household dishwasher

Abstract

The invention relates to a household dishwasher (1) with a feed pipe (20) for feeding water (16) in the direction of a washing chamber (4) and with a flow bushing (33) inserted into the feed pipe (20), wherein the feed pipe (20) has a deflection (23) from a first direction (R1) into a second direction (R2) and, in a region of the deflection (23), an edge (29) on its inner wall (30), and wherein the flow bushing (33) has an outer wall (34) whose shape is adapted to the edge (29), and an inner wall (35) with a curved section (36) which provides a deflection radius (K) in the interior (I) of the feed pipe (20).

Description

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

[0002] The water supply to one or more spray devices of a household dishwasher usually starts from a base area of ​​the household dishwasher along a rear side of the household dishwasher in a vertical direction, e.g., in a vertical feed pipe. The water is then guided, e.g., in a horizontal feed pipe, along a horizontal direction of the household dishwasher, e.g., to the center of a wash cabinet. There, the water is directed to a corresponding spray device, which distributes the water in the wash cabinet. In the transition from the vertical direction to the horizontal direction and subsequently to the spray device, it is necessary to redirect the water flow several times in relation to its direction, e.g., several times by 90°. Increased hydraulic losses occur in the area of ​​these redirections.

[0003] From DE 10 2010 002 894 A1 a dishwasher with a feed pipe for feeding washing liquor from a circulation pump to a spray device is known, in which the feed pipe consists of at least two water-carrying pipe sections which are connected to one another by sealing connecting elements.

[0004] Against this background, it is an object of the present invention to provide an improved household dishwasher.

[0005] Accordingly, a household dishwasher is proposed. The household dishwasher comprises a supply pipe for supplying water toward a wash chamber and a flow bushing inserted into the supply pipe. The supply pipe has a deflection from a first direction to a second direction and, in a region of the deflection, an edge on its inner wall. Furthermore, the flow bushing has an outer wall whose shape is adapted to the edge and an inner wall with a curved section that provides a deflection radius inside the supply pipe.

[0006] The flow bushing with the curved section allows the edge of the supply pipe in the area of ​​the deflection to be covered, e.g., at least partially covered, by the curved section. With other designs, the surface around which the supplied water flows within the supply pipe does not have an edge but rather a deflection radius (i.e., a radius of curvature). This can reduce flow losses when supplying the water, e.g., to a spray arm or the like. In particular, hydraulic losses can be significantly reduced by incorporating the curved section with the radius of curvature in the deflection area. For example, the hydraulic efficiency of the upper spray arm can be improved by up to 7% with a radius of curvature of 3.5 mm, as the applicant determined based on a simulation.

[0007] By optimizing the water supply, you can either increase the cleaning performance of the dishes while maintaining the same pump performance and thus without additional electrical energy consumption, resulting in a shorter wash program runtime. Alternatively, you can reduce the pump performance and thus the electrical energy consumption while maintaining the same cleaning performance, resulting in energy savings and thus improving the energy efficiency of your household dishwasher. With reduced energy consumption, it's also possible to use a less powerful motor.

[0008] In addition, the flow bushing opens up more design options for the production of the feed pipe in the deflection area. Particularly when the feed pipe with the deflection is manufactured from plastic using the injection molding process, the injection molding tool cores usually meet in the deflection area during production. These tool cores are inserted into the tool along the first and second directions and removed again after the plastic pipe has been manufactured (demolding). These tool cores create a sharp inner edge in the deflection area, which causes significant flow losses during operation of the household dishwasher. With the proposed flow bushing, the sharp edge can be replaced by the deflection radius, so that the demolding of the feed pipe does not have to be taken into account.

[0009] Furthermore, if the feed pipe becomes dirty, the end customer can clean it more easily because there are no sharp edges to hinder the cleaning process.

[0010] The household dishwasher comprises, for example, a washing tub that can be closed by a door, in particular a watertight one. The washing tub can be arranged in a housing of the household dishwasher. The washing tub and the door can form a washing chamber for washing dishes. The washing tub has a floor, a ceiling arranged opposite the floor, a rear wall arranged opposite the closed door, and two side walls arranged opposite one another.

