EP3092934A1 - Assembly for the acoustic and thermal insulation of a receiving area of a water-bearing domestic appliance, receiving area for a water-bearing domestic appliance, water-bearing domestic appliance using water and method for producing a water-bearing domestic appliance - Google Patents

Abstract

The invention relates to an arrangement (13) for the acoustic and thermal insulation of a receiving area (2) of a water-conducting domestic appliance (1), in particular a washing compartment of a dishwasher, with a first insulating element (14) which is designed to thermally heat the receiving area (2) to isolate, and a second insulating element (16) which is adapted to acoustically isolate the receiving area (2), wherein the first insulating element (14) between the receiving area (2) and the second insulating element (16) is arranged and wherein first insulation element (14) is foamed directly to the receiving area (2).

Description

The present invention relates to an arrangement for the acoustic and thermal insulation of a receiving area of a water-conducting household appliance, a receiving area for a water-conducting household appliance, a water-conducting household appliance and a method for producing a water-conducting household appliance. The water-conducting household appliance is in particular a dishwasher. The receiving area is in particular a washing container of the dishwasher.

For the acoustic insulation of a washing container of a dishwasher, it is known to apply bitumen mats to the washing container. The bitumen mats can be glued to the outside of the washing container, for example with the aid of a hot melt adhesive. Such bitumen mats have a high heat capacity and direct the heat absorbed by the washing away. If the proportion of the surface occupied by the bitumen mats of the washing container is reduced, the energy consumption of the dishwasher can be reduced. However, this reduction of the occupied area has the consequence that the noise emission of the dishwasher increases.

The publication DE 20 2012 103 799 U1 describes a sound-absorbing sandwich panel that can be used todrink a dishwasher. The sandwich panel has a first layer for sound insulation and a second layer for Entdröhnung and / or thermal insulation. The sound-absorbing sandwich panel is produced as a prefabricated component and can be glued, for example, to a washing container of a dishwasher.

Against this background, an object of the present invention is to provide an improved arrangement for the acoustic and thermal insulation of a receiving area of a water-conducting household appliance.

Accordingly, an arrangement for the acoustic and thermal insulation of a receiving area of a water-conducting household appliance, in particular a washing container of a dishwasher, proposed. The assembly includes a first insulating member configured to thermally insulate the receiving area and a second insulating member configured to acoustically isolate the receiving area, wherein the first insulating member is disposed between the receiving area and the second insulating member, and wherein first insulation element is foamed directly to the receiving area.

The fact that the first insulating element is foamed directly to the receiving area, can be dispensed with a subsequent attachment of the arrangement to the receiving area. As a result, a cost reduction in the production of a water-conducting household appliance can be achieved with such an arrangement. Furthermore, as a result, the assembly complexity can be reduced, since an additional step of isolating the receiving area is dispensable.

In particular, the assembly may be attached thereto during manufacture of the receiving area. The receiving area preferably has a wall with two opposite side walls, a ceiling, a floor arranged opposite the ceiling and a rear wall arranged opposite a door of the receiving area. The arrangement may be provided on the entire wall and on the door. The arrangement may comprise the wall or a part of the wall. Alternatively, the arrangement may be provided, for example, only on the side walls, on the rear wall and on the ceiling. Preferably, the receiving area is completely foamed with the first insulating element. In particular, the arrangement is provided on the outside on the receiving area.

According to one embodiment, the first insulation element is configured to transmit vibrations from the receiving region to the second insulation element.

The first insulation element preferably has a specific thermal conductivity of less than 0.1 W / (m * K), more preferably less than 0.05 W / (m * K). Preferably, a specific heat capacity of the first insulating member is as small as possible and smaller than 1400 J / (kg * K). In order to improve the adhesion on a surface of the receiving region, chemical additives may be added to the material of the first insulating element and / or the surface of the receiving region may be pretreated, for example roughened, such that the first insulating element is in particular permanently connected to the receiving region. The first insulation element in particular represents a rigid connection between the receiving region and the second insulation element. That is to say, the first insulation element can transmit vibrations of the reception region, in particular lossless or at least low-loss, to the second insulation element.

According to a further embodiment, the second insulation element has a higher density than the first insulation element.

