Domestic dishwasher having pump device and pump device for water-conducting domestic appliance

Abstract

The invention relates to a domestic dishwasher (1) having a washing container (2) for receiving items (G) to be washed, a hydraulic circuit (33) for circulating washing liquid and / or fresh water (F) in the washing container (2), and a pump device (19) for applying washing liquid and / or fresh water (F) to the hydraulic circuit (33), the pump device (19) having a central axis (20) which is oriented in the direction of gravity (g), the pump device (19) has a water distributor (23) integrated in a housing (35) of the pump device (19) for selectively distributing washing liquid and / or fresh water (F) to a plurality of fluid outlets (51, 52, 53, 54) of the pump device (19), and wherein all of the fluid outlets (51, 52, 53, 54) are oriented along the central axis (20).

Description

TECHNICAL FIELD

[0001] The present application relates to a domestic dishwasher. BACKGROUND

[0002] A dishwasher has a washing container in which washing items can be received. In order to apply washing liquid and / or fresh water to the washing items, a spray zone can be provided in the washing container. The spray zone can be configured, for example, as a spray arm which is rotatably supported in or on the washing container. In order to apply washing liquid and / or fresh water to the spray zone, the dishwasher has a circulation pump. The distribution of the washing liquid and / or fresh water over the spray zone takes place by means of a so-called water distributor. The circulation pump described above sucks in the washing liquid and / or fresh water from a pump sump of the dishwasher, wherein the motor shaft having the operating wheel of the circulation pump is usually arranged horizontally and transports the washing liquid and / or fresh water through a pump housing to the water distributor or directly to the spray zone, in which a heater can also be integrated. SUMMARY

[0003] Against this background, it is an object of the present application to provide an improved domestic dishwasher.

[0004] It is therefore proposed that a domestic dishwasher has a washing container for accommodating washing items, a hydraulic circuit for circulating fresh water and / or rinse liquid in the washing container, and a pump device for applying washing liquid and / or fresh water to the hydraulic circuit. Here, the pump device has a central axis which is oriented in the direction of gravity, wherein the pump device has a water distributor integrated in a housing of the pump device for selectively distributing the washing liquid and / or fresh water onto a plurality of fluid outlets, and wherein all fluid outlets are oriented along the central axis.

[0005] By integrating the water distributor into the housing of the pump device, a particularly compact construction of the pump device can be achieved. Furthermore, since all fluid outlets are oriented along the central axis, the pump device can be completely vented without any additional measures.

[0006] The washing container is preferably cuboid-shaped. The washing container can be closed by means of a door which is pivotably stopped on the washing container. A plurality of washing item receptacles, for example a lower basket, an upper basket and a cutlery drawer, can be provided in the washing container. Washing items can be accommodated in the washing item receptacles, to which washing items washing liquid and / or fresh water is applied by means of the hydraulic circuit. "Applying" can here include spraying or wetting the washing items. "Rinse liquid" is understood here as water with cleaning agent and / or detached dirt particles from the washing items.

[0007] The hydraulic circuit can have a plurality of spraying devices, for example in the form of spray arms and / or power spray zones, which are arranged in the interior of the washing container. The spraying devices can be rotatably supported in the washing container. The spraying devices are connected with the fluid outlet of the pump device by means of an input line. The pump device can be part of the hydraulic circuit. However, this is not mandatory.

[0008] The pump device "imposes" washing liquid and / or fresh water on the hydraulic circuit at present means, in particular, that the pump device pumps the washing liquid and / or fresh water through the hydraulic circuit. The pump device is, in particular, a circulation pump, preferably a heating pump. The pump device can therefore also be referred to as a circulation pump or a heating pump. It is particularly preferred that the pump device is a compact heating pump and can therefore also be referred to as a compact heating pump.

[0009] The pump device is provided for circulating the washing liquid and / or fresh water in the washing container or in the hydraulic circuit. In addition, the pump device can also be provided to introduce heat into the washing liquid and / or fresh water. The pump device can be fastened on a pump bowl of the domestic dishwasher. The pump device can be positioned completely or at least partially below the pump bowl.

[0010] Preferably, the pump device is essentially rotationally symmetrical with respect to a central axis. "Essentially" means here that the components of the pump device are rotationally symmetrical with respect to the central axis, wherein it cannot be excluded that further components of the pump device are not rotationally symmetrical with respect to the central axis. The central axis is oriented, in particular, parallel to the direction of gravity.

[0011] The central axis is "oriented" along or parallel to the direction of gravity at present can mean, in particular, that the central axis is inclined or tilted with respect to the direction of gravity by up to ±20°, preferably by up to ±10°, further preferably by up to ±5°, further preferably by up to ±3°, further preferably by up to ±1°. However, the central axis can also run exactly along the direction of gravity, so that no tilt or inclination with respect to the direction of gravity occurs. Depending on the installation situation, a suitable slight tilt or inclination can be chosen.

[0012] The housing of the pump device is preferably multipart. For example, the housing can have a housing lower part, a housing upper part and a housing inner part. The housing lower part, the housing upper part and / or the housing inner part can be a plastic component, in particular a plastic injection-molded component. Thereby, the pump device can be produced cost-effectively. The housing lower part, the housing upper part and / or the housing inner part can be connected to one another in a form-fit. The form-locked connection is produced by a mutual gripping or subsequent gripping of the two components. In order to establish the form-locked connection, catch hooks, snap hooks, etc. can be provided.

[0013] The "integration" of the water distributor into the housing means in particular that the water distributor is positioned at least sectionally within the housing. It is possible here, however, for the housing to be at least sectionally part of the water distributor. For example, the housing inner part and the housing upper part mentioned above are at least sectionally part of the water distributor. The water distributor is thus not spatially separated from the pump device.

[0014] By means of the water distributor it is possible to distribute the washing liquor and / or fresh water to the different fluid outlets. It is possible here to close or open selected fluid outlets. To this end, a water distribution disc is provided which is rotatably supported in the housing. As mentioned above, the fluid outlets are in fluid connection with the spraying means. It is thus possible by means of the water distributor to apply washing liquor and / or fresh water selectively to individual spraying means. It is also possible to apply washing liquor and / or fresh water to all spraying means simultaneously.

[0015] The fluid outlets are preferably tubular. The fluid outlets can be part of the water distributor. Here, the fluid outlets can have a circular or oval cross-section. The fluid outlets are "oriented" along a central axis. This means in particular that the fluid outlets extend out of the housing along the central axis or along the axial direction of the pump device. Here, the axial direction is oriented parallel to the central axis or coincides with the central axis.

[0016] In contrast, the radial direction of the pump device is arranged in particular perpendicular to the central axis or perpendicular to the axial direction. Preferably, the pump device does not have fluid outlets which are oriented perpendicular to the central axis and thus along the radial direction. All or all fluid outlets of the pump device extend along the central axis or along the axial direction.

[0017] According to an embodiment, the water distributor has a water distribution disc which is accommodated within the housing and rotatable about the central axis for selectively opening and closing the fluid outlets.

[0018] The water distribution disc is preferably annular and comprises a plurality of through-holes by means of which individual or all fluid outlets can be opened selectively. To block or close individual or all fluid outlets, the water distribution disc is rotated such that it covers the respective one or more fluid outlets.

[0019] According to a further embodiment, the water distribution disc has a circular ring disc and a drive ring for driving the circular ring disc, wherein the drive ring is connected to the circular ring disc in a form-fit manner.

[0020] The previously mentioned through-holes of the water distribution disc are preferably provided on the ring disc. The water distribution disc is thus two-part and comprises the ring disc and a drive ring. The drive ring has, inter alia, a toothing, preferably an outer toothing, in order to drive the drive ring. Preferably, the drive ring has, in order to establish a form-locked connection between the drive ring and the ring disc, a plurality of carrier elements which extend outwardly from the end side of the drive ring on the upper side. The carrier elements are provided for form-fitting engagement into recesses provided on the ring disc, whereby the drive ring is form-fittingly connected with the ring disc. The carrier elements are preferably arranged non-uniformly around the central axis, whereby an encoding is achieved when the ring disc and the drive ring are assembled together, which prevents incorrect assembly of the water distribution disc (fool-proof design). The ring disc can be lifted from the drive ring, viewed along the central axis or viewed in the axial direction, so that the ring disc can float on the washing liquor and / or fresh water when the pump device is in operation. However, the form-locked connection between the ring disc and the drive ring is maintained here. By the floating of the ring disc, the ring disc can be pressed against the closure plate of the housing inner part on the inside in order to reliably seal the fluid outlet which should be closed.

[0021] According to a further embodiment, the drive ring is accommodated in an annular groove provided in the housing.

[0022] Preferably, the annular groove is formed into the housing upper part. The annular groove is filled with washing liquor and / or fresh water. The drive ring is located in the annular groove. The annular groove completely encircles the central axis of the pump device.

[0023] According to a further embodiment, the housing has a drain opening facing in the direction of the central axis, which is in fluid connection with the annular groove.

[0024] Exactly one drain opening can be provided. However, a plurality of drain openings can also be provided. By means of the drain opening, washing liquor and / or fresh water can flow out of the annular groove. The drain opening is "in fluid connection" with the annular groove here, inter alia, means that washing liquor and / or fresh water can flow out of the annular groove in the direction of the central axis through the drain opening.

[0025] According to a further embodiment, the drive ring is rotatably supported on guide plates which project radially into the annular groove.

[0026] Reduced friction can thereby be achieved when the drive ring is rotated. The number of guide plates is arbitrary. However, preferably at least three guide plates are provided. However, four guide plates or more than four guide plates can also be provided. Viewed in the radial direction, the guide plates project into the annular groove.

[0027] According to a further embodiment, the water distributor has a water distribution drive for driving the drive ring, wherein a drive shaft of the water distribution drive is oriented perpendicular to the central axis.