[0011] The household dishwasher further comprises at least one dish receptacle. Preferably, several, for example, three, dish receptacles can be provided, wherein a first dish receptacle can be a lower dish receptacle or a lower basket, a second dish receptacle can be an upper dish receptacle or an upper basket, and a third dish receptacle can be a cutlery drawer. The dish receptacles are arranged, for example, one above the other in the washing compartment. Each dish receptacle can be moved selectively into or out of the washing compartment.

[0012] The household dishwasher also has a supply device for supplying water or another fluid into the wash chamber. The supply device comprises the supply pipe and, for example, one or more additional supply pipes. Each supply pipe is configured to receive and guide water toward the wash chamber. The supply pipe is, for example, fluidically connected to one or more of the additional supply pipes. The supply device also has a pump and the like.

[0013] The diversion of the supply pipe is, in particular, a pipe deflection by means of which the water flowing through the supply pipe is directed from the first direction to the second direction. This diversion can also be referred to as a flow deflection.

[0014] The supply pipe has a supply opening (i.e. an inlet) for supplying water to the supply pipe and a discharge opening (i.e. an outlet) for discharging water from the supply pipe towards the washing chamber.

[0015] The flow bushing is preferably inserted into the supply pipe, for example, at the discharge opening (i.e., the outlet). However, the flow bushing can also be inserted into the supply pipe, for example, at the feed opening (i.e., the inlet).

[0016] The flow bushing is attached to the feed pipe, for example, in a captive manner. The flow bushing is attached to the feed pipe, for example, with a material fit and / or a form fit. The flow bushing is, for example, injected into the feed pipe, glued to the feed pipe, welded to the feed pipe, and / or attached to the feed pipe by means of engagement elements.

[0017] The flow sleeve, for example, has a closed perimeter. The inner wall of the flow sleeve forms, in particular, a flow surface within the supply pipe, around which water flows through the supply pipe.

[0018] For example, the flow bushing at least partially covers the edge of the feed pipe.

[0019] The edge on the inner wall of the feed pipe is, in particular, an inner edge of the feed pipe. The edge is, for example, a sharp edge. For example only, the edge has an angle in the range of 100° and 80° and / or 95° and 85°, e.g., an angle of 90°.

[0020] The flow bushing is shaped such that its outer wall, in the region where it is arranged on the inner wall of the feed pipe, geometrically matches the inner wall of the feed pipe. In other words, the outer wall of the flow bushing and the inner wall of the feed pipe fit together precisely in the region where the flow bushing is arranged on the inner wall of the feed pipe. For example, in said region, the outer wall of the flow bushing and the inner wall of the feed pipe are arranged and / or attached to one another in a fluid-tight manner.

[0021] The curved section has a radius of curvature, which provides the deflection radius inside the feed pipe. The radius of curvature is, in particular, a mathematical value of a mathematical reciprocal of the curvature of the curved section. For example, the curved section has a locally constant curvature with the radius of curvature.

[0022] According to one embodiment, the household dishwasher has a spray device. The supply pipe is fluidically connected to the spray device and configured to supply water to the spray device. Furthermore, the deflector is arranged at an end of the supply pipe adjacent to the spray device.

[0023] This allows the deflection of the feed pipe (in this case also called “inlet pipe”) towards the inlet opening of the spray device to be designed with low flow losses.

[0024] In this case, the supply pipe (inlet pipe) is attached, for example, to the top basket of the dishwasher. The supply pipe is directly fluidically connected to the spray device.

[0025] The spray device has, for example, one or more spray arms.

[0026] According to a further embodiment, the flow bushing forms an outlet of the supply pipe for discharging water in the direction of the rinsing chamber.

[0027] If the supply pipe is fluidically connected to a spray device and configured to supply water to the spray device (inlet pipe), the flow bushing can form an outlet of the inlet pipe for discharging water to the spray device. In this case, the flow bushing is arranged at an end of the inlet pipe adjacent to the spray device.

