Domestic dishwasher

Abstract

The invention relates to a domestic dishwasher (1) that has a washing container (2) and a washing item receptacle (12-14) for receiving items to be washed, wherein the washing item receptacle (12-14) can be moved out of the washing container (2) in a pull-out direction (A) and can be moved into the washing container (2) in an insertion direction (E) oriented counter to the pull-out direction (A); a spray arm (16), which is rotatably mounted on the washing item receptacle (12-14), for supplying the items to be washed with washing liquor and / or fresh water (F), and a spray arm rotating device (31) which is attached to the washing item receptacle (12-14), wherein the spray arm rotating device (31) has a movement element (32) which is movably mounted on the washing item receptacle (12-14), which movement element, when the washing item receptacle (12-14) is moved into the washing container (2) in the insertion direction (E), is supported in or on the washing container (2) in order to set the spray arm (16) to rotate.

Description

[0001] household dishwasher

[0002] The present invention relates to a household dishwasher.

[0003] A dishwasher comprises a wash tub in which items to be cleaned can be accommodated. Furthermore, such a dishwasher has at least one items holder that can be moved out of the wash tub and back into it. The items holder is suitable for receiving items to be washed, which are then sprayed with wash solution and / or fresh water by means of a rotatably mounted spray arm in order to clean the items. If the items holder is carelessly loaded by a user, this can result in the items blocking the spray arm. To detect such a blockage, it is possible, for example, for the user to turn the spray arm manually. However, this is time-consuming. There is also a risk that the user could contaminate clothing or their hands. It is therefore desirable to be able to easily detect such a potential blockage in order to take appropriate countermeasures.

[0004] WO 2013 / 064394 A1 describes a dishwasher with a wash tub and a dish receptacle accommodated in the wash tub. A rotatable spray arm is provided below the dish receptacle. The dish receptacle is grid-shaped and constructed from a plurality of interconnected wires. The dish receptacle has at least one wire oriented vertically from a base of the dish receptacle toward the spray arm. When the dish receptacle is moved into the wash tub, this wire strikes the spray arm, causing the spray arm to rotate. It is therefore easy for the user to determine whether or not the rotating spray arm is colliding with dishes held in the dish receptacle. If a collision has occurred or is expected, the dishes can be re-sorted accordingly to avoid a collision of the dishes with the spray arm.

[0005] WO 2021 / 078718 A1 discloses a dishwasher comprising a housing, a washing chamber provided in the housing, in which a washing process is performed, at least one washing basket arranged in the washing chamber for loading dishes to be washed, and at least one spray arm that rotates around itself and introduces water into the washing chamber to wash the dishes. The dishwasher further comprises a control mechanism configured to convert a sliding movement of the at least one washing basket into a rotation of the at least one spray arm.

[0006] Against this background, it is an object of the present invention to provide an improved household dishwasher.

[0007] Accordingly, a household dishwasher is proposed with a washing container, a washware holder for holding washware, wherein the washware holder can be moved out of the washing container in a pull-out direction and can be moved into the washing container in an insertion direction oriented opposite to the pull-out direction, a spray arm rotatably mounted on the washware holder for applying wash liquor and / or fresh water to the washware, and a spray arm rotating device attached to the washware holder, wherein the spray arm rotating device has a movement element displaceably mounted on the washware holder, which movement element is supported in or on the washing container when the washware holder is moved in the insertion direction into the washing container in order to set the spray arm in a rotational movement.

[0008] The spray arm rotation mechanism, which causes the spray arm to rotate, makes it easy to determine whether the washware holder is at risk of blocking the spray arm when moving it into the wash tub. It eliminates the need for the user to reach directly into the wash tub to manually move it. This simplifies operation and increases the convenience of using the household dishwasher.

[0009] The washing container is preferably cuboid or box-shaped. A door is preferably pivotably attached to the washing container. The washing container and the door together enclose a washing chamber of the household dishwasher. This washing chamber is bordered or enclosed by the washing container and the door hinged to the washing container. The washing container and the door thus determine the boundaries or spatial extent of the washing chamber. The washing container preferably comprises a floor, a ceiling arranged opposite the floor, a rear wall arranged opposite the closed door, and two side walls arranged opposite one another. The extension direction is oriented in particular from the rear wall towards the door, in particular when it is closed. Accordingly, the insertion direction is oriented from the door, in particular when it is closed, towards the rear wall.

