EP3863825A2

EP3863825A2 - Method and household appliance

Info

Publication number: EP3863825A2
Application number: EP19782977.3A
Authority: EP
Inventors: Alexander Sing; Johannes Jall; Heiko Fritz; Andreas Hitzler
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2018-10-12
Filing date: 2019-10-01
Publication date: 2021-08-18
Also published as: WO2020074310A2; US20210386267A1; DE102018217545A1; WO2020074310A3; CN112839788A

Abstract

The invention relates to a method for producing an insulation arrangement (15) for a functional container (2), in particular a washing compartment, of a domestic appliance (1), in particular of a domestic dishwasher, comprising the following steps: a) foaming (S100) a plastic material to form a foam block (33), b) dividing (S200) the foam block (33) into blanks (35), and c) shaping (S300) each blank (35) with the aid of a forming press (36) to form the insulation arrangement (15).

Description

Procedure and household appliance

The present invention relates to a method for producing an insulation arrangement for a functional container, in particular a washing container, of a household appliance, in particular a household dishwasher, a further method for

Manufacture of an insulation arrangement for a functional container, in particular

Rinsing container, of a household appliance, in particular a household dishwasher, a method for producing a household appliance, in particular one

Household dishwasher, and a household appliance, especially one

Household dishwasher.

Bitumen mats can be applied to the outside of the washing tub for acoustic insulation of a washing tub of a household dishwasher. These bitumen mats can, for example, be glued onto the outside of the washing container with the aid of a hot melt adhesive. Such bitumen mats, however, have a high heat absorption capacity and conduct the absorbed heat away from the washing container. If the proportion of the surface of the washing compartment covered with the bitumen mats is reduced, the energy consumption of the household dishwasher can be reduced. However, this reduction in the area covered with the bitumen mats has the consequence that the noise emission of the household dishwasher increases.

EP 3 092 935 A1 discloses an arrangement for the thermal and acoustic insulation of a receiving area of a household dishwasher. The arrangement comprises a first insulation element for thermal insulation of the

Recording area and a second insulation element for acoustically isolating the receiving area, wherein the first insulation element is arranged between the receiving area and the second insulation element and wherein the first insulation element is directly foamed onto the receiving area.

Against this background, it is an object of the present invention to provide an improved method for producing a functional container, in particular

Rinsing container, a household appliance, especially one

Household dishwasher, to provide. Accordingly, a method for producing an insulation arrangement for a functional container, in particular a washing container, of a household appliance, in particular a domestic dishwasher, is proposed. The method comprises the steps: a) foaming a plastic material into a foam block, b) dividing the

Foam blocks into blanks, and c) forming a blank with the help of a forming press to form the insulation arrangement.

With the help of the above method, short cycle times of the forming press can be achieved in comparison to the production of the insulation arrangement as a molded foam part. Various raw materials can also be processed for the plastic material. This extends the area of application of the insulation arrangement.

The plastic material can have several components, which are mixed to produce the insulation element and react chemically with one another in such a way that the plastic material completely hardens and / or crosslinks. The forming press preferably comprises a cavity which has a negative geometry

Isolation arrangement maps. The insulation arrangement preferably comprises

different insulation elements, namely a first insulation element and a second insulation element. However, the isolation arrangement can only be the first

Have insulation element. This means that the second insulation element is optional.

According to one embodiment, the insulation arrangement has a first insulation element and a second insulation element, the second one before step c)

Insulation element is inserted into the forming press, and in step c) the one blank is formed into the first insulation element and connected to the second insulation element.

In particular, the first insulation element is in an assembled state

Insulation arrangement between the functional container, in particular rinsing container, and the second insulation element. The second insulation element can be a bitumen mat. According to a further embodiment, the first insulation element is connected to the second insulation element with the aid of an adhesive.

The adhesive is optional. The adhesive can be used as an adhesive layer on the second

Insulation element are applied. The adhesive can be a hot melt adhesive.

According to a further embodiment, the plastic material is foamed in step a) under ambient pressure.

The plastic material can also be foamed under vacuum or under negative pressure. The particular advantage here is the low density of the foamed plastic material that can be achieved. It is therefore a low density at the

Insulation arrangement achievable, whereby their thermal insulation properties are improved. The low density also means that raw materials are used less. Little material results in a reduced absolute heat capacity. A low heat capacity results in additional heat savings since material does not have to be heated.

