Dishwasher, in particular domestic dishwasher

Abstract

The invention relates to a dishwasher (1), in particular a domestic dishwasher, at least comprising: a washing container (2) for receiving washing items, which washing container comprises a plurality of wall parts (7 to 11), preferably made of metal, and which is provided on the front side with a loading opening (6) for loading the washing items, which loading opening can be closed at least temporarily by a container door (3), at least the right side container side wall (11), the container top (8) and the left side container side wall (10) form a container cover (15), the container cover and the at least cavity-shaped container bottom (7) form a container frame (16), the container rear wall (9) is attached, in particular welded, to the rear side of the container frame (16), and the container rear wall (9) comprises at least two, in particular flat, container rear wall elements (9.1, 9.2), preferably at least three, in particular straight, container rear wall elements (9.1, 9.2, 9.3), in particular at least four, in particular straight, container rear wall elements (9.1 to 9.4), which are connected to at least one adjacent container rear wall element (9.1, 9.2; 9.3) at least in some sections along a connecting region (VB), in particular a connecting line (VL), by means of at least one joining method; 9.1, 9.2, 9.3, 9.1, 9.2, 9.3; 9.1 to 9.4), in particular by welding.

Description

TECHNICAL FIELD

[0001] The invention relates to a dishwasher, in particular a domestic dishwasher, having a washing tub, which comprises a plurality of wall parts and which is provided at a front side with a loading opening for loading washing items, which loading opening can be closed at least temporarily by a tub door. BACKGROUND

[0002] Known dishwashers, in particular domestic dishwashers, generally have a washing tub which is configured as a work space for accommodating washing items to be cleaned, which washing tub can be closed, in particular water-tightly, by a tub door. The washing tub is preferably cuboid and can be arranged in a housing of the dishwasher, in particular the domestic dishwasher. Furthermore, the washing tub forms, together with the tub door, a washing space for washing the washing items. The tub door can be closed or opened by pivoting about a pivot axis provided at a lower end of the tub door. By means of the tub door, a loading opening of the washing tub can be closed or opened.

[0003] Such a dishwasher, in particular a domestic dishwasher, is known, for example, from the reference DE 10 2015 216 228 A1. The dishwasher, in particular the domestic dishwasher, has a washing tub which comprises a plurality of wall parts and which is provided at a front side with a loading opening for loading washing items, which loading opening can be closed at least partially by a tub door, wherein a right-hand tub side wall, a tub top and a left-hand tub side wall are composed of metal, which in a stretched state constitute a preferably flat press part and are then bent into a U shape, wherein a concave tub bottom composed of metal is a deep-drawn part composed of preferably austenitic steel, and wherein a tub rear wall attached to a rear side of a tub cover composed of metal and of the concave tub bottom composed of metal is configured as a preferably flat press part. The two tub side walls of the tub cover composed of metal can be connected to one another at their respective lower wall edges with the concave tub bottom composed of metal by means of external interfaces, preferably form-fittingly. Furthermore, the respective external interfaces can comprise form-fitting connections, in particular dynamic or static folding, or roll seam welds.

[0004] Reference EP 2 185 057 B1 discloses a dishwasher having at least a washing container for accommodating items to be cleaned, which is formed at least section-wise from a metal material, in particular from stainless steel, wherein the washing container is composed of at least two different metal materials. In the area of the washing container in which particularly strong formings and / or attachment weld seams are provided, the metal material is an austenitic metal, wherein this area of the washing container is a section of the jacket plate of the washing container facing the front side of the washing container jacket plate and the container bottom plate of the washing container. Furthermore, in the area of the washing container which is not subjected to such strong formings or is not welded, the metal material is a ferritic metal, wherein this area of the washing container is a section of the jacket plate of the washing container facing away from the front side of the washing container jacket plate.

[0005] Reference DE 69 24 403 U discloses a washing container for a dishwasher, which has a container bottom-top wall and side walls composed of metal sheets which are connected to one another. The respective side wall is connected to the container bottom wall and the top wall by means of a hem of the adjacent edges. The vertical side wall composed of one metal sheet is thus also in the installed state in the shape of a so-called "lying U".

[0006] Reference DE 80 31 660 U1 also discloses a washing container for a dishwasher, which has a container bottom-top wall and side walls composed of metal sheets which are connected to one another. The respective side wall is connected to the container bottom and the top wall by means of a hem of the adjacent edges. The three vertical side walls composed of one metal sheet are thus also in the installed state in the shape of a so-called "lying U".

[0007] The design of the vertical side walls of the washing container in the shape of a so-called "lying U" in the installed state leads to serious disadvantages in terms of fastening, i.e. there is no rear wall flange for absorbing forces which can act on the washing container, for example during transport of the dishwasher or during storage. A second frame component must therefore usually be attached in the rear region of the dishwasher as a fixing and force transmission element. Additional manufacturing and installation costs are incurred by means of said second frame component.

[0008] In the known washing containers of dishwashers, corrosion forms in the small gaps, for example between the container bottom and the container rear wall, in the severely deformed geometry, in the complex interfaces with adjacent components and in the hot joining technology sections, for example roll seam welds, due to the materials used, i.e. the washing liquor, in particular the washing lye, which is not drained off. The formation of corrosion can likewise significantly shorten the service life of the dishwasher due to possible leaks, can negatively influence the properties of the washing liquor and can lead to visible color changes in the washing container, in the worst case to color changes of the items to be washed. SUMMARY

[0009] Against this background, the object of the present application is to provide a dishwasher, in particular a domestic dishwasher, having an improved wash container.

[0010] In order to achieve the object according to the application, a dishwasher, in particular a domestic dishwasher, is proposed, comprising a wash container for accommodating wash items, which wash container comprises a plurality of wall parts, preferably of metal, and which wash container is provided with a loading opening at the front side for loading wash items, which loading opening can be closed at least partially by means of a container door. At least the right-hand container side wall, the container top and the left-hand container side wall form a container mantle, wherein the container mantle and at least the concave container bottom form a container frame. The container rear wall is attached, in particular welded, to the rear side of the container frame. Furthermore, the container rear wall comprises at least two, preferably at least three, in particular at least four, container rear wall elements, which are connected, in particular welded, to at least one adjacent container rear wall element at least section-wise along a connection region, in particular a connection line, by means of at least one joining method.

[0011] By providing at least two container rear wall elements, the respective container rear wall element can be optimally designed in terms of material, processing, area size, arrangement, orientation, configuration, in particular shape, and element thickness, with regard to the respective operating requirements. By means of the selection of the exemplary features, it is possible to process-reliably and durably avoid corrosion and to continuously ensure the functionality of the dishwasher. Furthermore, existing production and / or installation facilities can also be used when implementing a container rear wall comprising at least two, preferably planar, container rear wall elements. As a result, cost advantages are achieved in the investment required for the corresponding machines and facilities. Furthermore, the proposed connection, in particular welding, of the container rear wall elements is known in the specialist field, so that a wash container for accommodating wash items, which is protected against leakage of wash liquor, in particular wash lye, can be produced without problems.