[0010] The spray arm is preferably movable relative to the wash tub. The spray arm is attached or mounted to the dishware holder. The spray arm preferably comprises a plurality of nozzles or spray jets, with the aid of which the dishes held in the dishware holder are wetted with dishwashing liquid and / or fresh water in order to clean them. The spray arm can also have drive nozzles from which dishwashing liquid and / or fresh water emerge from the side to set the spray arm in rotation. If the spray arm is driven by escaping dishwashing liquid and / or fresh water, the spray arm is passively driven. The spray arm can therefore be referred to as a passive spray arm. Alternatively, the spray arm can also be actively driven. "Active" in this context means that the spray arm has a separate drive element, for example in the form of an electric motor and / or a gear. Multiple spray arms can be provided.

[0011] The household dishwasher may have multiple dishware receptacles. In particular, the household dishwasher has a lower dishware receptacle or a lower basket, an upper dishware receptacle or an upper basket, and a cutlery drawer. Preferably, the spray arm and the spray arm rotating device are attached to the upper dishware receptacle or the upper basket. However, the spray arm and the spray arm rotating device may also be attached to any other dishware receptacle. However, it is assumed below that the dishware receptacle to which the spray arm and the spray arm rotating device are attached is an upper dishware receptacle or an upper basket. Therefore, the term "dishware receptacle" may also be replaced by the term "upper basket" below.

[0012] The movement element is in particular rod-shaped. The movement element can be a pushing element or be designated as such. In this case, the movement element is preferably suitable for performing a pushing movement. The movement element can also be a pulling element or be designated as such. In this case, the movement element is preferably suitable for performing a pulling movement. The movement element can also be a combined pushing and pulling element or be designated as such. In this case, the movement element is preferably suitable for performing both a pulling movement and a pushing movement.

[0013] The movement element is mounted on the dishware holder in such a way that it can move linearly along the extension direction and along the insertion direction. The fact that the movement element is "supported" in or on the washing container means that the movement element contacts the washing container, in particular its rear wall, when the dishware holder is moved into the washing container. This causes the movement element to move linearly relative to the dishware holder and interact with the spray arm, causing the spray arm to rotate. The movement element moves along the extension direction as soon as the movement element comes into contact with the rear wall.

[0014] In this case, "in or on" the washing container means, in particular, that the movement element can be supported on any component accommodated within the washing container and, on the other hand, that the movement element can also be supported directly or immediately on the washing container, for example, on the rear wall. Particularly preferably, the movement element is supported on the rear wall of the washing container when the dishware holder is moved into the insertion direction into the washing container in order to set the spray arm in rotation.

[0015] The moving element and the spray arm form a retrofit component. The household dishwasher can therefore be retrofitted with the moving element and the spray arm. The moving element and the spray arm can be part of a spray arm assembly of the household dishwasher. This spray arm assembly can be retrofitted.

[0016] In this case, the fact that the spray arm is "rotatably mounted" on the dishware holder means that the spray arm is operatively connected or coupled to the dishware holder in such a way that the spray arm can rotate relative to the dishware holder. For this purpose, the spray arm can, for example, be mounted directly on the dishware holder so that it can rotate. Alternatively, a supply pipe for supplying wash liquor and / or fresh water to the spray arm can be mounted on the dishware holder. In this case, the spray arm is rotatably mounted on the supply pipe. The spray arm is thus indirectly coupled or operatively connected to the dishware holder via the supply pipe.

[0017] According to one embodiment, the spray arm rotating device has an engagement element attached to the spray arm, which extends from the top side of the spray arm in the direction of the dishware holder, and a counter-engagement element attached to the movement element, which extends from the bottom side of the dishware holder in the direction of the spray arm, wherein the counter-engagement element engages positively in the engagement element when the dishware holder is displaced in the insertion direction into the washing container in order to set the spray arm in the rotational movement.

[0018] A positive connection or positive engagement is created by the interlocking or engaging of two connecting elements, in this case the counter-engagement element and the engagement element. The counter-engagement element is preferably attached to an end of the moving element facing away from the rear wall. The counter-engagement element is preferably positioned obliquely with respect to the moving element.

