axis of the sieving device is effectively prevented.
  • the union nut and the coarse sieve have corresponding position markings. These serve to enable the user to visually check in a simple manner whether the union nut is properly aligned with respect to its coarse sieve relative to the coarse sieve, so that it is properly arranged on the standpipe, ie there is a properly secured arrangement of the spray arm.
  • the union nut preferably has at least one through opening or a transparent section through which a position marking carried by the coarse sieve is visible, at least when properly aligned, in particular when the union nut is rotated relative to the coarse sieve.
  • the position marker carried by the union nut can be formed by the through opening or the transparent section itself.
  • the position marking carried by the coarse sieve is positioned centrally within the through opening or the transparent section provided by the union nut.
  • the coarse screen can additionally have a separate position marking around the center of the through opening or of the transparent section. This enables an even better comparison of the relative positioning of the union nut and coarse sieve. In this exemplary embodiment, there is no need to provide a position marking on the flat screen.
  • the invention further proposes a spray device for a dishwasher, in particular for a dishwasher of the type described above, with a spray arm rotatably arranged in the final assembled state and with a means for releasably arranging the spray arm on an abutment on the machine side.
  • the spray device thus provides at least one spray arm which is designed to be both rotatable and detachable.
  • a means is provided according to the invention that serves for the releasable arrangement of the spray arm on the associated abutment of the dishwasher.
  • the detachable arrangement of the spray arm has the advantage of being able to remove the spray arm if necessary. Such removal is desired by the user, for example, in order to be able to clean the spray arm independently of the execution of a washing program.
  • the detachable arrangement therefore allows a user to be able to detach the spray arm from the machine-side abutment if necessary and to remove it from the dishwasher.
  • the spray arm can then be cleaned outside the dishwasher, for example in a sink under running water. After cleaning, the spray arm can be reinstalled in the dishwasher by being arranged as intended on the machine-side abutment.
  • a union nut is preferably used as the means for releasably arranging the spray arm on a machine-side abutment. This is preferably arranged so that it cannot be lost on the spray arm and has a connecting contour which corresponds to a counter-contour of the abutment.
  • a bayonet catch is preferably used as the connecting contour, since this allows particularly simple handling for the assembly or disassembly of the spray arm by the user.
  • the invention also proposes a screening system for a Dishwasher, in particular for a dishwasher of the type described above, with a screening device which is at least partially accommodated in the final assembled state by a collecting pan of the dishwasher and a spray arm of a spray device which is detachably rotatably arranged on an abutment on the machine side in the final assembled state, the screening device being designed around a central axis, wherein the center axis of the screening device and the axis of rotation of the spray arm coincide.
  • the screening system proposed by the invention has a screening device on the one hand and a spray arm on the other.
  • the spray arm is rotatably arranged, namely about an axis of rotation.
  • the screening device in turn has a central axis, it being provided according to the invention that the central axis and the rotational axis coincide. When used as intended, the spray arm therefore rotates around the central axis of the screening device.
  • the configuration according to the invention produces a symmetrical arrangement, namely a rotationally symmetrical arrangement of the sieve device and spray arm.
  • the spray arm is detachably arranged on an abutment of the dishwasher in the manner described above, so that after loosening the spray arm it is particularly easy on the user side due to the rotationally symmetrical design to be able to remove the spray arm together with the sieving device from the washing area of the dishwasher.
  • the sieve device has concentrically arranged sieves, which also simplifies the operation of the sieve device, particularly in the case of removal.
  • the screens of the screening device are each circular in cross section. This also serves to simplify handling.
  • FIG. 1 can be seen in a purely schematic representation of a dishwasher 1 in the form of a program-controlled household dishwasher.
  • the dishwasher 1 has, in a manner known per se, a housing 2 which receives a washing container 3.
  • the washing compartment 3 in turn provides a washing compartment 4 for receiving items to be cleaned.
  • the wash container 3 has a loading opening 9. This loading opening 9 can be closed in a fluid-tight manner by means of a wash cabinet door 10, the wash cabinet door 10 being mounted so as to be pivotable about a horizontally extending pivot axis.
  • the washware to be cleaned is loaded with washing liquor, for which purpose the dishwasher 1 has a spray device 6.
  • the spray device 6 includes an upper spray arm 7 and a lower spray arm 8.
  • the spray device 6 is connected to a circulation pump (not shown in the figures) of the dishwasher 1, by means of which the spray arms 7 and 8 of the spray device 6 are supplied with washing liquor.
  • the washing compartment 3 providing the washing compartment 4 opens out with reference to the drawing level Figure 1 on the underside in a collecting pot 5.
  • the circulation pump not shown in the figures, is connected to this collecting pot 5.
  • the collection pot 5 is removed from the washing compartment 4 of the washing container 3 by an in Figure 1 Separating device 12, not shown in detail.