[0012] According to the application, therefore, a container rear wall of a wash container of a dishwasher is provided, which container rear wall comprises at least two, preferably planar, container rear wall elements. It is therefore also possible to provide a container rear wall comprising three, four or more container rear wall elements, wherein each individual container rear wall element can have selected features, such as material, processing, area size, arrangement, orientation, configuration, in particular shape, and element thickness.

[0013] In the tests carried out, the following exemplary container rear walls have proved to be advantageous:

[0014] - a container rear wall having two planar container rear wall elements, comprising:

[0015] a vertically lowermost container back wall element composed of austenitic steel and a vertically arranged thereabove, in particular upper, further container back wall element composed of ferritic steel,

[0016] horizontal alignment of the two container back wall elements, which have a wall thickness of, for example, 0.4 mm each;

[0017] a container back wall having three planar container back wall elements, comprising

[0018] a vertically lowermost container back wall element composed of austenitic steel and having a wall thickness of, for example, 0.4 mm;

[0019] a vertically arranged thereabove, in particular upper, first further vertically arranged above further first container back wall element composed of ferritic steel and having a wall thickness of, for example, 0.3 mm; and

[0020] a further second container back wall element (a "noise protection element") arranged at least partially outside the, in particular upper, further first container back wall element, in particular outside the, in particular upper, container back wall element, composed of ferritic steel and having a wall thickness of, for example, 0.3 mm;

[0021] a container back wall having four planar container back wall elements, comprising

[0022] a vertically lowermost container back wall element composed of austenitic steel and having a wall thickness of, for example, 0.4 mm;

[0023] a further first container back wall element ("sealing element") arranged vertically thereabove, composed of ferritic steel and having a wall thickness of, for example, 0.3 mm;

[0024] a further second container back wall element ("noise protection element") arranged vertically thereabove, composed of ferritic steel and having a wall thickness of, for example, 0.6 mm; and

[0025] a further third container back wall element ("second sealing element") arranged vertically thereabove, composed of ferritic steel and having a wall thickness of, for example, 0.3 mm.

[0026] It is to be understood that the features mentioned are merely exemplary. The features can obviously vary. Thus, for example, the respective wall thicknesses can be between 0.25 mm and 0.60 mm.

[0027] In the context of the present disclosure, the term "container cover" is understood to mean an assembly consisting at least of a right-hand container side wall, a container lid and a left-hand container side wall. Furthermore, in the context of the present disclosure, the term "container frame" is understood to mean an assembly formed at least by the container cover and a concave container bottom.

[0028] It is proposed in a first embodiment that the connection region, in particular the connection line, extends approximately horizontally, in particular horizontally.

[0029] Due to this extension and the material selection of the vertically lowermost container rear wall element of the container rear wall, it is technically possible and also cost- appropriate to ensure that corrosion phenomena cannot occur in the critical region between the container bottom and the container rear wall, even in the presence of rinsing liquor, in particular rinsing lye. For example, in the case of a container rear wall element of the container rear wall in the container width, there is an approximately horizontal, in particular horizontal, extension of the connection region, in particular the connection line.

[0030] The vertically lowermost container rear wall of the container rear wall can of course also be composed of a plurality of possibly different wall sub-elements. The differences can be, for example, material, processing, area size and / or element thickness.

[0031] The connection region, in particular the connection line, can also have an approximately vertical, in particular vertical, extension, depending, inter alia, on the dimensions and / or placement of the container rear wall elements of the container rear wall. Furthermore, a combination of an approximately horizontal, in particular horizontal, extension of the connection region, in particular the connection line, and an approximately vertical, in particular vertical, extension of the connection region, in particular the connection line, is also possible.

[0032] In a further embodiment, it is proposed that the joining method is a welding method with the production of a weld seam, in particular laser welding with the production of a laser weld seam, and / or the weld seam, in particular the laser weld seam, has a welding root formed on the outer side of the rinsing container.

[0033] When using a welding method, in particular laser welding with the production of a laser weld seam, it is possible to achieve the tightness of the rinsing container in a technically simple manner and also to ensure the tightness permanently. The most common joining methods, i.e. riveting, screwing and clamping, for example, cannot permanently ensure the tightness of the rinsing container, even when using additional sealing means, i.e. silicone, for example.

[0034] The formation of the welding root on the outer side of the rinsing container has the advantage that the visibility of the weld seam on the inner side of the rinsing container is low. Users who load and unload the dishwasher with the naked eye, in particular taking into account the light conditions in the rinsing container, cannot easily identify such a weld seam. From a technical point of view, as small a weld seam as possible on the inner side of the rinsing container is advantageous, in particular with regard to corrosion protection.

[0035] It is proposed in a further embodiment that the weld seam, in particular the laser weld seam, has a joint surface which is preferably formed on the inside of the rinsing container, and that the joint surface is post-treated, preferably passivated, in particular laser passivated.

[0036] Forming the joint surface on the inside of the rinsing container provides the already mentioned technical advantages. In particular because the tendency to initially form corrosion is effectively avoided, post-treating the joint surface, preferably passivating, in particular laser passivating, also has considerable advantages.

[0037] It is proposed in a further embodiment that the vertically lowermost container rear wall element has a height in the range from 10 mm to 50 mm, preferably from 15 mm to 40 mm, in particular from 20 mm to 30 mm, from the line of contact with the concave container bottom.

[0038] The mentioned height range of the vertically lowermost container rear wall element of the container rear wall facilitates achieving the advantages according to the application. And this is independent of the amount of rinsing liquor, in particular rinsing underpressure, and the chosen rinsing program.

[0039] It is proposed in a further embodiment that the concave container bottom and the vertically lowermost container rear wall element are formed from an austenitic steel, i.e. for example WNr. 1.4301. Austenitic steels are standardized in DIN EN ISO 3506-1, and the austenitic steel group also includes the materials 1.4401 (X5CrNiMo17-12-2, AISI 316), 1.4404 (X2CrNiMo17-12-2, AISI 316L) and 1.4571 (X6CrNiMoTi17-12-2, AISI 316Ti). The list of materials is merely exemplary and not exhaustive. One fundamental property of austenitic steels is their corrosion resistance, which is required in the context of the application, in particular in the critical region between the container bottom and the container rear wall. In the mentioned regions, therefore, high-quality steels are used which meet the high requirements of the field.

[0040] It is proposed in a further embodiment that at least one further container rear wall element, the right-hand container side wall, the container top and the left-hand container side wall are formed from a ferritic steel, i.e. for example WNr. 1.4016, and / or that the container rear wall is welded to the rear side of the container frame by means of laser welding or roll seam welding.

[0041] Ferritic steels are standardized in DIN EN 10151 and belong to the chromium steel group and, in contrast to the austenitic steel group, are strongly magnetic. This is due to their body-centered cubic crystal structure. Ferritic steels are used in particular in the food and beverage industry. Ferritic steels according to WNr. 1.4016 can be relatively easily processed and are also cost-effective. The steel is also resource-saving since no nickel is used.

[0042] Due to this special circumferential welding, the sealing means, in particular silicone, which has hitherto been used to seal the container rear wall and the container frame, can be completely dispensed with. Furthermore, since the particularly circumferential welding between the container rear wall and the container frame can transmit greater forces than a connection by means of spot welding, a lower equipment transport damage can be achieved.

