EP3863489B1 - Domestic appliance, method for producing a domestic appliance and method for dismantling a domestic appliance - Google Patents

Description

The present invention relates to a household appliance, in particular a household dishwasher.

To acoustically insulate the rinsing tank of a domestic dishwasher, bitumen mats can be applied to the outside of the rinsing tank. These bitumen mats can be glued to the outside of the rinsing tank using a hot melt adhesive, for example. However, such bitumen mats have a high heat absorption capacity and conduct the absorbed heat away from the rinsing tank. If the proportion of the rinsing tank surface covered with bitumen mats is reduced, the energy consumption of the domestic dishwasher can be reduced. However, this reduction in the surface covered with bitumen mats results in the noise emissions of the domestic dishwasher increasing.

The publication DE 20 2012 103 799 U1 discloses a sound-absorbing sandwich panel that can be used to deaden the noise of a household dishwasher. The sandwich panel has a first layer for sound insulation and a second layer for sound deadening and/or thermal insulation. The sound-absorbing sandwich panel is manufactured as a prefabricated component and can, for example, be glued to a washing container in a household dishwasher.

The publication DE 10 2010 031 484 A1 discloses a household dishwasher with at least one component, which is provided with a bitumen mat for noise reduction and / or sound insulation of the component, the bitumen mat being glued to the component by means of at least one adhesive layer made of a reactively hardened bituminous mixture.

The publication EN 10 2011 077 734 A1 discloses a household dishwasher, wherein the household dishwasher comprises a container having a wall for receiving goods to be processed and wherein at least one of these walls has at least one layer of an insulating material on the outside is assigned. The household dishwasher is designed in such a way that at least one shaped body is arranged between the respective wall and the respective insulated layer, which has, on a side facing the washing container in the mounted position, a negative relief of beads, embossings or similar indentations or protrusions contained on the respective fixed or movable wall.

The publication DE 42 27 957 A1 discloses a household appliance, in particular a noise and/or heat-insulated dishwasher or washing machine, the housing wall part or the rinsing or suds container of which is at least partially covered with insulating mats made of bitumen, plastic, mineral fibers or the like. The insulating mats are each connected to the rinsing container or the like via a single- or multi-layer intermediate carrier, which can be split or removed from the rinsing container, the housing wall parts or the insulating mat. The intermediate carrier can be glued to the rinsing container or the like and/or to the insulating mat, or the adhesive connections can themselves be designed as intermediate carriers. Furthermore, a hot melt adhesive or preferably a removable pressure sensitive adhesive can be used as the adhesive connection. Furthermore, the single- or multi-layer intermediate carrier can consist of paper and/or an applied plastic film.

The publication EP 3 092 934 A1 discloses an arrangement for acoustically and thermally insulating a receiving area of a water-conducting household appliance, in particular a rinsing container of a dishwasher. The arrangement comprises a first insulating element which is designed to thermally insulate the receiving area, and a second insulating element which is designed to acoustically insulate the receiving area, wherein the first insulating element is arranged between the receiving area and the second insulating element and wherein the first insulating element is foamed directly onto the receiving area.

The publication DE 41 10 291 A1 discloses a method for producing a dishwasher with a washing container and an outer housing jacket surrounding the washing container, the washing container being at least partially covered with bitumen mats to dampen the washing noise, on which one fills the housing space between the outer housing jacket and the internal washing container

Lining, for example made of plastic foam, is applied. Before they are attached to the washing container, the bitumen mats are given a shape that is adapted to the contours of the washing container and they are then connected to the washing container by a detachable adhesive or adhesive connection. The bitumen mats can be cold-formed in a first process step in order to adapt to the contours of the washing container before being placed on the washing container and in a subsequent step after being placed they can be melted at certain points on the washing container. Alternatively, the bitumen mats can be heated over a large area in a first process step in order to adapt to the contours of the washing container before being placed on the washing container and brushed on in a subsequent step after being placed on the washing container.

The publication DE 35 10 932 A1 discloses an adhesive, non-destructively removable insulation system for sound insulation of partition walls, in particular in motor vehicles, in which a layer of material (prefabricated from a highly under-crosslinked polyurethane or produced by spraying on a heavily under-crosslinked 2-component mixture) is used to create a force-fitting connection between the downstream layers and the substrate ( adhesive coating) is present.

The publication DE 37 10 731 A1 discloses flexible polyurethane foams with sound-insulating and sound-deadening properties, obtainable by reacting a polyisocyanate or polyisocyanate prepolymer with excess polyols or mixtures thereof while maintaining an NCO index of ≤ 80, in particular ≤ 70 in order to produce an adhesive surface and further characterized by a density of 80 to 250 kg/m, an elastic modulus of < 300,000 N/m and a loss factor of at least 0.4.

Against this background, an object of the present invention is to provide a household appliance, in particular a household dishwasher, with an improved insulation arrangement.