[0028] "Vertical" is to be understood here as an angle of 90° ± 10°, preferably an angle of 90° ± 5°, further preferably an angle of 90° ± 3°, further preferably an angle of 90° ± 1°, further preferably exactly 90°. The water distribution drive is an electric motor. The water distribution drive is preferably a so-called wet rotor. The water distribution drive preferably comprises a first housing part which is shaped onto a housing upper part of the pump device. A second housing part is connected in form-fitting manner, in particular latching or snapping, with the first housing part, wherein the second housing part encloses the first housing part. The housing parts enclose an interior space which is filled with washing liquid and / or fresh water F in the operation of the pump device. Furthermore, the water distribution drive comprises a stator which is attached on the outside on the second housing part and a rotatable rotor which is arranged inside the interior space. The rotor is connected in a manner resistant to relative rotation with a drive shaft which is in turn rotatably supported at the two housing parts. A worm is attached on the drive shaft which engages into a toothing of a drive ring. The toothing and the worm preferably have a spherical worm toothing. The interior space of the water distribution drive is drainable in the direction of the central axis via an annular groove in which the drive ring is accommodated and a drain opening.

[0029] According to a further embodiment, the pump device has a drive motor and a stator, the drive motor having a rotor for driving an impeller of the pump device, wherein the rotor is accommodated in a first accommodation section of the housing and wherein the stator is accommodated in a second accommodation section of the housing.

[0030] Preferably, the first accommodation section and the second accommodation section are part of a housing inner part. The first accommodation section is closed in a pot shape and in the direction of the impeller by means of a closure. The first accommodation section encloses an accommodation space in which the rotor is accommodated. The rotor is connected in a manner resistant to relative rotation with a drive shaft of the drive motor. Likewise, the impeller is connected in a manner resistant to relative rotation with the drive shaft. The drive shaft is rotatably supported on the first accommodation section and the closure. The second accommodation section is preferably likewise pot-shaped. Here, the first accommodation section and the second accommodation section are arranged in reverse, so that the second accommodation section opens away from the impeller. The second accommodation section encloses an annular accommodation space in which the stator of the drive motor is accommodated. The stator can be bonded, for example, to the first accommodation section and / or to the second accommodation section.

[0031] According to a further embodiment, the first accommodation section is arranged inside the second accommodation section.

[0032] Preferably, not only the first accommodation section but also the second accommodation section is configured rotationally symmetrical with respect to a central axis of the pump device, wherein the first accommodation section is arranged inside the second accommodation section or the second accommodation section is arranged outside the first accommodation section.

[0033] According to a further embodiment, the second accommodation section is guided through the water distribution disc.

[0034] In particular, the second accommodation section can also function as a support for the water distribution disc. The second accommodation section in particular not only passes through the drive ring but also through the circular disc of the water distribution disc.

[0035] According to a further embodiment, a diffusion chamber is configured in the housing, which diffusion chamber is delimited by the second accommodation section and the tubular heating element surrounding the second accommodation section, viewed in the radial direction of the pump device.

[0036] This in particular means that the washing liquid and / or the fresh water comes into direct contact with the tubular heating element when flowing through the diffusion chamber. The tubular heating element is of a tube shape or a hollow cylinder shape. The tubular heating element is in particular a thick-layer heating element. The diffusion chamber extends from the pump inlet of the pump device in the direction of the water distributor, in particular in the direction of the water distribution disc. Here, the diffusion chamber is initially disc-shaped from the pump inlet and annular in the region of the tubular heating element and the second accommodation section.

[0037] According to a further embodiment, the housing has a housing lower part and a housing upper part, wherein the tubular heating element is arranged between the housing lower part and the housing upper part, viewed along the central axis.

[0038] Preferably, the tubular heating element is sealed with respect to the housing lower part by means of sealing means. In order to seal the tubular heating element with respect to the housing upper part, a sealing element can likewise be provided, for example in the form of an O-ring.

[0039] According to a further embodiment, the diffusion chamber widens from the pump inlet of the pump device in the direction of the water distributor.

[0040] This in particular is to be understood as meaning that the cross section of the diffusion chamber increases from the pump inlet in the direction of the water distributor.

[0041] According to a further embodiment, the pump inlet is configured rotationally symmetrical about the central axis and is oriented along the central axis.

[0042] In particular, the pump inlet forms the lowest point of the pump device. It is thereby possible for the pump device to be completely emptied of washing liquid and / or fresh water. A suction connection can be connected at the pump inlet, which in turn is in fluid connection with a pump sump of the domestic dishwasher.

[0043] According to a further embodiment, the housing has an integral housing inner part, on which the fluid outlet, the first accommodation section and the second accommodation section are formed.

[0044] The "one-piece" or "single-piece" construction of the housing inner part is to be understood here in particular as meaning that the housing inner part is not assembled from different sub-components, but rather that the fluid outlet, the first accommodation section and the second accommodation section form a common component, i.e. the housing inner part. "Material- one" means here that the housing inner part is continuously made of the same material. For example, the housing inner part is made of plastic. The housing inner part can be a plastic injection-moulded component. Correspondingly, the housing lower part and / or the housing upper part can also be a one-piece, in particular material- one, component. The housing inner part can be at least section-wise part of the water dispenser.

[0045] According to an advantageous refinement of the application, the housing of the pump device according to the application has a liquid conveying channel in its interior. Here, viewed from below to above along the central axis, in successive height positions as functional sections of the liquid conveying channel of the pump device according to the application a pump inlet, a pump chamber or impeller chamber with a rotatably driven impeller or runner for conveying the cleaning liquid F there, a pressure chamber and / or a diffusion chamber arranged downstream of the pump chamber, a water distribution element rotatable about the central axis in an upper end section of the pressure chamber and / or diffusion chamber, and a plurality of fluid outlets of the pump device are provided. Here, the liquid conveying channel is understood to be a cavity provided in the housing of the pump device according to the application, which is filled and traversed by the cleaning liquid in the conveying operation of the pump device. By this successive sequence of the different functional sections of the liquid conveying channel of the pump device according to the application in height, viewed from the pump inlet to the discharge of the respective fluid outlet, the cleaning liquid is guided in the housing from below to above against the direction of gravity. A deflection and / or reflection of the cleaning liquid with a directional component in the direction of gravity, that is to say in the opposite direction of its conveying direction which points from below to above, is largely avoided. Thus, a counterflow of the cleaning liquid conveyed by the runner from below to above on its path through the liquid conveying channel is largely avoided. Furthermore, the successive arrangement of the individual functional sections of the liquid conveying channel facilitates a simple construction of the pump device according to the application and a resulting simple manufacture. In turn, the pump device according to the application can be easily disassembled and each important component of the pump device according to the application can be accessed, for example in the case of maintenance. Furthermore, by this sequence of the different functional sections of the liquid conveying channel it is ensured that when the drive motor for the impeller is switched off and the impeller is at a standstill, the cleaning liquid F can flow out of the liquid conveying channel completely downwards through the pump inlet only by the action of gravity. In order to empty the liquid conveying channel completely, it is particularly advantageous here that the pump inlet is expediently provided at the lowest point of the pump device according to the application. Thus, it is avoided that residual water remains in the liquid conveying channel of the housing of the pump device according to the application when the drive motor of the impeller of the pump device according to the application is not in operation. Thereby, a so-called dirty water residue and / or a lye residue hardly or completely does not occur again when the washing tank is changed from a sub-washing process, for example a cleaning process, to an intermediate cleaning process or a final cleaning process of a subsequent sub-washing process, for example a dishwashing program to be carried out. Since now, upon a change of the washing tank, the cleaning liquid for the respective sub-washing process can be removed at least approximately completely from the pump device according to the application and from the hydraulic circuit, in particular by means of a pump-out of the pump sump by means of a pump emptying, and fresh water is supplied to the hydraulic circuit for the next sub-washing process, which fresh water cannot mix with dead water or residual water from a previous sub-washing process.Thus there are fewer or no longer any spots on the cleaned and subsequently dried washing stock caused by dirt particles, limestone particles, etc., that is to say, this leads to an improved cleaning result. In particular, the intermediate cleaning process, which has hitherto been provided between the cleaning process and the final cleaning process, can now be performed with less fresh water quantity, if necessary, or can even be completely dispensed with, since it is no longer mandatory to flush out the residual water or dead water mixed with dirt particles and / or cleaning agent from the pump device.

[0046] According to an alternative refinement of the application, a liquid delivery channel, in particular a diffusion chamber, can be configured in the housing of the pump device, which liquid delivery channel is defined by the second accommodation section and a housing outer part surrounding the second accommodation section, viewed in the radial direction of the pump device, wherein at least one tubular heating body is arranged in the liquid delivery channel.

[0047] According to an alternative refinement of the application, the housing can have a housing outer part, in particular one-piece or unitary, which housing outer part, in particular in addition to the fluid outlet, defines a liquid delivery channel which is at least almost rotationally symmetrical with respect to the center axis, viewed outwardly, wherein at least one tubular heating body is arranged in the liquid delivery channel. The structure or configuration of the pump device according to the application can thus be further simplified. If the housing of the pump device consists of only two parts, the housing outer part and the housing inner part, this can already be sufficient. In any case, a cover can also be provided with which an upper opening of the housing inner part can be closed. The stator arranged in the housing inner part between its first accommodation section and its second accommodation section is thus protected in a reliable manner from moisture and / or washing liquid. The housing outer part and the housing inner part, which is inserted or embedded into the housing outer part, can be connected to one another mechanically, for example, by means of a snap connection, a click connection and / or a bayonet connection and / or other couplings. By arranging the at least one tubular heating body in the liquid delivery channel formed between the housing inner part and the housing outer part, an improved heat transfer between the tubular heating body and the washing liquid F delivered from below to above by means of the impeller or pump wheel of the pump device via the liquid delivery channel is additionally achieved.

[0048] In particular, the second accommodation section forms at least one subsection of the inner delimiting wall of the liquid delivery channel.

[0049] The tubular heating body is suitably arranged in the liquid-conveying channel along its flow path, viewed behind the impeller of the pump device, in particular at least approximately rotationally symmetrically with respect to the central axis, preferably at least approximately concentrically with respect to the second accommodation section. Suitably, the tubular heating body is arranged with respect to the central axis or the central axis line of the preferably circular-cylindrical configured liquid-conveying channel line-symmetrically such that, viewed in each flow cross-sectional plane of the liquid-conveying channel, at least approximately the same gap width is obtained for the cleaning liquid flowing there between the tubular heating body and the delimiting wall of the interior of the liquid-conveying channel formed by the housing inner part and between the tubular heating body and the delimiting wall of the exterior of the liquid-conveying channel formed by the housing outer part. The tubular heating body can thus be flowed through by the conveyed cleaning liquid to a large extent uniformly, which facilitates the heat transfer from the tubular heating body to the cleaning liquid flowing through the tubular heating body.

