Domestic dishwasher with a pump device and pump device for a water-carrying domestic appliance

Abstract

A household dishwasher includes a dishwasher cavity for receiving an item to be washed, a hydraulic circuit designed to circulate washing liquor and / or fresh water in the dishwasher cavity, and a pump device designed to apply the washing liquor and / or the fresh water to the hydraulic circuit and having a center axis which is oriented in a direction of gravity. The pump device includes a housing, a plurality of fluid outlets, and a water deflector which is integrated into the housing for selectively distributing the washing liquor and / or the fresh water to the plurality of fluid outlets. The water deflector includes a water deflector disk which is rotatably mounted around the center axis and which comprises a central through-hole through which a part of the housing is guided.

Description

[0001] The present invention relates to a household dishwasher.

[0002] A dishwasher comprises a dishwasher cavity in which items to be washed can be received. Spray zones can be provided in the dishwasher cavity for applying washing liquor and / or fresh water to the items to be washed. The spray zones can be configured, for example, as spray arms which are rotatably mounted in or on the dishwasher cavity. In order to apply washing liquor and / or fresh water to the spray zones, the dishwasher has a circulation pump. A distribution of the washing liquor and / or the fresh water onto the spray zones takes place by means of a so-called water deflector. The aforementioned circulation pump suctions the washing liquor and / or the fresh water from a pump sump of the dishwasher, wherein a motor shaft with an impeller wheel of the circulation pump is generally horizontally arranged and conveys the washing liquor and / or the fresh water into the water deflector or directly to the spray zones via a pump housing, into which a heater can also be integrated.

[0003] Against this background, an object of the present invention is to provide an improved household dishwasher.

[0004] Accordingly, a household dishwasher is proposed, comprising a dishwasher cavity for receiving items to be washed, a hydraulic circuit for circulating washing liquor and / or fresh water in the dishwasher cavity and a pump device for applying the washing liquor and / or the fresh water to the hydraulic circuit. The pump device has a center axis which is oriented in a direction of gravity, wherein the pump device comprises a water deflector, integrated into a housing of the pump device, for selectively distributing the washing liquor and / or the fresh water to a plurality of fluid outlets of the pump device, wherein the water deflector comprises a water deflector disk which is rotatably mounted around the center axis, and wherein the water deflector disk comprises a central through-hole through which a part of the housing is guided.

[0005] As the housing of the pump device is partially guided through the through-hole of the water deflector disk, when viewed along the center axis, a particularly compact design of the pump device can be achieved. This results in a reduced constructional space requirement for the pump device.

[0006] The dishwasher cavity is preferably cuboidal. The dishwasher cavity can be closed by means of a door which is pivotably attached to the dishwasher cavity. A plurality of receptacles for items to be washed, for example a lower basket, an upper basket and a cutlery drawer, can be provided in the dishwasher cavity. The items to be washed can be received in the receptacles for items to be washed, washing liquor and / or fresh water being applied thereto by means of the hydraulic circuit. “Apply” in the present case can encompass spraying or wetting the items to be washed. “Washing liquor” is to be understood to mean in the present case water provided with a detergent and / or dirt particles released from the items to be washed.

[0007] The hydraulic circuit can have a plurality of spray facilities, for example in the form of spray arms and / or intensive spray zones, which are arranged inside the dishwasher cavity. The spray facilities can be rotatably mounted in the dishwasher cavity. The spray facilities are connected by means of supply lines to the fluid outlets of the pump device. The pump device can be part of the hydraulic circuit. However, this is not absolutely necessary.

[0008] The pump device “applying” washing liquor and / or fresh water to the hydraulic circuit means in the present case, in particular, that the pump device pumps the washing liquor and / or the fresh water through the hydraulic circuit. The pump device is, in particular, a circulation pump, preferably a heat pump. The pump device can thus also be denoted as a circulation pump or as a heat pump. Particularly preferably, the pump device is a compact heat pump and can thus also be denoted as such.

[0009] The pump device is designed to circulate washing liquor and / or fresh water in the dishwasher cavity or in the hydraulic circuit. Moreover, the pump device can also be designed to introduce heat into the washing liquor and / or the fresh water. The pump device can be fastened to a pump sump of the household dishwasher. The pump device can be positioned entirely or at least partially below the pump sump.

[0010] The pump device is preferably constructed substantially rotationally symmetrically to its center axis. “Substantially” means that parts of the pump device are constructed rotationally symmetrically to the center axis, wherein it should not be excluded that further parts of the pump device are not constructed rotationally symmetrically to the center axis. The center axis is oriented, in particular, parallel to the direction of gravity.

[0011] The center axis being “oriented” in the direction of gravity or parallel to the direction of gravity can mean in the present case, in particular, that the center axis is inclined or tilted 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°, relative to the direction of gravity. The center axis, however, can also run exactly in the direction of gravity so that this does not result in any tilting or inclination relative to the direction of gravity. Depending on the installation situation, an appropriate slight tilting or inclination can be selected.

[0012] The housing of the pump device is preferably in multiple parts. 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 plastic components, in particular plastic injection-molded components. As a result, the pump device can be produced cost-effectively. The housing lower part, the housing upper part and / or the housing inner part can be positively connected to one another. A positive connection is produced by two components engaging in one another or behind one another. Latching hooks, snap hooks or the like, can be provided for producing the positive connection.

[0013] The water deflector being “integrated” into the housing means in the present case, in particular, that the water deflector is placed at least in some portions inside the housing. However, it is possible that the housing is at least in some portions part of the water deflector. For example, the above-mentioned housing inner part and the housing upper part are at least in some portions part of the water deflector. The water deflector is thus not spatially separated from the pump device.

[0014] It is possible to distribute the washing liquor and / or the fresh water to the different fluid outlets by means of the water deflector. Selected fluid outlets can be blocked or opened thereby. The water deflector disk, which is rotatably mounted in the housing, is provided to this end. As mentioned above, the fluid outlets are fluidically connected to the spray facilities. Thus it is possible to apply washing liquor and / or fresh water to individual spray facilities in a targeted manner by means of the water deflector. It is also possible to apply washing liquor and / or fresh water to all of the spray facilities at the same time.

[0015] The water deflector disk is preferably ring-shaped, wherein the central through-hole is, in particular, circular. For example, a part of the housing inner part is guided through this central through-hole. The water deflector disk can thus be rotatably mounted on its through-hole on the housing, in particular on the housing inner part.

[0016] According to one embodiment, the water deflector disk has an annular disk and a drive ring for driving the annular disk, wherein the drive ring is positively connected to the annular disk.

[0017] The water deflector disk is preferably ring-shaped and comprises a plurality of through-holes, individual or all of the fluid outlets being able to be opened in a targeted manner thereby. For blocking or closing individual or all of the fluid outlets, the water deflector disk is rotated such that it covers the corresponding fluid outlet(s). The water deflector disk accordingly is in two parts and comprises the annular disk and the drive ring.

[0018] According to a further embodiment, the annular disk has through-holes for selectively opening individual, a plurality of, or all of the fluid outlets.

[0019] The above-mentioned through-holes of the water deflector disk are accordingly provided on the annular disk. The through-holes can be circular. The through-holes, however, can also have a slotted geometry. The number of through-holes is arbitrary. In particular, the number of through-holes corresponds to the number of fluid outlets.

[0020] According to a further embodiment, the annular disk has cutouts, wherein the drive ring has driver elements corresponding to the cutouts, and wherein the driver elements engage positively in the cutouts.

[0021] The number of cutouts and the number of driver elements is arbitrary. Particularly preferably, in each case three cutouts and in each case three driver elements are provided. The number of cutouts preferably corresponds to the number of driver elements. The cutouts are provided, in particular, on an outer circumference of the annular disk. The cutouts can be rectangular. A torque can be transferred from the drive ring to the annular disk by means of the driver elements and the cutouts.

[0022] According to a further embodiment, the cutouts and the driver elements are arranged so as to be unevenly distributed around the center axis. Alternatively, at least one of the cutouts and at least one of the driver elements has a width which is different from the other cutouts and the other driver elements.

[0023] As a result, an encoding which prevents an incorrect assembly of the water deflector disk (poka-yoke) is implemented when assembling the annular disk and the drive ring. Alternatively, the cutouts and the driver elements can also be arranged so as to be evenly distributed around the center axis. In this case, the encoding can be achieved by the at least one of the cutouts and the at least one of the driver elements having a different width from the other cutouts and the other driver elements. For example, the at least one cutout and the at least one driver element are wider than the remaining cutouts and the remaining driver elements.

[0024] According to a further embodiment, during the operation of the pump device, the annular disk is designed to float on the washing liquor and / or the fresh water, wherein the positive connection between the annular disk and the drive ring is designed such that the positive connection between the annular disk and the drive ring continues to be maintained when the annular disk is floating.

[0025] Due to the floating of the annular disk, it can be pushed on the inside against a cover plate of the housing inner part in order to seal in a reliable manner fluid outlets which are intended to be closed. In particular, when the annular disk is floating, it is lifted away from a front face of the drive ring so that an intermediate space filled with washing liquor and / or fresh water is produced between the front face and the annular disk. This intermediate space is bridged, in particular, by the driver elements so that even when the annular disk is floating, a torque can be transferred thereto.

[0026] According to a further embodiment, the drive ring has on the outside a toothing circulating at least in some portions around the center axis.

[0027] The drive ring or the water deflector disk is thus not driven centrally but on the outside or circumferentially. The toothing can be a helical toothing. The toothing can, in particular, be a globoid toothing. The toothing can circulate fully around the center axis. However, this is not absolutely necessary. It is also possible for only a partial toothing to be provided.

[0028] According to a further embodiment, the water deflector has a water deflector drive for driving the drive ring, wherein a drive shaft of the water deflector drive is oriented perpendicularly to the center axis.