Accordingly, a household appliance, in particular a household dishwasher, is provided with a functional container, in particular a washing container, and an insulation arrangement provided on the outside of the functional container, in particular a washing container thermal and / or acoustic insulation of the functional container, in particular washing container, proposed, wherein the insulation arrangement for thermal and / or acoustic insulation of the functional container, in particular washing container, has a first insulation element for thermal insulation of the functional container, in particular washing container, and wherein the first insulation element for thermal Insulation of the functional container, in particular the washing container, is made in one piece from a plastic material. The first insulation element for the thermal insulation of the functional container, in particular the washing container, has adhesive properties in a hardened and/or cross-linked state, so that the first insulation element for the thermal insulation of the functional container, in particular the washing container, has a surface facing the functional container, in particular the washing container adheres to the functional container, in particular the washing container, and can be separated from it in a non-destructive manner. Furthermore, the first insulation element for thermally insulating the functional container, in particular the washing container, is positively connected to the functional container, in particular the washing container. Furthermore, the functional container, in particular the washing container, has an elevation on the outside, which engages in a form-fitting manner in a recess provided on the first insulation element for thermal insulation of the functional container, in particular the washing container, and/or the functional container, in particular the washing container, has a recess on the outside, in which engages in a form-fitting manner an elevation provided on the first insulation element for the thermal insulation of the functional container, in particular the washing container. Furthermore, the positive connection between the first insulation element for thermally insulating the functional container, in particular the washing container, and the functional container, in particular the washing container, is subject to play. Because the plastic material itself has adhesive properties, in the production of the household appliance, in particular the household dishwasher, a process step of applying an adhesive or an adhesive layer to the insulation element for thermal insulation of the functional container, in particular the washing container, and / or the functional container, in particular Rinsing container can be dispensed with. As a result, the household appliance, in particular the household dishwasher, can be manufactured more cost-effectively. Because the insulation element for the thermal insulation of the functional container, in particular the washing container, is non-destructive and in particular also residue-free from the functional container, in particular washing container, is separable, after the end of the service life of the household appliance, in particular the household dishwasher, the insulation arrangement for thermal and / or acoustic insulation of the functional container, in particular washing container, can be easily separated from the functional container, in particular washing container, and both components can be without or only be fed into a recyclable material cycle with minimal contamination.

The insulation element for thermal insulation of the functional container, in particular the washing container, is preferably made entirely of the plastic material. “One-piece material” here means that the insulation element for thermal insulation of the functional container, in particular the washing container, has only one material, namely the plastic material mentioned above. The functional container, in particular the washing container, is in particular cuboid-shaped and comprises a base, a rear wall, a ceiling, two opposite side walls and a door. The insulation arrangement for thermal and/or acoustic insulation of the functional container, in particular the washing container, can be provided on the rear wall, the ceiling, the side walls and/or on the door. The insulation arrangement for thermal and/or acoustic insulation of the functional container, in particular the washing container, can also be provided on the floor. The functional container, in particular the washing container, and the door enclose a functional space, in particular the washing compartment, of the household appliance, in particular the household dishwasher. Items to be cleaned can be accommodated in the functional container, in particular the washing container. The insulation element for the thermal insulation of the functional container, in particular the washing container, can also be referred to as the first insulation element for the thermal insulation of the functional container, in particular the washing container. The first insulation element is suitable for thermally acoustically insulating the functional container, in particular the washing container. The insulation element can therefore also be referred to as a thermal insulation element.

“Outside” means facing away from the functional container, in particular the washing container. For example, the rear wall, the floor, the ceiling, the side walls and/or the door each have an inner side facing the functional space, in particular the washing compartment, and an inner side facing the functional space, in particular the washing compartment. facing away from the outside. The insulation arrangement for thermal and/or acoustic insulation of the functional container, in particular the washing container, is provided on the respective outside. The fact that the insulation element for the thermal insulation of the functional container, in particular the washing container, can be separated "non-destructively" from the functional container, in particular the washing container, is to be understood as meaning that the insulation element for the thermal insulation of the functional container, in particular the washing container, from the functional container, in particular the washing container, can be pulled off or removed without residues of the insulation element for thermal insulation of the functional container, in particular washing container, remaining on the functional container, in particular washing container. However, minor residues may also remain on the functional container, in particular the washing container. This means that the insulation element for thermally insulating the functional container, in particular the washing container, can be easily removed from the functional container, in particular the washing container, but residues may remain on the functional container, in particular the washing container. These can be removed by rubbing. In particular, the insulation element for thermal insulation of the functional container, in particular the rinsing container, can be separated from the functional container, in particular the rinsing container, without any aids, such as solvents.

The plastic material can have several components which are mixed to produce the insulation element for the thermal insulation of the functional container, in particular the washing container, and react chemically with one another in such a way that the plastic material completely hardens and/or crosslinks. The plastic material itself has the adhesive properties. In the present case, “adhesion” is to be understood as meaning the property of the plastic material that the surface of the insulating element facing the washing container for thermal insulation of the functional container, in particular washing container, interacts with an outside of the functional container, in particular washing container, in such a way that the insulation element for thermal insulation of the functional container, in particular washing container, adheres to the functional container, in particular washing container. The adhesion can be based on molecular interactions between the plastic material and the material of the functional container, in particular the washing container. Furthermore, adhesion can also be based on physical-mechanical forces. For example, the plastic material can be in microscopic pores and/or depressions of the Functional container, especially washing container, clamp or get caught. The insulation element for thermal insulation of the functional container, in particular the washing container, is connected to the functional container, in particular the washing container, without adhesive. As stated above, the plastic material of the insulation element for the thermal insulation of the functional container, in particular the washing container, itself includes adhesive properties. This makes it possible to dispense with an adhesive for connecting the insulation element for thermal insulation of the functional container, in particular the washing container, with the functional container, in particular the washing container. This simplifies the production of the household appliance, in particular the household dishwasher, and enables improved recycling of the materials used.

A positive connection is created by the interlocking or behind-reaching of at least two connection partners. A positive connection can be released without damaging the connection partners. The positive connection between the first insulation element for the thermal insulation of the functional container, in particular the washing container, and the functional container, in particular the washing container, supports the adhesive properties of the plastic material of the first insulation element for the thermal insulation of the functional container, in particular the washing container. Due to the positive connection, it is not possible to move the first insulation element for the thermal insulation of the functional container, in particular the washing container, relative to the functional container, in particular the washing container. The first insulation element for thermal insulation of the functional container, in particular the washing container, is therefore fixed in a precise position on the functional container, in particular the washing container.