According to a further embodiment, the plastic material is foamed in an open mold in step a).

Alternatively, the foam block can also be produced in a continuous process without such a mold.

Furthermore, a further method for producing an insulation arrangement for a functional container, in particular a washing container, of a household appliance, in particular a domestic dishwasher, is proposed. The method comprises the steps: a) inserting an insulation element into a mold, b) introducing a liquid

Plastic material in the mold to attach another to the insulation element

Foam insulation element and thus form the insulation arrangement, and c) demolding the insulation arrangement.

The insulation arrangement is thus a composite component, which as a whole on the

Functional containers, in particular rinsing containers, can be attached. Especially the second insulation element is inserted into the mold in step a). In particular, in step b) the first insulation element is foamed onto the second insulation element.

According to one embodiment, the insulation element is removed before step a)

surface treated.

The surface treatment can be, for example, a plasma treatment

Corona treatment or the like. An additional coating of one of the insulation elements can also be provided. This can be applied to the second insulation element in the production process, for example.

Furthermore, a method for producing a household appliance, in particular a household dishwasher, is proposed. The method comprises the steps: a) providing a functional container, in particular a washing container, b) providing a first insulation element, c) providing a second insulation element, and d) attaching the first insulation element and the second one after the other

Isolation element on the functional container, in particular rinsing container, such that the first insulating element is arranged between the functional container, in particular rinsing container, and the second insulating element.

The insulation arrangement is thus a multi-part arrangement. This results in a high degree of flexibility in production. Furthermore, the connection of the first insulation element to the functional container, in particular the washing container, is improved. Different variants of the household appliance, in particular the household dishwasher, can thus be generated more easily.

According to one embodiment, the second insulation element is connected to an outer cladding before step d).

The outer lining can be part of a housing of the household appliance, in particular the household dishwasher. Furthermore, a household appliance, in particular a domestic dishwasher, with a functional container, in particular a washing container, and an insulation arrangement for thermal and / or acoustic insulation of the functional container, in particular a washing container, is proposed, the insulation arrangement having a first insulation element and a second insulation element, the first insulation element is arranged between the functional container, in particular the washing container, and the second insulation element, the insulation arrangement partially covering the functional container, in particular the washing container, and the functional container, in particular

Rinsing container, partially covered only by a further second insulation element.

The second insulation element is in particular a bitumen mat. That is, the

Functional container, in particular rinsing container, is partly only from the second insulation element and partly from the insulation arrangement, both of which

Has insulation elements covered.

Further possible implementations of the invention also include combinations of previously or hereinafter not explicitly mentioned with respect to FIG

Embodiments described features or embodiments. 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 explained in more detail below on the basis of preferred embodiments with reference to the attached figures.

Show it

Fig. 1 is a schematic perspective view of an embodiment of a

Household appliances in the form of a household dishwasher;

2A is a schematic partial sectional view of an embodiment of a

Rinsing container for the household dishwasher according to Figure 1 in an exploded view. Fig. 2B is a schematic partial sectional view of another embodiment of a

Rinsing container for the household dishwasher according to Figure 1 in an exploded view.

3A shows a further schematic partial sectional view of the rinsing container according to FIG.

2A;

3B shows a further schematic partial sectional view of the rinsing container according to FIG.

2 B;

Fig. 4 is a schematic sectional view of an embodiment of a

Isolation element for the household dishwasher according to FIG. 1;

Fig. 5 is a schematic exploded view of an embodiment of a

Isolation arrangement for the household dishwasher according to FIG. 1;

FIG. 6 shows a schematic sectional view of the insulation arrangement according to FIG. 5;

Fig. 7 is a schematic sectional view of an embodiment of a mold for

Manufacture of the insulation arrangement according to FIG. 5;

FIG. 8 shows a further schematic sectional view of the mold according to FIG. 7;

FIG. 9 shows a further schematic sectional view of the mold according to FIG. 7;

FIG. 10 shows a further schematic sectional view of the mold according to FIG. 7;

Fig. 1 1 is a schematic block diagram of an embodiment of a method for manufacturing an insulation arrangement for the

Household dishwasher according to Fig. 1;