[0029] “Perpendicularly” is understood to mean in the present case an angle of 90°±10°, preferably of 90°±5°, further preferably of 90°±3°, further preferably of 90°±1°, further preferably of exactly 90°. The water deflector drive is an electric motor. The water deflector drive is preferably a so-called wet rotor. The water deflector drive preferably comprises a first housing part which is integrally formed on the housing upper part of the housing of the pump device. A second housing part is positively connected, in particular latched or snapped, to the first housing part, wherein the second housing part closes the first housing part. The housing parts enclose an interior which, during the operation of the pump, is filled with washing liquor and / or fresh water. The water deflector drive also comprises a stator which is attached on the outside to the second housing part, and a rotatable rotor which is arranged inside the interior. The rotor is connected in a fixed manner in terms of rotation to the drive shaft which in turn is rotatably mounted on the two housing parts.

[0030] According to a further embodiment, the water deflector drive has a worm which is attached to the drive shaft and which engages in the toothing.

[0031] The toothing and the worm preferably have a globoid toothing. The use of a worm drive for driving the water deflector disk causes the worm to remove dirt from the toothing of the drive ring. This achieves a greater operational reliability.

[0032] According to a further embodiment, the drive ring is received in an annular groove provided in the housing.

[0033] Preferably, the annular groove is integrally formed on 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 circulates fully around the center axis of the pump device.

[0034] According to a further embodiment, the housing has a drainage opening which faces in the direction of the center axis and which is fluidically connected to the annular groove.

[0035] Exactly one drainage opening can be provided. However, a plurality of drainage openings can also be provided. Washing liquor and / or fresh water can drain out of the annular groove by means of the drainage opening. The drainage opening being “fluidically connected” to the annular groove means in the present case, in particular, that the washing liquor and / or the fresh water can flow out of the annular groove through the drainage groove in the direction of the center axis.

[0036] According to a further embodiment, the drive ring is rotatably mounted on guide webs protruding radially into the annular groove.

[0037] As a result, a reduced friction can be produced during the rotation of the drive ring. The number of guide webs is arbitrary. Preferably, however, at least three guide webs are provided. However, four guide webs or more than four guide webs can also be provided. The guide webs protrude into the annular groove, when viewed in the radial direction.

[0038] According to a further embodiment, all of the fluid outlets are oriented along the center axis.

[0039] The fluid outlets are preferably tubular. The fluid outlets can be part of the water deflector. The fluid outlets can have a circular or an oval or elliptical cross section. The fluid outlets being “oriented” along the center axis means in the present case, in particular, that the fluid outlets extend out of the housing along the center axis or in an axial direction of the pump device. The axial direction is oriented parallel to the center axis or coincides therewith. A radial direction of the pump device, however, is arranged, in particular, perpendicularly to the center axis or perpendicularly to the axial direction. Preferably, the pump device has no fluid outlets which are oriented perpendicularly to the center axis and thus in the radial direction. The entirety or all of the fluid outlets of the pump device run along the center axis or in the axial direction.

[0040] According to a further embodiment, the pump device has a drive motor with a rotor for driving an impeller wheel of the pump device and a stator, wherein the rotor is received in a first receiving portion of the housing, wherein the stator is received in a second receiving portion of the housing, and wherein the second receiving portion is guided through the through-hole.

[0041] Preferably, the first receiving portion and the second receiving portion are part of the housing inner part. The first receiving portion is pot-shaped and closed in the direction of the impeller wheel by means of a closure. The first receiving portion encloses a receiving space in which the rotor is received. The rotor is connected in a fixed manner in terms of rotation to a drive shaft of the drive motor. Furthermore, the impeller wheel is connected in a fixed manner in terms of rotation to the drive shaft. The drive shaft is rotatably mounted on the first receiving portion and on the closure. The second receiving portion is preferably also pot-shaped. The first receiving portion and the second receiving portion are arranged in opposing directions so that the second receiving portion is open, facing away from the impeller wheel. The second receiving portion encloses an annular receiving space in which the stator of the drive motor is received. The stator can be adhesively bonded to the first receiving portion and / or to the second receiving portion, for example.

[0042] According to a further embodiment, the annular disk is mounted on the inside on the through-hole by means of guide portions integrally formed on the housing.

[0043] The number of guide portions is arbitrary. Particularly preferably, however, three guide portions which can be arranged so as to be evenly distributed around the center axis are provided. The guide portions are, in particular, part of the inner housing. Washing liquor and / or fresh water can flow between the guide portions from the water deflector disk radially inwardly in the direction of the center axis. Instead of guide portions spaced apart from one another, however, a continuous ring-shaped guide portion can be provided.

[0044] According to an advantageous development of the invention, the housing of the pump device according to the invention has a liquid conveying channel in its interior. When viewed from bottom to top along the center axis, a pump inlet, a pump chamber or impeller wheel chamber with an impeller wheel or impeller which can be rotatably driven therein for conveying the washing liquid, a pressure and / or diffuser chamber arranged downstream of the pump chamber, a water deflector element which is rotatable around the center axis in the upper end portion of the pressure and / or diffuser chamber and the plurality of fluid outlets of the pump device, are provided at successive height levels as functional sections of the liquid conveying channel of the pump device according to the invention. “Liquid conveying channel” is understood to mean the hollow space which is provided in the housing of the pump device according to the invention and which is filled and flowed through by the washing liquid in the conveying mode of the pump device. Due to this vertical sequence of the different functional sections of the liquid conveying channel of the pump device according to the invention, when viewed from the pump inlet to the outlet opening of the respective fluid outlet, the washing liquid is guided in the housing rising upwardly from bottom to top counter to the direction of gravity. Deflections and / or reflections of the washing liquid with a directional component in the direction of gravity, i.e. in the direction opposing its conveying direction facing from bottom to top are substantially avoided. A retrograde flow of the washing liquid conveyed by the impeller wheel is thus substantially avoided on the path thereof through the liquid conveying channel from bottom to top. In addition, the successive arrangement of the different functional sections of the liquid conveying channel is advantageous for a simple design and, associated therewith, a simple production of the pump device according to the invention. Conversely, for example in the case of repair, this pump device can be easily dismantled and each essential component of the pump device according to the invention made accessible. Moreover, due to this sequence of the different functional sections of the liquid conveying channel it is ensured that the washing liquid can drain completely out of this liquid conveying channel downwardly via the pump inlet solely by the effect of gravity when the drive motor for the impeller wheel is switched off and the impeller wheel is stationary. For the liquid conveying channel to be completely drained it is advantageous, in particular, if the pump inlet is expediently provided at the lowest point of the pump device according to the invention. This avoids residual water remaining in the liquid conveying channel of the housing of the pump device according to the invention when the drive motor of the impeller wheel thereof is out of operation. As a result, it can lead to little or no so-called carryover of dirty water and / or washing solution when changing the washing bath from a partial wash cycle, such as for example the cleaning cycle, to the following partial wash cycle, such as for example the intermediate wash cycle or rinse-aid cycle of the wash cycle of a dishwashing program to be carried out. This is because when changing the washing bath, the washing liquid used for the respective partial wash cycle can now drain at least virtually completely out of the pump device according to the invention and be removed from the hydraulic circuit, in particular by pumping out the pump sump using a drain pump, and new washing liquid, in particular fresh water, can be supplied to the hydraulic circuit for the next partial wash cycle without it being able to be mixed with stagnant or residual water from the previous partial wash cycle. As a result, marks due to dirt particles, limescale particles, etc. can be reduced or can be no longer present on the items to be washed which are rinsed with rinse-aid and then dried, i.e. this leads to an improved washing result. In particular, the intermediate wash cycle, previously provided between the cleaning cycle and the rinse-aid cycle, can optionally be carried out with a smaller quantity of fresh water or even be entirely dispensed with, since it is now no longer absolutely necessary to flush out residual or stagnant water containing dirt particles and / or detergent from the pump device.

[0045] According to an alternative development of the invention, a liquid conveying channel, in particular diffuser chamber, can be configured in the housing of the pump device, which liquid conveying channel, when viewed in a radial direction of the pump device, is defined by the second receiving portion and a housing outer part circulating around the second receiving portion, wherein at least one tubular heating body is accommodated in this liquid conveying channel.

[0046] According to an alternative development of the invention, the housing can have, in particular, an integral or one-piece housing outer part which outwardly defines the liquid conveying channel, which is at least virtually rotationally symmetrical relative to the center axis, in particular up to the fluid outlets, wherein at least one tubular heating body is accommodated in the liquid conveying channel. As a result, the design or the construction of the pump device according to the invention can be further simplified. It can already be sufficient if the housing of the pump device is composed of merely two parts-the housing outer part and the housing inner part. However, it is also possible to provide a cover part by which the upper opening of the housing inner part can be closed. As a result, the stator accommodated in the housing inner part between the first receiving portion and the second receiving portion thereof can be reliably protected against moisture and / or washing liquid. The housing outer part and the housing inner part incorporated or immersed therein can be mechanically connected together, for example, by a snap connection, latching connection and / or bayonet connection and / or other coupling. As at least one tubular heating body is accommodated in the liquid conveying channel formed between the housing inner part and the housing outer part, an improved heat transfer is also produced between the tubular heating body and the washing liquid conveyed from bottom to top through the liquid conveying channel by means of the impeller wheel or pump wheel of the pump device.

[0047] In particular, the second receiving portion forms at least one sub-portion of the inner defining wall of the liquid conveying channel.

[0048] The tubular heating body is provided in the liquid conveying channel, when viewed along the flow path thereof, expediently downstream of the impeller wheel of the pump device, in particular arranged at least virtually rotationally symmetrically to the center axis, preferably arranged at least virtually concentrically to the second receiving portion. Expediently the tubular heating body is arranged symmetrically relative to the center axis or central axis of the liquid conveying channel which is preferably configured in a circular-cylindrical manner such that, when viewed in the respective passage cross-sectional plane of the liquid conveying channel, at least approximately the same gap width results between the tubular heating body and the inner defining wall of the liquid conveying channel formed by the housing inner part, and between the tubular heating body and the outer defining wall of the liquid conveying channel formed by the housing outer part for the washing liquid flowing through therein. Thus the conveyed washing liquid can flow substantially evenly through the tubular heating body, which is advantageous for the transfer of heat from the tubular heating body to the washing liquid flowing past said tubular heating body.