The elevation or depression provided on the functional container, in particular the washing container, can be, for example, an embossing, a bead or the like. The elevation or depression can, for example, serve to stiffen the functional container, in particular the washing container. The functional container, in particular the washing container, can have any number of elevations and/or depressions. When producing the first insulation element for the thermal insulation of the functional container, in particular the washing container, the recess corresponding to the elevation of the functional container, in particular the washing container, is added or the elevation corresponding to the recess of the functional container, in particular the washing container, is formed.

"With play" means that a width and depth of the recess of the first insulation element for thermal insulation of the functional container, in particular the rinsing container, is greater than a width and height of the elevation of the functional container, in particular the rinsing container. The same applies accordingly to the recess of the functional container, in particular the rinsing container, and the elevation of the first insulation element for thermal insulation of the functional container, in particular the rinsing container. This simplifies the manufacture of the first insulation element for thermal insulation of the functional container, in particular the rinsing container, since no narrow tolerance range has to be maintained.

According to a first embodiment, the plastic material is a polyurethane, in particular a foamed polyurethane.

The polyurethane preferably has an open-pored structure. The plastic material is therefore compressible, so that air can escape from the plastic material when compressed. Other suitable plastic materials can also be used.

According to a second embodiment, the plastic material has viscoelastic properties.

Viscoelasticity refers to a partially elastic, partially viscous material behavior. Viscoelastic materials thus combine characteristics of solids and liquids.

According to a further embodiment, the insulation arrangement for thermal and/or acoustic insulation of the functional container, in particular the rinsing container, has a first insulation element for thermal insulation of the functional container, in particular the rinsing container, which is made of the plastic material, and a second insulation element for acoustic insulation of the functional container, in particular the rinsing container, wherein the first insulation element for thermal insulation of the Functional container, in particular rinsing container, is arranged between the functional container, in particular rinsing container, and the second insulation element for acoustic insulation of the functional container, in particular rinsing container.

The second insulation element for acoustically isolating the functional container, in particular the rinsing container, is optional. The second insulation element for acoustically isolating the functional container, in particular the rinsing container, can serve for acoustically isolating the functional container, in particular the rinsing container. The second insulation element can be referred to as an acoustic insulation element. Because the first insulation element for thermally isolating the functional container, in particular the rinsing container, is arranged between the functional container, in particular the rinsing container, and the second insulation element for acoustically isolating the functional container, in particular the rinsing container, the second insulation element for acoustically isolating the functional container, in particular the rinsing container, cannot extract any heat from the functional container, in particular the rinsing container. This improves the energy efficiency of the household appliance, in particular the household dishwasher. The second insulation element for acoustically isolating the functional container, in particular the rinsing container, serves in particular as a ground layer. The second insulation element for the acoustic insulation of the functional container, in particular the rinsing container, improves the acoustic properties of the insulation arrangement for the thermal and/or acoustic insulation of the functional container, in particular the rinsing container.

According to a further embodiment, the first insulation element for thermal insulation of the functional container, in particular the rinsing container, adheres to the second insulation element for acoustic insulation of the functional container, in particular the rinsing container, with a surface facing the second insulation element for acoustic insulation of the functional container, in particular the rinsing container, and can be separated from it without causing any damage.

Preferably, the first insulation element for thermal insulation of the functional container, in particular the rinsing container, is connected without adhesive to the second insulation element for acoustic insulation of the functional container, in particular the rinsing container. This means that the plastic material of the first Insulation element for thermal insulation of the functional container, in particular the rinsing container, adheres to the second insulation element for acoustic insulation of the functional container, in particular the rinsing container. Alternatively, the insulation elements for insulating the functional container, in particular the rinsing container, can also be permanently connected to one another.

According to a further embodiment, a separating layer is arranged between the first insulation element for the thermal insulation of the functional container, in particular the washing container, and the second insulation element for the acoustic insulation of the functional container, in particular the washing container, in order to non-destructively protect the first insulation element for the thermal insulation of the functional container, in particular the washing container to separate the second insulation element for acoustic insulation of the functional container, in particular the washing container.

The optional separating layer enables a non-destructive and residue-free separation of the first insulation element for the thermal insulation of the functional container, in particular the washing container, from the second insulation element for the acoustic insulation of the functional container, in particular the washing container. As a result, the materials of the first insulation element for the thermal insulation of the functional container, in particular the washing container, and of the second insulation element for the acoustic insulation of the functional container, in particular the washing container, can be reused more easily and efficiently. The separating layer preferably comprises a wax layer and/or a plastic film. The separating layer can in particular be a wax layer, a film or several films placed one on top of the other. The separating layer can be any layer which is suitable for separating the two insulation elements for insulating the functional container, in particular the washing container, from one another without leaving any residue and without causing any damage. The first insulation element for thermal insulation of the functional container, in particular the washing container, is connected without adhesive to the second insulation element for acoustic insulation of the functional container, in particular the washing container.

According to a further embodiment, the household appliance, in particular the household dishwasher, comprises an outer cladding provided on the outside of the functional container, in particular the washing container, the second insulation element for acoustically insulating the functional container, in particular Washing container, between the first insulation element for thermal insulation of the functional container, in particular washing container, and the outer cladding is arranged.

The outer cladding can be, for example, a sheet steel. The outer cladding can, for example, be part of a housing of the household appliance, in particular the household dishwasher.

According to a further embodiment, the outer cladding lies loosely on the second insulation element for acoustic insulation of the functional container, in particular the rinsing container, on or between the second insulation element for acoustic insulation of the functional container, in particular the rinsing container, and the outer cladding a separating layer is arranged in order to separate the outer cladding non-destructively from the second insulation element for acoustic insulation of the functional container, in particular the rinsing container.

As a result, the outer panel, which is preferably made of a metal material, can simply be returned to the recycling cycle after the end of the service life of the household appliance, in particular the household dishwasher. The separating layer can, as previously mentioned, comprise a wax layer, a film or several film layers.