Fig. 12 is a schematic exploded view of another embodiment of a

Isolation arrangement for the household dishwasher according to FIG. 1;

13 shows a further schematic exploded view of the insulation arrangement according to FIG

Fig. 12;

14 shows a further schematic exploded view of the insulation arrangement according to FIG

Fig. 12;

15 shows a schematic sectional view of the insulation arrangement according to FIG. 12;

16 shows a schematic block diagram of an embodiment of a method for producing the household dishwasher according to FIG. 1;

Fig. 17 is a schematic sectional view of an embodiment of a mold for

Making a foam block;

18 shows a further sectional view of the mold according to FIG. 17;

19 is a schematic sectional view of an embodiment of a

Foam blocks; 20 shows a schematic sectional view of an embodiment of a forming press;

21 shows a further schematic sectional view of the forming press;

22 shows a further schematic sectional view of the forming press; and

23 is a schematic block diagram of another embodiment of a

Method for producing an insulation arrangement for the

Household dishwasher according to FIG. 1.

In the figures, elements that are the same or have the same function have been provided with the same reference symbols, unless stated otherwise.

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 by a door 3, in particular in a watertight manner. For this purpose, a sealing device can be provided between the door 3 and the washing container 2. The washing compartment 2 is preferably cuboid. The washing container 2 can be arranged in a housing of the domestic dishwasher 1. The washing container 2 and the door 3 can form a washing compartment 4 for washing dishes.

The door 3 is shown in its open position in FIG. 1. 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 compartment 2 can be closed or opened. The washing compartment 2 has a base 7, a cover 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 bottom 7, the ceiling 8, the rear wall 9 and the side walls 10, 1 1 can, for example, from one

Stainless steel sheet to be made. Alternatively, the base 7 can be made of a plastic material, for example.

The household dishwasher 1 also has at least one washware receptacle 12 to 14. Preferably, several, for example three, washware receptacles 12 to 14 can be provided, the washware receptacle 12 being a lower washware receptacle or a lower basket, the washware receptacle 13 can be an upper washware receptacle or an upper basket and the washware receptacle 14 can be a cutlery drawer. As FIG. 1 also shows, the items to be washed 12 to 14 are arranged one above the other in the washing container 2. Each washware receptacle 12 to 14 can either be moved into or out of the washing tub 2. In particular, each washware receptacle 12 to 14 can be pushed or moved into the washing compartment 2 in an insertion direction E (arrow) and can be pulled out or pulled out of the washing compartment 2 in a pull-out direction A (arrow) against the insertion direction E (arrow).

The household appliance 1 according to the invention can in general

Household dishwasher, a household washing machine or a

Household clothes dryer. Depending on the type of household appliance, the functional container can be a rinsing container, a tub or a washing drum. Such a household washing machine is known, for example, from publication EP 2 049 723 A1, whereas such a household laundry dryer is known from publication DE 33 45 303 A1. The relevant content of these exemplary publications is hereby made the subject of the present description.

2A shows a schematic partial sectional view of an embodiment of the rinsing container 2 in an exploded view. 3A shows another

Partial sectional view of the washing container 2. Only the side wall 11 of the washing container is shown in FIGS. 2A and 3A. The household dishwasher 1 comprises one

Insulation arrangement 15 for thermal and / or acoustic insulation of the washing compartment 2. The insulation arrangement 15 can be provided on the two side walls 10, 11, the ceiling 8, rear wall 9 and / or the door 3. The insulation arrangement 15 can also be provided on the bottom 7. This means that the washing container 2 can be accommodated in the insulation arrangement 15 and enclose or enclose it at least in sections. The insulation arrangement 15 is provided on the outside of the washing compartment 2. "Outside" here means facing away from the wash cabinet 4.

The side wall 11 comprises in particular an inner side 16 which faces the washing area 4 and an outer side 17 which faces away from the washing area 4. The insulation arrangement 15 is provided on the outside 17. The insulation arrangement 15 comprises a first insulation element 18. The first insulation element 18 can also be a thermal and / or acoustic insulation element are called. The first insulation element 18 has a first surface 19 which faces the outside 17 of the side wall 11. Furthermore, the first insulation element 18 comprises a second surface 20 facing away from the first surface 19. The first

Insulation element 18 is preferably made from a foamed plastic material, in particular from a foamed polyurethane.