[0050] It can be particularly sufficient and / or advantageous if the tubular heating body is arranged in the liquid-conveying channel with substantially one turn or one sub-turn and around the central axis, preferably around the second accommodation section of the housing inner part. Thereby, impairments of the flow conditions due to the tubular heating body in the liquid-conveying channel can be minimized or, as far as possible, avoided. In connection therewith and / or structurally, it can be particularly advantageous if the turn or sub-turn of the tubular heating body is arranged at least approximately horizontally or in a plane orthogonal to the central axis. It is, however, also possible that the tubular heating body can also be wound around the central axis in the liquid-conveying channel with more than one turn, for example if a greater heat transfer to the cleaning liquid is required.

[0051] Furthermore, the present application also relates to a pump device for conveying water according to claim 17, a household appliance for guiding water per se, in particular a household dishwasher for the implementation of the aforementioned and / or configured according to claims 1 to 16. Such a pump device according to the application can be implemented in particular in a washing machine, a drying machine or another household appliance for guiding water. The pump device can be implemented in particular as described above and / or configured according to claims 1 to 16.

[0052] Further possible implementations of the household dishwasher also include combinations of features or embodiments described previously or subsequently without explicit reference. Here, the skilled person can also add individual aspects as improvements or supplements to the respective basic shape of the household dishwasher.

[0053] Further advantageous design solutions and aspects of the household dishwasher are the subject matter of the dependent claims and the embodiments of the household dishwasher described below. Furthermore, the household dishwasher is explained in more detail according to preferred embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 diagrammatic perspective view showing an embodiment of a household dishwasher;

[0055] Figure 2 schematic cross-sectional view of a domestic dishwasher according to Figure 1 ;

[0056] Figure 3 schematic cross-sectional view of an embodiment of a pump arrangement for a domestic dishwasher according to Figure 1 ;

[0057] Figure 4 schematic top view of a pump arrangement according to Figure 3 ;

[0058] Figure 5 schematic top view of an embodiment of a water distribution tray for a pump arrangement according to Figure 3 ;

[0059] Figure 6 schematic cross-sectional view of a water distribution tray according to Figure 5 ;

[0060] Figure 7 schematic perspective exploded view of a water distribution tray according to Figure 5 ;

[0061] Figure 8 schematic perspective view of an embodiment of a drive ring for a water distribution tray according to Figure 5 ;

[0062] Figure 9 schematic cross-sectional view of an embodiment of a water distributor for a pump arrangement according to Figure 3 ;

[0063] Figure 10 schematic cross-sectional view of an embodiment of a fluid outlet for a pump arrangement according to Figure 3 ;

[0064] Figure 11 schematic top view of an embodiment of a sealing means for a pump arrangement according to Figure 3 ;

[0065] Figure 12 schematic cross-sectional view of a sealing means according to Figure 11 ;

[0066] Figure 13 schematic top view of an embodiment of a blank for manufacturing a stator of a drive motor and a stator of a water distribution drive of a pump arrangement according to Figure 3 ; and

[0067] Figure 14 an embodiment of an assembly composed of a blank according to Figure 13 , and

[0068] Figure 15 schematic cross-sectional view of an advantageous embodiment variant of the pump device in the hydraulic circuit of a domestic dishwasher according to Figure 1 and Figure 2 schematic cross-sectional view of an advantageous embodiment variant of the pump device in the hydraulic circuit of a domestic dishwasher according to Figure 3 schematic cross-sectional view of an advantageous embodiment variant of the pump device in the hydraulic circuit of a domestic dishwasher according to DETAILED DESCRIPTION

[0069] In the drawings, identical or functionally identical elements are provided with the same reference signs unless stated otherwise.

[0070] Figure 1 A schematic perspective view showing an embodiment of a domestic dishwasher 1 is shown. The domestic dishwasher 1 comprises a washing container 2 which can be closed, in particular watertight, by means of a door 3. To this end, sealing means can be provided between the door 3 and the washing container 2. The washing container 2 is preferably cuboid. The washing container 2 can be arranged in a housing of the domestic dishwasher 1. The washing container 2 and the door 3 can form a washing space 4 for rinsing the objects to be washed.

[0071] The door 3 is shown in its open position in Figure 1 The door 3 can be closed or opened by means of a pivoting about a pivot axis 5 provided at a lower end of the door 3. The washing container 2 has a bottom 7, a cover 8 arranged opposite the bottom 7, a rear wall 9 arranged opposite the closed door 3 and two side walls 10, 11 arranged opposite one another. The bottom 7, the cover 8, the rear wall 9 and the side walls 10, 11 can be made, for example, of stainless steel sheet. Alternatively, for example, the bottom 7 can be made of a plastic material.

[0072] The domestic dishwasher 1 further has at least one object receptacle 12 to 14. Preferably, a plurality, for example three, object receptacles 12 to 14 can be provided, wherein the object receptacle 12 can be a lower object receptacle or lower basket, the object receptacle 13 can be an upper object receptacle or upper basket and the object receptacle 14 can be a cutlery drawer. As Figure 1 As further shown, the object receptacles 12 to 14 are arranged one above the other in the washing container 2. Each object receptacle 12 to 14 can be selectively moved into or out of the washing container 2. In particular, each object receptacle 12 to 14 can be pushed or moved into the washing container 2 in a push-in direction E and can be pulled or moved out of the washing container 2 against the push-in direction E in a pull-out direction A.

[0073] Figure 2A highly schematic cross-sectional view of the domestic dishwasher 1 is shown. In addition to the washing container 2, the domestic dishwasher 1 comprises a base support 15 which carries the washing container 2. The base support 15 is, for example, a plastic component, in particular a plastic injection-moulded component.

[0074] A pump sump 16 is arranged on the base 7. The pump sump 16 is pot-shaped and extends out of the base 7 downwards in the orientation of the arrow. Figure 2 The pump sump 16 can be a plastic component, in particular a plastic injection-moulded component. A tubular outlet 17 leads out of the pump sump 16. The pump sump 16 is covered by means of a sieve system 18. The sieve system 18 can comprise a coarse filter and a fine filter.

[0075] A pump device 19 is connected to the outlet 17. The pump device 19 is a circulation pump, in particular a heating pump, and can therefore also be referred to as a circulation pump per se. In particular preferably, the pump device 19 is a compact heating pump and can therefore also be referred to as a compact heating pump per se. The pump device 19 is arranged to circulate the washing liquid and / or fresh water F. Furthermore, the pump device 19 is also arranged to introduce heat into the washing liquid and / or fresh water F. The pump device 19 can be fastened on the pump sump 16. The pump device 19 is preferably arranged completely or at least partially below the pump sump 16.

[0076] The pump device 19 is essentially rotationally symmetrical with respect to a symmetry axis or centre axis 20. The centre axis 20 is oriented parallel to the direction of gravity g. The pump device 19 has a pump 21 which is in fluid connection with the outlet 17 by means of a suction connection 22, so that the pump device 19 can suck the washing liquid and / or fresh water F from the pump sump 16 via the suction connection 22 and the outlet 17.

[0077] In addition to the pump 21, the pump device 19 has a water distributor 23 which is integrated in the pump device 19. By means of the water distributor 23, the washing liquid and / or fresh water F delivered by the pump device 19 can be selectively distributed to different spray means 24, 25, 26 arranged in the washing container 2. By means of the water distributor 23, the spray means 24, 25, 26 can be selectively applied or not applied with washing liquid and / or fresh water F.

[0078] The spray means 24, 25 can be spray arms, while the spray means 26 can be a top-mounted carousel. In addition, an engageable powerful spray zone or screen cleaning nozzle (not shown) can also be provided. The spray means 24, for example, is rotatably mounted on the base 7, on the pump sump 16 or on the pump device 19 about a rotation axis 27 below the washware receptacle 12. The spray means 24 has a nozzle which sprays the washing liquid and / or fresh water F upwards into the washware receptacle 12 in the orientation of the arrow. Figure 2

[0079] ​The spraying device 25 can be mounted on the cleaning material receiving portion 13 in a manner that allows it to rotate about the rotation axis 28. The spraying device 25 also has a nozzle configured to spray... Figure 2 The spraying device 26 sprays detergent and / or fresh water F downwards and / or upwards in a directional manner. The spraying device 26 is supported on the ceiling 8 in a manner that allows it to rotate about the axis of rotation 29. The spraying device 26... Figure 2 The washing liquid and / or fresh water F are applied from the top to the washing container 14.

[0080] The spraying device 24 is fluidly connected to the pump unit 19, and particularly to the water distributor 23, via the inlet line 30. The pump unit 19 can apply detergent and / or fresh water F to the spraying device 24 via the inlet line 30.

[0081] An input line 31 is provided for the spraying device 25, which fluidly connects the spraying device 25 to the pump assembly 19. The pump assembly 19 can apply detergent and / or fresh water F to the spraying device 25 via the input line 31.

[0082] An input line 32 is provided for the spraying device 26, which fluidly connects the spraying device 26 to the pump assembly 19. The pump assembly 19 can apply detergent and / or fresh water F to the spraying device 26 via the input line 32.

[0083] Here, each spraying device 24, 25, 26 can be equipped with its own input lines 30, 31, 32. Alternatively, all spraying devices 24, 25, 26 can also have a common input line, which branches out. In particular, the input lines 30, 31, 32 are formed from a common component, especially from a common plastic injection molded component. The input lines 30, 31, 32 are guided along the rear wall 9 from the bottom 7 toward the ceiling 8. Here, the input lines 30, 31, 32, or at least a portion thereof, can pass through the screening system 18.

[0084] Preferably, the pump assembly 19 has a separate connector or fluid outlet for each input line 30, 31, 32. The pump assembly 19, spray devices 24, 25, 26, and input lines 30, 31, 32 together constitute the hydraulic circuit 33 of the household dishwasher 1. The pump assembly 19 circulates the washing liquid and / or fresh water F within this hydraulic circuit 33. The pump assembly 19 can be part of the hydraulic circuit 33; however, this is not mandatory.