[0028] According to a further embodiment, the first direction is a substantially horizontal direction of the household dishwasher, and the second direction is a substantially vertical direction of the household dishwasher.

[0029] Throughout the application, a "substantially horizontal direction" includes a strictly horizontal direction as well as a direction that deviates from the strictly horizontal direction by ± 10° or less, by ± 5° or less and / or by ± 1° or less.

[0030] Throughout this application, a "substantially vertical direction" includes a strictly vertical direction as well as a direction that deviates from the strictly vertical direction by ± 10° or less, by ± 5° or less and / or by ± 1° or less.

[0031] The first direction is, for example, a direction from a back wall of the dishwasher towards a door (when the door is closed) of the dishwasher.

[0032] The second direction is, for example, directed towards the bottom of the dishwasher.

[0033] According to a further embodiment, the supply pipe has a docking point for fluidly connecting a further supply pipe of the household dishwasher. Furthermore, the further supply pipe is configured to supply water to a spray device of the household dishwasher, and the supply pipe is arranged upstream of the further supply pipe with respect to a water flow direction.

[0034] This allows the deflection of the feed pipe (e.g. from the substantially vertical direction) towards the docking point (i.e. towards a substantially horizontal direction) for docking the (e.g. substantially horizontal) further feed pipe to be designed with low flow losses.

[0035] In this case, the additional supply pipe is, for example, the inlet pipe described above.

[0036] According to a further embodiment, the first direction is a substantially vertical direction of the household dishwasher, and the second direction is a substantially horizontal direction of the household dishwasher.

[0037] The first direction, for example, is directed from a floor of the dishwasher towards a ceiling of the dishwasher.

[0038] The second direction is, for example, from a rear wall of the dishwasher towards a door (when the door is closed) of the dishwasher.

[0039] According to a further embodiment, a common inner wall formed by an exposed portion of the inner wall of the feed tube and an inner wall of the flow bushing is smooth.

[0040] “Smooth” here means in particular without projections, without steps (i.e. continuous) and / or without edges.

[0041] A smooth inner wall allows for low hydraulic losses and high hydraulic efficiency.

[0042] According to a further embodiment, the feed pipe has a recess into which the flow bushing is inserted.

[0043] The flow bushing is, for example, fixed in the recess of the feed pipe by means of a material fit (e.g. injected, glued, welded) and / or a form fit (e.g. by means of engagement elements).

[0044] According to a further embodiment, the flow bushing has a closed periphery with a first peripheral portion and a second peripheral portion. Additionally, the supply tube has a recess into which the first peripheral portion of the flow bushing is inserted. Furthermore, the second peripheral portion of the flow bushing has the curved portion and is arranged at the edge of the supply tube.

[0045] The recess is, for example, a recess in a radial direction of the feed pipe.

[0046] The curved section of the flow bushing in the second circumferential section is, for example, attached to the inner edge of the feed pipe in such a way that the flow flows around the curved section instead of the edge.

[0047] For example, the inner wall of the feed pipe has a first inner wall section arranged parallel to the first direction. Furthermore, the inner wall of the feed pipe has a second inner wall section arranged parallel to the second direction. The flow bushing is arranged, for example, only in the region of the second inner wall section, so that the curved section continues the first inner wall section with a curve.

[0048] According to a further embodiment, a wall thickness of the flow bushing in the first circumferential portion is substantially equal to a depth of the recess in a radial direction of the feed pipe.

[0049] Herein, “substantially equal” includes exactly equal to the depth of the recess and a deviation of 10% or less, 5% or less and / or 1% or less of the depth of the recess.

[0050] Consequently, the flow bushing does not (essentially) protrude into the interior of the feed pipe at its first circumferential portion.

[0051] In embodiments, the wall thickness of the flow bushing in the first circumferential section may also be smaller than the depth of the recess in the radial direction of the feed tube.

[0052] According to a further embodiment, the feed pipe has at least one first engagement element, and the flow bushing has at least one second engagement element which is in engagement with the at least one first engagement element.