The first insulation element 18 preferably has an open-pore structure, so that the first insulation element 18 can be compressed. The plastic material has the property that it is in a hardened and / or cross-linked state

preferably has adhesive or preferably adhesive properties. The preferred adhesive properties are provided in particular on the surfaces 19, 20 of the first insulation element 18. The plastic material itself has the preferred adhesive properties without the addition of an adhesive.

Because the first surface 19 preferably has adhesive properties, the first insulation element 18 with the first surface 19 facing the washing container 2 can adhere to the washing container 2 or to the side wall 11. The connection between the side wall 1 1 and the first insulation element 18 is adhesive-free. That is, between the side wall 1 1 and the first

Insulation element 18 is not provided with an adhesive layer. As a result, the first insulation element 18 can be detached from the side wall 11 in a non-destructive and residue-free manner. However, slight residues can also remain on the washing compartment 2. That is, the first insulation element 18 can be easily removed from the

Detach the washing container 2, but residues can remain on the washing container 2. These can be removed by rubbing. In particular, the first

Isolation element 18 without tools, such as solvents, from which

Rinsing container 2 are separated. The connection between the first insulation element 18 and the washing container 2 can be a weakly adhesive adhesive connection.

The first insulation element 18 has a thickness d18. The thickness d 18 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 p18 of the first insulation element 18 is preferably 5 to 150 kg / m ³ , particularly preferably 50 to io

120 kg / m ³ , more preferably 70 to 100 kg / m ³ . A specific thermal conductivity A18 of the first insulation element 18 is preferably less than 0.1 W / (m ^* K), in particular less than 0.05 W / (m ^* K). The first insulation element 18 also preferably has a specific heat capacity c18 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) .

In addition to the first insulation element 18, the insulation arrangement 15 comprises a second insulation element 21 for acoustic insulation of the washing compartment 2. The second

Isolation element 21 can also be referred to as an acoustic isolation element.

The second insulation element 21 serves in particular as a ground layer and improves the acoustic properties of the insulation arrangement 15. The second insulation element 21 is also provided on the outside of the washing compartment 2. The first is

Insulation element 18 positioned between the washing container 2 and the second insulation element 21. The second insulation element 21 comprises a first surface 22 facing the first insulation element 18 and a second surface 23 facing away from the first surface 22. The second insulation element 21 can preferably be separated from the first insulation element 18 in a non-destructive manner. However, the second insulation element 21 can also be permanently connected to the first insulation element 18.

The second insulation element 21 has a thickness d21. The thickness d21 is smaller than the thickness d 18 of the first insulation element 18. For example, the thickness d21 can be 1 to 10 mm, preferably 1 to 8 mm, more preferably 1 to 5 mm, more preferably 1 to 3 mm. In particular, the first insulation element 18 prevents one

Heat transfer from the washing container 2 to the second insulation element 21.

As a result, the second insulation element 21 cannot extract heat from the washing compartment 2. As a result, the energy efficiency of the domestic dishwasher 1 is improved. In the second insulation element 21 vibrations of the

Rinsing container 2 converted into heat.

As already mentioned, the first insulation element 18 is suitable for

Dampen vibrations. A loss factor of the plastic material of the first

Isolation element 18 is high and adapted for use in the household dishwasher 1. A "loss factor" in the case of physical

Vibrations of different nature the ratio of the lossy imaginary part to understand the lossless real part of a complex size. The loss factor of the plastic material of the first insulation element 18 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 Loess - 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 part, the vibrations are also passed on to the second insulation element 21. The second insulation element 21 is in the composite of

Isolation arrangement 15 essentially has a basis weight due to its high density.

The second insulation element 21 preferably has a significantly higher density than the first insulation element 18. The second insulation element 21 is preferably made from a bitumen material, in particular from a metal and / or rock-filled bitumen material, or from a plastic material, in particular from a metal and / or rock-filled plastic material. For example, the second insulation element 21 can be made from a butyl material. The second insulation element 21 is in particular plate or mat-shaped. The second insulation element 21 can also be a metal sheet, in particular a steel sheet.

The second insulation element 21 serves to deaden the rinsing container 2

or the damping of vibrations of the washing container 2. The second insulation element 21 preferably has the highest possible loss factor. The loss factor of the material of the second insulation element 21 at 20 ° C. is preferably greater than 0.08, more preferably greater than 0.15. A density p21 of the second

Isolation element 21 is preferably greater than 1,000 kg / m ³ .