[0043] Laser welding (EN ISO 4063: Process 52) is mainly used for welding that has to be spliced with high welding speeds, narrow and elongated weld seam shapes and with low heat distortion. Laser welding or laser beam welding generally does not require the delivery of additional material. The laser radiation is focused by means of optical means. The workpiece surface of the abutting edges, i.e. the splice joint of the components to be welded, is in the immediate vicinity of the focal point of the optical means (within the focal point). The position of the focal point relative to the workpiece surface (above or below) is an important welding parameter and also determines the welding depth. The diameter of the focal point is usually a few tenths of a millimeter, whereby a very high energy concentration is formed when the laser used has a typical power of several kilowatts. By absorbing the laser power, the temperature on the workpiece surface rises extremely quickly above the metal melting point, so that a melt is formed. Due to the high cooling speed of the weld seam, depending on the material, the weld seam becomes very hard and usually loses its toughness.

[0044] Roll seam welding is a resistance welding method and directly derived from spot welding. The electrode consists of a copper roller. The rollers running above and below the sheet to be welded press the sheets together and at the same time transmit the welding current. Roll seam welding is limited to the splicing of thin sheets. Different seam geometries from overlapping seams to seams with butt joints are possible. In contrast to spot welding, roll seam welding involves a continuous method - at least in terms of the relative movement of the electrode and the workpiece. The rollers run on the sheets and do not need to be opened for the feed. The electrode wear is therefore also lower. The weld spots are produced by current pulses. The higher the pulse frequency, the closer the weld spots are, with the same feed. If the welding current flows uninterrupted, a sealing seam can also be produced.

[0045] In another embodiment it is proposed that the two container side walls of the container cover are connected to one another at their respective lower wall edges by means of an external interface with the concave container bottom, preferably form-fittingly, in particular by dynamic or static folding or by roll seam welding.

[0046] Both form-fitting connection types are characterized by a high degree of tightness and temporal stability.

[0047] Folding is a technique in sheet metal processing, in which the sheet metal edge is bent in order to achieve edge stiffening. As a combination method, flanging can also be used in order to create a connection with several components by means of re-forming. Here, components made of the same or different materials can be connected, for example a sheet metal with plastic. If a roller system is used when folding, preferably a roller system guided by a standard industrial robot system, this is referred to as roller folding or dynamic folding. If, however, static tools are used when folding, this is referred to as static folding.

[0048] In another embodiment it is proposed that the two outer interfaces, the container cover and the concave container bottom each have a 90° outwardly bent edge in the region of their rear side, i.e. in the region facing away from the container door of the dishwasher.

[0049] This bent edge gives the two outer interfaces a high degree of strength and stability at relatively low manufacturing costs.

[0050] In another embodiment it is proposed that the container cover in the stretched state constitutes a preferably flat press part and is then bent in a U shape and that the container rear wall attached to the rear side of the container frame, in particular welded, constitutes a preferably flat press part.

[0051] This washing container is characterized by a production facility which is simpler, more flexible and more cost-effective as a result of the possibility of using extrusion and tooling technology. In direct comparison with the conventional expansion machine technology, a clear cost advantage in terms of investment is obtained therefrom.

[0052] The production facility is also simpler to manufacture and thus more cost-effective. In terms of production quality, better tolerance compensation of the wall parts is possible in comparison with the "horizontal U" as a known basic shape of a washing container. Since only the concave container bottom made of metal is a deep-drawn part, the material costs are also lower in direct comparison with the "horizontal U" as a known basic shape of a washing container. In the "horizontal U", the container top made of metal is also a deep-drawn part, which ultimately means more metal sheet waste.

[0053] Furthermore, the container rear wall flange known from the extender technology and universally proven remains. A better integration option in the existing platform concept is obtained therefrom; the proven dishwasher additional components, i.e. for example heat exchangers, side walls, etc., are adopted to the design as far as possible and completely.

[0054] As a result of the use of a container rear wall made of metal, preferably constituted as a flat press part, the second frame part as a fixing and force transmission element in the dishwasher rear region can be completely dispensed with, and thus material costs can be saved.

[0055] In another embodiment it is proposed that the two container side walls of the container cover are connected to one another, in particular welded to one another, at the respective lower wall edges of the container side walls to the concave container base by a joining method.

[0056] Such a joining method, in particular such a welding, for the container cover and the concave container base is in principle characterized by a simple, but very reliable connection.

[0057] In another embodiment it is proposed that the container cover in the stretched state constitutes a preferably flat container jacket plate, the concave container base in the stretched state constitutes a preferably flat container base plate, the two container plates after the container plate connection, in particular welding, are formed into a container rim in an expander, and the container rear wall, which is attached to the rear side of the container rim, in particular welded, is configured as a preferably flat press-in part.

[0058] The expander technique is a common and proven method in the manufacture of a rinse container for a dishwasher, in particular a domestic dishwasher.

[0059] In another embodiment it is proposed that the rinse container comprises a plurality of wall parts, which preferably constitute flat container plates before the production of the rinse container.

[0060] The manufacture of the rinse container from a plurality of wall parts, in particular independent wall parts, in principle allows the manufacture of the rinse container in a technically and process-technically simple manner by means of known and proven manufacturing methods.

[0061] In general, the rinse container can be provided with a U-shaped, downwardly open and constituting a front of the rinse container frame part, which is preferably cohered to the container cover consisting of metal, preferably form-fittingly, by means of riveting, in particular hot riveting, which is spliced into the concave container base consisting of metal, and which accommodates a door seal in a trough-shaped profile. Such a frame part is known, for example, from the reference WO 2007 / 048697 A1; the disclosure related thereto of the reference is hereby incorporated into the subject matter of the present disclosure. The frame part preferably comprises plastic, in particular glass fiber reinforced polypropylene, and is fixed at least at the container cover of the rinse container consisting of metal by means of hot riveting technology. The same frame part can also be used for a rinse container with a concave metal base or a rinse container with a concave plastic base.

[0062] The frame part, which preferably comprises at least one plastic, can also form a front of the interior space of the rinse container, so that the container cover of the rinse container consisting of metal is partially covered on the inside by the frame part, and the rinse container obtains a high degree of tightness.

[0063] Furthermore, the height of the two container side walls made of metal, the container rear wall made of metal and the frame part can be chosen such that the dishwasher has an installation height in the range of about 86.5 cm, about 81.5 cm, about 77.5 cm, about 70 cm, about 60 cm or about 45 cm. At the installation heights mentioned, the dishwasher part has a worktop on the upper side. With the increasing average height of the people, the increasing sensitivity to posture injuries and the increasing tendency to cause pain injuries to the back of the people, the tendency to tall dishwashers can increase.

[0064] In another embodiment it is proposed that at least one reinforcing element of the preferred rear wall width is provided at least in the region above the container rear wall. The "rear wall width" means that the length of the reinforcing element approximately or equally corresponds to or is the width of the container rear wall.