[0085] The household dishwasher 1 also includes an adjustment and control device 34. Different cleaning programs of the household dishwasher 1 can be executed by means of the adjustment and control device 34, for example. For this purpose, the cleaning programs can be stored or stored in the adjustment and control device 34. The adjustment and control device 34 is preferably arranged outside the cleaning container 2.

[0086] The regulating and control device 34 can be arranged in or at the door 3. Preferably, the regulating and control device 34 is arranged on the upper edge of the door 3 (not shown). However, the regulating and control device 34 can also be accommodated in the base frame 15. The regulating and control device 34 can be operated or manipulated by means of operating elements, not shown. These operating elements can comprise, for example, keys, buttons and / or a touch screen. These operating elements can be attached to the door 3.

[0087] The pump device 19 can be manipulated by means of the regulating and control device 34. For example, the pump 21 can be switched on and off and / or the rotational speed thereof can be changed by means of the regulating and control device 34. The regulating and control device 34 can receive and evaluate information of the pump device 19, for example the rotational speed of the pump 21 and / or the motor current of the pump 21. Furthermore, the regulating and control device 34 can also manipulate the water distributor 23 in order to selectively switch on or off the spray devices 24, 25, 26.

[0088] The washing goods G to be cleaned are arranged in the washing container 2. The washing goods G can comprise, for example, glasses, plates, pots, bowls, cutlery and the like. In particular, the washing goods G are accommodated in the washing good accommodation 12, 13, 14, not shown in Figure 2 By means of the spray devices 24, 25, 26, the washing goods G can be supplied with washing liquid and / or fresh water F.

[0089] Figure 3 A schematic sectional view of an embodiment of the pump device 19 is shown. The pump device 19 is assigned an axial direction AX, which extends from below to above in the orientation of the Figure 3 The axial direction AX is congruent with or oriented parallel to the center axis 20. Furthermore, the pump device 19 is assigned a radial direction R. The radial direction R is oriented perpendicular to and away from the center axis 20. Thus, the axial direction AX and the radial direction R are oriented perpendicular to each other.

[0090] As mentioned above, the pump device 19 has the pump 21 and the water distributor 23. The pump device 19 differs from the pump 21 in that the pump device 19 has the water distributor 23 in addition to the pump 21.

[0091] The pump device 19 has a housing 35, which has a housing lower part 36, a housing upper part 37 and a housing inner part 38. The housing lower part 36 has a pump inlet 39, on which the suction connection 22 is connected. For example, the suction connection 22 is inserted onto the pump inlet 39 and sealed with respect to the pump inlet by means of a sealing element, for example in the form of an O-ring. The housing 35 is essentially rotationally symmetrical with respect to the center axis 20.

[0092] A tubular heating element 40 is placed between the housing lower part 36 and the housing upper part 37. The tubular heating element 40 is preferably a thick-layer heating element. The tubular heating element 40 is sealed with respect to the housing lower part 36 and the housing upper part 37 by means of a sealing element, for example in the form of an O-ring. The tubular heating element 40 is of a tube shape or a hollow-cylinder shape. Here, the tubular heating element 40 is configured rotationally symmetrical with respect to the central axis 20. The tubular heating element 40 is thereby held between the housing lower part 36 and the housing upper part 37. In the operation of the pump device 19, the washing liquid and / or the fresh water F flows along the tubular heating element 40 on the inside.

[0093] The housing lower part 36 and the housing upper part 37 are connected to one another in a form-fit (not shown). To this end, catch hooks, snap hooks or the like can be provided, which enable a form-fit connection of the housing lower part 36 and the housing upper part 37. The form-fit connection is produced by a mutual or subsequent gripping of the two connection partners, which are currently the housing lower part 36 and the housing upper part 37. The housing inner part 38 is connected in a form-fit to the housing upper part 37. To this end, corresponding catch hooks, snap hooks or the like are also provided. The housing lower part 36, the housing upper part 37 and the housing inner part 38 are plastic components, in particular plastic injection-molded components.

[0094] The housing lower part 36 accommodates an impeller 41 arranged downstream of the pump inlet 39. The impeller 41 is driven by a drive motor 42. The drive motor 42 is an electric motor. The impeller 41 can also be referred to as a turbine. The drive motor 42 comprises a drive shaft 43 which is connected to the impeller 41 in a rotationally fixed manner and which, in the operation of the pump device 19, rotates about the central axis 20. In addition to the impeller 41, a rotor 44 of the drive motor 42 is connected to the drive shaft 43 in a rotationally fixed manner.

[0095] The rotor 44 is rotatably supported in a pot-shaped first accommodation section 45 of the housing inner part 38 about the central axis 20. The first accommodation section 45 encloses an accommodation space 46 in which the rotor 44 is accommodated. The accommodation space 46 can be filled with washing liquid and / or fresh water F. The first accommodation section 45 is closed in the downward direction, i.e. in the direction toward the impeller 41, by means of a closure 47. The drive shaft 43 is guided through the closure 47 and can be supported thereon. Figure 3 The rotor 44 is rotatably supported in a pot-shaped first accommodation section 45 of the housing inner part 38 about the central axis 20. The first accommodation section 45 encloses an accommodation space 46 in which the rotor 44 is accommodated. The accommodation space 46 can be filled with washing liquid and / or fresh water F. The first accommodation section 45 is closed in the downward direction, i.e. in the direction toward the impeller 41, by means of a closure 47. The drive shaft 43 is guided through the closure 47 and can be supported thereon.

[0096] The housing inner part 38 comprises, in addition to the first accommodation section 45, a second accommodation section 48. The second accommodation section 48 is also pot-shaped. However, in contrast to the first accommodation section 45, the second accommodation section 48 is open on the upper side rather than on the lower side in the orientation. Figure 3 The first accommodation section 45 is arranged within the second accommodation section 48. The second accommodation section 48 thus has a greater diameter than the first accommodation section 45.

[0097] An annular accommodation space 49 is provided between the first accommodation section 45 and the second accommodation section 48. A stator 50 of the drive motor 42 is arranged in the accommodation space 49. The stator 50 can be bonded to the first accommodation section 45 and / or to the second accommodation section 48.

[0098] The pump 21 is formed, inter alia, by the drive motor 42, the impeller 41 and at least by parts of the housing 35. The tubular heating element 40 can also be part of the pump 21. In particular, the two accommodation sections 45, 48 of the housing inner part 38 are part of the pump 21. In contrast thereto, the pump device 19 has, in addition to the pump 21, also the water distributor 23.

[0099] Figure 4 A schematic top view of the pump device 19 is shown. The housing inner part 38 has a plurality of fluid outlets 51, 52, 53, 54, to which the input lines 30, 31, 32 are connected. For the case in which three spray means 24, 25, 26 are provided, exactly three fluid outlets 51, 52, 53, 54 are also provided. For the case in which, for example, four spray means 24, 25, 26 are provided, correspondingly four fluid outlets 51, 52, 53, 54 are also provided.

[0100] In the present case, the fluid outlet 51 is assigned to the spray means 24. Here, the fluid outlet 51 can at the same time serve as a support for the spray means 24. The fluid outlet 52 is an additional outlet, which can be assigned, for example, to a not shown powerful spray zone. The fluid outlet 53 is assigned to the spray means 26 and the fluid outlet 54 is assigned to the spray means 25. However, the assignment can also be chosen differently.

[0101] The fluid outlets 51, 52, 53, 54 are tubular and extend along the central axis 20 or in the axial direction AX. Here, the fluid outlets 51, 52, 53, 54 can each have a circular or elliptical or oval cross section. In the operation of the pump device 19, washing liquid and / or fresh water F can be discharged through the fluid outlets 51, 52, 53, 54.

[0102] The fluid outlets 51, 52, 53, 54 extend out of a closing plate 55 of the housing upper part 37, which is closed in the end region. A tubular or hollow-cylindrical connection section 56 extends around the closing plate 55, by means of which the housing inner part 38 is connected with the housing upper part 37.

[0103] Returning now to Figure 2 Between the housing inner part 38, in particular the closing plate 55, and the housing upper part 37, a water distribution disc 57 is arranged, which can be rotated about the central axis 20 and which is also shown in the top view of Figure 5 . Figure 6A schematic sectional view of the water distribution disc 57 is shown. Figure 7 A schematic perspective exploded view of the water distribution disc 57 is shown. The water distribution disc 57 is two-part and has a circular ring disc 58 and a drive ring 59, which is arranged Figure 8 is shown in a separate schematic perspective view.

[0104] The water distribution disc 57 is part of the water distributor 23. The water distribution disc 57 is configured rotationally symmetrical about the central axis 20. The water distribution disc 57 has a centrally arranged through-hole 60. The through-hole 60 is arranged in particular on the annular circular ring disc 58. The through-hole 60 is preferably circular. Furthermore, the water distribution disc 57 has a plurality of through-holes 61, 62, 63, which penetrate the circular ring disc 58, with the aid of which the fluid outlets 51, 52, 53, 54 can be selectively blocked or released by rotation of the water distribution disc 57.

[0105] The through-holes 61, 62, 63 can be circular. The through-holes 61, 62, 63 can be slot-shaped. With the aid of the slot-shaped geometry, a plurality of fluid outlets 51, 52, 53, 54 can be released simultaneously. The number of through-holes 61, 62, 63 can correspond to the number of fluid outlets 51, 52, 53. However, this is not mandatorily necessary. With the aid of the water distribution disc 57, in particular with the aid of the circular ring disc 58, the fluid outlets 51, 52, 53, 54 can be combined with one another at will. Thus, for example, it is possible to release the fluid outlets 51, 52 and to shut off the fluid outlets 53, 54.