The first insulation element preferably has a mass density or density between 5 kg / m ³ and 90 kg / m ³ . The mass density or density of the second insulating element is preferably greater than 1000 kg / m ³ .

According to a further embodiment, the first insulation element prevents heat transfer from the receiving region to the second insulation element.

This prevents the second insulating element from extracting heat from the receiving area. As a result, the energy efficiency of the water-conducting household appliance is improved. The second insulation element is preferably configured to convert vibrations into heat.

According to a further embodiment, the first insulation element is made of a foamed plastic material, in particular of a foamed polyurethane material.

Preferably, the first insulating element is made of a closed-cell plastic material. Alternatively, the first insulating element may be made of a polystyrene foam, for example.

According to a further embodiment, the second insulation element is 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.

The bitumen material or the plastic material may comprise finely divided metal powder or rock flour. The second insulating element is preferably plate-shaped or mat-shaped. For example, the second insulation element may also be made of a butyl material. Alternatively, the second insulating element may be a metal plate, in particular a steel plate.

According to a further embodiment, the first insulation element has a thickness of 5 to 50 mm, preferably 10 to 45 mm, more preferably 15 to 40 mm.

Preferably, the thickness of the first insulating element is less than 50 mm. The minimum thickness of the first insulating element is preferably 5 mm. Preferably, a thickness of the second insulating member is smaller than the thickness of the first insulating member. In particular, the thickness of the first insulation element is a multiple of the thickness of the second insulation element. The second insulation element may, for example, have a thickness of 1 to 5 mm.

According to a further embodiment, the second insulating element at a temperature of 20 ° C, a loss factor of greater than 0.08, preferably greater than 0.15, on.

As a result, a good Entdröhnung the receiving area or a damping of the vibrations of the receiving area is achieved.

According to a further embodiment, a cover element, in particular a paper sheet, a metal foil or a metal plate, is arranged on the outside of the second insulation element on the outside.

Preferably, the cover has a very low emission coefficient. Preferably, the emission coefficient of the cover is less than 0.5, preferably less than 0.1. As a result, the energy loss can be further reduced. Preferably, aluminum foil is used as the material for the cover element.

According to a further embodiment, a mass element, in particular a metal plate, is arranged between the first insulation element and the second insulation element.

The metal plate may be covered with the cover. Alternatively, can be dispensed with the cover. Instead of a steel sheet may be used for the mass element, a damping coating with high mass density or density. The density of this material is preferably greater than 1800 kg / m ³ , in particular greater than 2200 kg / m ³ . Optionally, a cover element with a low emission coefficient can also be provided here. By means of this layer structure, effective thermal insulation of the receiving area of the water-conducting domestic appliance is realized over the entire rinsing cycle.

According to a further embodiment, a heat exchanger is arranged in the first insulation element.

Preferably, the heat exchanger is foamed with material of the first insulating element. The heat exchanger may be, for example, a capillary tube heat exchanger, a copper tube heat exchanger, a plate heat exchanger, or the like. Preferably, the heat exchanger is arranged at least on side walls, preferably also on the rear wall and optionally on the ceiling of the receiving area. The rigid connection between the receiving area and the second insulating element is retained. For this purpose, the distance between tubes of the heat exchanger is dimensioned sufficiently large. The distance between outer sides of the tubes is at least the diameter of the individual tubes. To complete emptying of the To allow heat exchanger, the tubes of the same can be mounted vertically or at least obliquely with sufficient slope at the receiving portion.

According to a further embodiment, the heat exchanger is in touching contact with the receiving area.

For example, the heat exchanger may be in linear contact with the receiving area. Alternatively, the tubes of the heat exchanger, for example, have a rectangular geometry, whereby a larger contact surface is achieved with the receiving area. Optionally, to improve the thermal connection of the heat exchanger to the receiving area, a material with good thermal conductivity can be used. For this purpose, for example, find a thermal paste application. This thermal compound adapts well to the contour of the heat exchanger and to the surface of the receiving area. Preferably, the thermal paste has a specific thermal conductivity of 0.5 W / (m ^* K) or greater. The thermal compound is preferably applied only in the region of the heat exchanger to the receiving area.