[0053] The flow bushing is thus fastened to the supply pipe by means of the at least one first and the at least one second engagement element, e.g., fastened in a captive manner.

[0054] For example, a locking connection is established by the at least one first engagement element and the at least one second engagement element. For example only, the at least one first engagement element has a recess, and the at least one second engagement element has a projection, e.g., a locking lug.

[0055] However, other types of mechanical connections between the flow bushing and the feed pipe are also possible.

[0056] According to a further embodiment, the feed pipe and / or the flow bushing is / are made of plastic.

[0057] Especially for feed pipes manufactured using the plastic injection molding process, the flow bushing used offers advantages with regard to the production of the feed pipe. This is because the feed pipe can be manufactured with the inner edge, which facilitates demolding, and at the same time, flow losses at the edge can be prevented because the flow bushing provides a deflection radius.

[0058] If both the feed pipe and the flow bushing are made of plastic, this has the advantage that both components have a similar temperature-dependent expansion behavior.

[0059] According to a further embodiment, the deflection radius of the flow bushing has a radius of curvature with a value in the range of 2.0 mm or more, 3.0 mm or more, 3.5 mm or more, 4.0 mm or more, 4.5 mm or more and / or 5.0 mm or more.

[0060] The larger the radius of curvature, the smaller the flow losses in the area of ​​the pipe deflection from the first direction to the second direction.

[0061] According to a further embodiment, the supply pipe has a supply opening for supplying water to the supply pipe, a first discharge opening for discharging water from the supply pipe toward the washing chamber, and a second discharge opening for discharging water from the supply pipe toward the washing chamber. Furthermore, the flow bushing is arranged at the first discharge opening. Furthermore, the second discharge opening, viewed in cross-section parallel to a flow direction of the water in the supply pipe, is arranged opposite the edge, and the flow bushing covers the second discharge opening.

[0062] In dishwashers in which a second discharge opening is provided in the area of ​​the deflection, but which is not used (blind discharge opening), the flow bushing can advantageously be designed in such a way that - in addition to providing the deflection radius for deflecting the water from the first direction to the second direction - it also closes the blind discharge opening.

[0063] Alternatively, the flow bushing may also be designed in such a way that it does not provide a deflection radius for deflecting the water from the first direction to the second direction and is designed exclusively to cover the blind discharge opening.

[0064] The flow bushing covers the second discharge opening in a particularly fluid-tight manner.

[0065] The second discharge opening is arranged in particular in the area of ​​the deflection.

[0066] According to a further embodiment, the flow bushing has a flow divider which is designed to guide the water flowing through the supply pipe into two separate, parallel pipe sections of the flow bushing.

[0067] By dividing the volume flow using the flow divider, the asymmetric flow occurring in the area of ​​the deflection from the first direction to the second direction can be influenced, so that the symmetry of the flow is increased.

[0068] If a second discharge opening is provided as described above, which is not a blind discharge opening (i.e. through which water is actually discharged towards the flushing chamber), then the flow divider can also be designed to influence, e.g., to determine, the ratio of the quantities of water discharged to the first discharge opening and to the second discharge opening.

[0069] Further possible implementations of the invention also include combinations of features or embodiments described above or below with respect to the exemplary embodiments not explicitly mentioned. In this case, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the invention.

[0070] Further advantageous embodiments and aspects of the invention are the subject of the dependent claims and the exemplary embodiments of the invention described below. The invention will be explained in more detail below using preferred embodiments with reference to the accompanying figures. Fig. 1 shows a schematic perspective view of an embodiment of a household dishwasher; Fig. 2 shows a supply of water to a spray device of the household dishwasher via a plurality of interconnected supply pipes according to one embodiment; Fig. 3 shows a section of a feed pipe from Fig. 2, which is fluidly connected to the spray device according to an embodiment, wherein a flow bushing is inserted into the supply pipe; Fig. 4 shows a flow bushing made of Fig. 3 in cross section along line IV-IV; Fig. 5 illustrates a mechanical connection of the flow bushing with the feed pipe from Fig. 3 according to one embodiment; Fig. 6 shows another embodiment of the feed pipe with the flow bushing; and Fig. 7 shows yet another embodiment of the feed pipe with the flow bushing.