[0106] The water distribution disc 57, in particular the circular ring disc 58, is guided on the inside at its through-hole 60 with the aid of guide segments 64, 65, 66, such that the water distribution disc 57 can be supported rotationally about the central axis 20. The number of guide segments 64, 65, 66 is arbitrary. However, it is particularly preferred that three guide segments 64, 65, 66 are arranged uniformly distributed about the central axis 20. The guide segments 64, 65, 66 are in particular part of the housing inner part 38. Between the guide segments 64, 65, 66, the washing liquor and / or the fresh water F can flow radially inwards towards the central axis 20 from the water distribution disc 57. However, instead of the guide segments 64, 65, 66 spaced apart from one another, it is also possible to provide a continuous annular guide segment (not shown). In this case, the guide segment has discharge openings oriented in the direction of the central axis 20.

[0107] The circular ring disc 58 has recesses 67, 68, 69 on the outside facing away from the through-hole 60. Preferably, exactly three recesses 67, 68, 69 are provided. The recesses 67, 68, 69 are preferably arranged non-uniformly distributed about the central axis 20.

[0108] The drive ring 59 has an annular base section 70. On the outer side of the base section 70, a circumferential toothing 71, in particular a helical toothing, is attached. Carrying elements 73, 74, 75 extend from the end side 72 of the base section 70, which is oriented upward. The carrying elements 73, 74, 75 are designed for form-fitting engagement into the recesses 67, 68, 69 of the circular disk 58, so that the drive ring 59 is form-fittingly connected with the circular disk 58. The carrying elements 73, 74, 75 are preferably arranged non-uniformly around the center axis 20, so that an encoding is achieved when the circular disk 58 and the drive ring 59 are assembled together, which prevents incorrect assembly (fool-proof design). Figure 8

[0109] Viewed along the center axis 20 or axial direction AX, the circular disk 58 can be lifted off the drive ring 59, so that the circular disk 58 can float on the washing liquid and / or fresh water F when the pump device 19 is in operation. However, the form-fitting connection between the circular disk 58 and the drive ring 59 is maintained here.

[0110] The water distribution disk 57 or circular disk 58, which arbitrarily opens and closes the different fluid outlets 51, 52, 53, 54, is shaped as a circular ring, so that the water distribution disk or circular disk can be guided on an inner thrust diameter or bearing diameter and can be driven on the outer side of the water distribution disk or circular disk, as will be explained further below. Preferably, the inner diameter of the circular disk 58 is larger than the outer diameter of the stator 50 of the drive motor 42. On the basis of this arrangement, at least three of the fluid outlets 51, 52, 53, 54 can be opened and closed in a respective combination on the same degree circle. However, four or five fluid outlets 51, 52, 53, 54 are also possible. Furthermore, there is the possibility that the fluid outlets 51, 52, 53, 54 are arranged at a greater distance from one another than is possible in the solutions so far, which results in a shorter path to the different spray means 24, 25, 26.

[0111] Figure 9 A schematic sectional view of an embodiment of the water distributor 23 is shown. In addition to the circular disk 58 (not shown) and the drive ring 59, the water distributor 23 also comprises at least a part of the housing inner part 38, i.e. the fluid outlets 51, 52, 53, 54 and the closure plate 55, at least a part of the housing upper part 37 and a water distribution drive 76 for enabling the water distribution disk 57 to rotate around the center axis 20, so that the fluid outlets 51, 52, 53, 54 can be selectively shut off and released.

[0112] ​The water dispensing drive 76 has a first housing part 77 which is formed on the housing upper part 37. A second housing part 78 is connected form-fittingly, in particular snap-locked or snapped, to the first housing part 77, wherein the second housing part 78 encloses the first housing part 77. Between the first housing part 77 and the second housing part 78 a sealing element, for example in the form of an O-ring, can be provided. The housing parts 77, 78 enclose an inner space 79 which is filled with washing liquid and / or fresh water F in the operation of the pump device 19.

[0113] Furthermore, the water dispensing drive 76 comprises a stator 80 which is attached on the outside to the second housing part 78 and a rotatable rotor 81 which is arranged inside the inner space 79. The rotor 81 is connected to a drive shaft 82 in a manner which is resistant to relative rotation, which in turn is rotatably supported at both housing parts 77, 78. On the drive shaft 82 a worm 83 is attached which engages into the toothing 71 of the drive ring 59. Here, the lower edge of the worm 83 is arranged not lower than the lower edge of the drive ring 59, so that the inner space 79 can be drained. The water dispensing drive 76 is a wet rotor. The water dispensing drive 76 is an electric motor.

[0114] The drive ring 59 is accommodated in an annular groove 84 which is formed into the housing upper part 37 and which is filled with washing liquid and / or fresh water F. A plurality of guide plates 85, 86, 87, 88 radially project into the annular groove 84, on the inside of which the drive ring 59 is guided. The number of guide plates 85, 86, 87, 88 is arbitrary. Preferably, at least three guide plates 85, 86, 87, 88 are provided. The annular groove 84 can be drained in the direction of the central axis 20 via a drain 89. The inner space 79 is in fluid connection with the annular groove 84. Thereby the inner space 79 can also be drained in the direction of the central axis 20 via the annular groove 84 and the drain 89.

[0115] The inner space 79 and the annular groove 84 form a fluid space 90 which is filled with washing liquid and / or fresh water F. Inside the fluid space 90 there are the rotor 81, the drive shaft 82, the worm 83 and the drive ring 59. Therefore no moving seals are required.

[0116] In order to be able to vary the required electrical input power and the direction of rotation of the water dispensing drive 76, the water dispensing drive 76 is configured as a brushless motor. In particular, the water dispensing drive 76 is a permanent magnet synchronous motor (PMSM). Preferably, the water dispensing drive 76 is a brushless direct current electric motor (BLDC). The water dispensing drive 76 is electronically commutated. As water dispensing drive 76 a brushless alternating current motor (BLAC) can also be used.

[0117] The water dispensing drive 76 is embodied as a wet rotor, so that no losses occur due to moving seals during the operation of the pump device 19. Furthermore, the worm 83 on the driven shaft 82 provides the possibility of transmitting the maximum transmission ratio and thus the maximum torque with only one transmission stage to the water dispensing disc 57 with the smallest possible electrical input power. The transmission ratio between the worm 83 and the drive ring 59 is preferably in the range of 1 : 50 to 1 : 250. Preferably, a hard ferrite ring is used as a material for the rotor 81. Thereby, a corrosion protection can be dispensed with.

[0118] As advantages of this previously described arrangement, mention can be made of the minimization of losses caused by moving seals, the absence of wear on the service life of the pump device 19 on the seals and a dirt-tolerant transmission mechanism, since the worm 83, when it rotates, removes dirt from the toothing 71 of the drive ring 59. This offers particular advantages with respect to spur gear toothing. The worm 83 preferably has a spherical worm toothing.

[0119] Furthermore, a change in the direction of rotation and a change in the rotational speed are possible. With only one transmission stage, the largest possible transmission ratio can be produced. The worm 83 can be embodied as single-headed. The drive ring 59 has the largest possible diameter in order to produce the largest possible transmission ratio in order to produce the largest possible torque with the smallest possible water dispensing drive 76. This is resource-saving.

[0120] Depending on the type of motor selected for the water dispensing drive 76, suitable sensor functions can be introduced. The water dispensing drive 76 can be positioned at 90° or at a specific angle with respect to the drive ring 59, so that no blind hole is produced in which washing liquid and / or fresh water F or dirt can remain. The water dispenser 23 is thus dirt-tolerant.

[0121] By using the worm 83 and the toothing 71 of the drive ring 59, self-locking can be achieved, so that the water dispensing disc 57 cannot be unintentionally rotated. Even if the friction between the drive ring 59 and the housing upper part 37 is large, the high transmission ratio ensures that the water dispensing disc 57 can always be reliably rotated.

[0122] The previously explained arrangement has a series of advantages. Advantageously, the sealing point, at which pressure is applied between the pump 21 and the water dispenser 23, is dispensed with. This leads to a reduced construction height and thus to a lower space requirement. The water requirement and the so-called circulation quantity can be reduced. With the pump device 19, a circulation pump system with higher efficiency can be realized. A plurality of possible positions and / or combinations of open and closed fluid outlets 51, 52, 53, 54 are obtained. A uniform inflow into the fluid outlets 51, 52, 53, 54 is achieved. Furthermore, the possibility of spatially separating the fluid outlets 51, 52, 53, 54 is produced.

[0123] The water distribution disc 57 is therefore embodied in two parts inside the pump device 19. The circular disc 58 decouples as a bore disc from the drive ring 59 which serves as a drive for the circular disc 58. This arrangement enables the drive ring 59 to be driven tangentially via the toothing 71 and thus enables the bearing clearance between the drive ring 59 and the drive worm 83 to be optimally designed. Furthermore, the circular disc 58 can be supported floatingly on the drive ring 59, so that the latter can float in the axial direction AX from the drive ring 59 in the event of applied water pressure and thus enable the sealed fluid outlets 51, 52, 53, 54 to be better sealed.

[0124] The floating of the circular disc 58 can be in the range from 0.2 mm to 2 mm in order to produce as little flow loss as possible in the region of the support between the circular disc 58 and the drive ring 59. The entraining elements 73, 74, 75 located on the drive ring 59 are positioned such that the circular disc 58 can only be mounted in defined positions (foolproof design). Plastic, for example polyoxymethylene (POM), is preferably used as the material for the drive ring 59 and the circular disc 58. The inner diameter of the drive ring 59 and of the circular disc 58 can be in the range from 50 mm to 120 mm. The outer diameter can vary between 90 mm and 200 mm. The thickness of the circular disc 58 is for example 1.4 mm in order to ensure a certain flexibility. Preferably, the thickness is in the range from 0.8 mm to 3 mm.

[0125] The floating support of the circular disc 58 is thus advantageously able to be achieved. This results in as many initial combinations of through-holes 61, 62, 63 in the circular disc 58 on the same circle of division as possible. Good sealing properties of the fluid outlets 51, 52, 53, 54 which are not open are able to be achieved by the floating support. The simplified floating of the circular disc 58 results from the two-part construction of the water distribution disc 57. This reduces the risk of the circular disc 58 being skewed and / or jammed.

[0126] The floating support of the circular disc 58 decouples the circular disc from the bearing clearance of the water distribution drive 76. The complexity of different water distribution discs 57 is transferred into a component which can be produced structurally simply, namely the circular disc 58. An exact bearing of the water distribution drive 76 is produced in order to achieve more exact shaft spacing tolerances in the transmission stage, since the drive ring 59 is not floating or less floating and maintains its position relative to the drive element in the form of the worm 83.