[0049] In particular, it can be sufficient and / or advantageous if the tubular heating body is accommodated with approximately only one winding or one winding sub-portion in the liquid conveying channel and circulates around the center axis, preferably encircles the second receiving portion of the housing inner part. As a result, impairments to the flow conditions due to the tubular heating body in the liquid conveying channel can be minimized or substantially avoided. In this regard and / or also in terms of technical design, it can be advantageous, in particular, if the winding or the winding sub-portion of the tubular heating body is arranged at least approximately horizontally or in a plane at right-angles to the center axis. However, it is also possible that the tubular heating body circulates around the center axis with more than one winding in the liquid conveying channel, for example if a greater heat transfer to the washing liquid is required.

[0050] Moreover, the invention can also relate to a pump device per se conveying water for a water-conducting household appliance according to claim 16, in particular for a household dishwasher set forth above and / or configured according to claims 1 to 15. Such a pump device according to the invention can be implemented, in particular, in washing machines, washer-dryers or other water-conducting household appliances. The pump device can be designed, in particular, as above and / or can be configured according to claims 1 to 15.

[0051] Further possible implementations of the household dishwasher also encompass not explicitly mentioned combinations of features or embodiments described above or below relative to the exemplary embodiments. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the household dishwasher.

[0052] Further advantageous embodiments and aspects of the household dishwasher form the subject matter of the dependent claims and the exemplary embodiments of the household dishwasher described below. The household dishwasher is explained in more detail below on the basis of preferred embodiments with reference to the accompanying figures.

[0053] FIG. 1 shows a schematic perspective view of an embodiment of a household dishwasher;

[0054] FIG. 2 shows a schematic sectional view of the household dishwasher according to FIG. 1;

[0055] FIG. 3 shows a schematic sectional view of an embodiment of a pump device for the household dishwasher according to FIG. 1;

[0056] FIG. 4 shows a schematic plan view of the pump device according to FIG. 3;

[0057] FIG. 5 shows a schematic plan view of an embodiment of a water deflector disk for the pump device according to FIG. 3;

[0058] FIG. 6 shows a schematic sectional view of the water deflector disk according to FIG. 5;

[0059] FIG. 7 shows a schematic perspective exploded view of the water deflector disk according to FIG. 5;

[0060] FIG. 8 shows a schematic perspective view of an embodiment of a drive ring for the water deflector disk according to FIG. 5;

[0061] FIG. 9 shows a schematic sectional view of an embodiment of a water deflector for the pump device according to FIG. 3;

[0062] FIG. 10 shows a schematic sectional view of an embodiment of a fluid outlet for the pump device according to FIG. 3;

[0063] FIG. 11 shows a schematic plan view of an embodiment of a sealing facility for the pump device according to FIG. 3;

[0064] FIG. 12 shows a schematic sectional view of the sealing facility according to FIG. 11;

[0065] FIG. 13 shows a schematic plan view of an embodiment of a blank for producing a stator of a drive motor and a stator of a water deflector drive for the pump device according to FIG. 3;

[0066] FIG. 14 shows an embodiment of an arrangement of the blank according to FIG. 13; and

[0067] FIG. 15 shows a schematic sectional view of a variant of a pump device modified relative to the advantageous embodiment of FIG. 3 in the hydraulic circuit of the household dishwasher according to FIGS. 1 and 2.

[0068] Elements which are the same or functionally the same have been provided with the same reference signs in the figures, unless specified otherwise.

[0069] FIG. 1 shows a schematic perspective view of an embodiment of a household dishwasher 1. The household dishwasher 1 comprises a dishwasher cavity 2 which is able to be closed by a door 3, in particular in a water-tight manner. To this end, a sealing facility can be provided between the door 3 and the dishwasher cavity 2. The dishwasher cavity 2 is preferably cuboidal. The dishwasher cavity 2 can be arranged in a housing of the household dishwasher 1. The dishwasher cavity 2 and the door 3 can form a dishwasher interior 4 for washing items to be washed.

[0070] The door 3 is shown in FIG. 1 in its open position. The door 3 can be closed or opened by pivoting about a pivot axis 5 provided at a lower end of the door 3. A loading opening 6 of the dishwasher cavity 2 can be closed or opened by means of the door 3. The dishwasher cavity 2 has a bottom 7, a ceiling 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 ceiling 8, the rear wall 9 and the side walls 10, 11 can be produced, for example, from a stainless steel sheet. Alternatively, for example, the bottom 7 can be produced from a plastic material.

[0071] The household dishwasher 1 also has at least one receptacle for items to be washed 12 to 14. Preferably, a plurality, for example three, receptacles for items to be washed 12 to 14 can be provided, wherein the receptacle for items to be washed 12 can be a lower receptacle for items to be washed or a lower basket, the receptacle for items to be washed 13 can be an upper receptacle for items to be washed or an upper basket and the receptacle for items to be washed 14 can be a cutlery drawer. As FIG. 1 also shows, the receptacles for items to be washed 12 to 14 are arranged one above the other in the dishwasher cavity 2. Each receptacle for items to be washed 12 to 14 is selectively movable into or out of the dishwasher cavity 2. In particular, each receptacle for items to be washed 12 to 14 can be pushed into or moved into the dishwasher cavity 2 in a push-in direction E and pulled out or moved out of the dishwasher cavity 2 counter to the push-in direction E in a pull-out direction A.

[0072] FIG. 2 shows a highly schematic sectional view of the household dishwasher 1. In addition to the dishwasher cavity 2, the household dishwasher 1 comprises a base support 15 which bears the dishwasher cavity 2. The base support 15, for example, is a plastic component, in particular a plastic injection-molded component.

[0073] A pump sump 16 is provided on the bottom 7. The pump sump 16 is pot-shaped and extends in the orientation of FIG. 2 downwardly from the bottom 7. The pump sump 16 can be a plastic component, in particular a plastic injection-molded component. A tubular drain 17 leads out of the pump sump 16. The pump sump 16 is covered by means of a filter system 18. The filter system 18 can comprise a course filter and a fine filter.

[0074] A pump device 19 is connected to the drain 17. The pump device 19 is a circulation pump, in particular a heat pump, and thus can also be denoted as such. Particularly preferably, the pump device 19 is a compact heat pump and thus can also be denoted as such. The pump device 19 is designed to circulate washing liquor and / or fresh water F. The pump device 19 is also designed to introduce heat into the washing liquor and / or the fresh water F. The pump device 19 can be fastened to the pump sump 16. The pump device 19 is preferably arranged entirely or at least partially below the pump sump 16.

[0075] The pump device 19 is constructed substantially rotationally symmetrically to an axis of symmetry or center axis 20. The center axis 20 is oriented parallel to a direction of gravity g. The pump device 19 has a pump 21 which is fluidically connected to the drain 17 by means of a suction pipe 22 so that the pump device 19 can suction washing liquor and / or fresh water F from the pump sump 16 via the suction pipe 22 and the drain 17.

[0076] In addition to the pump 21, the pump device 19 has a water deflector 23 integrated into the pump device 19. By means of the water deflector 23, it is possible to distribute the washing liquor and / or fresh water F conveyed by the pump device 19 selectively to different spray facilities 24, 25, 26 provided in the dishwasher cavity 2. By means of the water deflector 23, washing liquor and / or fresh water F can be selectively applied or not to the spray facilities 24, 25, 26.

[0077] The spray facilities 24, 25 can be spray arms, whereas the spray facility 26 can be a ceiling gyro element. In addition, switchable intensive spray zones or a filter cleaning nozzle (not shown) can be provided. For example, the spray facility 24 is rotatably mounted below the receptacle for items to be washed 12 about an axis of rotation 27 on the bottom 7, on the pump sump 16 or on the pump device 19. The spray facility 24 has spray nozzles which spray the washing liquor and / or the fresh water F in the orientation of FIG. 2 upwardly into the receptacle for items to be washed 12.

[0078] The spray facility 25 can be rotatably mounted on the receptacle for items to be washed 13 about an axis of rotation 28. The spray facility 25 also has spray nozzles which are designed to spray the washing liquor and / or the fresh water F downwardly and / or upwardly in the orientation of FIG. 2. The spray facility 26 can be rotatably mounted on the ceiling 8 about an axis of rotation 29. The spray facility 26 applies washing liquor and / or fresh water F to the receptacle for items to be washed 14 from the top in the orientation of FIG. 2.

[0079] The spray facility 24 is fluidically connected by means of a supply line 30 to the pump device 19, in particular to the water deflector 23. The pump device 19 can apply washing liquor and / or fresh water F to the spray facility 24 via the supply line 30.

[0080] The spray facility 25 is assigned a supply line 31 which fluidically connects the spray facility 25 to the pump device 19. The pump device 19 can apply washing liquor and / or fresh water F to the spray facility 25 via the supply line 31.

[0081] The spray facility 26 is assigned a supply line 32 which fluidically connects the spray facility 26 to the pump device 19. The pump device 19 can apply washing liquor and / or fresh water F to the spray facility 26 via the supply line 32.

[0082] Each spray facility 24, 25, 26 can be assigned a dedicated supply line 30, 31, 32. Alternatively, all of the spray facilities 24, 25, 26 can have a common supply line which is branched. In particular, the supply lines 30, 31, 32 are formed by a common component, in particular by a common plastic injection-molded component. The supply lines 30, 31, 32 are guided along the rear wall 9 from the bottom 7 in the direction of the ceiling 8. The supply lines 30, 31, 32, or at least some of the supply lines 30, 31, 32, can be guided through the filter system 18.

[0083] The pump device 19 preferably has a separate connector or fluid outlet for each supply line 30, 31, 32. The pump device 19, the spray facilities 24, 25, 26 and the supply lines 30, 31, 32 form together a hydraulic circuit 33 of the household dishwasher 1. The pump device 19 circulates the washing liquor and / or the fresh water F in this hydraulic circuit 33. The pump device 19 can be part of the hydraulic circuit 33. However, this is not absolutely necessary.