The insulation arrangement 15 can furthermore comprise an optional separating layer 24. The separation layer 24 is between the first insulation element 18 and the second

Insulation element 21, in particular positioned between the surfaces 20, 22. The separating layer 24 can be a wax layer, a film, for example a polyethylene film, or the like. The separating layer 24 can also comprise several foils. The separation layer 24 enables the second insulation element 21 to be separated from the first insulation element 18 in a non-destructive and residue-free manner. The separation layer 24 is, as mentioned above, optional, so that the first insulation element 18 and the second insulation element 21 can also be inseparably connected to one another.

For example, the first insulation element 18 can be connected directly to the second

Insulation element 21 be foamed. Furthermore, an adhesive layer can also be provided between the insulation elements 18, 21.

The household dishwasher 1 can further comprise an outer panel 29. The outer cladding 29 can be arranged on the outside on the insulation arrangement 15, in particular on the outside on the second insulation element 25. The outer cladding 29 can be a steel sheet, for example. The outer lining 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.

The outer lining 29 can have a first surface 30 facing the second insulation element 25 and a second surface facing away from the second insulation element 25

Cover surface 31. The outer lining 29 can either lie loosely on the second insulation element 25 or be connected to it in such a way that the

Outer casing 29 residue-free and non-destructive from the second

Isolation element 25 can be solved. You can do this between the second

Insulation element 25 and the outer lining 29, a separating layer 32 may be provided. The separation layer 32 is optional. The separating layer 32 can be constructed identically to the separating layer 28.

The insulation arrangement 15 can also be designed such that it does not have the first insulation element 18, at least in sections. For example, the insulation arrangement 15 on the side wall 10 can have the first insulation element 18 and the second insulation element 21. On the other hand, the second insulation element 21, for example as a bitumen mat, can be attached directly to the washing compartment 2 on the side wall 11. The same applies to the floor 7, the ceiling 8 and the rear wall 9. For example, the insulation arrangement 15 with the first insulation element 18 and the second insulation element 21 and partly only the second insulation element 21 can also be provided on the side wall 11. In this way, a both quiet and energy-efficient household dishwasher 1 can be implemented at an inexpensive price. This also results in advantages in terms of production technology. There are also advantages over the life of the

Household dishwasher 1.

2B shows a schematic partial sectional view of a further embodiment of the rinsing container 2 in an exploded view. 3B shows another

Partial sectional view of the washing container 2. The washing container 2 according to FIGS. 2B and 3B differs from the washing container 2 according to FIGS. 2A and 3A only in that the insulation arrangement 15 has only the first insulation element 18. The second insulation element 21 is in particular not provided.

4 to 10 show the manufacture of the insulation arrangement 15 as a composite component. For this purpose, the second insulation element 21 is first provided, for example as a bitumen mat (FIG. 4). The surface 22 of the second insulation element 21 facing the first insulation element 18 is then modified such that a permanent connection between the first insulation element 18 and the second

Isolation element 21 can be achieved. The separation layer 24 is in this

Embodiment of the insulation arrangement 15 is not provided.

The surface treatment of the surface 22 can be, for example

Plasma treatment, corona treatment or the like. An additional coating of one of the insulation elements 18, 21 can also be provided. This can be applied to the second insulation element 21 in the production process, for example. After a contour of the second insulation element 21 has been produced, it is inserted into a mold 29 shown in FIGS. 7 to 10.

The mold 29 is in particular a casting mold or casting mold and comprises one

Mold bottom part 30 and a mold top part 31. The mold 29 comprises a cavity 32, which is a negative of a geometry of the first insulation element 18. After inserting the second insulation element 21 into the mold 29, the liquid plastic material is filled in, as shown in FIG. 8. For example, as previously explained, the plastic material is a polyurethane foam. During the curing process of the first insulation element 18, both insulation elements 18, 21 enter into a permanent connection. To produce the insulation arrangement 15 or the first insulation element 18, for example, two components are mixed and filled into the mold 29. The plastic material can then foam under ambient pressure or under vacuum and completely fill the cavity 32. After the plastic material has completely hardened and / or crosslinked, the mold 29, as shown in FIG.