[0127] The worm 83 is caused to engage into the drive ring 59 in a defined manner. The water distributor 23 is maintenance-friendly, since the drive ring 59 can be replaced independently of the circular disk 58 in the event of wear. Reduced friction of the drive ring 59 on the housing 35 is achieved in the case of a shut-off of the pump device 19. This leads to a reduction in wear. The circular disk 58 is caused to flow in uniformly from below and thus the risk of tilting of the circular disk 58 is reduced. A plurality of closure elements is not required inside the pump device 19, but only a single closure element in the form of the circular disk 58.

[0128] Figure 10 A sectional view of an embodiment of the fluid outlet 51 is shown. All the following embodiments relating to the fluid outlet 51 can be applied accordingly to the fluid outlets 52, 53, 54. The fluid outlet 51 extends in the orientation of the arrow A out of the closure plate 55 on the upper side. The fluid outlet 51 has an asymmetric funnel geometry. Figure 10

[0129] The fluid outlet 51 comprises a tubular connection section 91. The connection section 91 can be circular or oval or elliptical in cross section. An elliptical cross section has the advantage that structure space can be saved along the radial direction R, wherein a greater flow cross section can be achieved along the radial direction R with the same structure space compared to a circular cross section. One of the input lines 30, 31, 32 is connected to the connection section 91.

[0130] Now returning to Figure 3 A diffusion chamber 92 is formed annularly around the central axis 20 between the housing lower part 36, the tubular heating element 40, the housing upper part 37 and the second receiving section 48 of the housing inner part 38. The diffusion chamber 92 extends in the direction of the water distribution disk 57 from the pump inlet 39. Here, the diffusion chamber 92 is configured rotationally symmetrical with respect to the central axis 20. Before the water distribution disk 57, the diffusion chamber 92 widens and distributes the washing liquid and / or fresh water F onto the water distribution disk 57. The water distributor 23 or the water distribution disk 57 is integrated into the diffusion chamber 92. The fluid outlets 51, 52, 53, 54 lead out of the diffusion chamber 92.

[0131] During operation of the pump device 19, the washing liquid and / or fresh water F flows in the annular diffusion chamber 92 in the flow direction S( Figure 4 ) around the central axis 20 circularly and is flowed by means of the fluid outlets 51, 52, 53, 54 released by the water distributor 23 along the axial direction AX upwards to the respective input line 30, 31, 32 in order to apply the washing liquid and / or fresh water F to the spray means 24, 25, 26.

[0132] As Figure 10 ​As shown, the transition section 93 is connected to the connection section 91 by means of which the tubular connection section 91 is connected to the closure plate 55. The transition section 93 has an asymmetric funnel geometry as described before. This geometry can also be referred to as a boot shape.

[0133] The transition section 93 has a rounding or radius 94. Opposite the radius 94, a bevel 95 is provided which transitions into the closure plate 55 by means of a radius 96 and into the connection section 91 by means of a radius 97. The transition section 93 extends completely around the connection section 91, wherein the radii 94, 96, 97 and the bevel 95 transition into one another.

[0134] The geometry of the fluid outlet 51 is adapted in the preferred flow direction S inside the pump device 19 by the radii 94, 96, 97 and the bevel 95 and by the asymmetric geometry resulting therefrom towards the connection section 91, so that an optimal inflow of the washing liquid and / or fresh water F into the fluid outlet 51 can be achieved.

[0135] This asymmetric geometry, which can also be referred to as a boot shape, forms a small spiral housing for the fluid outlet 51. Furthermore, the radii 94, 96 of the fluid outlet 51 are continued by means of radii 98, 99 over the through-holes 61, 62, 63 of the circular ring disk 58 of the water distributor 23. Furthermore, the radius 94 is also attached to the side of the fluid outlet 51 facing away from the flow, so that the washing liquid and / or fresh water F can also be flowed into the fluid outlet 51 counter to the flow direction S. Furthermore, the preferably oval cross-sectional geometry of the fluid outlet 51 or the connection section 91 makes it possible to increase the flow cross section without increasing the diameter of the water distribution disk 57 and / or the diameter of the pump device 19.

[0136] The advantage of this arrangement, which is shown in Figure 10 The advantage of this arrangement, which is shown in

[0137] Figure 11 A schematic top view showing an embodiment of the sealing means 100. Figure 12 A schematic sectional view showing the sealing means 100. The sealing means 100 is arranged to fluid-tightly seal the tubular heating element 40 with respect to the housing lower part 36.

[0138] The sealing means 100 is configured rotationally symmetrical about the center axis 20. The sealing means 100 is a sealing ring. The sealing means 100 comprises a V-shaped receiving section 101 which is received in a suitably shaped annular groove of the housing lower part 36. The receiving section 101 has an annular groove 102 which completely surrounds the center axis 20, in which the tubular heating element 40 is received. The annular groove 102 is arranged between a first leg 103 and a second leg 104 of the receiving section 101.

[0139] A deflecting section 105 extends from the second leg 104 on the upper side, which deflecting section is arranged for deflecting the washing liquid and / or fresh water F in the direction of the axial direction AX, as indicated by means of the arrow 106. The deflecting section 105 has an annular abutment surface 107 on the lower side, with which the deflecting section 105 abuts on the inside on the housing lower part 36.

[0140] The deflecting section 105 has a radius 108 facing away from the abutment surface 107. By means of the radius 108, the washing liquid and / or fresh water F is deflected, as indicated by means of the arrow 106. The radius 108 forms a fluid-facing side of the sealing means 100. On the deflecting section 105, a cylindrical outer surface 109 is arranged, which is configured rotationally symmetrical about the center axis 20. The deflecting section 105 abuts on the inside on the tubular heating element 40 with the outer surface 109.

[0141] The sealing means 100 seals the tubular heating element 40 and fixes the tubular heating element and at the same time guides the washing liquid and / or fresh water F which is discharged from the impeller 41 by means of the radius 108 or the chamfer further upwards in the direction of the tubular heating element 40. No residues of the washing liquid and / or fresh water F are formed within the pump device 19. An optimization of the hydraulic efficiency of the pump device 19, an avoidance of residues of the washing liquid and / or fresh water F within the pump device 19 and a reduction of the circulation volume of the pump device 19, in particular a reduction of the dead volume, can be achieved.

[0142] The sealing means 100 fixes the tubular heating element 40 inside the pump device 19 and at the same time seals the tubular heating element. Furthermore, the sealing means 100 with the radius 108 comprises a hydraulically optimized geometry in order to optimize the hydraulic efficiency of the pump device 19 and to minimize residues of the washing liquid and / or fresh water F within the pump device 19 after being pumped.

[0143] The V-shaped receiving section 101 fixes and seals the tubular heating element 40 and at the same time gently passes the washing liquid and / or fresh water F which leaves the impeller 41 upwards onto the tubular heating element 40 by means of the aforementioned chamfer or radius 108 on the fluid-facing side of the sealing means 100. Furthermore, the aforementioned annular groove of the housing lower part 36 is thereby filled and no residues of the washing liquid and / or fresh water F are formed within the pump device 19.

[0144] Advantages of the arrangement as set out before are an optimized hydraulic efficiency of the pump device 19, an avoidance of residual amounts of washing liquid and / or fresh water F within the pump device 19, which leads to a more hygienic design, and a reduction of the circulating amount of washing liquid and / or fresh water F and thus a reduction of dead volumes.

[0145] Now returning back Figure 3 , the impeller 41 sucks washing liquid and / or fresh water F in the operation of the pump device 19 through the suction connection 22 connected to the pump inlet 39. The washing liquid and / or fresh water F is transported via the diffusion chamber 92 upwards towards the direction of the water distributor 23, in particular towards the direction of the water distribution disc 57. The washing liquid and / or fresh water F here flows through the pump inlet 39 into the diffusion chamber 92, flows inside the diffusion chamber 92 along the radial direction R outwards to the radius 108 of the sealing means 100 and is deflected by the diffusion chamber in the orientation of the Figure 3 upwards and along the axial direction AX, i.e. against the direction of the gravitational force g, towards the water distribution disc 57.

[0146] Within the diffusion chamber 92, the washing liquid and / or fresh water F flows around the central axis 20 along the flow direction S. The flow direction S is in the present case oriented counter-clockwise. However, the flow direction S can also be oriented clockwise. The annular disc 58 of the water distribution disc 57 floats on the washing liquid and / or fresh water F, wherein the annular disc 58 is lifted from the end side 72 of the drive ring 59 and is pressed towards the closing plate 55 on the inner side.

[0147] The annular disc 58 is thereby sealed against the closing plate 55, so that the washing liquid and / or fresh water F can only flow out of the pump device 19 through those fluid outlets 51, 52, 53, 54 which are released by the annular disc 58. The form-fit connection between the annular disc 58 and the drive ring 59 is also maintained when the annular disc 58 is lifted from the drive ring 59, so that the water distribution drive 76 can rotate the water distribution disc 57 as before.

[0148] In the operation of the pump device 19, the adjustment and control means 34 can actuate the water distribution drive 76 in order to rotate the water distribution disc 57 and thus to selectively open and / or close individual or all fluid outlets 51, 52, 53, 54. It is thereby possible to individually switch on or off the spray means 24, 25, 26. It is thus possible, for example, to apply washing liquid and / or fresh water F only purposefully to two spray means 24, 25 and not to the spray means 26.

[0149] The spraying devices 24, 25, 26 can thus be activated or deactivated at will. Any activation or deactivation of the spraying devices 24, 25, 26 preferably takes place during a washing cycle carried out by means of a washing program. The washing programs can be stored in the regulation and control device 34. Any number of different washing programs can be stored in the regulation and control device 34.