Furthermore, a receiving area for a water-conducting household appliance, in particular a washing container for a dishwasher, proposed with such an arrangement.

The washing container is preferably made of a steel sheet.

Furthermore, a water-conducting household appliance, in particular a dishwasher, proposed with such a receiving area and / or such an arrangement.

The water-bearing household appliance can also be a washing machine. Alternatively, the arrangement can also be used in other, especially non-water, household appliances.

Furthermore, a method for producing a water-conducting household appliance, in particular a dishwasher, proposed. The method comprises the following steps: providing a receiving area, in particular one Rinse container, the water-bearing household appliance; direct foaming of a first insulating element to the receiving area, wherein the first insulating element is adapted to thermally isolate the receiving area; and arranging a second insulating element on the receiving region, such that the first insulating element is arranged between the receiving region and the second insulating element, wherein the second insulating element is adapted to acoustically isolate the receiving region.

The arrangement of the second insulation element at the receiving area can be carried out before or after the foaming of the first insulation element at the receiving area. For example, the first insulating element between the receiving area and the second insulating element can be foamed.

Further possible implementations of the arrangement, of the receiving area, of the water-conducting domestic appliance and / or of the method also include not explicitly mentioned combinations of features or embodiments described above or below with regard to the exemplary embodiments. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the arrangement, the receiving area, the water-conducting domestic appliance and / or the method.

Further advantageous embodiments and aspects of the arrangement, the receiving area, the water-conducting household appliance and / or the method are the subject of the dependent claims and the embodiments of the arrangement described below, the receiving area, the water-conducting household appliance and / or the method. Furthermore, the arrangement, the receiving area, the water-conducting domestic appliance and / or the method will be explained in more detail by means of preferred embodiments with reference to the attached figures.

Fig. 1

eine schematische perspektivische Ansicht einer Ausführungsform eines Haushaltsgeräts;

Fig. 2

eine schematische Schnittansicht einer Ausführungsform einer Anordnung zur Isolation eines Aufnahmebereichs des wasserführenden Haushaltsgeräts gemäß Fig. 1;

Fig. 3

eine schematische Schnittansicht einer weiteren Ausführungsform einer Anordnung zur Isolation eines Aufnahmebereichs des Haushaltsgeräts gemäß Fig. 1;

Fig. 4

eine schematische Schnittansicht einer weiteren Ausführungsform einer Anordnung zur Isolation eines Aufnahmebereichs des Haushaltsgeräts gemäß Fig. 1;

Fig. 5

eine schematische Schnittansicht einer weiteren Ausführungsform einer Anordnung zur Isolation eines Aufnahmebereichs des Haushaltsgeräts gemäß Fig. 1;

Fig. 6

eine schematische Schnittansicht einer weiteren Ausführungsform einer Anordnung zur Isolation eines Aufnahmebereichs des Haushaltsgeräts gemäß Fig. 1;

Fig. 7

eine schematische Schnittansicht einer weiteren Ausführungsform einer Anordnung zur Isolation eines Aufnahmebereichs des Haushaltsgeräts gemäß Fig. 1; und

Fig. 8

ein schematisches Blockdiagramm einer Ausführungsform eines Verfahrens zum Herstellen des Haushaltsgeräts gemäß Fig. 1.

Show it

Fig. 1

a schematic perspective view of an embodiment of a household appliance;

Fig. 2

a schematic sectional view of an embodiment of an arrangement for the isolation of a receiving area of the water-conducting household appliance according to Fig. 1 ;

Fig. 3

a schematic sectional view of another embodiment of an arrangement for the isolation of a receiving area of the household appliance according to Fig. 1 ;

Fig. 4

a schematic sectional view of another embodiment of an arrangement for the isolation of a receiving area of the household appliance according to Fig. 1 ;

Fig. 5

a schematic sectional view of another embodiment of an arrangement for the isolation of a receiving area of the household appliance according to Fig. 1 ;

Fig. 6

a schematic sectional view of another embodiment of an arrangement for the isolation of a receiving area of the household appliance according to Fig. 1 ;

Fig. 7

a schematic sectional view of another embodiment of an arrangement for the isolation of a receiving area of the household appliance according to Fig. 1 ; and