10, opened and the first insulation element 18 or the

Isolation arrangement 15 is removed from the mold. The insulation arrangement 15 can now be taken from the form 29 as a composite component. Furthermore, further layers can be processed in the process, the resulting insulation arrangement 15 then having a number of different individual parts, but ultimately being able to be further processed and handled as one part.

A simpler handling of the insulation arrangement 15 is thus possible. Prefabrication of the insulation arrangement 15 is also possible. The washing container 2 can be manufactured separately from the insulation arrangement 15, since the first insulation element 18 is not directly foamed onto the washing container 2. Later generation of variants is possible. The manufacture of the insulation arrangement 15 and the attachment of the same to the rinsing container 2 can easily be done in the manufacture of the

Household dishwasher 1 can be integrated. Several layers or individual parts can be combined into a one-part arrangement in an upstream process. This enables easier handling in

downstream process steps.

11 shows a schematic block diagram of the previously explained method. In a step S1, the second insulation element 21 is inserted into the mold 29. In a step S2, the liquid plastic material is introduced into the mold 29 in order to foam the first insulation element 18 onto the second insulation element 21 and thus form the insulation arrangement 15. In a step S3, the insulation arrangement 15 is removed from the mold.

12 to 15 show a further embodiment of a method for producing an insulation arrangement 15 as explained above. Here, the insulation arrangement 15 is not designed as a prefabricated composite component. Rather, the insulation arrangement 15 is in several parts. As shown in FIG. 12 using the example of door 3, the insulation elements can 18, 21 and the outer lining 25 can be provided as individual parts. As shown in FIGS. 13 and 14, the individual parts can now be partially assembled.

For example, the first insulation element 18 can be attached to a door panel of the door 3 on the outside and the second insulation element 21 can be attached to the

Outer lining 25 are attached. The preassembled modules are then joined together, as shown in FIG. 15. This results in a high degree of flexibility in production. Furthermore, the connection of the first insulation element 18 to the washing container 2 is improved. Different variants of the

Household dishwasher 1 can be generated more easily.

16 shows a schematic block diagram of one as previously explained

Procedure. In a step S10, the washing container 2 is provided. The first insulation element 18 is provided in a step S20. In a step S30, the second insulation element 21 is provided. In a further step S40, the first insulation element 18 and the second insulation element 21 are successively on the

Rinsing container 2 attached such that the first insulation element 18 is arranged between the washing container 2 and the second insulation element 21.

17 to 22 show a further embodiment of a method for producing an insulation arrangement 15 as explained above. The plastic material of the first insulation element 18 is first foamed in a mold 34 as a foam block 33. For this purpose, the still liquid plastic material is poured into the mold 34 (FIG. 17). Here, the plastic material can foam freely under ambient pressure, as a result of which a particularly low density and thus particularly good thermal insulation properties can be achieved. A plastic material is used which is specially tailored to the requirements in a household dishwasher 1. After the plastic material has hardened, the foam block 33, as shown in FIG. 19, is divided into blanks 35, which are each later formed into the first insulation element 18. The blanks 35 can be obtained by cutting the foam block 33 into the desired thickness. The foam block 33 can also be made using a continuous process. After the blanks 35 have been produced, they are placed in a forming press 36 (FIG. 20). The forming press 36 comprises a lower part 37 and an upper part 38

Forming press 36 has a cavity 39, which depicts a negative of an outer geometry of the first insulation element 18. Optionally, the second insulation element 21 can also be inserted into the forming press 36. The second insulation element 21 can be treated with an adhesive layer in order to ensure better adhesion to the

Ensure plastic material. By closing the forming press 36 (FIG. 21), the flat blank 35 is shaped into a suitable shape and forms a permanent connection with the second insulation element 21. Forming can be done under

Heat exposure take place. The blank 35 can, however, as previously mentioned, be pressed without the second insulation element 21 in order to obtain a multi-part insulation arrangement 15 as explained above.

After removal from the mold (FIG. 22), the insulation arrangement 15 can then be obtained as a composite part or the first insulation element 18 as an individual part, which has the appropriate shape in order to be attached to the washing compartment 2. The particular advantage here is the low density of the foamed plastic material. A low density can thus be achieved with the first insulation element 18, as a result of which

Thermal insulation properties can be improved. The low density also means that raw materials are used less. Little material results in a reduced absolute heat capacity. A low heat capacity results in additional heat savings since material does not have to be heated. It can be short

Cycle times of the forming press 36 compared to the manufacture of the first one

Insulation element 18 can be achieved as a molded foam part. A wide variety of raw materials can advantageously be processed for the plastic material.