[0150] The pump inlet 39 forms in particular the lowest point of the pump device 19. This results in the fact that the washing liquid and / or fresh water F is completely drained from the pump device 19 due to the force of gravity, as this is shown by means of the arrow 110 in Figure 3

[0151] The design of the aforementioned pump device 19 results in the fact that the residual amount of washing lye from one washing tank to the next is kept as small as possible during the washing process of the domestic dishwasher 1. This object is achieved in that, in particular in the pump sump 16, the residual amount of washing liquid and / or fresh water F after the pumping out is as small as possible. The important effect of reducing the residual amount of washing liquid and / or fresh water F is an improved so-called spot value after drying. This results in the fact that, when less lye is brought into the rinse tank, less cleaning agent and dirt residue can be dried and thus seen at the dish parts.

[0152] In order to ensure that the pump device 19 is completely free-running, the drive motor 42 is oriented perpendicularly to the impeller 41. That is to say, the center axis 20 extends parallel to the direction of the force of gravity g. Likewise, the fluid outlets 51, 52, 53, 54 are arranged perpendicularly. In order to ensure as low a construction height as possible, the water distributor 23 is integrated together into the pump device 19. The diffusion chamber 92 of the pump device 19 is preferably an annular gap which surrounds the drive motor 42 on one side and is delimited by the tubular heating element 40 on the other side.

[0153] The exemplary distance between the drive motor 42 and the tubular heating element 40 or the gap width of the diffusion chamber 92 is between 3 mm and 12 mm. By this arrangement, the waste heat of the drive motor 42 can also be carried away by the washing liquid and / or fresh water F. Furthermore, in this arrangement, the best possible venting of the pump device 19 is ensured, since there is no air chamber at all in the upper region of the pump device 19, in particular in the region of the water distributor 23.

[0154] ​This means that when the pump basin 16 is filled with washing liquid and / or fresh water F, the pump device 19 runs completely in parallel with the washing liquid and / or fresh water F as in two communicating pipes and absolutely no air chamber is formed, which is advantageous for the undisturbed operation of the pump device 19. The fluid outlets 51, 52, 53, 54 of the water distributor 23 to the spraying means 24, 25, 26 are located on the circular ring and can be optimally arranged there. Here, at least a portion of the fluid outlets 51, 52, 53, 54 does not have a circular flow cross section, but rather an oval flow cross section.

[0155] During the pumping process by means of the pump device 19, all of the washing liquid and / or fresh water F flows back into the pump basin 16. One effect is an improved cleaning result. This leads, inter alia, to fewer spots on the cleaning object G to be cleaned. Complete venting can be achieved without any additional measures. The dissipation or cooling of the drive motor 42 can be achieved by the contact of the stator 50 with the diffusion chamber 92. Here, only the second containment section 48 defining the diffusion chamber 92 is arranged between the stator 50 and the diffusion chamber 92. For the pump device 19, a very compact construction is derived and thus a corresponding construction space advantage is derived.

[0156] In summary, viewed from bottom to top along the central axis 20, at successive height positions, the functional sections serving as the liquid delivery channel 121 of the pump assembly 19 include: a pump inlet 39; a pump chamber or impeller chamber 119 with an impeller or runner 41 rotatably driven therefor to deliver the cleaning fluid F; a pressure chamber and / or diffusion chamber 92 arranged downstream of the pump chamber 119; a water distribution element 57 rotatable about the central axis 20 in the upper section of the pressure chamber and / or diffusion chamber 92; and multiple fluid outlets of the pump assembly 19 such as 51, 52, 53, and 54. Here, the liquid delivery channel is understood as a cavity provided in the housing 35 of the pump assembly 19, which is filled and flows through by the cleaning fluid F during the delivery operation of the pump assembly 19. The cleaning fluid F is guided upward against gravity g within the housing 35 through the successive sequence of different functional sections of the liquid delivery channel 121 of the pump unit, from the pump inlet 39 to the corresponding fluid outlets such as A51, A52, A53, A54. This largely avoids deflection and / or reflection of the delivered cleaning fluid F with a directional component in the direction of gravity g, that is, in the opposite direction to its upward delivery direction. Therefore, the reverse upward flow of the cleaning fluid F delivered by the running wheel 41 is largely avoided along its path through the liquid delivery channel 121. Furthermore, the successive arrangement of the various functional sections of the liquid delivery channel 121 facilitates a simple structure of the pump unit 19 and consequently, simple manufacturing. In turn, the pump unit can be easily disassembled and every important component of the pump unit can be accessed, for example, during maintenance. Furthermore, this sequence of different functional sections of the liquid delivery channel 121 ensures that when the drive motor 42 for the impeller 41 is turned off and the impeller 41 stops, the cleaning fluid F can flow completely downwards from the liquid delivery channel through the pump inlet 39 by gravity alone. To allow the liquid delivery channel 121 to idle as completely as possible, it is particularly advantageous that the pump inlet 39 is suitably located at the lowest point of the pump assembly 19. This avoids the retention of residual water in the liquid delivery channel 121 of the housing 35 of the pump assembly 19 when the drive motor 42 for the impeller 41 of the pump assembly is not running. Thus, when the cleaning tank changes from a sub-cleaning process, such as a cleaning process, to a subsequent sub-cleaning process, such as the cleaning process of a dishwashing procedure to be performed, there is almost no or no so-called wastewater residue and / or alkali residue. This is because now, when the cleaning tank is changed, the cleaning fluid for the corresponding sub-cleaning process can at least almost completely flow out of the pump assembly 19 and be removed from the hydraulic circuit, especially by means of (in Figure 2 , 3The (not shown) emptying pump pumps the pump basin 16 out of the removal and supplies new cleaning liquid, in particular fresh water, to the hydraulic circuit 33 for the next sub-cleaning process, which fresh water cannot mix with the dead or residual water from the previous sub-cleaning process. There are thus fewer or no more spots on the finally cleaned and subsequently dried washing goods G caused by dirt particles, limestone particles, etc., that is to say, this leads to an improved cleaning result. In particular, the intermediate cleaning process, which has hitherto been provided between the cleaning process and the final cleaning process, can now be carried out with a smaller amount of fresh water if necessary or even be completely dispensed with, since it is no longer mandatory to flush out the residual water or dead water mixed with dirt particles and / or cleaning agent from the pump device 19.

[0157] Figure 13 A schematic top view of an embodiment of a blank 111 for manufacturing the stator 50 of the drive motor 42 and the stator 80 of the water dispensing drive 76 is shown. Figure 14 A component 112 is shown, comprising a first stator sheet 113 assigned to the stator 50 and a second stator sheet 114 assigned to the stator 80.

[0158] The component 112 is made from the blank 111. The blank 111 can be circular. However, in principle, the blank 111 can have any arbitrary geometry. The component 112 can be manufactured from the blank 111 by means of a punching method. In manufacturing the component 112, the first stator sheet 113 and the second stator sheet 114 are manufactured at the same time. The stator 50 is made from a set of first stator sheets 113. Correspondingly, the stator 80 is made from a set of second stator sheets 114.

[0159] The first stator sheet 113 has a surrounding ring section 115 from which a plurality of root sections 116 extend inwardly. At the root sections 116, the first stator sheet 113 has an inner diameter di. The second stator sheet 114 likewise has a surrounding ring section 117 from which a plurality of root sections 118 extend inwardly. The ring section 117 has an outer diameter da which is smaller than the inner diameter di, so that the second stator sheet 114 can be arranged within the first stator sheet 113.

[0160] It is thus possible to manufacture the stator 50 of the drive motor 42 and the stator 80 of the water dispensing drive 76 from the same blank 111. The stator 80 of the water dispensing drive 76 is thus dimensioned such that the stator 80 has a size which is smaller than or equal to the stator section at the center of the stator 50 of the drive motor 42 and which then forms the stator 80 of the water dispensing drive 76. The stator 50 of the drive motor 42 and the stator 80 of the water dispensing drive 76 can thus be manufactured in one process step.

[0161] Because the pump unit 19 and the water distribution drive 76 are always required in pairs for manufacturing the household dishwasher 1, this leads to simplified manufacturing and also reduces costs. This can be similarly applied to the combined stator 50 of the drive motor 42 and the stator of the lye pump.

[0162] Therefore, the stamping waste generated during the manufacture of the stator 50 of the drive motor 42 can be used to manufacture the stator of another motor (in this case, the water distribution drive 76), resulting in material savings. Two stator stamping assemblies can be manufactured simultaneously in a single process step, leading to manufacturing cost savings. Only one stamping packaging tool is required, thereby reducing investment costs. This advantageously results in resource conservation in terms of material consumption.

[0163] Figure 15 A schematic cross-sectional view of the pump assembly 19 relative to... Figure 3 The implementation method is a variation of the previous one. (And) Figure 3 The difference lies here. Figure 15 The housing 35 of the pump assembly 19 has a one-piece outer housing component 367, which defines, in particular, a liquid delivery channel 121 that is at least nearly rotationally symmetrical with respect to the central axis 20, except for fluid outlets such as 51-54. Now, instead of the tubular heating element 40, at least one tubular heating element RH is disposed in the liquid delivery channel 121. This further simplifies the structure or construction of the pump assembly according to the invention. It may be sufficient if the housing 35 of the pump assembly 19 consists of only two parts (the outer housing component 367 and the inner housing component 38). In any case, a cover DE can also be provided, which can close the upper opening of the inner housing component 38. This cover DE... Figure 15 For the sake of simplicity, only dashed lines are used. This reliably protects the stator 50, housed within the housing interior 38 between its first and second receiving sections 45 and 48, from moisture and / or cleaning fluid. The housing exterior 367 and the housing interior 38, which is fitted into or embedded within the housing exterior, can be mechanically connected to each other, for example, by snap-fit ​​connections, locking connections, and / or bayonet connections and / or other couplings. Improved heat transfer between the tubular heating element RH and the cleaning fluid F, which is conveyed upwards through the liquid delivery channel 121 via the impeller or pump wheel 41 of the pump assembly 19, is further achieved by placing at least one tubular heating element RH in the liquid delivery channel 121 formed between the housing interior 38 and the housing exterior 367.

[0164] Specifically, the second receiving section 48 forms at least one subsection of the inner boundary wall of the liquid transport channel 121.