[0071] In the figures, identical or functionally equivalent elements have been given the same reference numerals unless otherwise stated.

[0072] The Fig. Figure 1 shows a schematic perspective view of an embodiment of a household dishwasher 1. The household dishwasher 1 comprises a washing container 2, which can be closed, in particular watertight, by a door 3. For this purpose, a sealing device can be provided between the door 3 and the washing container 2. The washing container 2 is preferably cuboid-shaped. The washing container 2 can be arranged in a housing of the household dishwasher 1. The washing container 2 and the door 3 can form a washing chamber 4 for washing dishes.

[0073] Door 3 is in the 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. With the help of the door 3, a loading opening 6 of the washing container 2 can be closed or opened. The washing container 2 has a base 7, a ceiling 8 arranged opposite the base 7, a rear wall 9 arranged opposite the closed door 3 and two side walls 10, 11 arranged opposite one another. The base 7, the ceiling 8, the rear wall 9 and the side walls 10, 11 can be made, for example, from a stainless steel sheet. Alternatively, the base 7 can, for example, be made from a plastic material.

[0074] The household dishwasher 1 further comprises at least one dishware receptacle 12 to 14. Preferably, several, for example three, dishware receptacles 12 to 14 can be provided, wherein the dishware receptacle 12 can be a lower dishware receptacle or a lower basket, the dishware receptacle 13 can be an upper dishware receptacle or an upper basket, and the dishware receptacle 14 can be a cutlery drawer. Fig. As further shown in Figure 1, the dishware receptacles 12 to 14 are arranged one above the other in the washing container 2. Each dishware receptacle 12 to 14 can be selectively moved into or out of the washing container 2. In particular, each dishware receptacle 12 to 14 can be pushed or moved into the washing container 2 in an insertion direction E and pulled or moved out of the washing container 2 in an extension direction A, opposite to the insertion direction E.

[0075] Fig. 2 shows a supply device 15 for supplying water 16 to a spray device 17 or a spray arm 27 of the household dishwasher 1 from Fig. 1.

[0076] The feed device 15 has a plurality of fluid-connected feed pipes 18, 19, 20. For example, the feed device 15 has a first feed pipe 18 which extends vertically (in the z-direction in Fig. 2) and from the floor area 7 ( Fig. 1) of the household dishwasher 1 along its rear wall 9 ( Fig. 1). Furthermore, the feed device 15 has, for example, a second feed pipe 19 which is fluidically connected to the first feed pipe 18 (e.g. directly). The second feed pipe 19 has a deflection 21 from the vertical direction (positive z-direction) into the horizontal direction (positive y-direction), i.e., at an angle of 90°. The second feed pipe 19 has, for example, a docking point 22 for docking (e.g., releasably mechanically connecting) a third feed pipe 20. The third feed pipe 20 of the feed device 15 is fluidically connected to the second feed pipe 19 (e.g., releasably) at the docking point 22. For example, the third feed pipe 20 is fastened to the dishware holder 13, e.g., the upper basket 13. Furthermore, the third supply pipe 20 is fluidly connected to the second supply pipe 19 at the docking point 22 when the dishware holder 13, e.g. the upper basket 13, is in a retracted state. In addition, the third supply pipe 20 isthen detached and spaced from the docking point 22 and from the second feed pipe 19 when the dishware holder 13, e.g., the upper basket 13, is in an extended state. The third feed pipe 20 extends predominantly horizontally toward the door 3 (. Fig. 1) in the closed state of the door 3 (ie along the positive y-direction) and has a deflection 23 from the horizontal direction R1 (ie positive y-direction) into the vertical direction R2 (ie negative z-direction, towards the floor 7 in Fig. 1). The deflection 23 is also, for example, a deflection at an angle of 90°. The reference symbol S indicates a flow direction of the water in the first, second, and third supply pipes 18, 19, 20.