[0019] According to a further embodiment, the counter-engagement element is an elastically deformable component, in particular a leaf spring, a plastic component or the like.

[0020] The elastically deformable component can be any spring. Preferably, the component is elastically deformable. The counter-engagement element can be made of spring steel, for example. Alternatively, the counter-engagement element can also be made of a plastic material.

[0021] According to a further embodiment, the counter-engagement element slides over the engagement element when the dishware holder is moved out of the washing container in the pull-out direction, elastically deforming the counter-engagement element. This prevents the spray arm from rotating even when the dishware holder is moved out of the washing container.

[0022] According to a further embodiment, the engagement element has a plurality of plate-shaped engagement wings, between which the counter-engagement element engages in a form-fitting manner in order to set the spray arm into the rotational movement when the dishware holder is moved into the washing container in the insertion direction.

[0023] The number of engagement wings is optional. For example, twelve such engagement wings are provided. However, fewer or more than twelve engagement wings can also be provided. "Plate-shaped" in this context can mean that the engagement wings have a constant or consistent thickness or wall thickness.

[0024] According to a further embodiment, the engagement wings are arranged evenly distributed around a rotation axis of the spray arm.

[0025] The spray arm is mounted on the dishware holder, in particular, so that it can rotate about its axis of rotation. The supply pipe, through which dishwashing liquid and / or fresh water is supplied to the spray arm, is preferably attached to the dishware holder. The spray arm is mounted on this supply pipe so that it can rotate about its axis of rotation.

[0026] According to a further embodiment, the engagement wings extend radially outwards from the axis of rotation.

[0027] In this case, "radially outward" means in particular along a radial direction which is oriented perpendicular to and away from the axis of rotation of the spray arm.

[0028] According to a further embodiment, the spray arm has a wing plate to which the engagement wings are attached, wherein the engagement wings extend radially beyond the wing plate and wherein the engagement wings are connected to one another only by means of the wing plate.

[0029] The wing plate and the engagement wings together form the engagement element. The wing plate is formed integrally with the spray arm, in particular made of a single material. "Integral" or "single-piece" in this case means that the spray arm and the wing plate are not composed of different subcomponents, but rather form a single component. "Integral" in this case means that the wing plate and the spray arm are made entirely of the same material. For example, the engagement element and the spray arm can be formed as plastic injection-molded components. The spray arm preferably has two half-shells welded together. The wing plate and the engagement wings are connected to one another in one piece, in particular made of a single material. The wing plate is particularly disc-shaped and rotationally symmetrical to the central axis.The engagement wings extend from the top of the wing plate toward the dishware holder. The engagement wings are separate sections of the engagement element. The engagement wings preferably do not contact each other and are not directly connected. In particular, the engagement wings are only indirectly connected to each other via the wing plate.

[0030] According to a further embodiment, the spray arm rotating device has a support element which is positively connected to the dishware holder and on which the movement element is displaceably mounted.

[0031] For example, the support element is latched, snapped, or clipped to the dishware holder. Multiple support elements can be provided. For example, three such support elements are provided. In particular, a first support element, a second support element, and a third support element are provided. The movement element is displaceably mounted on each of these support elements.

[0032] According to a further embodiment, the spray arm rotating device has a spring element which pretensions the movement element in the direction of the rinsing container.

[0033] In particular, the spring element preloads the thrust element toward the rear wall. The spring element is, in particular, a cylindrical spring. The spring element can be a compression spring. In this case, the spring element "preloads" the movement element toward the rear wall means that as soon as the movement element no longer makes contact with the washing container, in particular with the rear wall, the spring element moves the movement element toward the rear wall.

[0034] According to a further embodiment, the spring element is pre-tensioned when the movement element is supported in or on the rinsing container.

[0035] In particular, the spring element is pre-tensioned when the push element is supported against the rear wall. In particular, the spring element is compressed when the movement element is supported against the washing container, in particular against the rear wall. As soon as the movement element is no longer in contact with the washing container, in particular with the rear wall, the spring element moves the movement element back toward the rear wall and thus along the insertion direction.

[0036] According to a further embodiment, the spray arm rotating device has a transmission element attached to the movement element, wherein the spring element is arranged between the carrier element and the transmission element.