[0084] The household dishwasher 1 also comprises a regulating and control facility 34. Different wash programs of the household dishwasher 1 can be carried out, for example, by means of the regulating and control facility 34. To this end, wash programs can be stored or saved in the regulating and control facility 34. The regulating and control facility 34 is preferably arranged outside the dishwasher cavity 2.

[0085] The regulating and control facility 34 can be arranged in or on the door 3. Preferably, the regulating and control facility 34 is provided on an upper edge of the door 3 (not shown). The regulating and control facility 34, however, can also be received in the base support 15. The regulating and control facility 34 can be operated or actuated by means of operating elements, not shown. The operating elements can comprise, for example, buttons, knobs and / or touchscreens. These operating elements can be attached to the door 3.

[0086] The pump device 19 can be activated by means of the regulating and control facility 34. For example, the pump 21 can be switched on and off and / or the speed thereof changed by means of the regulating and control facility 34. The regulating and control facility 34 can receive and evaluate information from the pump device 19, such as for example the speed of the pump 21 and / or a motor current of the pump 21. The regulating and control facility 34 can also activate the water deflector 23, in order to turn on or turn off the spray facilities 24, 25, 26 selectively.

[0087] Items to be washed G and to be cleaned are arranged in the dishwasher cavity 2. The items to be washed G can comprise, for example, glasses, plates, pots, bowls, cutlery, or the like. In particular, the items to be washed G are received in the receptacles for items to be washed 12, 13, 14, not shown in FIG. 2. Washing liquor and / or fresh water F can be applied to the items to be washed G by means of the spray facilities 24, 25, 26.

[0088] FIG. 3 shows a schematic sectional view of an embodiment of a pump device 19 as mentioned above. The pump device 19 is assigned an axial direction AX which extends from bottom to top in the orientation of FIG. 3. The axial direction AX coincides with the center axis 20 or is oriented parallel thereto. Moreover, the pump device 19 is assigned a radial direction R. The radial direction R is oriented perpendicularly to the center axis 20 and away therefrom. The axial direction AX and the radial direction R are thus oriented perpendicularly to one another.

[0089] As mentioned above, the pump device 19 comprises the pump 21 and the water deflector 23. The pump device 19 differs from the pump 21 in that the pump device 19 also comprises the water deflector 23 in addition to the pump 21.

[0090] The pump device 19 comprises a housing 35 with a housing lower part 36, a housing upper part 37 and a housing inner part 38. The housing lower part 36 comprises a pump inlet 39 to which the suction pipe 22 is connected. For example, the suction pipe 22 is positioned on the pump inlet 39 and is sealed relative thereto by means of a sealing element, for example in the form of an O-ring. The housing 35 is constructed substantially rotationally symmetrically to the center axis 20.

[0091] 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 film heating element. The tubular heating element 40 is sealed by means of sealing elements, for example the form of O-rings, relative to the housing lower part 36 and the housing upper part 37. The tubular heating element 40 is tubular or hollow-cylindrical. The tubular heating element 40 is constructed rotationally symmetrically to the center axis 20. The tubular heating element 40 is thus held between the housing lower part 36 and the housing upper part 37. During the operation of the pump device 19, the washing liquor and / or the fresh water F flows on the inside along the tubular heating element 40.

[0092] The housing lower part 36 and the housing upper part 37 are positively connected to one another (not shown). To this end, it is possible to provide latching hooks, snap hooks or the like, which enable a positive connection of the housing lower part 36 to the housing upper part 37. A positive connection is produced by two connecting partners engaging in one another or behind one another, in the present case the housing lower part 36 and the housing upper part 37. The housing inner part 38 is positively connected to the housing upper part 37. Corresponding latching hooks, snap hooks or the like, are also provided to this end. 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.

[0093] The housing lower part 36 receives an impeller wheel 41 which is arranged downstream of the pump inlet 39. The impeller wheel 41 is driven by a drive motor 42. The drive motor 42 is an electric motor. The impeller wheel 41 can also be denoted as an impeller. The drive motor 42 comprises a drive shaft 43 which is connected in a fixed manner in terms of rotation to the impeller wheel 41 and which, during the operation of the pump device 19, rotates around the center axis 20. In addition to the impeller wheel 41, a rotor 44 of the drive motor 42 is connected in a fixed manner in terms of rotation to the drive shaft 43.

[0094] The rotor 44 is rotatably mounted around the center axis 20 in a pot-shaped first receiving portion 45 of the housing inner part 38. The first receiving portion 45 encloses a receiving space 46 in which the rotor 44 is received. The receiving space 46 can be filled with washing liquor and / or fresh water F. The first receiving portion 45 is closed downwardly in the orientation of FIG. 3, i.e. in the direction of the impeller wheel 41, by a closure 47. The drive shaft 43 is guided through the closure 47 and can be mounted thereon.

[0095] In addition to the first receiving portion 45, the housing inner part 38 comprises a second receiving portion 48. The second receiving portion 48 is also pot-shaped. In contrast to the first receiving portion 45, however, in the orientation of FIG. 3 the second receiving portion 48 is not open at the bottom but at the top. The first receiving portion 45 is arranged inside the second receiving portion 48. The second receiving portion 48 thus has a greater diameter than the first receiving portion 45.

[0096] A ring-shaped receiving space 49 is provided between the first receiving portion 45 and the second receiving portion 48. A stator 50 of the drive motor 42 is arranged in the receiving space 49. The stator 50 can be adhesively bonded to the first receiving portion 45 and / or the second receiving portion 48.

[0097] The pump 21 is formed, in particular, by the drive motor 42, the impeller wheel 41 and at least parts of the housing 35. The tubular heating element 40 can also be part of the pump 21. In particular, the two receiving portions 45, 48 of the housing inner part 38 are part of the pump 21. In contrast thereto, the pump device 19 also comprises the water deflector 23 in addition to the pump 21.

[0098] FIG. 4 shows a schematic plan view of the pump device 19. The housing inner part 38 has a plurality of fluid outlets 51, 52, 53, 54 to which the supply lines 30, 31, 32 are connected. In the case that three spray facilities 24, 25, 26 are provided, exactly three fluid outlets 51, 52, 53, 54 are also provided. In the case that four spray facilities 24, 25, 26 are provided, for example, accordingly four fluid outlets 51, 52, 53, 54 are also provided.

[0099] In the present case, the fluid outlet 51 is assigned to the spray facility 24. The fluid outlet 51 can function at the same time as a mount for the spray facility 24. The fluid outlet 52 is an additional outlet which can be assigned, for example, to an intensive spray zone, not shown. The fluid outlet 53 is assigned to the spray facility 26 and the fluid outlet 54 is assigned to the spray facility 25. The assignment, however, can also be selected differently.

[0100] The fluid outlets 51, 52, 53, 54 are tubular and extend along the center axis 20 or in the axial direction AX. The fluid outlets 51, 52, 53, 54 in each case can have a circular or an elliptical or oval cross section. During the operation of the pump device 19, the washing liquor and / or the fresh water F can be discharged via the fluid outlets 51, 52, 53, 54.

[0101] The fluid outlets 51, 52, 53, 54 extend from a cover plate 55 of the housing inner part 38, closing the housing upper part 37 on the front face. A tubular or hollow-cylindrical connection portion 56 circulates around the cover plate 55, the housing inner part 38 being connected thereby to the housing upper part 37.

[0102] Now returning to FIG. 2 a water deflector disk 57, which is rotatable around the center axis 20, is arranged between the housing inner part 38, in particular the cover plate 55, and the housing upper part 37, which is also shown in a plan view in FIG. 5. FIG. 6 shows a schematic sectional view of the water deflector disk 57. FIG. 7 shows a schematic perspective exploded view of the water deflector disk 57. The water deflector disk 57 is in two parts and has an annular disk 58 and a drive ring 59 which is shown in FIG. 8 in a separate schematic perspective view.

[0103] The water deflector disk 57 is part of the water deflector 23. The water deflector disk 57 is constructed rotationally symmetrically to the center axis 20. The water deflector disk 57 has a central through-hole 60. The through-hole 60 is provided, in particular, on the ring-shaped annular disk 58. The through-hole 60 is preferably circular. Moreover, the water deflector disk 57 has a plurality of through-holes 61, 62, 63 passing through the annular disk 58 and by which the fluid outlets 51, 52, 53, 54 can be selectively blocked or opened by a rotation of the water deflector disk 57.

[0104] The through-holes 61, 62, 63 can be circular. The through-holes 61, 62, 63 can be elongated. Due to the elongated geometry, it is possible to open a plurality of fluid outlets 51, 52, 53, 54 at the same time. The number of through-holes 61, 62, 63 can correspond to the number of fluid outlets 51, 52, 53. However, this is not absolutely necessary. The fluid outlets 51, 52, 53, 54 can be combined together by means of the water deflector disk 57, in particular by means of the annular disk 58, as desired. Thus it is possible, for example, to open the fluid outlets 51, 52 and to block the fluid outlets 53, 54.

[0105] The water deflector disk 57, in particular the annular disk 58, is guided on the inside on its through-hole 60 by means of guide portions 64, 65, 66 such that the water deflector disk 57 is rotatably mounted around the center axis 20. The number of guide portions 64, 65, 66 is arbitrary. Particularly preferably, however, three guide portions 64, 65, 66 which are arranged so as to be evenly distributed around the center axis 20 are provided. The guide portions 64, 65, 66 are, in particular, part of the housing inner part 38. Washing liquor and / or fresh water F can flow between the guide portions 64, 65, 66 radially inwardly from the water deflector disk 57 in the direction of the center axis 20. Instead of guide portions 64, 65, 66 spaced apart from one another, however, a continuous ring-shaped guide portion (not shown) can also be provided. In this case, it has a drainage opening oriented in the direction of the center axis 20.