[0077] In Fig. 3 is a section III in Fig. 2 shown in detail. In Fig. 3 shows a section of the second supply pipe 20 (also called the inlet pipe) and a section of the spray device 17. The spray device 17 has a connecting section 24, which is connected (mechanically connected and fluidly connected) to an end section 25 of the second supply pipe 20. For example, a clamping device 26 is provided, by means of which the connecting section 24 and the end section 25 are connected to one another. The spray device 17 also has, for example, one or more spray arms 27.

[0078] The deflection 23 of the second feed pipe 20 is in the example of Fig. 3 is arranged at an end 28 of the second feed pipe 20 arranged adjacent to the spray device 17.

[0079] The second feed pipe 20 is made of plastic, for example by injection molding.

[0080] The second feed pipe 20 has an edge 29 on its inner wall 30 in the region of the deflection 23. The edge 29 is produced, for example, by the injection molding process. The edge 29 has, for example, an angle α of 90°. The inner wall 30 has, for example, a first inner wall section 31, which is arranged along the first direction R1 (positive y-direction). Furthermore, the inner wall 30 has, for example, a second inner wall section 32, which is arranged along the second direction R2 (negative z-direction). The edge 29 is formed at the intersection point of the two inner wall sections 31, 32.

[0081] To avoid large flow losses at the sharp edge 29 of the second supply pipe 20, the household dishwasher 1, in particular the supply device 15, has a flow bushing 33 inserted into the second supply pipe 20. The flow bushing 33 has, for example, a closed circumference U ( Fig. 4).

[0082] The flow bushing 33, for example, is also made of plastic.

[0083] The flow bushing 33 has an outer wall 34 whose shape is adapted to the edge 29. Furthermore, the flow bushing 33 has an inner wall 35 with a curved section 36, which provides a deflection radius K in the interior I of the second feed pipe 20. The deflection radius K of the flow bushing 33 has, for example, a radius of curvature with a value in the range of 2.0 mm or more, 3.0 mm or more, 3.5 mm or more, 4.0 mm or more, 4.5 mm or more, and / or 5.0 mm or more.

[0084] The flow bushing 33 forms in the example of Fig. 3 in particular an outlet 37 of the second supply pipe 20. Through the outlet 37 (ie the outlet opening 37) the water 16 guided through the second supply pipe 20 ( Fig. 2) to the spray device 17.

[0085] The flow bushing 33 is arranged, for example, only in the region of the second inner wall section 32 of the inner wall 30 of the second feed pipe 20. However, the first inner wall section 31 of the inner wall 30 of the second feed pipe 20 is, for example, free of the flow bushing 33. The curved section 36 of the flow bushing 33 forms, for example, an extension of the first inner wall section 31. The curved section 36 of the flow bushing 33, for example, continues the first inner wall section 31 without gaps and / or steps. In particular, a common inner wall 38 formed by an exposed section 31 of the inner wall 30 of the second feed pipe 20 and an inner wall 35 of the flow bushing 33 is smooth and without gaps, steps, edges, or the like.

[0086] The second supply pipe 20 has, for example, a recess 39 into which the flow bushing 33 is inserted. In particular, the flow bushing 33 has the closed circumference U ( Fig. 4), which has a first circumferential portion 40 and a second circumferential portion 41. The first circumferential portion 40 ( Fig. 4) the flow bushing 33 is inserted into the recess 39 ( Fig. 3) of the second feed pipe 20. In addition, the second circumferential section 41 ( Fig. 4) the flow bushing 33 the curved section 36 ( Fig. 4). The second circumferential section 41 of the flow bushing 33 is also arranged on the edge 29 of the second feed tube 20 and on the second inner wall section 32 of the second feed tube 20. A wall thickness D (wall thickness D) of the flow bushing 33 in the first circumferential section 40 is in particular equal to a depth T of the recess 39 in a radial direction R3 of the second feed tube 20.