[0037] In particular, the spring element is arranged between the first support element and the transmission element. The transmission element is fixedly connected to the movement element. For example, the transmission element is screwed to the movement element. The transmission element is preferably annular. The spring element is placed between the transmission element, which is fixedly mounted on the movement element, and one of the support elements, in particular the first support element. The movement element can move linearly with respect to the support element, in particular the second support element, or the support elements.

[0038] According to a further embodiment, the transmission element is displaceably mounted on the carrier element.

[0039] Preferably, the transmission element acts as an anti-twist device for the movement element. Accordingly, the transmission element is slidably mounted on the support element in such a way that the transmission element cannot rotate relative to the support element. According to a further embodiment, the movement element is guided through the spring element.

[0040] This means, in particular, that the movement element is arranged within the spring element. The spring element thus completely encloses the movement element.

[0041] According to a further embodiment, the spray arm rotating device has a buffer element attached to the moving element, wherein the buffer element is arranged between the moving element and the rinsing container.

[0042] In particular, the buffer element is arranged between the moving element and the rear wall. Preferably, the moving element is attached to an end of the moving element facing away from the counter-engagement element. The buffer element can, for example, be a cap or the like attached to the moving element. For example, the buffer element is made of rubber or an elastomer, such as a thermoplastic elastomer (TPE).

[0043] Further possible implementations of the household dishwasher also include combinations of features or embodiments described above or below with regard to the exemplary embodiments that are not explicitly mentioned. In this case, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the household dishwasher.

[0044] Further advantageous configurations and aspects of the household dishwasher are the subject of the dependent claims and the exemplary embodiments of the household dishwasher described below. The household dishwasher is explained in more detail below using preferred embodiments with reference to the accompanying figures.

[0045] Fig. 1 shows a schematic perspective view of an embodiment of a household dishwasher;

[0046] Fig. 2 shows a schematic perspective view of an embodiment of a spray arm assembly for the household dishwasher according to Fig. 1; Fig. 3 shows a schematic side view of the spray arm assembly according to Fig. 2;

[0047] Fig. 4 shows a schematic plan view of the spray arm arrangement according to Fig. 2;

[0048] Fig. 5 shows a schematic perspective view of an embodiment of a dishware holder for the household dishwasher according to Fig. 1;

[0049] Fig. 6 shows a further schematic perspective view of the dishware holder according to Fig. 5; and

[0050] Fig. 7 shows a further schematic perspective view of the dishware holder according to Fig. 5.

[0051] In the figures, identical or functionally equivalent elements have been given the same reference numerals unless otherwise stated.

[0052] Fig. 1 shows a schematic perspective view of an embodiment of a household dishwasher 1. The household dishwasher 1 comprises a washing container 2, which can be closed, in particular watertight, by a door 3. For this purpose, a sealing device can be provided between the door 3 and the washing container 2. The washing container 2 is preferably cuboid-shaped. The washing container 2 can be arranged in a housing of the household dishwasher 1. The washing container 2 and the door 3 can form a washing chamber 4 for washing dishes.

[0053] The door 3 is shown in its open position in Fig. 1. The door 3 can be closed or opened by pivoting about a pivot axis 5 provided at a lower end of the door 3. With the help of the door 3, a loading opening 6 of the washing container 2 can be closed or opened. The washing container 2 has a base 7, a ceiling 8 arranged opposite the base 7, a rear wall 9 arranged opposite the closed door 3 and two side walls 10, 11 arranged opposite one another. The base 7, the ceiling 8, the rear wall 9 and the side walls 10, 11 can be made, for example, from a stainless steel sheet. Alternatively, the base 7 can be made, for example, from a plastic material.

[0054] The household dishwasher 1 further comprises at least one dishware receptacle 12 to 14. Preferably, several, for example three, dishware receptacles 12 to 14 can be provided, wherein the dishware receptacle 12 can be a lower dishware receptacle or a lower basket, the dishware receptacle 13 can be an upper dishware receptacle or an upper basket, and the dishware receptacle 14 can be a cutlery drawer.