[0106] The annular disk 58 has cutouts 67, 68, 69 on the outside facing away from the through-hole 60. Preferably, exactly three cutouts 67, 68, 69 are provided. The cutouts 67, 68, 69 are preferably arranged so as to be distributed unevenly around the center axis 20.

[0107] The drive ring 59 has a ring-shaped base portion 70. A circumferential toothing 71, in particular a helical toothing, is attached to the outside of the base portion 70. Driver elements 73, 74, 75 extend from a front face 72 of the base portion 70 facing upwardly in the orientation of FIG. 8. The driver elements 73, 74, 75 are designed to engage positively in the cutouts 67, 68, 69 of the annular disk 58, so that the drive ring 59 is positively connected to the annular disk 58. The driver elements 73, 74, 75 are preferably arranged so as to be distributed unevenly around the center axis 20, so that an encoding is implemented when assembling the annular disk 58 and the drive ring 59, which prevents an incorrect assembly (poka-yoke).

[0108] When viewed along the center axis 20 or the axial direction AX, the annular disk 58 can be lifted away from the drive ring 59 so that, during the operation of the pump device 19, the annular disk 58 can float on the washing liquor and / or the fresh water F. However, the positive connection is maintained between the annular disk 58 and the drive ring 59.

[0109] The water deflector disk 57 or the annular disk 58, which opens and closes the different fluid outlets 51, 52, 53, 54 as desired, is shaped as a circular ring so that it can be guided on an inner starting diameter or bearing diameter and can be driven on an outer face thereof, as explained in more detail below. Preferably, an inner diameter of the annular disk 58 is greater than an outer diameter of the stator 50 of the drive motor 42. Due to this arrangement, at least three of the fluid outlets 51, 52, 53, 54 can be opened and closed on the same pitch circle in a corresponding combination. However, four or five fluid outlets 51, 52, 53, 54 are also possible. In addition, there is the possibility of arranging the fluid outlets 51, 52, 53, 54 further spaced apart from one another geometrically than was possible in previous solutions, which results in shorter paths to the different spray facilities 24, 25, 26.

[0110] FIG. 9 shows a schematic sectional view of an embodiment of a water deflector 23 as mentioned above. The water deflector 23 comprises, in addition to the annular disk 58 (not shown) and the drive ring 59, at least one part of the housing inner part 38, namely the fluid outlets 51, 52, 53, 54 and the cover plate 55, at least one part of the housing upper part 37 and a water deflector drive 76 for rotating the water deflector disk 57 around the center axis 20 so that the fluid outlets 51, 52, 53, 54 can be selectively blocked and opened.

[0111] The water deflector drive 76 has a first housing part 77 which is integrally formed on the housing upper part 37. A second housing part 78 is positively connected, in particular latched or snapped, to the first housing part 77, wherein the second housing part 78 closes the first housing part 77. A sealing element, for example in the form of an O-ring, can be provided between the first housing part 77 and the second housing part 78. The housing parts 77, 78 enclose an interior 79 which is filled with washing liquor and / or fresh water F during the operation of the pump device 19.

[0112] The water deflector drive 76 also 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 interior 79. The rotor 81 is connected in a fixed manner in terms of rotation to a drive shaft 82 which in turn is rotatably mounted on both housing parts 77, 78. A worm 83 which engages in the toothing 71 of the drive ring 59 is attached to the drive shaft 82. A lower edge of the worm 83 is not arranged deeper than a lower edge of the drive ring 59 so that the interior 79 can be drained. The water deflector drive 76 is a wet rotor. The water deflector drive 76 is an electric motor.

[0113] The drive ring 59 is received in an annular groove 84 which is filled with washing liquor and / or fresh water F and which is integrally formed on the housing upper part 37. A plurality of guide webs 85, 86, 87, 88 on which the drive ring 59 is guided on the inside radially protrude into the annular groove 84. The number of guide webs 85, 86, 87, 88 is arbitrary. Preferably, at least three guide webs 85, 86, 87, 88 are provided. The annular groove 84 can be drained via a drainage opening 89 in the direction of the center axis 20. The interior 79 is fluidically connected to the annular groove 84. Thus the interior 79 can also be drained via the annular groove 84 and the drainage opening 89 in the direction of the center axis 20.

[0114] The interior 79 and the annular groove 84 form a fluid chamber 90 which is filled with washing liquor and / or fresh water F. The rotor 81, the drive shaft 82, the worm 83 and the drive ring 59 are located inside the fluid chamber 90. Thus no moving seal is required.

[0115] In order to be able to vary a required electrical input power and a rotational direction of the water deflector drive 76, the water deflector drive 76 is configured as a brushless motor. In particular, the water deflector drive 76 is a permanent synchronous motor (PMSM). Preferably, the water deflector drive 76 is a brushless direct current motor (BLDC). The water deflector drive 76 is electronically commutated. A brushless alternating current motor (BLAC) can also be used as the water deflector drive 76.

[0116] The water deflector drive 76 is designed as a wet rotor so that during the operation of the pump device 19 no losses are caused by moving seals. In addition, the worm 83 on the output shaft 82 provides the option to transmit a maximum gear ratio with only one gear stage and thus the maximum torque with the smallest possible electrical input power to the water deflector disk 57. The gear ratio between the worm 83 and the drive ring 59 preferably ranges from 1:50 to 1:250. Preferably, a hard ferrite ring is used as material for the rotor 81. As a result, corrosion protection can be dispensed with.

[0117] A minimizing of the losses due to moving seals, no wear over the service life of the pump device 19 on seals and a dirt-tolerant transmission can be cited as advantages of this arrangement explained above, since the worm 83 during a rotation thereof removes dirt from the toothing 71 of the drive ring 59. This provides an advantage, in particular, relative to a spur gear toothing. The worm 83 preferably has a globoid toothing.

[0118] Moreover, it is possible to change a rotational direction and to change a speed. It is possible to generate the largest possible gear ratio with only one gear stage. The worm 83 can be designed with one thread. The drive ring 59 has the greatest possible diameter in order to generate the largest possible gear ratio in order to generate the greatest possible torque with the smallest possible water deflector drive 76. This saves resources.

[0119] Suitable sensor functions can be incorporated, depending on the selected type of motor for the water deflector drive 76. The water deflector drive 76 can be positioned at an angle of 90° or at a specific angle to the drive ring 59 so that no blind holes are produced in which washing liquor and / or fresh water F or dirt can remain. The water deflector 23 is thus insensitive to dirt.

[0120] A self-locking can be achieved by the use of the worm 83 and the toothing 71 of the drive ring 59, so that the water deflector disk 57 cannot rotate inadvertently. In the case of high friction between the drive ring 59 and the housing upper part 37, the high gear ratio also ensures that the water deflector disk 57 can always rotate reliably.

[0121] The arrangement explained above has a series of advantages. Advantageously, a pressurized sealing point between the pump 21 and the water deflector 23 is eliminated. This results in a reduced overall height and thus a smaller constructional space requirement. A reduction in the water requirement and the so-called circulation quantity is possible. A circulation pump system with greater efficiency can be implemented by the pump device 19. This results in further possible positions and / or a combination of open and closed fluid outlets 51, 52, 53, 54. This results in an even flow toward the fluid outlets 51, 52, 53, 54. This also results in the possibility of the spatial separation of the fluid outlets 51, 52, 53, 54.

[0122] The water deflector disk 57 is accordingly designed in two parts inside the pump device 19. The function of the annular disk 58 as a perforated disk is decoupled from the drive ring 59 which is used as a drive for the annular disk 58. This arrangement makes it possible to drive the drive ring 59 tangentially via the toothing 71, and thus to design a bearing play optimally between the drive ring 59 and the driving worm 83. In addition, the annular disk 58 can be floatingly mounted on the drive ring 59 so that with the prevailing water pressure it can float up in the axial direction AX from the drive ring 59 and thus better seal the closed fluid outlets 51, 52, 53, 54.

[0123] The floating of the annular disk 58 can be in the range of 0.2 mm to 2 mm in order to generate the fewest possible flow losses in the region of a support between the annular disk 58 and the drive ring 59. The driver elements 73, 74, 75 are positioned on the drive ring 59 such that the annular disk 58 can be mounted only in one defined position (poka-yoke). Preferably plastic, for example polyoxymethylene (POM), is used as material for the drive ring 59 and the annular disk 58. An inner diameter of the drive ring 59 and the annular disk 58 can be in the range of 50 mm to 120 mm. An outer diameter can vary between 90 mm and 200 mm. A thickness of the annular disk 58 is, for example, 1.4 mm in order to ensure a certain flexibility. Preferably, the thickness is in a range of between 0.8 mm and 3 mm.

[0124] Advantageously, therefore, a floating bearing of the annular disk 58 can be achieved. This results in as many initial combinations as possible with the through-holes 61, 62, 63 in the annular disk 58 on the same pitch circle. A good sealing behavior of unopened fluid outlets 51, 52, 53, 54 can be achieved by the floating mounting. The two-part construction of the water deflector disk 57 results in a simplified floating of the annular disk 58. This reduces the risk of the annular disk 58 tilting and / or jamming.

[0125] The floating mounting of the annular disk 58 decouples it from a bearing play of the water deflector drive 76. The complexity of different water deflector disks 57 is shifted into a part which can be produced in a structurally simple manner, namely the annular disk 58. This results in an accurate mounting of the water deflector drive 76 in order to achieve a more accurate axial spacing tolerance in the gear stage, since the drive ring 59 does not float or floats to a lesser extent and maintains the position thereof relative to the driving element in the form of the worm 83.

[0126] This results in a defined engagement of the worm 83 in the drive ring 59. The water deflector 23 is easy to repair since in the case of wear the drive ring 59 can be replaced independently of the annular disk 58. A reduced friction of the drive ring 59 on the housing 35 is achieved when the pump device 19 is switched off. This leads to a reduction in wear. This results in an even flow toward the annular disk 58 from below and thus a lower risk of the annular disk 58 tilting. A plurality of closure elements are not required, but rather a single closure element in the form of the annular disk 58 inside the pump device 19.