[0065] The reinforcing element of the preferred rear wall width, which can be multipart, is preferably a reinforcing profile and in particular a reinforcing rail. The possible multipart nature of the reinforcing element of the preferred rear wall width can be constituted in the longitudinal direction, in the height direction and / or in the width direction. Furthermore, the reinforcing element of the preferred rear wall width can be provided above the container rear wall with a constant container rear wall height or above the container rear wall with a shortened container rear wall. The shortened container rear wall can in particular be shortened up to the connection region, in particular the welding region, to the container rim. Instead of a Cr steel sheet, for example a 0.4 mm thick Cr steel sheet, for the adjacent container rear wall element of the container rear wall, a more cost- appropriate steel sheet, for example a carbon steel sheet, can be used for the reinforcing element of the preferred rear wall width. The cost of carbon steel is about one third of the cost of Cr steel.

[0066] The reinforcing element of the preferred rear wall width is in particular used to absorb possible clamping forces during the transport of the installation. The possible clamping forces are also the basis for the design of the reinforcing element of the preferred rear wall width.

[0067] The reinforcing element of the preferred rear wall width can have different cross-sectional shapes. The respective cross-sectional shape can be L-shaped, U-shaped or approximately U-shaped or I-shaped. Of course, other cross-sectional shapes which meet the operational requirements of the reinforcing element of the preferred rear wall width are also possible. The maximum height of the reinforcing element of the preferred rear wall width is in the range of 25 mm to 40 mm, in particular from 25 mm to 25 mm, and the possible width of the reinforcing element of the preferred rear wall width is in the range of 0.3 mm (minimum wall thickness of a carbon steel sheet) to 12 mm, in particular in the range of 6 mm to 12 mm.

[0068] By using the stiffening element of the preferred rear wall width, it is possible, for example, to dispense with the known wooden splints or other additional parts for the transport of the equipment, which cost approximately 0.40 euros per dishwasher. Furthermore, the stiffening element of the preferred rear wall width can be provided with mechanisms for fixing the hose supports, mechanisms for fixing the table plate and / or other mechanisms. The stiffening element can also be used as a height stop, if necessary with a stop dome.

[0069] In another embodiment it is proposed that the stiffening element of the preferred rear wall width is attached, in particular welded, at the container rear wall or at the container frame. Thus, the stiffening element of the preferred rear wall width is butted or lapped to the container rear wall by means of a laser weld seam or can be lap welded to the container frame by means of a roll seam weld seam or spot weld seam.

[0070] The stiffening element of the preferred rear wall width can be attached, in particular welded, into the extrusion channel when the container rear wall is manufactured or possibly also subsequently attached, in particular welded, into the container line by means of a tool. A separate tool is not required for the stiffening element of the preferred rear wall width itself.

[0071] As already explained, the stiffening element of the preferred rear wall width is preferably firmly attached, in particular welded, at the container rear wall or at the container frame. Alternatively, the stiffening element of the preferred rear wall width can also be attached at the container rear wall or at the container frame in a removable manner, for example by means of a tensile or clamping for a form fit known to the person skilled in the art.

[0072] The dishwasher can in particular be a domestic dishwasher.

[0073] Further possible embodiments of the application also include combinations of features or embodiments described previously or hereinafter with respect to the examples which are not explicitly mentioned. Here, for the person skilled in the art it will also be added that individual aspects are to be added as improvements or supplements to the respective basic form of the application. BRIEF DESCRIPTION OF DRAWINGS

[0074] Further advantageous design proposals and aspects of the application are the subject matter of the dependent claims of the application and the embodiments described below. In the following, the application is explained in more detail with reference to the preferred embodiments according to the attached drawings.

[0075] The drawings show

[0076] Figure 1 a schematic perspective view showing one embodiment of a known dishwasher;

[0077] Figure 2 a schematic exploded view showing one preferred embodiment of a rinse container of a dishwasher; Figure 1

[0078] Figure 3 from an oblique front​Figure 2 schematic perspective view of a preferred embodiment of a rinse container of a dishwasher according to the application;

[0079] Figure 4 schematic perspective view of a preferred embodiment of a rinse container of a dishwasher according to the application; Figure 1 schematic exploded view of a preferred embodiment of a rinse container of a dishwasher according to the application;

[0080] Figure 5 schematic exploded view of a preferred embodiment of a rinse container of a dishwasher according to the application; Figure 1 schematic exploded view of a preferred embodiment of a rinse container of a dishwasher according to the application;

[0081] Figure 6 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 1 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0082] Figure 7 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 1 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0083] Figure 7 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 7 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0084] Figure 7 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 1 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0085] Figure 7 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 7 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0086] Figure 7C schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 1 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0087] Figure 7C schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 7C schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0088] Figure 8 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 1 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0089] Figure 9A schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher; Figure 8 schematic view of a container back wall of a rinse container of a dishwasher according to the application in the depth direction of the dishwasher;

[0090] Figure 9B enlarged detail view of a rinse container of a dishwasher according to the application is shown; Figure 9A

[0091] Figure 10 enlarged view showing a vertical section through a weld of a container rear wall according to the application of a rinse container of a dishwasher is shown; Figure 1

[0092] Figure 11 schematic perspective view of a two-part and according to the application container rear wall of a rinse container of a dishwasher is shown, the container rear wall having a reinforcing element; Figure 1

[0093] Figure 12 schematic enlarged detail view of a two-part and according to the application container rear wall of a rinse container of a dishwasher is shown, the container rear wall having a reinforcing element; Figure 11

[0094] Figure 13 schematic enlarged detail view of a two-part and according to the application container rear wall of a rinse container of a dishwasher is shown, the container rear wall having a reinforcing element;

[0095] Figures 14A-14C corresponding longitudinal cross-sectional views showing various preferred and schematic embodiments of reinforcing elements for a container rear wall according to the application are shown.

[0096] In the drawings, identical or functionally identical elements are provided with the same reference signs unless stated otherwise. DETAILED DESCRIPTION

[0097] Figure 1 schematic perspective view showing one embodiment of a known water-guiding household appliance 1. Currently, a water-guiding household appliance is known as a dishwasher 1, in particular a household dishwasher.

[0098] The dishwasher 1 generally has a rinse container 2 which is configured as a work space for accommodating rinsing objects to be cleaned, which can be closed, in particular water-tightly, by means of a container door 3. To this end, a sealing device can be provided between the container door 3 and the rinse container 2. The rinse container 2 is preferably cuboid-shaped. The rinse container 2 can be arranged in a housing of the dishwasher 1. The rinse container 2 and the container door 3 can form a rinsing space 4 for rinsing the rinsing objects.

[0099] The container door 3 is shown in an open position in Figure 1 The container door 3 can be closed or opened by pivoting about a pivot axis 5 provided at a lower end of the container door 3. By means of the container door 3, a loading opening 6 of the front side of the rinse container 2 can be closed or opened.

[0100] ​​​​The rinsing container 2 is, for example, cuboid and comprises a container bottom 7, a container top 8 arranged opposite the container bottom 7, a container rear wall 9 arranged opposite the closed door 3, and two container side walls 10, 11 arranged opposite one another. The container bottom 7, the container top 8, the container rear wall 9 and the container side walls 10, 11 can be made, for example, of high-quality steel sheet.