[0055] As Fig. 1 further shows, the dishware receptacles 12 to 14 are arranged one above the other in the washing container 2. Each dishware receptacle 12 to 14 can be selectively moved into or out of the washing container 2. In particular, each dishware receptacle 12 to 14 can be pushed or moved into the washing container 2 in an insertion direction E and pulled or moved out of the washing container 2 in an extension direction A, opposite to the insertion direction E.

[0056] Fig. 2 shows a schematic perspective view of an embodiment of a spray arm arrangement 15 for the household dishwasher 1. Fig. 3 shows a schematic side view of the spray arm arrangement 15. Fig. 4 shows a schematic plan view of the spray arm arrangement 15. In the following, reference is made simultaneously to Figs. 2 to 4.

[0057] The spray arm assembly 15 is arranged within the washing tub 2. In particular, the spray arm assembly 15 is connected to one of the dishware receptacles 12 to 14, in particular to the dishware receptacle 13. As previously mentioned, the dishware receptacle 13 is an upper basket of the household dishwasher 1 and can therefore also be referred to as such. With the aid of the spray arm assembly 15, it is possible to apply wash liquor and / or fresh water F (Fig. 3) to the dishware accommodated in the washing chamber 4. The spray arm assembly 15 is a retrofit component.

[0058] The spray arm assembly 15 comprises a spray arm 16, which is mounted on the dishware holder 13 for rotation about a rotation axis 17 (Fig. 3). The spray arm 16 comprises a first arm section 18 and a second arm section 19. The arm sections 18, 19 are connected to one another. A plurality of spray nozzles 20 to 25 are provided on the arm sections 18, 19. The spray nozzles 20 to 25 are oriented toward the dishware holder 13. However, spray nozzles oriented downwards away from the dishware holder 13 (not shown) can also be provided.

[0059] During operation of the spray arm arrangement 15, rinse water and / or fresh water F exits the spray nozzles 20 to 25 to wet the washware with the rinse water and / or fresh water F. Furthermore, outermost spray nozzles 20, 25 can function as drive nozzles. For this purpose, the spray nozzles 20, 25 are preferably arranged obliquely with respect to the rotation axis 17, so that the emerging rinse water and / or fresh water F causes the spray arm 16 to rotate about the rotation axis 17.

[0060] The spray arm 16 comprises an inlet opening 26 through which the rinsing solution and / or fresh water F flows into the spray arm 16. The spray arm 16 further comprises an engagement element 27 attached thereto. The engagement element 27 has a vane plate 28 formed integrally, in particular of a single material, with the spray arm 16. "Integral" or "one-piece" in this context means that the vane plate 28 and the spray arm 16 are not constructed from different subcomponents, but rather that the vane plate 28 and the spray arm 16 form a common component. "Integral" in this context means that the vane plate 28 and the spray arm 16 are made entirely of the same material. Alternatively, the engagement element 27 with the vane plate 28 can also be a separate component from the spray arm 16, which, for example, is latched or snapped onto the spray arm 16.

[0061] The wing plate 28 is disc-shaped. In particular, the wing plate 28 is rotationally symmetrical to the rotation axis 17. In the orientation of Figs. 2 to 4, a plurality of plate-shaped engagement wings 29 extend from the top of the wing plate 28, only one of which is provided with a reference symbol. The engagement wings 29, like the wing plate 28, are part of the engagement element 27. This means, in particular, that the wing plate 28 and the engagement wings 29 together form the engagement element 27. The number of engagement wings 29 is arbitrary. For example, twelve such engagement wings 29 are provided.

[0062] The engagement wings 29 are evenly distributed around the rotation axis 17.

[0063] The engagement wings 29 extend radially outward from the rotational axis 17. "Radially outward" in this case means along a radial direction R that is perpendicular to the rotational axis 17 and oriented away from it. The engagement wings 29 themselves preferably do not contact one another. This means, in particular, that the engagement wings 29 are not directly connected to one another. However, the engagement wings 29 are indirectly connected to one another via the wing plate 28. This means, in particular, that all engagement wings 29 are connected to the wing plate 28 in one piece, in particular by means of a single material.