23 shows a schematic block diagram of the previously explained method. In a step S100, the plastic material is foamed to form the foam block 33. In a step S200, the foam block 33 is divided into blanks 35. In a step S300, a blank 35 is transformed into one using the forming press 36

Isolation arrangement 15 is formed. The insulation arrangement 15 can have only the first insulation element 18 or both insulation elements 18, 21. 5 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 containers; Rinsing tank

3 door

4 washroom

5 swivel axis

6 loading opening

7 floor

8 blanket

9 rear wall

10 side wall

1 1 side wall

12 load items

13 Washware intake

14 Washware intake

15 insulation arrangement

16 inside

17 outside

18 first insulation element

19 surface

20 surface

21 second insulation element

22 surface

23 surface

24 separation layer

25 outer cladding

26 surface

27 surface

28 separation layer

29 form

30 molded lower part

31 molded upper part

32 cavity 33 foam block

34 form

35 blank

36 forming press

37 lower part

38 top

39 cavity

A Extension direction (arrow) c18 heat capacity d18 thickness

d21 thickness

E insertion direction (arrow)

51 step

52 step

53 step

S10 step

S20 step

S30 step

S40 step

S100 step

S200 step

S300 step

A18 thermal conductivity p18 density

p21 density

Claims

1. A method for producing an insulation arrangement (15) for a

Functional container (2), in particular washing container, of a household appliance (1), in particular a domestic dishwasher (1), with the steps:

a) foaming (S100) a plastic material into a foam block (33), b) dividing (S200) the foam block (33) into blanks (35), and

c) Forming (S300) each of a blank (35) using a forming press (36) to form the insulation arrangement (15).

2. The method according to claim 1, characterized in that the

Isolation arrangement (15) a first isolation element (18) and a second

Isolation element (21), the second before step c)

Insulation element (21) is inserted into the forming press (36), and in step c) the one blank (35) is formed into the first insulation element (18) and connected to the second insulation element (21).

3. The method according to claim 2, characterized in that the first

Insulation element (18) is connected to the second insulation element (21) with the aid of an adhesive.

4. The method according to claim 1, 2 or 3, characterized in that the

Plastic material is foamed in step a) under ambient pressure.

5. The method according to any one of the preceding claims, characterized in that the plastic material in step a) in an open form (34)

is foamed.

6. Method for producing an insulation arrangement (15) for one

Functional container (2), in particular washing container, of a household appliance (1), in particular a domestic dishwasher, with the steps:

a) inserting (S1) an insulation element (21) into a mold (29), b) introducing (S2) a liquid plastic material into the mold (29) in order to foam a further insulation element (18) onto the insulation element (21) and thus form the insulation arrangement (15), and

c) demolding (S3) of the insulation arrangement (15).

7. The method according to claim 6, characterized in that the insulation element (21) is surface-treated before step a).

8. A method for producing a household appliance (1), in particular one

Household dishwasher, with the steps:

a) providing (S10) a functional container (2), in particular rinsing container, b) providing (S20) a first insulation element (18),

c) providing (S30) a second insulation element (21), and

d) successively attaching (S40) the first insulation element (18) and the second insulation element (21) to the functional container (2), in particular washing container, such that the first insulating element (18) between the functional container (2), in particular washing container, and the second insulation element (21) is arranged.

9. The method according to claim 8, characterized in that the second

Isolation element (21) is connected to an outer cladding (25) before step d).

10. Household appliance (1), in particular household dishwasher, with one

Functional container (2), in particular washing container, and an insulation arrangement (15) for thermal and / or acoustic insulation of the functional container (2), in particular washing container, the insulation arrangement (15) being a first

Isolation element (18) and a second isolation element (21), the first isolation element (18) being arranged between the functional container (2), in particular a washing container, and the second insulating element (21), the isolation arrangement (15) separating the functional container (2 ), in particular washing container, partially covered, and wherein the functional container (2), in particular washing container, is only partially covered by a further second insulation element (21).