[0101] The dishwasher 1 further comprises at least one loading level 12 to 14. Each loading level 12 to 14 is preferably a rinse product container of the dishwasher 1 . In particular, multiple loading levels 12 to 14 can be provided, wherein the loading level 12 can be a lower dish basket (lower basket), the loading level 13 can be an upper dish basket (upper basket), and the loading level 14 can be a cutlery drawer of the dishwasher 1 . The multiple loading levels 12 to 14 are preferably arranged one above the other in the rinse container 2 . Each loading level 12 to 14 can be selectively moved into the rinse container 2 in an insertion direction E (arrow), in particular linearly, or outwardly from the rinse container 2 in an extension direction A (arrow), in particular linearly.

[0102] Figure 2 Show Figure 1 Schematic exploded view of a preferred embodiment of a rinse container 2 of a dishwasher 1 .

[0103] In this preferred embodiment of the washing container 2 of the dishwasher 1, at least the right container side wall 11, the container top 8, and the left container side wall 10 form a container hood 15, which is preferably a straight pressed part in the stretched state and is subsequently bent into a U-shape. The container hood 15 and at least the concave container bottom 7, which is preferably a deep-drawn part, form a container frame 16. The container hood is designed in a so-called "upright U-shape," and the concave container bottom 7 is preferably a deep-drawn part. The container rear wall 9, which is preferably designed as a flat pressed part, is attached, in particular welded, to the rear side of the container frame 16.

[0104] Furthermore, the container hood 15 has a U-shaped, downwardly open frame part 17 on the front side, which forms the front side F of the rinsing container 2. The frame part 17 is connected to the container hood 15 in a form-fitting manner by means of riveting, in particular heat riveting, and is inserted into the concave container bottom 7. Furthermore, the frame part 17 has a circumferential, groove-shaped contour 18 on the front side, which accommodates a door seal known to those skilled in the art, and preferably consists of plastic, in particular glass-fiber-reinforced polypropylene. Such a frame part 17 is disclosed, for example, in the aforementioned reference DE 10 2015 216 228 A1; the relevant content of this reference is hereby incorporated into the subject matter of the present description.

[0105] The two container side walls 10, 11 of the container cover 15 are preferably connected to each other in a positively locking manner at their respective lower wall edges 26.1, 26.2 by means of external interfaces 19 with the concave container bottom 7, in particular by dynamic or static folding or by roll seam welding (see Figure 3 ).

[0106] The two external connections 19 , the container hood 15 and the concave container bottom 7 each have an outwardly angled edge 20 of 90° in their rear region.

[0107] Figure 3 Shown from the front Figure 2 Schematic perspective view of a preferred embodiment of a rinse container of a dishwasher.

[0108] As already described in detail, the two container side walls 10, 11 of the container cover 15 are arranged at their respective lower wall edges 26.1, 26.2 ( Figure 2 ) are connected to each other with the concave container bottom 7 by means of an external interface 19, preferably connected to each other in a form-fitting manner, in particular by dynamic or static folding or roll seam welding.

[0109] Furthermore, the container rear wall 9 is welded to the rear side of the container frame 16 by means of laser welding or roll seam welding.

[0110] The frame part 17 is connected to the container hood 15 in a form-fitting manner by means of riveting, in particular hot riveting, and is inserted into the concave container bottom 7. Furthermore, the frame part 17 is provided on the front with a circumferential, groove-shaped contour 18, which accommodates a door seal known to those skilled in the art, and preferably consists of plastic, in particular glass-fiber-reinforced polypropylene.

[0111] The right container sidewall 11, container top 8, left container sidewall 10, and container cover 15 are preferably made of ferritic steel, such as WNr. 1.4016. Furthermore, the concave container bottom 7 is preferably made of austenitic steel, such as WNr. 1.4301 or WNr. 1.4310.

[0112] Figure 4 Show Figure 1 Schematic exploded view of another preferred embodiment of the rinse container 2 of the dishwasher 1 .

[0113] In this preferred embodiment of the washing container 2 of the dishwasher 1, at least the right container side wall 11, the container top 8, and the left container side wall 10 form a container cover 15, which, in the stretched state, forms a preferably flat container jacket plate 21. The concave container bottom 7, in the stretched state, forms a preferably flat container base plate 22.

[0114] Furthermore, an inlaid sealing bed frame 24 is provided separately, which is welded to the inner side of the container jacket 2 and then forms, together with the container jacket 2, on the front side a circumferential, trough-shaped contour 18 for accommodating a door seal known to the person skilled in the art, and an outlaid frame part 25, in particular a steel frame.

[0115] In the finished washing container 2, the two container plates 21, 22, after their joining, in particular welding, are formed in the expander into a container rim. In particular, the two side walls 10, 11 of the container jacket 15 are joined to each other, in particular welded to each other, at their respective lower wall edges 26.1, 26.2 with the concave container bottom 7 by a joining method.

[0116] Furthermore, the container rear wall 9, which is configured as a preferably flat press part, is welded to the rear side of the container rim by means of laser welding or roll seam welding.

[0117] The right-hand container side wall 11, the container top 8 and the left-hand container side wall 10, i.e. the container jacket 15 or the container sheath plate 21, are preferably configured from ferritic steel, for example from WNr. 1.4016. Furthermore, the concave container bottom 7, i.e. the container bottom plate, is preferably configured from austenitic steel, for example from WNr. 1.4301.

[0118] Figure 5 a schematic exploded view of a further preferred embodiment of a washing container 2 of a dishwasher 1. Figure 1 a schematic exploded view of a further preferred embodiment of a washing container 2 of a dishwasher 1.

[0119] In this preferred embodiment of the washing container 2 of the dishwasher 1, the washing container 2 comprises a plurality of wall parts 7 to 11, which are preferably configured as flat container plates 23 before the washing container 2 is manufactured and are subsequently pressed or deep-drawn. Thereafter

[0120] Furthermore, an inlaid sealing bed frame 24 is provided separately, which is welded to the inner side of the container jacket 2 and then forms, together with the container jacket 2, on the front side a circumferential, trough-shaped contour 18 for accommodating a door seal known to the person skilled in the art, and an outlaid frame part 25, in particular a steel frame.

[0121] In the finished washing container 2, the wall parts 7, 8, 10 and 11 are joined to each other, in particular welded to each other, preferably by means of laser welding or roll seam welding.

[0122] Furthermore, the container rear wall 9, which is configured as a preferably flat press part, is welded to the rear side of the container rim by means of laser welding or roll seam welding. Figure 3 ).

[0123] The container side wall 11 on the right, the container top 8 and the container side wall 10 on the left are preferably composed of ferritic steel, for example of WNr. 1.4016. Also, the concave container bottom 7 is preferably composed of austenitic steel, for example of WNr. 1.4301 or WNr. 1.4310.

[0124] Figure 6 is shown Figure 1 schematic view of the container rear wall 9 according to the application of the wash container 2 of the dishwasher 1 in the depth direction T (arrow) of the dishwasher 1.

[0125] The depth direction T (arrow) extends in the direction from the container door 3 (see Figure 1 ) to the container rear wall 9 (see Figure 1 ).

[0126] The container rear wall 9 comprises at least two, in particular planar, container rear wall elements 9.1, 9.2, which are connected, in particular welded, to at least one adjacent container rear wall element 9.2, 9.1 at least section-wise along a connection area VB, in particular a connection line VL, by at least one joining method. The joining method is preferably a welding method with a weld seam SN, in particular a laser welding with a laser weld seam (see Figure 10 ).