[0087] The flow bushing 33 is attached to the second supply pipe 20, in particular, it is secured against loss. By way of example only, Fig. 5 a locking connection 42 is shown. As in Fig. 5, the second feed pipe 20 has at least one first engagement element 43, e.g., a recess 44, in the region of the recess 39. In addition, the flow bushing 33 has at least one second engagement element 45, e.g., a locking lug 46. The at least one first and the at least one second engagement element 43, 45 are engaged with one another. For example, the at least one locking lug 46 is locked into the at least one recess 44. For example, a plurality of first and second engagement elements 43, 45 are provided, which extend over the circumference U ( Fig. 4) are evenly distributed.

[0088] Although not shown in the figures, the flow bushing 33 can also be inserted into the second feed pipe 21 ( Fig. 2) be inserted in the area of ​​the deflection 21, e.g. adjacent to the docking point 22.

[0089] In Fig. 6 shows a further embodiment of a feed pipe 20' with a flow bushing 33'. In the following, only differences from the embodiment in Fig. 3 described.

[0090] The second feed pipe 20' (as well as the second feed pipe 20) has a feed opening 47 ( Fig. 2) for supplying water 16 to the supply pipe 20, 20'. The second supply pipe 20' (as well as the second supply pipe 20) also has a first discharge opening 48 for discharging water 16 from the supply pipe 20, 20' to the spray device 17. The second supply pipe 20' in Fig. 6 has - in contrast to the second feed pipe 20 in Fig. 3 - a second discharge opening 49 for discharging water 16 from the supply pipe 20' to the spray device 17'. Furthermore, the flow bushing 33' is arranged at the first discharge opening 48. Furthermore, the second discharge opening 49, viewed in cross-section parallel to the flow direction S of the water 16 in the supply pipe 20', is arranged opposite the edge 29'. Furthermore, the flow bushing 33' covers the second discharge opening 49. Thus, a second discharge opening 49 that is not being used can be covered with the flow bushing 33'.

[0091] In Fig. 7 shows a further embodiment of a feed pipe 20" with a flow bushing 33". In the following, only differences to the embodiment in Fig. 3 described.

[0092] The flow bushing 33" has a flow divider 50. The flow divider 50 is designed to guide the water 16 flowing through the supply pipe 20" into two separate, parallel pipe sections 51, 52 of the flow bushing 33". This allows for greater symmetry of flow in the supply pipe 20" to be achieved.

[0093] Although the present invention has been described using exemplary embodiments, it can be modified in many ways. Reference symbols used: 1 household dishwasher 2 rinsing containers 3 Door 4 Washing compartment 5 swivel axis 6 Loading opening 7 Floor 8 Ceiling 9 Rear wall 10 Side wall 11 Side wall 12-14 Dishwasher waste holder 15 Feeding device 16 Water 17, 17' spray device 18 Feed tube 19 Feed tube 20 Feed tube 20', 20" feed pipe 21 Deflection 22 Docking point 23 Deflection 24 connecting section 25 final section 26 clamping device 27 Spray arm 28 End 29, 29' edge 30 interior wall Section 31 Section 32 33 Flow bushing 33', 33" flow bushing 34 exterior wall 35 interior wall Section 36 37 Outlet 38 interior wall 39 recess 40 circumferential section 41 circumferential section 42 Snap connection 43 engagement element 44 recess 45 engagement element 46 locking lug 47 Feed opening 48 discharge opening 49 Discharge opening 50 flow dividers 51 pipe section 52 pipe section A Extension direction α angle D Wall thickness E Insertion direction I Interior K Deflection radius R1, R1' direction R2, R2' direction R3 direction S direction T Depth U circumference