  • the rinsing liquor circulated in the intended use by the circulating pump collects in the pot 5 after it has dripped from the items to be washed and after it has passed through the screening device 12. From there it reaches the spray arms 7 and 8 of the spray device 6 in the circulating mode in the manner already described.
  • the screening device 12 is, in particular, a synopsis of the Figures 2 and 8th reveals, rotationally symmetrical.
  • the sieve device 12 has Via a flat screen 14, a coarse screen 15 and a fine screen 16, each of which are aligned coaxially with a common central axis 24.
  • a stationary standpipe 17 is used, to which the spray arm 8 is connected at the end in the final assembled state, as can be seen particularly from the illustration Figure 4 results.
  • the center axis of the standpipe 17 and the center axis 24 of the screening device 12 therefore coincide.
  • the axis of rotation about which the lower spray arm 8 rotates in the intended use and the central axis 24 of the screening device 12 also coincide.
  • the lower spray arm 8 thus rotates about the central axis 24 of the screening device 12.
  • the spray arm is detachably arranged on the end of the standpipe 17. This allows the spray arm 8 to be separated from the standpipe 17 when necessary and to be removed from the dishwasher 1.
  • the sieving device 12 can be removed from the collecting pot 5 in a simple manner by lifting the sieving device 12 upwards out of the collecting pot 5 in the height direction of its central axis 24, as shown in the illustration Figure 8 reveals.
  • a union nut 13 is used for the releasable arrangement of the spray arm 8 on the standpipe 17. In the final assembled state, the union nut 13 is fixed in position relative to the standpipe 17. A bayonet lock is provided for this purpose, with corresponding cams 18 being provided by an upper section 22 of the standpipe 17. A shoulder 19 of the union nut 13 provides a corresponding counter contour on the inside, ie facing the standpipe 17, which engage in one another in the final assembled state, as shown in the illustration Figure 4 reveals.
  • the union nut 13 also has a cylindrical section in the form of a tubular extension 23 which, in the final assembled state, bears against the outer tube 17 on the outer circumferential surface. In this way, a tilt-proof arrangement of the union nut 13 on the standpipe 17 is achieved.
  • the union nut has a peripheral edge channel 21 on the sieve device side.
  • an edge edge 20 of the coarse sieve 15 of the sieve device 12 provided in a form-fitting manner on the union nut side engages.
  • This form-fitting engagement ensures that the screen device 12 is fixed securely in position in the final assembled state by means of the union nut 13, so that a relative movement of the screen device 12 to the standpipe 17 is also prevented in a direction running transverse to the central axis 24.
  • the screen device 12 is clamped in the final assembled state between the bottom of the collecting pot 15 and the union nut 13 fixed relative to the standpipe 17.
  • the connection between union nut and standpipe 17 is released, which on the one hand makes it possible to remove the spray arm 8 and the sieve device 12 from the wash cabinet 4.
  • This makes it possible to unlock and lock the screen device 12 and spray arm 8 with only a single control element. This simplifies the unlocking and locking process on the user side and also makes it easier to be able to remove the sieving device 12 and the spray arm 8 of the dishwasher for the purpose of, for example, manual cleaning.
  • FIGS. 10 and 11 show a schematic detailed view of the lower spray arm 8 of a spray device of a further embodiment of the dishwasher according to the invention.
  • the design and arrangement of the standpipe 17, the coarse screen 15 and the union nut 13 largely corresponds to the above-described designs, in particular the description of the Figures 4 , 7 , 8th and 9 . Therefore, only the existing differences of the further exemplary embodiment are shown below.
  • the union nut 13 and the coarse screen 15 have position markings 34, 35 which correspond to one another. These serve to make it easy for the user to visually check whether the Union nut 13 is properly aligned relative to the coarse sieve 15 with respect to its angle of rotation, it is thus properly arranged on the standpipe 17, that is to say there is a properly secured arrangement of the spray arm 8.
  • the union nut 13 has a through opening 36 through which a position marker 35 carried by the coarse sieve 15 is visible, at least when the union nut is rotated relative to the coarse sieve 15 to such an extent that its closed position, ie its correct orientation and thus that for the operation of the Dishwasher proper alignment of the spray arm 8 is reached.
  • Fig. 10 shows the still unlocked position while Fig. 11 shows the closed position.
  • the latter shows the position marker 35 provided by the coarse screen 15, which is not covered due to the passage opening 36.
  • the position marker 35 is designed as an inwardly directed web, starting from the edge 20 of the coarse screen 15, which can be approximately triangular or tapered inwards.
  • the union nut 13 provides a position marker 34, here in the form of a symbol, for example a stylized door lock, which is intended to signal the closed position to the user. If the position marker 35, in particular the tip of the web, points exactly to the symbol of the position marker 34, the user recognizes the presence of the closed position in a simple and intuitive manner.
  • the through opening 36 itself to be used as a position marking provided by the union nut, that is to say the symbol shown here is also dispensed with. In this case, a closed position would be achieved if the position marker 35, ie the tip of the web, is positioned centrally within the passage opening 36.
  • Fig. 12 shows a schematic detailed view of the screening device 12 of FIG 10 and 11 , with the spray arm and union nut removed.
  • Position marks 35 are formed on the edge at three locations, each in the form of an inwardly directed web starting from the edge 20 of the coarse screen 15.