[0127] Each individual container rear wall element 9.1, 9.2 of the container rear wall 9 can of course have selected features, i.e. for example material, treatment, area size, arrangement, orientation, composition, in particular shape, and element thickness.

[0128] The connection area VB, in particular the connection line VL, preferably extends approximately horizontally, in particular horizontally. However, it can also extend at an angle of up to 90° with respect to the horizontal line H (double arrow). The lower edge of the vertically lowermost container rear wall element can also extend horizontally, and the upper edge of the vertically lowermost container rear wall element can also extend horizontally or at a small angle, for example up to 15°, with respect to the horizontal line H (double arrow).

[0129] According to the application, the vertically lowermost container rear wall element 9.1 is composed of austenitic steel, for example of WNr. 1.4301, while the other, in particular upper, container rear wall element 9.2 is composed of ferritic steel, for example of WNr. 1.4016. The vertical line V is indicated by the double arrow.

[0130] Furthermore, the vertically lowermost container rear wall element 9.1 has a height H9.1 from the line of contact BL with the concave container bottom 7, which lies in the range from 10 mm to 50 mm, preferably from 15 mm to 40 mm, in particular from 20 mm to 30 mm (see Figure 9A ).

[0131] schematic exploded view in the embodiment shown in Figure 2 、 Figure 4 and Figure 5 of the rinse container 2 of the dishwasher 1 according to the application can of course have a container rear wall 9 which has at least two, in particular planar, container rear wall elements which are connected, in particular welded, at least section-wise along a connection region VB, in particular a connection line VL, to at least one adjacent container rear wall element by at least one joining method. The respective joining method is preferably a welding method with the production of a weld seam SN, in particular a laser welding with the production of a laser weld seam (see Figure 10 ).

[0132] The respective connection region VB, in particular the respective connection line VL and the respective weld seam SN are indicated only by means of a common dashed line.

[0133] Figure 7 A shows a schematic view of the two-part and according to the application container rear wall 9 of the rinse container 2 of the dishwasher 1 of Figure 1 .

[0134] The container rear wall 9 has two planar container rear wall elements 9.1, 9.2. The vertically lowermost container rear wall element 9.1 consists of austenitic steel and the further, in particular upper, container rear wall element 9.2 arranged vertically thereon consists of ferritic steel. The two container rear wall elements 9.1, 9.2 are connected, in particular welded, at least section-wise along a connection region VB, in particular a connection line VL, to at least one adjacent container rear wall element 9.2, 9.1 by at least one joining method. The joining method is preferably a welding method with the production of a weld seam SN, in particular a laser welding with the production of a laser weld seam (see also Figure 10 ).

[0135] Figure 7 A* shows a schematic side view of the two-part and according to the application container rear wall 9 of the rinse container 2 of the dishwasher 1 of Figure 7 A.

[0136] The two container rear wall elements 9.1, 9.2 of the container rear wall 9 can have the same wall thickness s9.1, s9.2 in alignment with one another, for example a wall thickness of 0.4 mm. However, the wall thickness s9.1, s9.2 can also be different; the respective wall thickness s9.1, s9.2 can be between 0.25 mm and 0.60 mm. It generally applies that each individual container rear wall element 9.1, 9.2 of the container rear wall 9 can have selected features, for example material, treatment, area size, arrangement, orientation, composition, in particular shape, and element thickness.

[0137] Figure 7 B shows Figure 1 a schematic view of the three-part and according to the application container back wall 9 of the washing container 2 of the dishwasher 1 in the depth direction T (arrow) of the dishwasher 1.

[0138] The container back wall 9 has three face-like container back wall elements 9.1, 9.2, 9.3. The vertically lowermost container back wall element 9.1 consists of austenitic steel and has a wall thickness s9.1 (B) of, for example, 0.4 mm, Figure 7 B), the further, in particular upper, first container back wall element 9.2 arranged vertically above it consists of ferritic steel and has a wall thickness s9.2 (B) of, for example, 0.3 mm, Figure 7 B), and the further, in particular at least partially, outer second container back wall element (“noise protection element”) 9.3 arranged outside the further, in particular upper, first container back wall element consists of ferritic steel and has a wall thickness s9.3 (B) of, for example, 0.3 mm. Figure 7 B).

[0139] However, the wall thicknesses can also be different; the respective wall thicknesses can lie between 0.25 mm and 0.60 mm. In general, it applies that each individual container back wall element 9.1, 9.2 of the container back wall 9 can have selected features, such as material, treatment, area size, arrangement, orientation, composition, in particular shape, and element thickness.

[0140] The three container back wall elements 9.1, 9.2, 9.3 are connected, in particular welded, to at least one adjacent container back wall element 9.1, 9.2, 9.3 at least section-wise along a connection region VB, in particular a connection line VL, by at least one joining method. The joining method is preferably a welding method with a weld seam SN, in particular a laser welding with a laser weld seam (see also Figure 10 ).

[0141] Figure 7 B shows Figure 7 a schematic side view of the three-part and according to the application container back wall 9 of the washing container 2 of the dishwasher 1.

[0142] The two container back wall elements 9.1, 9.2 of the container back wall 9 are arranged flush with one another on the inside.

[0143] The further, in particular at least partially, outer second container back wall element (“noise protection element”) 9.3 is arranged in particular in a region C (double arrow) of the container back wall 9 in which any spray jets of an upper spray system (not shown) are directed onto the inside IS of the container back wall 9, i.e. onto the inside of the first additional container back wall element 9.2.

[0144] Figure 7C showsFigure 1 Schematic view of the four-part and according to the application container back wall 9 of the rinse container 2 of the dishwasher 1 in the depth direction T (arrow) of the dishwasher 1.

[0145] The container back wall 9 has four face-like container back wall elements 9.1 to 9.4. The vertically lowermost container back wall element 9.1 consists of austenitic steel and has a wall thickness s9.1 ( Figure 7C ), the further first container back wall element (“sealing element”) 9.2 arranged vertically above it consists of ferritic steel and has a wall thickness s9.2 ( Figure 7C ), the further second container back wall element (“noise protection element”) 9.3 arranged vertically above it consists of ferritic steel and has a wall thickness s9.3 ( Figure 7C ), and the further third container back wall element (“second sealing element”) 9.4 arranged vertically above it consists of ferritic steel and has a wall thickness s9.4 ( Figure 7C ).

[0146] However, the wall thicknesses can also be different; the respective wall thicknesses can lie between 0.25 mm and 0.60 mm. In general, it applies that each individual container back wall element 9.1 to 9.4 of the container back wall 9 can have selected features, such as material, treatment, area size, arrangement, orientation, composition, in particular shape, and element thickness.

[0147] The four container back wall elements 9.1 to 9.4 are connected, in particular welded, to at least one adjacent container back wall element 9.1 to 9.4 at least section-wise along the connection region VB, in particular the connection line VL, by at least one joining method. The joining method is preferably a welding method with a weld seam SN, in particular laser welding with a laser weld seam (see Figure 10 ).