[0127] FIG. 10 shows a sectional view of an embodiment of a fluid outlet 51 as mentioned above. All of the following embodiments relating to the fluid outlet 51 are correspondingly applicable to the fluid outlets 52, 53, 54. The fluid outlet 51 extends in the orientation of FIG. 10 at the top out of the cover plate 55. The fluid outlet 51 has the geometry of an asymmetrical hopper.

[0128] The fluid outlet 51 comprises a tubular connection portion 91. The connection portion 91 can be circular or oval or elliptical in cross section. An oval cross section has the advantage that constructional space can be saved in the radial direction R, wherein a greater flow cross section can be achieved in the radial direction R in comparison with a circular cross section with the same constructional space. One of the supply lines 30, 31, 32 is connected to the connection portion 91.

[0129] Returning now to FIG. 3, a diffuser chamber 92 circulating in a ring-shaped manner around the center axis 20 is formed between the housing lower part 36, the tubular heating element 40, the housing upper part 37 and the second receiving portion 48 of the housing inner part 38. The diffuser chamber 92 extends from the pump inlet 39 in the direction of the water deflector disk 57. The diffuser chamber 92 is constructed rotationally symmetrically to the center axis 20. Upstream of the water deflector disk 57, the diffuser chamber 92 widens and distributes the washing liquor and / or the fresh water F onto the water deflector disk 57. The water deflector 23 or the water deflector disk 57 is integrated into the diffuser chamber 92. The fluid outlets 51, 52, 53, 54 lead out of the diffuser chamber 92.

[0130] In the ring-shaped diffuser chamber 92, during the operation of the pump device 19, the washing liquor and / or the fresh water F flows in a flow direction S (FIG. 4) in a circular manner around the center axis 20 and through those fluid outlets 51, 52, 53, 54, which are opened by means of the water deflector 23, in the axial direction AX upwardly to the corresponding supply lines 30, 31, 32 in order to apply washing liquor and / or fresh water F to the spray facilities 24, 25, 26.

[0131] As FIG. 10 shows, a transition portion 93 adjoins the connection portion 91, the tubular connection portion 91 being connected thereby to the cover plate 55. The transition portion 93 has an asymmetrical hopper geometry as mentioned above. This geometry can also be denoted as being shoe-shaped.

[0132] The transition portion 93 has a rounding or a radius 94. A bevel 95 is provided opposing the radius 94, which bevel transitions by means of a radius 96 into the cover plate 55 and transitions by means of a radius 97 into the connection portion 91. The transition portion 93 runs entirely around the connection portion 91, wherein the radius 94, the bevel 95 and the radii 96, 97 transition into one another.

[0133] The geometry of the fluid outlet 51 in the preferred flow direction S is adapted inside the pump device 19 by the radii 94, 96, 97 and the bevels 95 and by the resulting asymmetrical geometry toward the connection portion 91, so that an optimal inflow of the washing liquor and / or the fresh water F is possible into the fluid outlet 51.

[0134] This asymmetrical geometry, which can also be denoted as a shoe-shaped geometry, replicates a small spiral housing for the fluid outlet 51. In addition, the radii 94, 96 of the fluid outlet 51 are continued by means of radii 98, 99 at the through-holes 61, 62, 63 of the annular disk 58 of the water deflector 23. Moreover, the radius 94 is attached to a side of the fluid outlet 51 facing away from the flow, so that washing liquor and / or fresh water F can also flow into the fluid outlet 51 counter to the flow direction S. The preferably elliptical cross-sectional geometry of the fluid outlet 51 or the connection portion 91 also enables an increase in the flow cross section without increasing a diameter of the water deflector disk 57 or a diameter of the pump device 19.

[0135] An optimal deflection of the washing liquor and / or the fresh water F at the fluid outlet 51 can be cited as an advantage of this arrangement shown in FIG. 10, in order to achieve the greatest possible hydraulic efficiency of the pump device 19. This results in an optimal use of the flow cross section of the fluid outlet 51 since no turbulence, or at least less turbulence, is produced when the washing liquor and / or the fresh water F flows into the fluid outlet 51 and thus the entire flow cross section thereof can be used. The preferably elliptical cross section of the fluid outlet 51 or the connection portion 91 enables an increase in the flow cross section without increasing the diameter of the water deflector disk 57 of the water deflector 23 and thus leads to a more compact pump device 19.

[0136] FIG. 11 shows a schematic plan view of an embodiment of a sealing facility 100. FIG. 12 shows a schematic sectional view of the sealing facility 100. The sealing facility 100 is designed to seal the tubular heating element 40 in a fluid-tight manner relative to the housing lower part 36.

[0137] The sealing facility 100 is designed rotationally symmetrically to the center axis 20. The sealing facility 100 is a sealing ring. The sealing facility 100 comprises a V-shaped receiving portion 101 which is received in a suitably shaped annular groove of the housing lower part 36. The receiving portion 101 has an annular groove 102 which circulates fully around the center axis 20 and in which the tubular heating element 40 is received. The annular groove 102 is provided between a first limb 103 and a second limb 104 of the receiving portion 101.

[0138] A deflection portion 105 extends at the top from the second limb 104, which deflection portion is designed to deflect the washing liquor and / or the fresh water F in the direction of the axial direction AX as indicated by means of an arrow 106. The deflection portion 105 has at the bottom a ring-shaped bearing surface 107 by which the deflection portion 105 bears on the inside against the housing lower part 36.

[0139] Facing away from the bearing surface 107, the deflection portion 105 has a radius 108. The washing liquor and / or the fresh water F is deflected by means of the radius 108, as indicated by means of the arrow 106. The radius 108 forms a fluid-facing side of the sealing facility 100. A cylindrical outer surface 109 which is constructed rotationally symmetrically to the center axis 20 is provided on the deflection portion 105. The deflection portion 105 bears on the inside against the tubular heating element 40 by means of the outer surface 109.

[0140] The sealing facility 100 seals the tubular heating element 40 and fixes it and conducts washing liquor and / or fresh water F exiting from the impeller wheel 41 at the same time by means of the radius 108 or a bevel upwardly in the direction of the tubular heating element 40. No residues of washing liquor and / or fresh water F are formed inside the pump device 19. It is possible to achieve an optimizing of the hydraulic efficiency of the pump device 19, the avoidance of residues of the washing liquor and / or the fresh water F inside the pump device 19 and a reduction in the circulation quantity, in particular a reduction in a dead volume, of the pump device 19.

[0141] The sealing facility 100 fixes the tubular heating element 40 inside the pump device 19 and seals it at the same time. Moreover, the sealing facility 100 comprises with the radius 108 a hydraulically optimized geometry in order to optimize the hydraulic efficiency of the pump device 19 and to minimize residues of washing liquor and / or fresh water F inside the pump device 19 after the pumping out.

[0142] The V-shaped receiving portion 101 fixes and seals the tubular heating element 40 and at the same time gently conducts the washing liquor and / or the fresh water F exiting from the impeller wheel 41 by means of the above-mentioned bevel or the radius 108 on the fluid-facing side of the sealing facility 100 upwardly onto the tubular heating element 40. In addition, the above-mentioned annular groove of the housing lower part 36 is filled up thereby and no residues of the washing liquor and / or the fresh water F are formed inside the pump device 19.

[0143] An optimizing of the hydraulic efficiency of the pump device 19, the avoidance of residues of washing liquor and / or fresh water F inside the pump device 19 which leads to a more hygienic design and a reduction in the circulation quantity of washing liquor and / or fresh water F and thus a reduction in a dead volume, can be cited as advantages of this arrangement explained above.

[0144] Now returning again to FIG. 3, during the operation of the pump device 19 the impeller wheel 41 suctions washing liquor and / or fresh water F via the suction pipe 22 connected to the pump inlet 39. The washing liquor and / or the fresh water F are conveyed upwardly via the diffuser chamber 92 in the direction of the water deflector 23, in particular in the direction of the water deflector disk 57. The washing liquor and / or the fresh water F flows through the pump inlet 39 into the diffuser chamber 92, flows inside the diffuser chamber 92 in the radial direction R outwardly to the radius 108 of the sealing facility 100 and is deflected thereby in the orientation of FIG. 3 upwardly and in the axial direction AX, i.e. counter to the direction of gravity g toward the water deflector disk 57.

[0145] Inside the diffuser chamber 92 the washing liquor and / or the fresh water F flows in the flow direction S around the center axis 20. The flow direction S is oriented in the present case counter-clockwise. However, the flow direction S can also be oriented clockwise. The annular disk 58 of the water deflector disk 57 floats on the washing liquor and / or the fresh water F, wherein the annular disk 58 is lifted away from the front face 72 of the drive ring 59 and is pushed on the inside against the cover plate 55.

[0146] As a result, the annular disk 58 is sealed relative to the cover plate 55 so that the washing liquor and / or the fresh water F can flow out from the pump device 19 only through those fluid outlets 51, 52, 53, 54 which are opened by the annular disk 58. When the annular disk 58 is lifted away from the drive ring 59, the positive connection between the annular disk 58 and the drive ring 59 remains so that the water deflector drive 76 can rotate the water deflector disk 57 as before.

[0147] During the operation of the pump device 19, the regulating and control facility 34 can activate the water deflector drive 76 in order to rotate the water deflector disk 57 and thus selectively to open and / or to close individual or all of the fluid outlets 51, 52, 53, 54. As a result, the spray facilities 24, 25, 26 can be switched on or switched off separately. Thus it is possible, for example, to apply washing liquor and / or fresh water F in a targeted manner only to the two spray facilities 24, 25 and not the spray facility 26.

[0148] The spray facilities 24, 25, 26 can thus be activated or deactivated as desired. The activation or deactivation of the spray facilities 24, 25, 26 as desired, preferably takes place during a wash cycle which is carried out by means of a wash program. The wash program can be stored in the regulating and control facility 34. As many different wash programs as desired can be stored in the regulating and control facility 34.