Fig. 8

a schematic block diagram of an embodiment of a method for manufacturing the household appliance according to Fig. 1 ,

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

The Fig. 1 shows a schematic perspective view of a, in particular water-bearing, household appliance 1. The household appliance 1 may for example be a dishwasher, a washing machine, a refrigerator or the like. In the Fig. 1 a dishwasher is shown. The household appliance 1 has a receiving area 2, which is closed by a door 3, in particular watertight. For this purpose, a sealing device can be provided between the door 3 and the receiving area 2. The receiving area 2, a washing container in the Fig. 1 be shown dishwasher. The receiving area 2 is preferably cuboidal. In particular, the receiving area 2 can be made of a sheet steel. Alternatively, the receiving area 2 can be made of a plastic material at least in sections. The receiving area 2 and the door 3 can form a rinsing chamber 4 for rinsing dishes. The receiving area 2 can be arranged inside a housing of the household appliance 1.

The door 3 is in the Fig. 1 shown in their open position. By pivoting about a provided at a lower end of the door 3 pivot axis 5, the door 3 can be closed or opened. The receiving area 2 has a wall 6 with a bottom 7, a ceiling 7 arranged opposite the floor 7, a door 3 arranged opposite the rear wall 9 and two side walls 10, 11 arranged opposite one another. The bottom 7, the ceiling 8, the rear wall 9 and the side walls 10, 11 may for example be made of a stainless steel sheet. Alternatively, for example, the bottom 7 may be made of a plastic material.

The household appliance 1 furthermore has at least one washware receptacle 12. In particular, a plurality of Spülgutaufnahmen 12 may be provided, each one of the multiple Spülgutaufnahmen 12 is a lower basket, an upper basket or a cutlery drawer of the household appliance 1. The plurality of Spülgutaufnahmen 12 are preferably arranged one above the other in the receiving area 2. Each Spülgutaufnahme 12 is optionally in the receiving area 2 into or out of this displaced. In particular, each Spülgutaufnahme 12 is hineinschiebbar in an insertion direction E in the receiving area 2 and opposite to the insertion direction E in an extension direction A from the receiving area 2 pulled out.

The Fig. 2 1 shows a schematic sectional view of the side wall 11. The household appliance 1 comprises an arrangement 13 for the acoustic and thermal insulation of the receiving area 2 of the domestic appliance 1. The arrangement 13 has a first insulating element 14, which is designed to thermally insulate the receiving area 2. The first insulation element 14 is preferably made of a foamed plastic material, in particular of a foamed polyurethane material. Alternatively, the first insulating element 14 may be made of a foamed polystyrene material, for example. Preferably, the first insulation element 14 has a closed-pore structure. The first insulation element 14 is provided on the outside of the side wall 11. In this case, the outside is to be understood as meaning that the first insulation element 14 points away from the flushing chamber 4. In particular, the first insulation element 14 is arranged on an outer surface 15 of the side wall 11.

The first insulation element 14 has a thickness d ₁₄ of preferably 5 to 50 mm, more preferably 10 to 45 mm, more preferably 15 to 40 mm, further preferably 20 to 35 mm, more preferably 25 to 30 mm. A density ρ _{14 of} the first insulating member 14 is preferably between 5 and 90 kg / m ³ . A specific thermal conductivity λ _{14 of} the first insulating element 14 is preferably less than 0.1 W / (m * K), preferably less than 0.05 W / (m * K). The first insulating element 14 further preferably has a specific heat capacity c ₁₄ of less than 1400 J / (kg * K).

The arrangement 13 may be provided on the entire wall 6 of the receiving area 2. In particular, the arrangement 13 may be provided on the side walls 10, 11, the rear wall 9, the ceiling 8 and the bottom 7. Furthermore, the arrangement 13 may also be provided on the door 3. Alternatively, the arrangement 13 may also be provided only on the side walls 10, 11 and for example on the rear wall 9 and / or the ceiling 8. In the following, reference will be made only to the side wall 11 for the sake of simplicity.