[0148] Figure 7C Schematic side view of the four-part and according to the application container back wall 9 of the rinse container 2 of the dishwasher 1. Figure 7C Schematic side view of the four-part and according to the application container back wall 9 of the rinse container 2 of the dishwasher 1.

[0149] The four container back wall elements 9.1 to 9.4 of the container back wall 9 are arranged flush with one another on the inside.

[0150] The further second container back wall element (“noise protection element”) 9.3 arranged vertically above it is arranged in particular in the region C (double arrow) of the container back wall 9 in which the possible spray jets of the upper spray system (not shown) all impinge on the inside IS of the container back wall 9.

[0151] Figure 8 schematically from the right Figure 1 schematically from the right.

[0152] In this schematic side view of the rinse container 2, a concave container bottom 7, a right-hand container side wall 11 and a container top 8 are shown. A frame part 24 is shown at the front side of the rinse container 2 and a container back wall 9 according to the application is shown at the rear side of the rinse container 2.

[0153] The container back wall 9 comprises at least two, in particular planar, container back wall elements 9.1, 9.2, which are connected, in particular welded, at least section-wise along a connection area VB, in particular a connection line VL, with at least one adjacent container back wall element 9.2, 9.1 by at least one joining method. The joining method is preferably a welding method with a weld seam, in particular a laser welding with a laser weld seam (see also Figure 10 ).

[0154] Each individual container back wall element 9.1, 9.2 of the container back wall 9 can of course have selected features, i.e. for example material, processing, area size, arrangement, orientation, composition, in particular shape, and element thickness.

[0155] According to the application, the vertically lowermost container back wall element 9.1 is composed of an austenitic steel, for example of WNr. 1.4301, while the further, upper container back wall element 9.2 is composed of a ferritic steel, for example of WNr. 1.4016. The vertical line V is indicated by a double arrow.

[0156] Figure 9A An enlarged detail view of the rinse container 2 of the dishwasher 1 according to Figure 1 is shown.

[0157] The vertically lowermost container back wall element 9.1 of the container back wall 9 has in an easily recognizable manner from the line of contact BL with the concave container bottom 7 of the rinse container 2 of the dishwasher 1 a height H9.1 which lies in the range from 10 mm to 50 mm, preferably from 15 mm to 40 mm, in particular from 20 mm to 30 mm.

[0158] Figure 9B An enlarged detail view of the rinse container 2 of the dishwasher 1 according to Figure 9A is shown.

[0159] The enlarged detail shows the rear of the concave container bottom 7 along with the course of the external interface 19, i.e. the 90° bent edge. Furthermore, the view shows the course of the lower part of the vertically lowermost container rear wall element 9.1 of the container rear wall 9 according to the application and the further, in particular upper, container rear wall element 9.2 arranged vertically above it. The container rear wall 9, which is flanged in its lower region, is welded at the concave container bottom 7, i.e. to the container rim 16, by means of laser welding or roll seam welding. Only the welding region SB is designated.

[0160] Furthermore, the vertically lowermost container rear wall element 9.1 has a height H9.1 from the line of contact BL with the concave container bottom 7 of the wash tank 2 of the dishwasher 1, which lies in the range from 10 mm to 50 mm, preferably from 15 mm to 40 mm, in particular from 20 mm to 30 mm.

[0161] The container rear wall elements 9.1, 9.2 are connected, in particular welded, to at least one adjacent container rear wall element 9.2, 9.1 at least section-wise along the connection region VB, in particular the connection line VL, by means of at least one joining method. The joining method is preferably a welding method with the production of a weld seam SN, in particular laser welding with the production of a laser weld seam (see Figure 10 ).

[0162] Figure 10 An enlarged view showing a vertical section through a weld seam SN of the container rear wall 9 according to the application of the wash tank 2 of the dishwasher 1 is shown.

[0163] An enlarged view showing two adjacent container rear wall elements of the container rear wall 9 according to the application of the wash tank 2, the vertically lowermost container rear wall element 9.1 composed of austenitic steel and the further, in particular upper, container rear wall element 9.2 composed of ferritic steel arranged vertically above it, is shown. The two container rear wall elements 9.1, 9.2 are connected to one another at least section-wise, preferably completely, by means of at least one joining method along the connection region VB, in particular the connection line VL, in particular welded. The joining method is preferably a welding method with the production of the schematically shown weld seam SN, in particular laser welding with the production of a laser weld seam. The schematically shown weld seam SN, in particular the laser weld seam, has the schematically shown weld root SW, which is formed on the outer side AS of the wash tank 2, and the schematically shown joint surface NO, which is formed on the inner side IS of the wash tank 2 and is post-treated, preferably passivated, in particular laser passivated.

[0164] Figure 11 A schematic perspective view of the two-part and according to the application container rear wall 9 of the wash tank 2 of the dishwasher 1 according to Figure 1 is shown, which has a reinforcing element 27.

[0165] The stiffening element 27 is provided at least in the area B above the container rear wall 9 according to the application. The stiffening element 27 is preferably of the width of the rear wall and is preferably a stiffening profile and in particular a stiffening rail. The stiffening element 27 can be additionally provided at all of the above-mentioned two-piece or multi-piece and according to the application container rear walls 9.

[0166] The stiffening element 27 can be provided above the container rear wall 9 according to the application either with a constant height of the container rear wall 9 or with a shortened height of the container rear wall 9. The shortened and according to the application container rear wall 9 can in particular be shortened up to the connection area, in particular the welding area, to the container frame 16 (see Figure 3 ).

[0167] The stiffening element 27 is in particular used to absorb possible clamping forces K (arrow) during transport of the device.

[0168] Figure 12 A schematic and enlarged detail of a two-piece and according to the application container rear wall 9 with a stiffening element 27 is shown. Figure 11

[0169] The stiffening element 27 is provided with a mechanism 28 for securing a hose support, a mechanism 29 for securing a table plate and / or other mechanisms.

[0170] In addition, the stiffening element 27 can also serve as a height stop 30, which has a stop dome if necessary.

[0171] Figure 13 A preferred type of attachment of the stiffening element 27 at the container rear wall 9 according to the application is shown.

[0172] The stiffening element 27 is preferably attached, in particular welded, directly at the container rear wall 9 according to the application. The stiffening element 27 can be attached in a butt or lap joint (not shown) at the container rear wall 9 according to the application by means of a laser weld seam.

[0173] Alternatively, the stiffening element 27 can also be attached, in particular welded, preferably directly at the container frame 16 (see Figure 3 ) in a manner not shown. Here, the stiffening element 27 can be attached at the container frame 16 (see Figure 3 ) in a superimposed manner by means of a laser weld seam, a seam weld or a spot weld.

[0174] Figures 14A-14C A respective longitudinal sectional view showing the respective preferred and schematic embodiment of a stiffening element 27 for a not shown and according to the application container rear wall is shown.

[0175] ​The reinforcing element 27 can have different cross-sectional shapes Q. Each cross-sectional shape Q can be L-shaped Figure 14A ), U-shaped or approximately U-shaped Figure 14B ) or I-shaped Figure 14C ). The maximum height H27 of the reinforcing element 27 (see, for example Figure 14A ) lies in the range from 25 mm to 40 mm, in particular in the range from 25 mm to 25 mm, and the possible width B27 of the reinforcing element 27 (see, for example Figure 14B ) lies in the range from 0.3 mm (minimum wall thickness of a carbon steel sheet) to 12 mm, in particular in the range from 6 mm to 12 mm.