[0064] In the direction of the inlet opening 26, the engagement vanes 29 terminate in front of a wall 30 that extends rotationally symmetrically around the rotation axis 17. This means, in particular, that the engagement vanes 29 do not contact the wall 30. Adjacent engagement vanes 29 thus form open passages, viewed along and counter to the radial direction R. The wall 30 has a larger diameter than the inlet opening 26. Viewed along the radial direction R, the engagement vanes 29 extend radially or laterally beyond the vane plate 28.

[0065] In addition to the spray arm 16, the spray arm arrangement 15 comprises a spray arm rotating device 31, which is configured to set the spray arm 16 in a rotary movement about the rotation axis 17 without an inflow of wash liquor and / or fresh water F. In particular, the spray arm rotating device 31 is configured to set the spray arm 16 in the rotary movement while it is not being supplied with wash liquor and / or fresh water F. The spray arm rotating device 31 serves to set the spray arm 16 in the rotary movement when the washware holder 13 is moved in the insertion direction E into the washing container 2.

[0066] The spray arm rotating device 31 comprises a moving element 32. The moving element 32 is mounted on the washware holder 13 so as to be linearly displaceable. The moving element 32 is rod-shaped. For example, the moving element 32 is a steel wire. However, the moving element 32 can also be a plastic component. The moving element 32 can have a circular cross-section. However, the moving element 32 can also have any other cross-section, for example a cross-shaped cross-section. When the washware holder 13 is moved in the insertion direction E into the washing container 2, the moving element 32 is supported on the washing container 2, in particular on the rear wall 9 of the washing container 2. This means that the moving element 32 comes into contact with the rear wall 9 when the washware holder 13 is moved into the washing container 2.For this purpose, a buffer element 33 is attached to one end of the moving element 32 facing the rear wall 9. The buffer element 33 can, for example, be a cap made of an elastic material that is placed over the moving element 32. The buffer element 33 is elastically deformable.

[0067] On the movement element 32, at an end facing away from the buffer element 33, a counter-engagement element 34 corresponding to the engagement element 27 is provided. The counter-engagement element 34 is preferably a leaf spring. The counter-engagement element 34 is designed to engage positively with the engagement element 27 in order to rotate or turn the spray arm 16 about the axis of rotation 17 upon contact of the buffer element 33 with the rear wall 9. A positive connection is created by the interlocking or engaging of two connection partners, in this case the counter-engagement element 34 and the engagement element 27. The movement element 32 is positioned laterally offset with respect to the axis of rotation 17. The counter-engagement element 34 is designed to contact at least one of the engagement wings 29.

[0068] The spray arm rotating device 31 comprises a plurality of support elements 35 to 37 on which the movement element 32 is mounted for linear displacement. The number of support elements 35 to 37 is arbitrary. For example, three support elements 35 to 37 are provided. In particular, a first support element 35, a second support element 36, and a third support element 37 are provided. However, at least one such support element 35 to 37 is provided. The support elements 35 to 37 are positively connected to the washware holder 13. For example, the support elements 35 to 37 can be latched or snapped into the washware holder 13. With the aid of the support elements 35 to 37, the movement element 32 is mounted on the washware holder 13 for linear displacement.

[0069] The spray arm rotating device 31 further comprises a spring element 38. The spring element 38 is a cylindrical spring. In particular, the spring element 38 is a compression spring. The movement element 32 is guided through the spring element 38. This means, in particular, that the movement element 32 is arranged within the spring element 38. The spring element 38 is positioned such that it preloads the movement element 32 in the direction of the rear wall 9. This means, in particular, that the spring element 38 moves the movement element 32 in the direction of the rear wall 9 as soon as the movement element 32 loses contact with the rear wall 9.

[0070] As soon as the movement element 32 or the buffer element 33 contacts the rear wall 9 during the displacement of the dishware holder 13 into the washing tub 2, the spring element 38 is compressed or further tensioned. Thus, the spring element 38 is further pretensioned when the movement element 32 is supported by the buffer element 33 on the rear wall 9.

[0071] A transmission element 39 is attached to the movement element 32 and is firmly connected to the movement element 32. The spring element 38 is positioned between the first support element 35 and the transmission element 39. The transmission element 39 is slidably mounted on the second support element 36. The transmission element 39 is mounted on the second support element 36 in such a way that the transmission element 39, together with the movement element 32, cannot rotate relative to the second support element 36. The transmission element 39 thus functions as an anti-twist device. The transmission element 39 can also have a roof that covers the spring element 38 in the direction of the dishware holder 13.