The first insulation element 14 is foamed directly onto the receiving region 2, in particular directly to the wall 6. For this purpose, chemical additives can be added to the material of the first insulation element 14, which prevent the first insulation element 14 from being detached from the wall 6. Furthermore, the outer surface 15 of the side wall 11 can be pretreated alternatively or additionally, for example, roughened, so that the connection between the side wall 11 and the first insulating member 14 does not dissolve. By the full-surface application of the first insulating member 14 on the wall 6 a good thermal insulation of the receiving area 2 is ensured. Another advantage of the complete encapsulation of the receiving area 2 with the first insulating element 14 is that existing gaps are completed gapless, whereby an improved acoustic insulation is ensured.

The arrangement 13 furthermore has a second insulation element 16. The second insulation element 16 is arranged on the first insulation element 14, so that the first insulation element 14 is arranged between the reception region 2 and the second insulation element 16. For example, the first insulating element 14 are foamed to the receiving area 2 and then the second insulating member 16 are attached to the first insulating member 14. Alternatively, the first insulating element 14 between the receiving area 2 and the second insulating member 16 are foamed directly. The first insulation element 14 is preferably connected directly to the second insulation element 16. For this purpose, the material of the first insulating element 14, as explained above, appropriate chemical additives are added, which ensure a reliable and permanent connection with the second insulating member 16. Alternatively or additionally, a surface 17 of the second insulation element 16, which faces in the direction of the receiving area 2, surface-treated, for example, be roughened to ensure a secure and permanent connection of the first insulating member 14 with the second insulating member 16.

A thickness d _{16 of} the second insulating element 16 is preferably smaller than the thickness d _{14 of} the first insulating element 14. For example, the thickness d _{16 may be} 1 to 10 mm, preferably 1 to 8 mm, more preferably 1 to 5 mm, further preferably 1 to 3 mm, amount. The first insulating element 14 effects a rigid connection of the second insulating element 16 to the receiving region 2. In particular, the first insulating element 14 is configured to transmit vibrations from the receiving region 2 to the second insulating element 16. The first insulation element 14 is preferably not adapted to dampen vibrations. In particular, the first insulating element 14 prevents heat transfer from the receiving area 2 to the second insulating element 16. As a result, the second insulating element 16 can not extract heat from the receiving area 2. As a result, the energy efficiency of the household appliance 1 is improved. In the second insulating element 16, vibrations of the receiving region 2 are converted into heat.

The second insulation element 16 preferably has a significantly higher density than the first insulation element 14. The second insulation element 16 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 insulating element 16 may be made of a butyl material. The second insulation element 16 is in particular plate or mat shape. The second insulating element 16 may also be a metal sheet, in particular a steel sheet.

The second insulating element 16 serves to Entdröhnung the receiving area 2 and the damping of vibrations of the receiving area 2. The second insulating element 16 preferably has the highest possible loss factor. In the case of physical vibrations of different nature, a loss factor in the present case is to be understood as meaning the ratio of the lossy real part to the lossless imaginary part of a complex variable. The loss factor of the material of the second insulating element 16 is preferably greater than 0.08, more preferably greater than 0.15, at 20 ° C. A density ρ _{16 of} the second insulating member 16 is preferably greater than 1000 kg / m ³ .

The arrangement 13 further comprises in the Fig. 2 Shown cover 18, which is disposed on the outside of the second insulating member 16. Preferably, the cover 16 is provided on one of the surface 17 of the second insulating member 16 opposite arranged surface 19 of the second insulating member 16. The cover member 18 may be a paper sheet, a metal foil such as an aluminum foil or a thin metal plate. The material of the cover member 18 preferably has a low emission coefficient or emissivity. The emissivity of a body indicates how much radiation it emits in comparison to an ideal heat radiator, a black body. The cover element 18 preferably has an emission coefficient of less than 0.5, in particular less than 0.1. As a result, the energy loss can be further reduced. Preferably comes as a material for the cover 18 aluminum foil used.

The Fig. 3 shows a further embodiment of an arrangement 13 for insulating the receiving area 2 of the household appliance 1. The embodiment of the arrangement 13 according to the Fig. 3 differs from the embodiment of the arrangement 13 according to the Fig. 2 in that the cover element 18 is not designed as an aluminum foil but as a metal sheet, in particular as a sheet steel. Instead of the steel sheet, a high density damping lining can also be used. The density of the material of the damping lining is preferably greater than 1800 kg / m ³ , in particular greater than 2200 kg / m ³ . Furthermore, the steel sheet can be additionally covered with an aluminum foil.