Further possible implementations of the invention also include combinations of features or embodiments described above or below with respect to the exemplary embodiments that are not explicitly mentioned. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the invention.

Further advantageous refinements and aspects of the invention are the subject of the subclaims and the exemplary embodiments of the invention described below. The invention is further explained in more detail using preferred embodiments with reference to the accompanying figures.

Fig. 1

eine schematische perspektivische Ansicht einer Ausführungsform eines Haushaltsgeräts in Ausgestaltung einer Haushaltsgeschirrspülmaschine;

Fig. 2A

eine schematische Teilschnittansicht einer Ausführungsform eines Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 1 in einer Explosionsdarstellung;

Fig. 2B

eine schematische Teilschnittansicht einer weiteren Ausführungsform eines Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 1 in einer Explosionsdarstellung;

Fig. 3A

eine weitere schematische Teilschnittansicht des Spülbehälters gemäß Fig. 2A;

Fig. 3B

eine weitere schematische Teilschnittansicht des Spülbehälters gemäß Fig. 2B;

Fig. 4

eine schematische Schnittansicht einer Ausführungsform einer Form zum Herstellen eines Isolationselements zur thermischen Isolation des Funktionsbehälters, insbesondere Spülbehälters, für den Spülbehälter gemäß Fig. 2A oder Fig. 2B;

Fig. 5

eine weitere schematische Schnittansicht der Form gemäß Fig. 4;

Fig. 6

eine schematische Schnittansicht einer Ausführungsform eines Isolationselements zur thermischen Isolation des Funktionsbehälters, insbesondere Spülbehälters, für den Spülbehälter gemäß Fig. 2A oder Fig. 2B;

Fig. 7

ein schematisches Blockdiagramm einer Ausführungsform eines Verfahrens zum Herstellen der Haushaltsgeschirrspülmaschine gemäß Fig. 1; und

Fig. 8

ein schematisches Blockdiagramm einer Ausführungsform eines Verfahrens zum Demontieren einer mit Hilfe des Verfahrens gemäß Fig. 7 hergestellten Haushaltsgeschirrspülmaschine.

Show it

Fig. 1

a schematic perspective view of an embodiment of a household appliance in the form of a household dishwasher;

Fig. 2A

a schematic partial sectional view of an embodiment of a washing container for the household dishwasher Fig. 1 in an exploded view;

Fig. 2B

a schematic partial sectional view of a further embodiment of a washing container for the household dishwasher Fig. 1 in an exploded view;

Fig. 3A

a further schematic partial sectional view of the washing container according to Fig. 2A ;

Fig. 3B

a further schematic partial sectional view of the washing container according to Fig. 2B ;

Fig. 4

a schematic sectional view of an embodiment of a mold for producing an insulation element for thermal insulation of the functional container, in particular washing container, for the washing container according to Fig. 2A or Fig. 2B ;

Fig. 5

another schematic sectional view according to the shape Fig. 4 ;

Fig. 6

a schematic sectional view of an embodiment of an insulation element for thermal insulation of the functional container, in particular washing container, for the washing container according to Fig. 2A or Fig. 2B ;

Fig. 7

a schematic block diagram of an embodiment of a method for producing the household dishwasher according to Fig. 1 ; and

Fig. 8

a schematic block diagram of an embodiment of a method for dismantling a device using the method according to Fig. 7 manufactured household dishwasher.

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

The Fig. 1 shows a schematic perspective view of an embodiment of a household appliance 1 in the form of a household dishwasher. The household dishwasher 1 comprises a functional container in the form of a washing container 2, which can be closed, in particular watertight, by a door 3 is. 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. 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 space 4 for washing items to be washed.

Door 3 is in the Fig. 1 shown 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 floor 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, for example, the bottom 7 can be made of a plastic material.

The household dishwasher 1 further comprises at least one dishware holder 12 to 14. Preferably, several, for example three, dishware holders 12 to 14 can be provided, wherein the dishware holder 12 can be a lower dishware holder or a lower basket, the dishware holder 13 can be an upper dishware holder or an upper basket and the dishware holder 14 can be a cutlery drawer. As the Fig.1 further shows, the washware holders 12 to 14 are arranged one above the other in the washing container 2. Each washware holder 12 to 14 can be moved either into or out of the washing container 2. In particular, each washware holder 12 to 14 can be pushed or moved into the washing container 2 in an insertion direction E (arrow) and pulled or moved out of the washing container 2 in an extraction direction A (arrow) opposite to the insertion direction E (arrow).

The household appliance 1 according to the invention can generally be a household dishwasher, a household washing machine or a household tumble dryer. Depending on the type of household appliance, the functional container can be a washing container, a tub or a laundry drum. Such a household washing machine is, for example, from the publication EP 2 049 723 A1 known, whereas such a household tumble dryer is from the publication EN 33 45 303 A1 is known. The relevant content of these publications mentioned as examples is hereby made the subject of the present description.

The Fig. 2A shows a schematic partial sectional view of an embodiment of the rinsing container 2 in an exploded view. The Fig. 3A shows another partial sectional view of the rinsing tank 2. In the Fig. 2A and 3A only the side wall 11 of the washing container 2 is shown. The household dishwasher 1 comprises an insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2. The insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2 can be provided on the two side walls 10, 11, the ceiling 8, the rear wall 9 and/or the door 3. The insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2 can also be provided on the base 7. This means that the washing container 2 can be accommodated in the insulation arrangement 15 for thermal and/or acoustic insulation and can enclose or enclose it at least in sections. The insulation arrangement 15 for thermal and/or acoustic insulation is provided on the outside of the washing container 2. "Outside" here means facing away from the washing chamber 4.