[0072] Fig. 5 shows a schematic perspective view of the dishware holder 13. Fig. 5 shows a further schematic perspective view of the dishware holder 13. Fig. 7 shows a further schematic perspective view of the dishware holder 13. In the following, reference is made simultaneously to Figs. 5 to 7.

[0073] As Fig. 5 shows, the dishware holder 13 is basket-shaped and comprises a base 40, a rear wall 41, a front wall 42 and two oppositely arranged side walls 43, 44. The base 40, the rear wall 41, the front wall 42 and the side walls 43, 44 are grid-shaped. The spray arm rotating device 31 is attached to the base 40. For this purpose, the support elements 35 to 37 are connected to the base 40. For this purpose, the support elements 35 to 37 can engage around wires of the base 40 in a form-fitting manner. The support elements 35 to 37 can be detachably connected to the base 40. For example, the support elements 35 to 37 are locked to the base 40 or clipped or snapped into it. Furthermore, a supply pipe 45 is attached to the base 40, via which rinsing solution and / or fresh water F is supplied to the spray arm 16. The spray arm 16 is mounted on the supply pipe 45 so as to be rotatable about the rotation axis 17.

[0074] If the dishware holder 13 is pulled out in the pull-out direction A, as shown in Fig. 6, the spring element 38 moves the movement element 32 in the direction of the rear wall 9. In this case, the elastically deformable counter-engagement element 34 jumps over the engagement wings 29 without setting the spray arm 16 into rotation.

[0075] If the dishware holder 13 is moved into the washing container 2 in the insertion direction E, as shown in Fig. 7, the moving element 32 or the buffer element 33 contacts the rear wall 9. The moving element 32 is thereby moved forward in the extension direction A, wherein the counter-engagement element 34 contacts at least one of the engagement wings 29 and causes the spray arm 16 to rotate about the rotation axis 17. As soon as the spray arm 16 rotates, a user can see whether or not the spray arm 16 is blocked by dishes located in the washing container 2. In the event of a blockage, the user can re-sort the dishes accordingly.

[0076] This makes it easier for the user to check for a blockage of the spray arm 16. Increased user satisfaction can be ensured by consistently clean and accessible washware as a result of a flawless wash cycle. Resources are conserved by reducing the number of repeat wash cycles due to dirty washware caused by a blockage of the spray arm 16. The spray arm rotating device 31 can be retrofitted to existing household dishwashers 1. For this purpose, the spray arm rotating device 31 is attached to the respective washware holder 13 using the support elements 35 to 37. The spray arm 16 is replaced accordingly so that it has an engagement element 27 as previously mentioned.

[0077] Although the present invention has been described using exemplary embodiments, it is susceptible to numerous modifications. Reference symbols used:

[0078] 1 household dishwasher

[0079] 2 rinsing containers

[0080] 3 Door

[0081] 4 Washing-up area

[0082] 5 swivel axis

[0083] 6 Loading opening

[0084] 7 Floor

[0085] 8 Ceiling

[0086] 9 Rear wall

[0087] 10 Side wall

[0088] 11 Side wall

[0089] 12 Dishwasher waste holder

[0090] 13 Dishwasher drawer

[0091] 14 Dishwasher waste holder

[0092] 15 Spray arm arrangement

[0093] 16 spray arm

[0094] 17 axis of rotation

[0095] 18 arm section

[0096] 19 arm section

[0097] 20 spray nozzle

[0098] 21 Spray nozzle

[0099] 22 Spray nozzle

[0100] 23 Spray nozzle

[0101] 24 spray nozzle

[0102] 25 spray nozzle

[0103] 26 Inlet opening

[0104] 27 engagement element

[0105] 28 wing plate

[0106] 29 intervention wings

[0107] 30 wall

[0108] 31 Spray arm rotating device

[0109] 32 Moving element 33 Buffer element

[0110] 34 Counter-engagement element

[0111] 35 support element

[0112] 36 support element

[0113] 37 support element

[0114] 38 spring element

[0115] 39 Transmission element

[0116] 40 floor

[0117] 41 Rear wall

[0118] 42 front wall

[0119] 43 Side wall

[0120] 44 side wall

[0121] 45 feed pipe

[0122] A Extension direction

[0123] E Insertion direction

[0124] F Rinse solution and / or fresh water

[0125] R Radial direction

Claims

PATENT CLAIMS 1. A household dishwasher (1) comprising a washing container (2), a washware holder (12-14) for receiving washware, wherein the washware holder (12-14) is displaceable out of the washing container (2) in a pull-out direction (A) and displaceable into the washing container (2) in an insertion direction (E) oriented opposite to the pull-out direction (A), a spray arm (16) rotatably mounted on the washware holder (12-14) for applying wash liquor and / or fresh water (F) to the washware, and a spray arm rotating device (31) mounted on the washware holder (12-14), wherein the spray arm rotating device (31) has a moving element (32) displaceably mounted on the washware holder (12-14), which moving element (32) moves when the washware holder (12-14) is moved in the insertion direction (E). into the rinsing container (2) in or on the rinsing container (2) in order to set the spray arm (16) in a rotary movement.

2. Household dishwasher according to claim 1, characterized in that the spray arm rotating device (31) has an engagement element (27) attached to the spray arm (16), which extends from the top of the spray arm (16) in the direction of the dishware holder (12 - 14), and a counter-engagement element (34) attached to the movement element (32), which extends from the bottom of the dishware holder (12 - 14) in the direction of the spray arm (16), wherein the counter-engagement element (34) engages positively in the engagement element (27) when the dishware holder (12 - 14) is moved in the insertion direction (E) into the washing container (2) in order to set the spray arm (16) in the rotational movement.

3. Household dishwasher according to claim 2, characterized in that the counter-engagement element (34) is an elastically deformable component, in particular a leaf spring, a plastic component or the like.

4. Household dishwasher according to claim 2 or 3, characterized in that the counter-engagement element (34) when the dishware holder (12 - 14) is displaced out of the washing container (2) in the pull-out direction (A) over the insertion grip element (27) slides, whereby the counter-engagement element (34) is deformed in a spring-elastic manner.

5. Household dishwasher according to one of claims 2 - 4, characterized in that the engagement element (27) has a plurality of plate-shaped engagement wings (29), between which the counter-engagement element (34) engages in a form-fitting manner in order to set the spray arm (16) into the rotary movement when the dishware holder (12 - 14) is moved in the insertion direction (E) into the washing container (2).

6. Household dishwasher according to claim 5, characterized in that the engagement wings (29) are arranged evenly distributed around a rotational axis (17) of the spray arm (16).

7. Household dishwasher according to claim 6, characterized in that the engagement wings (29) extend radially outwards from the axis of rotation (17).

8. Household dishwasher according to one of claims 5 - 7, characterized in that the spray arm (16) has a wing plate (28) to which the engagement wings (29) are attached, wherein the engagement wings (29) extend radially beyond the wing plate (28), and wherein the engagement wings (29) are connected to one another only by means of the wing plate (28).

9. Household dishwasher according to one of claims 1 - 8, characterized in that the spray arm rotating device (31) has a support element (35 - 37) which is positively connected to the dishware holder (12 - 14) and on which the movement element (32) is displaceably mounted.

10. Household dishwasher according to claim 9, characterized in that the spray arm rotating device (31) has a spring element (38) which pretensions the moving element (32) in the direction of the washing container (2).

11. Household dishwasher according to claim 10, characterized in that the spring element (38) is pre-tensioned when the movement element (32) is supported in or on the washing container (2).

12. Household dishwasher according to claim 10 or 11, characterized in that the spray arm rotating device (31) has a transmission element (39) attached to the movement element (32), wherein the spring element (38) is arranged between the carrier element (35 - 37) and the transmission element (39).

13. Household dishwasher according to claim 12, characterized in that the transmission element (39) is displaceably mounted on the carrier element (35 - 37).

14. Household dishwasher according to one of claims 10 - 13, characterized in that the movement element (32) is guided through the spring element (38).

15. Household dishwasher according to one of claims 1 - 14, characterized in that the spray arm rotating device (31) has a buffer element (33) attached to the moving element (32), wherein the buffer element (33) is arranged between the moving element (32) and the washing container (2).

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