[0149] The pump inlet 39 forms, in particular, a lowest point of the pump device 19. This leads to the washing liquor and / or the fresh water F fully draining out of the pump device 19 due to gravity, as is indicated in FIG. 3 by means of an arrow 110.

[0150] The design of the pump device 19 explained above, during a washing process of the household dishwasher 1, leads to a washing solution carryover being kept as small as possible from one washing bath to the next. This target is reached by a residual quantity of washing liquor and / or fresh water F, after being pumped out, being as small as possible specifically in the pump sump 16. A substantial effect of a reduction in the residual quantity of washing liquor and / or fresh water F is an improvement in the so-called stain value after drying. This results in fewer detergent and dirt residues being able to dry on the dishes and thus becoming visible if less washing solution is carried over into the rinse-aid bath.

[0151] In order to ensure a complete draining of the pump device 19, the drive motor 42 is vertically aligned with the impeller wheel 41. This means that the center axis 20 runs parallel to the direction of gravity g. The fluid outlets 51, 52, 53, 54 are also vertically arranged. In order to ensure the lowest possible overall height, the water deflector 23 is integrated therewith into the pump device 19. The diffuser chamber 92 of the pump device 19 is preferably an annular gap which surrounds the drive motor 42 on the one hand and is defined by the tubular heating element 40 on the other hand.

[0152] An exemplary spacing between the drive motor 42 and the tubular heating element 40 or a gap width of the diffuser chamber 92 is between 3 mm and 12 mm. Due to this arrangement, the waste heat of the drive motor 42 can also be transported away by the washing liquor and / or the fresh water F. In addition, an optimal venting of the pump device 19 can be ensured in this arrangement, since no air chambers are present in an upper region of the pump device 19, in particular in the region of the water deflector 23.

[0153] This means that when the pump sump 16 is filled with washing liquor and / or fresh water F, the pump device 19 runs full with washing liquor and / or fresh water F in parallel as in the case of two communicating pipes, and no air chambers are formed, which is advantageous for an uninterrupted operation of the pump device 19. The fluid outlets 51, 52, 53, 54 of the water deflector 23 to the spray facilities 24, 25, 26 are located on a circular ring and can be optimally arranged there. At least some of the fluid outlets 51, 52, 53, 54 can have an oval flow cross section rather than a circular flow cross section.

[0154] During a pumping-out process by means of the pump device 19, the entire washing liquor and / or fresh water F runs back into the pump sump 16. One effect is the improvement of the washing result. In particular, this leads to fewer marks on the items to be washed G. A complete venting is possible without any additional measures. A heat dissipation or cooling of the drive motor 42 can take place via the contact of the stator 50 with the diffuser chamber 92. Only the second receiving portion 48, which defines the diffuser chamber 92, is arranged between the stator 50 and the diffuser chamber 92. This results in a very compact design and thus corresponding advantages in terms of constructional space for the pump device 19.

[0155] In summary, when viewed from bottom to top along the center axis 20, a pump inlet 39, a pump chamber or impeller wheel chamber 119 with an impeller wheel or impeller 41 which can be rotatably driven therein for conveying the washing liquid F, a pressure and / or diffuser chamber 92 arranged downstream of the pump chamber 119, a water deflector element 57 which is rotatable around the center axis 20 in the upper end portion of the pressure and / or diffuser chamber 92, and the plurality of fluid outlets, such as for example 51, 52, 53, 54, of the pump device 19, are provided at successive height levels as functional sections of the liquid conveying channel 121 of the pump device 19. “Liquid conveying channel” is understood to mean the hollow space which is provided in the housing 35 of the pump device 19 and which is filled and flowed through by the washing liquid F in the conveying mode of the pump device 19. Due to this vertical sequence of the different functional sections of the liquid conveying channel 121 of the pump device, when viewed from the pump inlet 39 to the outlet opening, such as for example A51, A52, A53, A54 of the respective fluid outlet, such as for example 51, 52, 53, 54, the washing liquid F is guided in the housing 35 rising upwardly from bottom to top counter to the direction of gravity g. Deflections and / or reflections of the conveyed washing liquid F with a directional component in the direction of gravity g, i.e. in the direction opposing its conveying direction facing from bottom to top are substantially avoided. A retrograde flow of the washing liquid F conveyed by the impeller wheel 41 is thus substantially avoided on the path thereof through the liquid conveying channel 121 from bottom to top. In addition, the successive arrangement of the different functional sections of the liquid conveying channel 121 is advantageous for a simple design and, associated therewith, a simple production of the pump device 19. Conversely, for example in the case of repair, this pump device can be easily dismantled and each essential component of the pump device made accessible. Moreover, due to this sequence of the different functional sections of the liquid conveying channel 121 it is ensured that the washing liquid F can drain completely out of this liquid conveying channel downwardly via the pump inlet 39 solely by the effect of gravity when the drive motor 42 for the impeller wheel 41 is switched off and the impeller wheel 41 is stationary. For the liquid conveying channel 121 to be drained as completely as possible it is advantageous, in particular, if the pump inlet 39 is expediently provided at the lowest point of the pump device 19. This avoids residual water remaining in the liquid conveying channel 121 of the housing 35 of the pump device 19 when the drive motor 42 for the impeller wheel 41 thereof is out of operation. As a result, it can lead to little or no so-called carryover of dirty water and / or washing solution when changing the washing bath from a partial wash cycle, such as for example the cleaning cycle, to the following partial wash cycle, such as for example the intermediate wash cycle or rinse-aid cycle of the wash cycle of a dishwashing program to be carried out. This is because when changing the washing bath, the washing liquid used for the respective partial wash cycle can now drain at least virtually completely out of the pump device 19 and be removed from the hydraulic circuit, in particular by pumping out the pump sump 16 by a drain pump (not shown in FIGS. 2, 3), and new washing liquid, in particular fresh water, can be supplied to the hydraulic circuit 33 for the next partial wash cycle without it being able to be mixed with stagnant or residual water from the previous partial wash cycle. As a result, marks due to dirt particles, limescale particles, etc. can be reduced or can be no longer present on the items to be washed G which are rinsed with rinse-aid and then dried, i.e. this leads to an improved washing result. In particular, the intermediate wash cycle, previously provided between the cleaning cycle and the rinse-aid cycle, can optionally be carried out with a smaller quantity of fresh water or even be entirely dispensed with, since it is no longer absolutely necessary to flush out residual or stagnant water containing dirt particles and / or detergent from the pump device 19.

[0156] FIG. 13 shows a schematic plan view of an embodiment of a blank 111 for producing the stator 50 of the drive motor 42 and the stator 80 of the water deflector drive 76. FIG. 14 shows an arrangement 112 comprising a first stator lamination 113 which is assigned to the stator 50 and a second stator lamination 114 which is assigned to the stator 80.

[0157] The arrangement 112 is manufactured from the blank 111. The blank 111 can be circular. However, the blank 111 can in principle have any geometry. The arrangement 112 can be produced by means of a punching method from the blank 111. When producing the arrangement 112, the first stator lamination 113 and the second stator lamination 114 are manufactured at the same time. The stator 50 is produced from a stack of first stator laminations 113. Accordingly, the stator 80 is produced from a stack of second stator laminations 114.

[0158] The first stator lamination 113 has a circulating annular portion 115 from which a plurality of root portions 116 extend inwardly. The first stator lamination 113 has an inner diameter di on the root portions 116. The second stator lamination 114 also has a circulating annular portion 117 from which a plurality of root portions 118 extend inwardly. The annular portion 117 has an outer diameter da which is smaller than the inner diameter di so that the second stator lamination 114 can be arranged inside the first stator lamination 113.

[0159] It is thus possible to produce both the stator 50 of the drive motor 42 and the stator 80 of the water deflector drive 76 from one and the same blank 111. The stator 80 of the water deflector drive 76 is thus dimensioned such that it is smaller or the same size as a stator cutout in the center of the stator 50 of the drive motor 42 and it then forms the stator 80 for the water deflector drive 76. Thus the stator 50 of the drive motor 42 and the stator 80 of the water deflector drive 76 can be produced in one process step.

[0160] Since the pump device 19 and the water deflector drive 76 are always required in pairs for producing the household dishwasher 1, this leads to a simplified production and also to a cost reduction. This could similarly be applied to the combination of a stator 50 of the drive motor 42 and a stator of a drain pump.

[0161] It is thus possible to use punching waste which arises when producing the stator 50 of the drive motor 42, for producing a stator of a further motor, in the present case of the water deflector drive 76, which leads to material savings. At the same time, two punched stator stacks can be produced in one process step, which leads to savings in manufacturing costs. Only one stack punching die is required, whereby investment costs can also be reduced. This advantageously results in conserving resources relative to material consumption.

[0162] FIG. 15 shows in a schematic sectional view a variant of the pump device 19 which is modified relative to the embodiment of FIG. 3. In contrast to FIG. 3, in FIG. 15 the housing 35 of the pump device 19 has an integral housing outer part 367 which outwardly defines the liquid conveying channel 121, which is at least virtually rotationally symmetrical to the center axis 20, in particular up to the fluid outlets, such as for example 51-54. Instead of the tubular heating element 40, at least one tubular heating body RH is now accommodated in the liquid conveying channel 121. As a result, the design or the construction of the pump device according to the invention can be further simplified. It can already be sufficient if the housing 35 of the pump device 19 is composed of merely two parts-the housing outer part 367 and the housing inner part 38. However, it is possible to provide a cover part DE by which the upper opening of the housing inner part 38 can be closed. Such a cover part DE is shown in FIG. 15 merely by dashed lines for the sake of simplicity in the drawings. As a result, the stator 50 accommodated in the housing inner part 38 between the first receiving portion 45 and the second receiving portion 48 thereof can be reliably protected against moisture and / or washing liquid. The housing outer part 367 and the housing inner part 38 incorporated or immersed therein can be mechanically connected together, for example by a snap connection, latching connection and / or bayonet connection and / or other coupling. As at least one tubular heating body RH is accommodated in the liquid conveying channel 121 formed between the housing inner part 38 and the housing outer part 367, an improved heat transfer is also produced between the tubular heating body RH and the washing liquid F conveyed from bottom to top through the liquid conveying channel 121 by means of the impeller wheel or the pump wheel 41 of the pump device 19.