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  • Washing And Drying Of Tableware (AREA)

Claims (4)

  1. Lave-vaisselle, en particulier lave-vaisselle domestique, comportant un récipient de lavage (3) qui comporte une chambre de lavage (4) et est prévu pour recevoir la vaisselle à nettoyer, un bras de pulvérisation (8) disposé de manière rotative à l'intérieur du récipient de lavage (3) pour l'application de liquide de lavage sur la vaisselle, un bac collecteur (5) dans lequel le récipient de lavage (3) débouche fluidiquement, et un dispositif de tamisage (12) qui peut être inséré dans le bac collecteur (5), lequel dispositif de tamisage est traversé, à l'état monté final, par un tuyau vertical (17) qui permet l'acheminement du liquide de lavage au bras de pulvérisation (8), le bras de pulvérisation (8) étant disposé de manière amovible sur le tuyau vertical (17), du côté extrémité de celui-ci, et comportant un élément de verrouillage (13) permettant de disposer de manière amovible le bras de pulvérisation (8) sur le tube vertical (17), un verrouillage et/ou déverrouillage commun du bras de pulvérisation (8) et du dispositif de tamisage (12) pouvant être réalisé par actionnement de l'élément de verrouillage (13), et le dispositif de tamisage (12) comporte un tamis grossier (15) qui interagit avec l'élément de verrouillage, caractérisé en ce que l'élément de verrouillage et le tamis grossier (15) portent des repères de positionnement correspondants (34, 35).
  2. Lave-vaisselle selon la revendication 1, caractérisé en ce que l'élément de verrouillage est réalisé sous la forme d'un écrou-raccord (13), l'écrou-raccord (13) comportant une partie formée d'une fermeture à baïonnette, laquelle partie correspond à la configuration du tuyau vertical (17) servant de butée pour le bras de pulvérisation (8).
  3. Lave-vaisselle selon la revendication 2, caractérisé en ce que l'écrou-raccord (13) présente un canal de bord ouvert côté dispositif de tamisage (21), canal dans lequel l'ensemble tamis (12) vient en prise à l'état monté final.
  4. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le dispositif de tamisage (12) comporte un tamis grossier (15), un tamis fin (16) et un tamis de surface (14) pouvant être démontés l'un de l'autre, lesquels tamis sont de préférence disposés concentriquement à l'état monté final.
EP18183204.9A 2017-07-13 2018-07-12 Lave-vaisselle, en particulier lave-vaisselle électroménager Active EP3427629B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017115721 2017-07-13
DE102017124259 2017-10-18

Publications (2)

Publication Number Publication Date
EP3427629A1 EP3427629A1 (fr) 2019-01-16
EP3427629B1 true EP3427629B1 (fr) 2020-06-24

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EP18183204.9A Active EP3427629B1 (fr) 2017-07-13 2018-07-12 Lave-vaisselle, en particulier lave-vaisselle électroménager

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323529A (en) * 1965-07-26 1967-06-06 Hobart Mfg Co Liquid distributing system for dishwashing machine
US5700329A (en) * 1996-05-22 1997-12-23 White Consolidated Industries, Inc. Filter standpipe for dishwasher
US9655494B2 (en) * 2014-06-05 2017-05-23 Wolf Appliance, Inc. Dishwasher filtration system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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