The side wall 11 in particular includes an inside 16, which faces the washing chamber 4, and an outside 17, which faces away from the washing chamber 4. On the outside 17, the insulation arrangement 15 is provided for thermal and/or acoustic insulation of the washing container 2. The side wall 11 or the washing container 2 can have an elevation 18 on the outside. The elevation 18 bulges out of the outside 17 away from the washing compartment 4. The elevation 18 can be a bead or embossing impressed into the washing container 2. Any number of elevations 18 can be provided.

The side wall 11 can further have a recess 19 extending in the direction of the washing chamber 4. The recess 19 extends from the inner side 16 into the washing chamber 4. The recess 19 can, like the elevation 18, be a bead or embossing embossed into the washing container 2. For example, the elevation 18 and the recess 19 can be suitable for stiffening the side wall 11. Any number of recesses 19 can be provided. The elevation 18 and the recess 19 are optional. The elevation 18 and the recess 19 can be along a z-direction or depth direction z (arrow) and/or along a y-direction or height direction y (arrow) of the rinsing container 2. In the Fig. 2A and 3A Furthermore, an x-direction or width direction x (arrow) of the rinsing container 2 is shown. The directions x, y, z form a coordinate system of the rinsing container 2.

The insulation arrangement 15 for thermally and/or acoustically insulating the washing container 2 comprises a first insulation element 20 for thermally insulating the washing container 2. The first insulation element 20 for thermally insulating the washing container 2 is suitable for thermally and/or acoustically insulating the washing container 2. The first insulation element 20 can also be referred to as a thermal and/or acoustic insulation element. The first insulation element 20 for thermally insulating the washing container 2 has a first surface 21 which faces the outside 17 of the side wall 11. Furthermore, the first insulation element 20 for thermally insulating the washing container 2 comprises a second surface 22 facing away from the first surface 21. An optional recess 23 corresponding to the elevation 18 of the side wall 11 is provided on the first surface 21. The elevation 18 can engage in the recess 23 in a form-fitting manner. A positive connection is created by the interlocking or engagement of at least two connection partners, in this case the elevation 18 and the recess 23. Any number of recesses 23 can be provided.

Furthermore, an optional elevation 24 corresponding to the recess 19 of the side wall 11 is provided on the first surface 21. The elevation 24 can engage in the recess 19 in a form-fitting manner. The first insulation element 20 can thus be connected in a form-fitting manner to the rinsing container 2 for thermal insulation of the washing container 2. The form-fitting connection is subject to play. "Subject to play" means that a depth of the recess 23 in the width direction x (arrow) is greater than a height of the elevation 18 in the width direction x (arrow). Accordingly, a width of the recess 23 in the height direction y (arrow) is also greater than a width of the elevation 18 in the height direction y (arrow). The same applies to the recess 19 and the elevation 24.

The first insulation element 20 for thermal insulation of the washing container 2 is preferably made of a foamed plastic material, in particular of a foamed polyurethane. Preferably, the first insulation element 20 for the thermal insulation of the washing container 2 has an open-pored structure, so that the first insulation element 20 for the thermal insulation of the washing container 2 is compressible. The plastic material has the property that it has adhesive properties in a cured and/or crosslinked state. The adhesive properties are provided in particular on the surfaces 21, 22 of the first insulation element 20 for the thermal insulation of the washing container 2. The plastic material itself has the adhesive properties without the addition of an adhesive.

Because the first surface 21 has adhesive properties, the first insulation element 20 for thermal insulation of the washing container 2 can adhere to the washing container 2 or to the side wall 11 with the first surface 21 facing the washing container 2. The connection between the side wall 11 and the first insulation element 20 for thermal insulation of the washing container 2 is adhesive-free. This means that no adhesive layer is provided between the side wall 11 and the first insulation element 20 for thermal insulation of the washing container 2. As a result, the first insulation element 20 for thermal insulation of the washing container 2 can be detached from the side wall 11 without causing any damage and without leaving any residue. When the first insulation element 20 for thermal insulation of the washing container 2 is detached from the side wall 11, minor residues of the first insulation element 20 for thermal insulation of the washing container 2 can also remain on the side wall 11. However, these residues can easily be rubbed off.

The first insulation element 20 for thermally insulating the washing container 2 has a thickness d20. The thickness d20 is preferably 5 to 50 mm, more preferably 10 to 45 mm, more preferably 15 to 40 mm, more preferably 20 to 35 mm, more preferably 25 to 30 mm. A density of the first insulation element 20 for thermally insulating the washing container 2 is preferably 5 to 150 kg/m ³ , particularly preferably 50 to 120 kg/m ³ , more preferably 70 to 100 kg/m ³ . A specific thermal conductivity of the first insulation element 20 for the thermal insulation of the washing container 2 is preferably less than 0.1 W/(m*K), in particular less than 0.05 W/(m*K). The first insulation element 20 for the thermal insulation of the washing container 2 also has preferably a specific heat capacity of less than 2,000 J/(kg*K), preferably less than 1,600 J/(kg*K), more preferably less than 1,400 J/(kg*K).

The insulation arrangement 15 for the thermal and/or acoustic insulation of the washing container 2 includes, in addition to the first insulation element 20 for the thermal insulation of the washing container 2, a second insulation element 25 for the acoustic insulation of the washing container 2. The second insulation element 25 for the acoustic insulation of the washing container 2 can also be acoustic Insulation element are called. The second insulation element 25 for acoustically insulating the washing container 2 serves in particular as a mass layer and improves the acoustic properties of the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2. The second insulation element 25 for acoustically insulating the washing container 2 is also on the outside of the washing container 2 intended. The first insulation element 20 for thermal insulation of the washing container 2 is positioned between the washing container 2 and the second insulation element 25 for acoustically insulating the washing container 2. The second insulation element 25 for acoustically insulating the washing container 2 comprises a first surface 26 facing the first insulation element 20 for thermally insulating the washing container 2 and a second surface 27 facing away from the first surface 26. The second insulation element 25 for acoustically insulating the washing container 2 is preferably non-destructive can be separated from the first insulation element 20 for the thermal insulation of the washing container 2. However, the second insulation element 25 for acoustically insulating the washing container 2 can also be permanently connected to the first insulation element 20 for thermally insulating the washing container 2.