Claims

[1] Household dishwasher (1) with a feed pipe (20) for feeding water (16) in the direction of a washing chamber (4) and with a flow bushing (33) inserted into the feed pipe (20), wherein the feed pipe (20) has a deflection (23) from a first direction (R1) into a second direction (R2) and, in a region of the deflection (23), an edge (29) on its inner wall (30), and wherein the flow bushing (33) has an outer wall (34) whose shape is adapted to the edge (29), and an inner wall (35) with a curved section (36) which provides a deflection radius (K) in the interior (I) of the feed pipe (20). [2] Household dishwasher according to claim 1, comprising a spray device (17), wherein the supply pipe (20) is fluidly connected to the spray device (17) and is arranged to supply water (16) to the spray device (17), and the deflection (23) is arranged at an end (28) of the supply pipe (20) arranged adjacent to the spray device (17). [3] Household dishwasher according to claim 1 or 2, wherein the flow bushing (33) forms an outlet (37) of the supply pipe (20) for discharging water (16) in the direction of the washing chamber (4). [4] Household dishwasher according to one of claims 1-3, wherein the first direction (R1) is a substantially horizontal direction of the household dishwasher (1), and the second direction (R2) is a substantially vertical direction of the household dishwasher (1). [5] Household dishwasher according to claim 1, wherein a further supply pipe (19) has a docking point (22) for fluidly connecting the supply pipe (20) of the household dishwasher (1), the supply pipe (20) is arranged to supply water (16) to a spray device (17) of the household dishwasher (1), and the further supply pipe (19) is arranged upstream of the supply pipe (20) with respect to a flow direction (S) of the water (16). [6] A household dishwasher according to claim 1 or 5, wherein the first direction (R1') is a substantially vertical direction of the household dishwasher (1), and the second direction (R2') is a substantially horizontal direction of the household dishwasher (1). [7] Household dishwasher according to one of claims 1-6, wherein a common inner wall (38) formed by an exposed portion (31) of the inner wall (30) of the feed pipe (20) and an inner wall (35) of the flow bushing (33) is smooth. [8] Household dishwasher according to one of claims 1-7, wherein the feed pipe (20) has a recess (39) into which the flow bushing (33) is inserted. [9] Household dishwasher according to one of claims 1-8, wherein the flow bushing (33) has a closed circumference (U) with a first circumferential portion (40) and a second circumferential portion (41), the feed pipe (20) has a recess (39) into which the first circumferential portion (40) of the flow bushing (33) is inserted, and the second circumferential portion (41) of the flow bushing (33) has the curved portion (36) and is arranged on the edge (29) of the feed pipe (20). [10] Household dishwasher according to claim 9, wherein a wall thickness (D) of the flow bushing (33) in the first circumferential portion (40) is substantially equal to a depth (T) of the recess (39) in a radial direction (R3) of the feed pipe (20). [11] Household dishwasher according to one of claims 1-10, wherein the feed pipe (20) has at least one first engagement element (43), and the flow bushing (33) has at least one second engagement element (45) which is in engagement with the at least one first engagement element (43). [12] Household dishwasher according to one of claims 1-11, wherein the feed pipe (20) and / or the flow bushing (33) is / are made of plastic. [13] Household dishwasher according to one of claims 1-12, wherein the deflection radius (K) of the flow bushing (33) has a radius of curvature with a value in the range of 2.0 mm or more, 3.0 mm or more, 3.5 mm or more, 4.0 mm or more, 4.5 mm or more and / or 5.0 mm or more. [14] Household dishwasher according to one of claims 1-13, wherein the feed pipe (20') comprises: a supply opening (47) for supplying water (16) to the supply pipe (20'), a first discharge opening (48) for discharging water (16) from the supply pipe (20') towards the rinsing chamber (4), and a second discharge opening (49) for discharging water (16) from the supply pipe (20') in the direction of the rinsing chamber (4), wherein the flow bushing (33') is arranged at the first discharge opening (48), the second discharge opening (49), seen in cross-section parallel to a flow direction (S) of the water (16) in the supply pipe (20'), is arranged opposite the edge (29), and the flow bushing (33') covers the second discharge opening (49). [15] Household dishwasher according to one of claims 1-14, wherein the flow bushing (33") has a flow divider (50) which is designed to guide the water (16) flowing through the supply pipe (20") into two separate, parallel pipe sections (51, 52) of the flow bushing (33").

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