[0165] The tubular heating body RH is suitably arranged in the liquid conveying channel 121 along its flow path, viewed behind the impeller 41 of the pump device 19, in particular at least approximately rotationally symmetrical with respect to the central axis 20, preferably at least approximately concentrically with respect to the second accommodation section 48. Suitably, the tubular heating body is arranged with respect to the central axis or line of the liquid conveying channel 121, which is preferably configured as a circular cylindrical, line-symmetrically such that, viewed in each flow cross-sectional plane of the liquid conveying channel 121, at least approximately the same gap width is obtained for the cleaning liquid F flowing there between the tubular heating body RH and the delimiting wall of the interior of the liquid conveying channel 121 formed by the housing inner part 38 and between the tubular heating body RH and the delimiting wall of the exterior of the liquid conveying channel 121 formed by the housing outer part 367. The tubular heating body RH can thus be flowed through by the conveyed cleaning liquid F to a large extent uniformly, which facilitates the heat transfer from the tubular heating body to the cleaning liquid flowing through the tubular heating body.

[0166] It can be sufficient and / or advantageous in particular that the tubular heating body RH is arranged in the liquid conveying channel 121 and around the central axis 20 with only approximately one turn or one turn section, preferably encircling the second accommodation section 48 of the housing inner part 38. Thereby, impairments of the flow conditions due to the tubular heating body RH in the liquid conveying channel 121 can be minimized or avoided as far as possible. It can be particularly advantageous in this connection and / or in terms of construction technology that the turn or turn section of the tubular heating body RH is arranged at least approximately horizontally or in a plane orthogonal to the central axis 20. It is also possible, however, for example if a greater heat transfer to the cleaning liquid is required, that the tubular heating body RH can also encircle the central axis 20 in the liquid conveying channel 121 in more than one turn.

[0167] Although the application has been described by way of example, it is susceptible to various modifications and alternative forms.

[0168] List of reference signs

[0169] 1 domestic dishwasher

[0170] 2 washing container

[0171] 3 door

[0172] 4 washing space

[0173] 5 pivot axis

[0174] 6 filling opening

[0175] 7 bottom

[0176] 8 cover

[0177] 9 rear wall

[0178] 10 side wall

[0179] 11 Sidewalls

[0180] 12. Cleaning Item Receiving Section

[0181] 13. Cleaning Item Reservation Section

[0182] 14. Cleaning Item Reservoir

[0183] 15. Basic support

[0184] 16 Pump Pool

[0185] 17 Exports

[0186] 18 Screening System

[0187] 19 Pump Unit

[0188] 20 Central Axis

[0189] 21 pumps

[0190] 22 Suction Connector

[0191] 23 Water distributor

[0192] 24 Spraying Devices

[0193] 25 Spraying Devices

[0194] 26 Spraying Devices

[0195] 27. Axis of rotation

[0196] 28. Rotation axis

[0197] 29. Axis of rotation

[0198] 30 Input Pipelines

[0199] 31 Input Pipeline

[0200] 32 Input Pipeline

[0201] 33 Hydraulic Circuit

[0202] 34. Adjustment and control devices

[0203] 35 Housing

[0204] 36. Lower housing components

[0205] 37. Components on the housing

[0206] 38 Internal components of the housing

[0207] 39 Pump inlet

[0208] 40 Tubular heating elements

[0209] 41 impeller

[0210] 42 drive motor

[0211] 43 drive shaft

[0212] 44 rotor

[0213] 45 containment section

[0214] 46 containment space

[0215] 47 closure

[0216] 48 containment section

[0217] 49 containment space

[0218] 50 stator

[0219] 51 fluid outlet

[0220] 52 fluid outlet

[0221] 53 fluid outlet

[0222] 54 fluid outlet

[0223] 55 closure plate

[0224] 56 connection section

[0225] 57 water distribution tray

[0226] 58 circular ring tray

[0227] 59 drive ring

[0228] 60 through hole

[0229] 61 through hole

[0230] 62 through hole

[0231] 63 through hole

[0232] 64 guide section

[0233] 65 guide section

[0234] 66 guide section

[0235] 67 void

[0236] 68 void

[0237] 69 void

[0238] 70 base section

[0239] 71 tooth

[0240] 72 end side

[0241] 73 carrier element

[0242] 74 carrier element

[0243] 75 carrier element

[0244] 76 water dispensing drive

[0245] 77 housing part

[0246] 78 housing part

[0247] 79 interior space

[0248] 80 stator

[0249] 81 rotor

[0250] 82 drive shaft

[0251] 83 worm

[0252] 84 annular groove

[0253] 85 guide plate

[0254] 86 guide plate

[0255] 87 guide plate

[0256] 88 guide plate

[0257] 89 drain

[0258] 90 fluid space

[0259] 91 connecting section

[0260] 92 diffusion chamber

[0261] 93 transition section

[0262] 94 radius

[0263] 95 bevel

[0264] 96 radius

[0265] 97 radius

[0266] 98 radius

[0267] 99 radius

[0268] 100 sealing means

[0269] 101 accommodating section

[0270] 102 annular groove

[0271] 103 leg

[0272] 104 leg

[0273] 105 deflection section

[0274] 106 arrow

[0275] 107 abutment surface

[0276] 108 radius

[0277] 109 outer surface

[0278] 110 arrow

[0279] 111 blank

[0280] 112 component

[0281] 113 stator lamination

[0282] 114 stator lamination

[0283] 115 annular section

[0284] 116 root section

[0285] 117 annular section

[0286] 118 root section

[0287] 367 one-piece housing outer part

[0288] A extraction direction

[0289] AX axial direction

[0290] da outer diameter

[0291] DE cover

[0292] di inner diameter

[0293] E push-in direction

[0294] F washing liquid and / or fresh water

[0295] g gravitational direction

[0296] G cleaning object

[0297] R radial direction

[0298] RH tubular heating body

[0299] S flow direction

Claims

1. A household dishwasher (1) comprising a washing container (2) for holding laundry (G), a hydraulic circuit (33) for circulating detergent and / or fresh water (F) in the washing container (2), and a pump device (19) for applying the detergent and / or fresh water (F) to the hydraulic circuit (33), wherein, The pump assembly (19) has a central axis (20) oriented along the direction of gravity (g), wherein the pump assembly (19) has a water distributor (23) integrated in the housing (35) of the pump assembly (19) for selectively distributing the washing liquid and / or fresh water (F) to a plurality of fluid outlets (51, 52, 53, 54) of the pump assembly (19), and wherein all of the fluid outlets (51, 52, 53, 54) are oriented along the central axis (20).

2. The household dishwasher according to claim 1, characterized in that, The water distributor (23) has a water distribution plate (57) housed within the housing (35) and rotatable about the central axis (20), the water distribution plate being used to selectively open and close the fluid outlets (51, 52, 53, 54).

3. The household dishwasher according to claim 2, characterized in that, The water distribution plate (57) has an annular disk (58) and a drive ring (59) for driving the annular disk (58), wherein the drive ring (59) is shaped to fit the annular disk (58).

4. The household dishwasher according to claim 3, characterized in that, The drive ring (59) is housed in an annular groove (84) provided in the housing (35).

5. The household dishwasher according to claim 4, characterized in that, The housing (35) has a drain outlet (89) facing the central axis (20), and the drain outlet is fluidly connected to the annular groove (84).

6. The household dishwasher according to claim 4 or 5, characterized in that, The drive ring (59) is rotatably supported on guide plates (85, 86, 87, 88) that extend radially into the annular groove (84).

7. The household dishwasher according to any one of claims 3 to 6, characterized in that, The water distributor (23) has a water distribution driver (76) for driving the drive ring (59), wherein the drive shaft (82) of the water distribution driver (76) is oriented perpendicular to the central axis (20).

8. The household dishwasher according to any one of claims 2 to 7, characterized in that, The pump assembly (19) has a drive motor (42) having a rotor (44) for driving an impeller (41) of the pump assembly (19) and a stator (50), wherein the rotor (44) is housed in a first housing section (45) of the housing (35) and wherein the stator (50) is housed in a second housing section (48) of the housing (35).

9. The household dishwasher according to claim 8, characterized in that, The first accommodating section (45) is arranged within the second accommodating section (48).

10. The household dishwasher according to claim 8 or 9, characterized in that, The second receiving section (48) is guided through the water distribution plate (57).

11. The household dishwasher according to any one of claims 8 to 10, characterized in that, A diffusion chamber (92) is constructed in the housing (35), which, when viewed along the radial direction (R) of the pump assembly (19), is defined by the second receiving section (48) and a tubular heating element (40) surrounding the second receiving section (48).

12. The household dishwasher according to claim 11, characterized in that, The housing (35) has a lower housing component (36) and an upper housing component (37), wherein, when viewed along the central axis (20), the tubular heating element (40) is arranged between the lower housing component (36) and the upper housing component (37).

13. The household dishwasher according to at least one of claims 1 to 10, characterized in that, A liquid delivery channel (121), particularly a diffusion chamber (92), is constructed in the housing (35). When viewed along the radial direction (R) of the pump assembly (19), the liquid delivery channel is defined by the second receiving section (48) and the housing outer component (367) surrounding the second receiving section (48). At least one tubular heating element (RH) is disposed in the liquid delivery channel (121), particularly the diffusion chamber (92).

14. The household dishwasher according to at least one of claims 11 to 13, characterized in that, The diffusion chamber (92) widens from the pump inlet (39) of the pump device (19) in the direction toward the water distributor (23).

15. The household dishwasher according to claim 14, characterized in that, The pump inlet (39) is constructed rotationally symmetrically with respect to the central axis (20) and the pump inlet is oriented along the central axis (20).

16. The household dishwasher according to any one of claims 8 to 15, characterized in that, The housing (35) has an integral housing internal component (38), on which the fluid outlet (51, 52, 53, 54), the first receiving section (45), and the second receiving section (48) are integrally formed.

17. A pump device (19) for a household appliance for guiding water, said pump device being particularly useful for a household dishwasher according to at least one of the preceding claims, wherein, The pump assembly has a central axis (20) oriented along the direction of gravity (g), wherein the pump assembly has a water distributor (23) integrated in the housing (35) of the pump assembly (19), the water distributor being used to selectively distribute water (F) to a plurality of fluid outlets (51, 52, 53, 54) of the pump assembly (19), and wherein all of the fluid outlets (51, 52, 53, 54) are oriented along the central axis (20).

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