The second insulation element 25 for acoustically insulating the washing container 2 has a thickness d25. The thickness d25 is smaller than the thickness d20 of the first insulation element 20 for thermally insulating the washing container 2. For example, the thickness d25 can be 1 to 10 mm, preferably 1 to 8 mm, more preferably 1 to 5 mm, more preferably 1 to 3 mm, be. In particular, the first insulation element 20 for thermally insulating the washing container 2 prevents heat transfer from the washing container 2 to the second insulation element 25 for acoustically insulating the washing container 2. As a result, the second insulation element 25 for acoustically insulating the washing container 2 cannot extract any heat from the washing container 2. This increases the energy efficiency of the Household dishwasher 1 improved. In the second insulation element 25 for acoustically insulating the washing container 2, vibrations of the washing container 2 are converted into heat.

The first insulation element 20 for thermally insulating the washing container 2 is, as already mentioned, suitable for dampening vibrations. A loss factor of the plastic material of the first insulation element 20 for thermal insulation of the washing container 2 is high and tailored to use in the household dishwasher 1. In the present case, for physical oscillations of different nature, a “loss factor” is to be understood as the ratio of the lossy imaginary part to the loss-free real part of a complex quantity. The loss factor of the plastic material of the first insulation element 20 for the thermal insulation of the washing container 2 is in particular greater than 0.2, preferably greater than 0.4, at 20 ° C. Furthermore, the hysteresis loss according to the IFD method ("Hysteresis Loss - IFD") according to ASTM D3574 is preferably greater than 15%, preferably greater than 20%, in particular greater than 30%, and the recovery time ("Recovery Time") according to ASTM D3574 is preferably greater 2 s, preferably greater than 4, in particular greater than 5 s. In some cases, the vibrations are also passed on to the second insulation element 25 for the acoustic isolation of the washing container 2. The second insulation element 25 for the acoustic isolation of the washing container 2 essentially provides a surface mass due to its high density in the composite of the insulation arrangement 15 for the thermal and/or acoustic insulation of the washing container 2.

The second insulation element 25 for acoustically insulating the washing container 2 preferably has a significantly higher density than the first insulation element 20 for thermally insulating the washing container 2. The second insulation element 25 for acoustically insulating the washing container 2 is preferably made of a bitumen material, in particular of a metal and/or rock-filled bitumen material, or of a plastic material, in particular of a metal and/or rock-filled plastic material. For example, the second insulation element 25 can be made of a butyl material for acoustic insulation of the washing container 2. The second insulation element 25 for acoustically insulating the washing container 2 is in particular plate or mat-shaped. The second insulation element 25 for Acoustic insulation of the washing container 2 can also be a metal sheet, in particular a steel sheet.

The second insulation element 25 for acoustic insulation of the washing container 2 serves to dampen the noise of the washing container 2 or to dampen vibrations of the washing container 2. The second insulation element 25 for acoustic insulation of the washing container 2 preferably has the highest possible loss factor. The loss factor of the material of the second insulation element 25 for acoustic insulation of the washing container 2 is preferably greater than 0.08, more preferably greater than 0.15 at 20 °C. A density of the second insulation element 25 for acoustic insulation of the washing container 2 is preferably greater than 1,000 kg/m ³ .

The insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2 can further comprise an optional separating layer 28. The separating layer 28 is positioned between the first insulation element 20 for thermally insulating the washing container 2 and the second insulation element 25 for acoustically insulating the washing container 2, in particular between the surfaces 22, 26. The separating layer 28 can be a wax layer, a film, for example a polyethylene film or the like. The separating layer 28 can also comprise several films. The separating layer 28 enables a non-destructive and residue-free separation of the second insulation element 25 for the acoustic insulation of the washing container 2 from the first insulation element 20 for the thermal insulation of the washing container 2.

The household dishwasher 1 can also include an outer panel 29. The outer cladding 29 can be arranged on the outside on the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2, in particular on the outside on the second insulation element 25 for acoustically insulating the washing container 2. The outer cladding 29 can be a sheet steel, for example. The outer cladding 29 can be part of a housing of the household dishwasher 1. The outer cladding 29 can in particular also be part of the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2.

The outer panel 29 can comprise a first surface 30 facing the second insulation element 25 for acoustic insulation of the washing container 2 and a second surface 31 facing away from the second insulation element 25 for acoustic insulation of the washing container 2. The outer panel 29 can either be loosely mounted on the second insulation element 25 for acoustic insulation of the washing container 2 or connected to it in such a way that the outer panel 29 can be removed from the second insulation element 25 for acoustic insulation of the washing container 2 without leaving any residue and without causing any damage. For this purpose, a separating layer 32 can be provided between the second insulation element 25 for acoustic insulation of the washing container 2 and the outer panel 29. The separating layer 32 is optional. The separating layer 32 can be constructed identically to the separating layer 28.

The Fig. 2B shows a schematic partial sectional view of another embodiment of the washing container 2 in an exploded view. The Fig. 3B shows a further partial sectional view of the rinsing container 2. The rinsing container 2 according to the Fig. 2B and 3B differs from the rinsing tank 2 according to the Fig. 2A and 3A only in that the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2 only has the first insulation element 20 for thermal insulation of the washing container 2. The second insulation element 25 for acoustic insulation of the washing container 2 is in particular not provided.

The Fig. 4 to 7 show methods for producing a household dishwasher 1 as explained above and the Fig. 8 shows a procedure for dismantling one using the in the Fig. 4 to 7 Household dishwasher manufactured using the method shown 1. The 4 to 8 merely facilitate understanding of the invention.