[0176] Although the application has been described in accordance with the embodiments, modifications can be made.

[0177] Used reference signs

[0178] 1 dishwasher; domestic dishwasher

[0179] 2 rinsing vessel

[0180] 3 vessel door

[0181] 4 rinsing chamber

[0182] 5 pivot axis

[0183] 6 loading opening

[0184] 7 vessel bottom

[0185] 8 vessel top

[0186] 9 vessel rear wall

[0187] 9.1 vessel rear wall element

[0188] 9.2 vessel rear wall element

[0189] 9.3 vessel rear wall element

[0190] 9.4 vessel rear wall element

[0191] 10 vessel side wall

[0192] 11 vessel side wall

[0193] 12 loading plane; lower dish basket (lower basket)

[0194] 13 loading plane; upper dish basket (upper basket)

[0195] 14 loading plane; cutlery drawer

[0196] 15 vessel cover

[0197] 16 container rim

[0198] 17 frame part

[0199] 18 slot-shaped profile

[0200] 19 external interface

[0201] 20 90° bend

[0202] 21 container jacket plate

[0203] 22 container base plate

[0204] 23 container plate

[0205] 24 sealing bed frame

[0206] 25 frame part

[0207] 26.1 lower wall edge

[0208] 26.2 lower wall edge

[0209] 27 clamping element

[0210] 28 mechanism

[0211] 29 mechanism

[0212] 30 height stop

[0213] A extraction direction (arrow)

[0214] AS outer side

[0215] B region

[0216] BL contact line

[0217] B27 width

[0218] C region (double arrow)

[0219] E push-in direction (arrow)

[0220] F face

[0221] H horizontal line (double arrow)

[0222] H9.1 height

[0223] H27 height

[0224] IS inner side

[0225] K clamping force (arrow)

[0226] NO slit surface

[0227] Q cross-sectional shape

[0228] SB weld area

[0229] SN weld

[0230] SW weld root

[0231] s9.1 wall thickness

[0232] s9.2 wall thickness

[0233] s9.3 wall thickness

[0234] s9.4 wall thickness

[0235] T depth direction (arrow)

[0236] V vertical line (double arrow)

[0237] VB connection area

[0238] VL connection line.

Claims

1. A dishwasher (1), in particular a domestic dishwasher, comprising at least a rinsing container (2) for receiving the rinsed goods, the rinsing container comprising a plurality of wall parts (7 to 11), which are preferably made of metal, and the rinsing container is equipped with a loading opening (6) on the front side for loading the rinsed goods, the loading opening being closable at least temporarily by a container door (3), -in, At least the right container side wall (11), the container top (8) and the left container side wall (10) form a container cover (15), wherein the container cover (15) and at least the concave container bottom (7) form a container frame (16), - wherein the container rear wall (9) is attached, in particular welded, to the container frame (16) at the rear side, and -Wherein, the container rear wall (9) comprises at least two, in particular straight, container rear wall elements (9.1, 9.2), preferably at least three, in particular straight, container rear wall elements (9.1, 9.2, 9.3), in particular at least four, in particular straight, container rear wall elements (9.1 to 9.4), which are connected, in particular welded, to at least one adjacent container rear wall element (9.1, 9.2; 9.1, 9.2, 9.3; 9.1 to 9.4) along a connection area (VB), in particular a connection line (VL), at least in a partial section by means of at least one joining method.

2. The dishwasher (1) according to claim 1, characterized in that The connecting region (VB), in particular the connecting line (VL), extends approximately horizontally, in particular horizontally.

3. The dishwasher (1) according to claim 1 or 2, characterized in that The joining method is a generation weld (SN) welding method, in particular a generation laser weld laser welding, and / or The weld seam (SN), in particular the laser weld seam, has a weld root (SW) which is arranged on the outside (AS) of the rinsing container (2).

4. The dishwasher (1) according to claim 3, characterized in that The weld seam (SN), in particular the laser weld seam, has a seam surface (NO), which is preferably arranged on the inside (IS) of the rinsing container (2) and is post-treated, preferably passivated, in particular laser passivated.

5. Dishwasher (1) according to any one of the preceding claims, characterized in that The vertically lowest container rear wall element (9.1) has a height (H9.1) which, starting from a contact line (BL) adjacent to the concave container bottom (7), is in the range of 10 mm to 50 mm, preferably 15 mm to 40 mm, in particular 20 mm to 30 mm.

6. Dishwasher (1) according to any one of the preceding claims, characterized in that The concave container bottom (7) and the vertically lowest container rear wall element (9.1) consist of austenitic steel.

7. Dishwasher (1) according to any one of the preceding claims, characterized in that - at least one further container rear wall element (9.2, 9.3, 9.4), the right container side wall (11), the container top (8) and the left container side wall (10) consist of ferritic steel, and / or The container rear wall (9) is welded to the container frame (16) on the rear side by means of laser welding or roll seam welding.

8. Dishwasher (1) according to any one of the preceding claims, characterized in that The two container side walls (10, 11) of the container cover (15) are connected to each other at the corresponding lower wall edges of the two container side walls by means of external interfaces (19) with the concave container bottom (7), preferably in a form-fitting manner, in particular by dynamic or static folding or by roll seam welding.

9. The dishwasher (1) according to claim 8, characterized in that The two external interfaces (19), the container cover (15) and the concave container bottom (7) each have an outward 90° bend (20) in the rear area of ​​the two external interfaces, the container cover and the concave container bottom.

10. The dishwasher (1) according to claim 8 or 9, characterized in that - the container closure (15) is formed in the stretched state as a preferably straight pressed part and is subsequently bent into a U-shape, and The container rear wall (9), which is attached, in particular welded, to the container frame (16), is designed on the rear side as a preferably straight pressed part.

11. The dishwasher (1) according to any one of claims 1 to 7, characterized in that The two container side walls (10, 11) of the container cover (15) are connected to each other at the corresponding lower wall edges of the two container side walls and the concave container bottom (7) by means of a joining method, in particular welded to each other.

12. The dishwasher (1) according to claim 11, characterized in that - the container hood (15) forms a preferably flat container jacket plate (21) in the stretched state, - the concave container bottom (7) forms a preferably flat container base (22) in the stretched state, - two container plates (21, 22) are deformed in an expander to form the container frame (16) after the two container plates have been connected, in particular welded, and The container rear wall (9), which is attached, in particular welded, to the container frame (16), is designed on the rear side as a preferably straight pressed part.

13. The dishwasher (1) according to any one of claims 1 to 7, characterized in that The rinsing container (2) comprises a plurality of wall parts (7 to 11) which, before production of the rinsing container (2), preferably form a flat container plate (23).

14. Dishwasher (1) according to any one of the preceding claims, characterized in that At least one reinforcement element (27) is provided in the region (B) above the container rear wall (9), which is preferably as wide as the rear wall.

15. The dishwasher (1) according to claim 14, characterized in that The reinforcement element (27), which is preferably as wide as the rear wall, is attached, in particular welded, to the container rear wall (9) or the container frame (16).

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