[0163] In particular, the second receiving portion 48 forms at least one sub-portion of the inner defining wall of the liquid conveying channel 121.

[0164] The tubular heating body RH is provided in the liquid conveying channel 121, when viewed along the flow path thereof, expediently downstream of the impeller wheel 41 of the pump device 19, in particular arranged at least virtually rotationally symmetrically to the center axis 20, preferably at least virtually concentrically to the second receiving portion 48. Expediently the tubular heating body is arranged symmetrically relative to the center axis or central axis of the liquid conveying channel 121 which is preferably configured in a circular-cylindrical manner such that, when viewed in the respective passage cross-sectional plane of the liquid conveying channel 121, at least approximately the same gap width results between the tubular heating body RH and the inner defining wall of the liquid conveying channel 121 formed by the housing inner part 38, and between the tubular heating body RH and the outer defining wall of the liquid conveying channel 121 formed by the housing outer part 367 for the washing liquid F flowing through therein. Thus the conveyed washing liquid F can flow substantially evenly through the tubular heating body RH, which is advantageous for the transfer of heat from the tubular heating body to the washing liquid flowing past said tubular heating body.

[0165] In particular, it can be sufficient and / or advantageous if the tubular heating body RH is accommodated with approximately only one winding or one winding sub-portion in the liquid conveying channel 121 and circulates around the center axis 20, preferably encircles the second receiving portion 48 of the housing inner part 38. As a result, impairments to the flow conditions due to the tubular heating body RH in the liquid conveying channel 121 can be minimized or substantially avoided. In this regard and / or also in terms of technical design, it can be advantageous, in particular, if the winding or the winding sub-portion of the tubular heating body RH is arranged at least approximately horizontally or in a plane at right-angles to the center axis 20. However, it is also possible that the tubular heating body RH circulates around the center axis 20 with more than one winding in the liquid conveying channel 121, for example if a greater heat transfer to the washing liquid is required.

[0166] Although the present invention has been described with reference to exemplary embodiments, it can be modified in many different ways.REFERENCE SIGNS USED1 Household dishwasher

[0168] 2 Dishwasher cavity

[0169] 3 Door

[0170] 4 Dishwasher interior

[0171] 5 Pivot axis

[0172] 6 Loading opening

[0173] 7 Bottom

[0174] 8 Ceiling

[0175] 9 Rear wall

[0176] 10 Side wall

[0177] 11 Side wall

[0178] 12 Receptacle for items to be washed

[0179] 13 Receptacle for items to be washed

[0180] 14 Receptacle for items to be washed

[0181] 15 Base support

[0182] 16 Pump sump

[0183] 17 Drain

[0184] 18 Filter system

[0185] 19 Pump device

[0186] 20 Center axis

[0187] 21 Pump

[0188] 22 Suction pipe

[0189] 23 Water deflector

[0190] 24 Spray facility

[0191] 25 Spray facility

[0192] 26 Spray facility

[0193] 27 Axis of rotation

[0194] 28 Axis of rotation

[0195] 29 Axis of rotation

[0196] 30 Supply line

[0197] 31 Supply line

[0198] 32 Supply line

[0199] 33 Hydraulic circuit

[0200] 34 Regulating and control facility

[0201] 35 Housing

[0202] 36 Housing lower part

[0203] 37 Housing upper part

[0204] 38 Housing inner part

[0205] 39 Pump inlet

[0206] 40 Tubular heating element

[0207] 41 Impeller wheel

[0208] 42 Drive motor

[0209] 43 Drive shaft

[0210] 44 Rotor

[0211] 45 Receiving portion

[0212] 46 Receiving space

[0213] 47 Closure

[0214] 48 Receiving portion

[0215] 49 Receiving space

[0216] 50 Stator

[0217] 51 Fluid outlet

[0218] 52 Fluid outlet

[0219] 53 Fluid outlet

[0220] 54 Fluid outlet

[0221] 55 Cover plate

[0222] 56 Connection portion

[0223] 57 Water deflector disk

[0224] 58 Annular disk

[0225] 59 Drive ring

[0226] 60 Through-hole

[0227] 61 Through-hole

[0228] 62 Through-hole

[0229] 63 Through-hole

[0230] 64 Guide portion

[0231] 65 Guide portion

[0232] 66 Guide portion

[0233] 67 Cutout

[0234] 68 Cutout

[0235] 69 Cutout

[0236] 70 Base portion

[0237] 71 Toothing

[0238] 72 Front face

[0239] 73 Driver element

[0240] 74 Driver element

[0241] 75 Driver element

[0242] 76 Water deflector drive

[0243] 77 Housing part

[0244] 78 Housing part

[0245] 79 Interior

[0246] 80 Stator

[0247] 81 Rotor

[0248] 82 Drive shaft

[0249] 83 Worm

[0250] 84 Annular groove

[0251] 85 Guide web

[0252] 86 Guide web

[0253] 87 Guide web

[0254] 88 Guide web

[0255] 89 Drainage opening

[0256] 90 Fluid chamber

[0257] 91 Connection portion

[0258] 92 Diffuser chamber

[0259] 93 Transition portion

[0260] 94 Radius

[0261] 95 Slope

[0262] 96 Radius

[0263] 97 Radius

[0264] 98 Radius

[0265] 99 Radius

[0266] 100 Sealing facility

[0267] 101 Receiving portion

[0268] 102 Annular groove

[0269] 103 Limb

[0270] 104 Limb

[0271] 105 Deflection portion

[0272] 106 Arrow

[0273] 107 Bearing surface

[0274] 108 Radius

[0275] 109 Outer surface

[0276] 110 Arrow

[0277] 111 Blank

[0278] 112 Arrangement

[0279] 113 Stator lamination

[0280] 114 Stator lamination

[0281] 115 Annular portion

[0282] 116 Root portion

[0283] 117 Annular portion

[0284] 118 Root portion

[0285] 367 Integral housing outer part

[0286] A Pull-out direction

[0287] AX Axial direction

[0288] da Outer diameter

[0289] DE Cover part

[0290] di Inner diameter

[0291] E Push-in direction

[0292] F Washing liquor and / or fresh water

[0293] g Direction of gravity

[0294] G Items to be washed

[0295] R Radial direction

[0296] RH Tubular heating body

[0297] S Flow direction

Claims

1-16. (canceled)17. A household dishwasher, comprising:a dishwasher cavity for receiving an item to be washed;a hydraulic circuit designed to circulate washing liquor and / or fresh water in the dishwasher cavity; anda pump device designed to apply the washing liquor and / or the fresh water to the hydraulic circuit and defining a center axis which is oriented in a direction of gravity, said pump device comprising a housing, a plurality of fluid outlets, and a water deflector which is integrated into the housing for selectively distributing the washing liquor and / or the fresh water to the plurality of fluid outlets, said water deflector comprising a water deflector disk which is rotatably mounted around the center axis and which comprises a central through-hole through which a part of the housing is guided.

18. The household dishwasher of claim 17, wherein the water deflector disk comprises an annular disk and a drive ring which is designed to drive the annular disk and connected to the annular disk by a positive connection.

19. The household dishwasher of claim 18, wherein the annular disk has through-holes for selectively opening individual ones of the plurality of fluid outlets, or several ones of the plurality of fluid outlets, or all of the plurality of fluid outlets.

20. The household dishwasher of claim 18, wherein the annular disk comprises cutouts, said drive ring comprising driver elements corresponding to the cutouts and engaging positively in the cutouts.

21. The household dishwasher of claim 20, wherein the cutouts and the driver elements are arranged so as to be unevenly distributed around the center axis, or wherein at least one of the cutouts and at least one of the driver elements has a width which is different from a width of the other cutouts and the other driver elements.

22. The household dishwasher of claim 18, wherein during operation of the pump device, the annular disk is designed to float on the washing liquor and / or the fresh water, wherein the positive connection between the annular disk and the drive ring is designed such that the positive connection between the annular disk and the drive ring continues to be maintained when the annular disk is floating.

23. The household dishwasher of claim 18, wherein the drive ring comprises on an outside a toothing circulating at least in one portion around the center axis.

24. The household dishwasher of claim 23, wherein the water deflector comprises a water deflector drive designed to drive the drive ring and comprising a drive shaft which is oriented perpendicularly to the center axis.

25. The household dishwasher of claim 24, wherein the water deflector drive comprises a worm which is attached to the drive shaft and which engages in the toothing.

26. The household dishwasher of claim 18, wherein the drive ring is received in an annular groove provided in the housing.

27. The household dishwasher of claim 26, wherein the housing has a drainage opening which faces in a direction of the center axis and which is fluidically connected to the annular groove.

28. The household dishwasher of claim 26, further comprising guide webs protruding radially into the annular groove, said drive ring being rotatably mounted on the guide webs.

29. The household dishwasher of claim 17, wherein the plurality of fluid outlets are oriented along the center axis.

30. The household dishwasher of claim 17, wherein the pump device comprises an impeller wheel, a drive motor with a rotor for driving the impeller wheel, and a stator, with the rotor being received in a first receiving portion of the housing, and with the stator being received in a second receiving portion of the housing, wherein the second receiving portion is guided through the through-hole.

31. The household dishwasher of claim 17, wherein the water deflector disk is mounted on an inside on the through-hole by guide portions which are integrally formed on the housing.

32. A pump device for a water-carrying household appliance, in particular for the household dishwasher of claim 17, the pump device comprising:a center axis which is oriented in a direction of gravity;a housing;a plurality of fluid outlets;a water deflector, integrated into the housing, for selectively distributing water to the plurality of fluid outlets, said water deflector comprising a water deflector disk which is rotatably mounted around the center axis, and which comprises a central through-hole through which a part of the housing is guided.

Images