The Fig. 4 to 7 show schematically a method for producing a household dishwasher 1 as previously explained. In a step S1, the washing container 2 is provided. Before or during the provision of the washing container 2 in step S1, it is made, for example, from a steel sheet which is formed, for example expanded and/or embossed.

In a step S2, the insulation arrangement 15 is provided for thermal and/or acoustic insulation of the washing container 2. Step S2 includes a Manufacture of the first insulation element 20 for thermal insulation of the washing container 2. For this purpose, as in the Fig. 4 and 5 shown, a mold 33, in particular a casting mold or casting mold, which has a lower mold part 34 and an upper mold part 35, filled with the plastic material. For example, as previously explained, the plastic material is a polyurethane foam. To produce the first insulation element 20 for the thermal insulation of the washing container 2, for example, two components are mixed and put into the mold 33, which has a cavity 36 ( Fig. 5 ), which represents a negative of an external geometry of the first insulation element 20 for the thermal insulation of the washing container 2. The plastic material can then foam under ambient pressure or under vacuum and completely fill the cavity 36.

For example, the cavity 36 includes an elevation 37, which forms the depression 23 on the first insulation element 20 for the thermal insulation of the washing container 2, and a depression 38, which forms the elevation 24 of the first insulation element 20 for the thermal insulation of the washing container 2. After the plastic material has completely hardened and/or crosslinked, the mold 33, as in the Fig. 5 shown, opened and the first insulation element 20 for thermal insulation of the washing container 2 is removed from the mold. The surfaces 21, 22 continue to be adhesive even after the plastic material of the first insulation element 20 has completely hardened and/or networked for the thermal insulation of the washing container 2.

In order to protect the surfaces 21, 22 or at least the first surface 21 from dust and/or contamination after step S2, the first insulation element 20 can be used for thermal insulation of the washing container 2, as shown in the Fig.6 shown, packaged in a protective film 39. The protective film 39 can be bag-shaped and can contain the entire first insulation element 20 for thermal insulation of the washing container 2. Alternatively, the protective film 39 can also be applied as a peel-off film to one of the surfaces 21, 22 or to both surfaces 21, 22.

In a step S3, after removing the protective film 39 from at least the first surface 21, the first insulation element 20 for thermally insulating the washing container 2 is attached to the outside of the washing container 2, so that the first insulation element 20 for thermally insulating the washing container 2 with its first surface 21 on that Washing container 2 adheres, but can be separated from it non-destructively and without leaving any residue.

Also in step S2, the second insulation element 25 for the acoustic insulation of the washing container 2, for example as a bitumen mat, is optionally provided and attached to the outside of the washing container 2 after or during step S3 in such a way that the first insulation element 20 for the thermal insulation of the washing container 2 between the washing container 2 and the second insulation element 25 for acoustic insulation of the washing container 2 is arranged. Alternatively, the second insulation element 25 for acoustically insulating the washing container 2 can also be connected to the first insulation element 20 for thermally insulating the washing container 2 before the first insulation element 20 for thermally insulating the washing container 2 is attached to the outside of the washing container 2 in step S3. This means that the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2 can be pre-assembled and attached as a whole to the outside of the washing container 2 in step S3. As mentioned above, the second insulation element 25 can also be dispensed with for acoustically insulating the washing container 2.

At one in the Fig. 8 The method shown for dismantling a device using the method shown in the Fig. 4 to 7 The household dishwasher 1 produced using the method shown is separated from the washing container 2 in a non-destructive manner in a step S10. Preferably, no or only minor residues of the first insulation element 20 for the thermal insulation of the washing container 2 remain stuck to the washing container 2, so that the washing container 2 can be fed into the recycling cycle for recycling without prior cleaning. In an optional step S20, the second insulation element 25 for acoustically insulating the washing container 2 is separated from the first insulation element 20 for thermally insulating the washing container 2. Here, for example, the separating layer 28 can enable a residue-free and non-destructive detachment of the second insulation element 25 for the acoustic isolation of the washing container 2 from the first insulation element 20 for the thermal insulation of the washing container 2. The washing container 2, the insulation elements 20, 25 for insulating the washing container 2 and the outer cladding 29 can thus be removed after the end of the service life of the Household dishwasher 1 can be fed separately from each other and without prior cleaning into the recycling cycle for recycling.

By using the adhesive properties of the surfaces 21, 22 of the first insulation element 20 for thermal insulation of the washing container 2, a process step, for example the application of an adhesive layer to the first surface 21, can be saved in the manufacture of the household dishwasher 1. This reduces the costs of manufacturing the household dishwasher 1. With the help of the first insulation element 20 for thermal insulation of the washing container 2, an acoustically advantageous connection of the second insulation element 25 for acoustic insulation of the washing container 2 to the washing container 2 is possible. This can improve the acoustic properties of the entire household dishwasher 1.

With the help of the adhesive first surface 21, the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2 can be permanently fixed to the washing container 2 without additional precautions. A large part of the first surface 21 of the first insulation element 20 for thermal insulation of the washing container 2 is in direct contact with the outside 17 of the washing container 2. The separate manufacture of the washing container 2 and the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2 results in advantages in the manufacture of the domestic dishwasher 1. Because the positive connection between the first insulation element 20 for thermal insulation of the washing container 2 and the washing container 2 has play, the first insulation element 20 for thermal insulation of the washing container 2 can be manufactured with large tolerances. This reduces the costs of manufacturing the domestic dishwasher 1.

Because the first insulation element 20 for thermal insulation of the washing container 2 can be detached from the washing container 2 without leaving any residue and without causing any damage, the washing container 2 and the first insulation element 20 for thermal insulation of the washing container 2 can be recycled separately from one another. For example, the washing container 2 can be melted down without prior cleaning. Because the second insulation element 25 for acoustic insulation of the washing container 2 can be detached from the first Insulation element 20 for thermal insulation of the rinsing container 2 can be separated without residue and without destruction, the material of the second insulation element 25 for acoustic insulation of the rinsing container 2 can also be recycled separately from the material of the first insulation element 20 for thermal insulation of the rinsing container 2. If the insulation arrangement 15 for thermal and/or acoustic insulation of the rinsing container 2 is manufactured as a pre-assembled one-piece arrangement, the insulation arrangement 15 for thermal and/or acoustic insulation of the rinsing container 2 can be completely removed from the rinsing container 2 and recycled. The individual components of the insulation arrangement 15 for thermal and/or acoustic insulation of the rinsing container 2 can be separated from one another and fed into the recycling cycle without contamination.

Advantageously, the outer cladding 29 can be easily detachably connected to the insulation arrangement 15 for thermal and/or acoustic insulation of the washing container 2, so that the outer cladding 29, which is mostly made of metal, can also be returned to the recycling cycle. The separation of the components of the insulation arrangement 15 for the thermal and/or acoustic insulation of the washing container 2 from one another can be simplified with the aid of the separating layers 28, 32. This makes it easier to separate and recycle the materials. The individual components of the household dishwasher 1 can be fed into the recycling cycle separately from one another. Due to the residue-free separation, there is little contamination, which allows high-quality reuse of the materials. This significantly simplifies the recycling process.

Although the present invention has been described using exemplary embodiments, it can be modified in many ways.

Reference symbols used

1

household appliance; household dishwasher

2

functional container; Rinse container

3

door

4

Washroom

5

Swivel axis

6

loading opening

7

Floor

8th

Ceiling

9

Back wall

10

Side wall

11

Side wall

12

Dishwasher holder; lower dishwasher holder; lower basket

13

storage of items to be washed; upper washware holder; Upper basket

14

storage of items to be washed; Cutlery drawer

15

Insulation arrangement for thermal and/or acoustic insulation of the functional container

16

inside

17

Outside

18

increase

19

deepening

20

(First) insulation element for thermal insulation of the functional container

21

surface

22

surface

23

deepening

24

increase

25

Second insulation element for acoustic insulation of the functional container

26

surface

27

surface

28

Separating layer

29

Exterior cladding

30

surface

31

surface

32

separating layer

33

shape

34

Mould bottom

35

Form top

36

cavity

37

increase

38

deepening

39

Protective film

A

Extraction direction (arrow)

d20

thickness

d25

thickness

E

Insertion direction (arrow)

S1

Step

S2

Step

S3

Step

S10

Step

S20

Step

x

Width direction (arrow)

y

Altitude direction (arrow)

e.g

Depth direction (arrow)

Claims (8)

1. Household appliance (1), in particular a household dishwasher, having a functional cavity (2), in particular having a dishwasher cavity, and an insulation arrangement (15) for thermal and/or acoustic insulation of the functional cavity (2), in particular of the dishwasher cavity, is provided on the outside of the functional cavity (2), in particular on the outside of the dishwasher cavity, wherein the insulation arrangement (15) for thermal and/or acoustic insulation of the functional cavity (2), in particular dishwasher cavity, has a first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, and wherein the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, is manufactured from one piece of a synthetic material,
   characterised in that

   - the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, has adhesive properties in a cured and/or cross-linked state with the result that the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, adheres by means of a surface (21) that is facing the functional cavity (2), in particular facing the dishwasher cavity, to the functional cavity (2), in particular to the dishwasher cavity, and said insulation element (20) can be separated from said functional cavity (2), in particular from said dishwasher cavity, in a non-destructive manner,

   - the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, is connected in a positive-locking manner to the functional cavity (20), in particular to the dishwasher cavity,

   - the functional cavity (2), in particular dishwasher cavity, has on the outside an elevation (18) which engages in a positive-locking manner in a depression (23) that is provided on the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, and/or that the functional cavity (2), in particular the dishwasher cavity, has on the outside a depression (19) into which an elevation (24) that is provided on the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, engages in a positive-locking manner and

   - the positive-locking connection between the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, and the functional cavity (2), in particular dishwasher cavity, has an amount of play.
2. Household appliance (1) according to claim 1, characterised in that the synthetic material is a polyurethane, in particular a foamed polyurethane.
3. Household appliance (1) according to claim 1 or 2, characterised in that the synthetic material has viscoelastic properties.
4. Household appliance (1) according to 1, 2 or 3, characterised in that the insulation arrangement (15) for thermal and/or acoustic insulation of the functional cavity (2), in particular dishwasher cavity, has the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, which is manufactured from the synthetic material, and a second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, wherein the first insulation element (20) for thermal insulation of the functional cavity (20), in particular dishwasher cavity, is arranged between the functional cavity (2), in particular the dishwasher cavity, and the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity.
5. Household appliance (1) according to claim 4, characterised in that the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, adheres by means of a surface (22) that is facing the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, to the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, and said first insulation element (20) can be separated from said second insulation element (25) in a non-destructive manner.
6. Household appliance (1) according to claim 4, characterised in that a separation layer (28) is arranged between the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, and the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, in order to separate the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, from the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, in a non-destructive manner.
7. Household appliance (1) according to one of the preceding claims, characterised in that an external cladding (29) is provided on the outside of the functional cavity (2), in particular on the outside of the dishwasher cavity, wherein the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, is arranged between the first insulation element (20) for thermal insulation of the functional cavity (2), in particular dishwasher cavity, and the external cladding (29).
8. Household appliance (1) according to claim 7, characterised in that the external cladding (29) lies loosely on the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, or that a separation layer (32) is arranged between the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, and the external cladding (29) in order to separate the external cladding (29) from the second insulation element (25) for acoustic insulation of the functional cavity (2), in particular dishwasher cavity, in a non-destructive manner.

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