The Fig. 4 shows a further embodiment of an arrangement 13 for the isolation of the receiving area 2 of the household appliance 1. The arrangement 13 according to the Fig. 4 differs from the arrangement 13 according to the Fig. 2 in that a mass element 20 is arranged between the first insulation element 14 and the second insulation element 16. The mass element 20 is preferably a metal plate, in particular a steel plate. Due to the rigid connection of the receiving region 2 with the mass element 20 with the aid of the first insulating element 14, the mass of the mass element 20 becomes acoustically effective on the outside of the receiving region 2. By the covering of the mass element 20 with the second insulating element 16, the acoustic efficiency can be further improved.

The Fig. 5 shows a further embodiment of an arrangement 13 for insulating the receiving area 2 of the household appliance 1. The embodiment of the arrangement 13 according to the Fig. 5 is a development of the embodiment of the arrangement 13 according to the Fig. 2 , The arrangement 13 according to the Fig. 5 has a heat exchanger 21 provided in the first insulating element 14. Preferably, the heat exchanger 21 or tubes 22 to 25 of the heat exchanger 21 are in touching contact with the side wall 11. In particular, the tubes 22 to 25 may be in linear contact with the side wall 11.

Furthermore, the tubes 22 to 25 may be thermally coupled to the sidewall 11 by means of a thermal grease 26. With the aid of the heat exchanger 21, a wall temperature of the receiving area 2 is controllable. As a result, a good and reproducible drying result can be achieved. The heat exchanger 21 may be formed, for example, as a capillary tube heat exchanger, copper tube heat exchanger, plate heat exchanger or the like. Preferably, the heat exchanger 21 is provided on at least one side wall 10, 11, preferably on both side walls 10, 11, on the rear wall 9 and optionally on the ceiling 8 of the receiving area 2. To improve the natural convection, the heat exchanger 21 is preferably provided on vertical surfaces of the receiving area 2. The rigid connection between the receiving area 2 and the second insulating element 16 with the aid of first insulation element 14 is maintained. For this purpose, a distance a ₂₁ between two tubes 22 to 25 of the heat exchanger 21 is selected so that a sufficient contact of the first insulating member 14 is ensured with the receiving area 2. The distance a ₂₁ preferably corresponds to at least one diameter d _{21 of} the individual tubes 22 to 25. In the case of a tube diameter d ₂₁ of less than 10 mm or less than 5 mm, this corresponds to a distance a ₂₁ of at least 10 mm or at least 5 mm.

The thermal compound 26 adapts well to the contour of the heat exchanger 21 and to the surface of the receiving area 2. As a result, a good heat transfer is guaranteed. Preferably, the thermal grease 26 has a specific thermal conductivity λ ₂₆ of 0.5 W / (m * K) or more. The thermal compound 26 is applied to the receiving area 2 only in the region of the heat exchanger 21. Alternatively or additionally, the geometry of the heat exchanger 21 can be structurally adapted to the surface of the side wall 11. For example, the tubes 22 to 25 may be rectangular or semicircular. In order to allow a complete emptying of the heat exchanger 21, the tubes 22 to 25 can be mounted vertically or at least obliquely with sufficient slope.

The Fig. 6 shows a further embodiment of an arrangement 13. The arrangement 13 according to the Fig. 6 is a development of the arrangement 13 according to the Fig. 3 , The arrangement 13 according to the Fig. 6 differs from the arrangement 13 according to the Fig. 3 only by an additional heat exchanger 21st

The Fig. 7 shows a further embodiment of an arrangement 13. The arrangement 13 according to the Fig. 7 is a development of the arrangement 13 according to the Fig. 4 , The arrangement 13 according to the Fig. 7 differs from the arrangement 13 according to the Fig. 4 only by an additional heat exchanger 21st

The Fig. 8 schematically shows a method for producing the water-conducting household appliance 1. The method comprises a step S1 of providing the receiving area 2 of the household appliance 1. The receiving area 2 is for example a washing container of a dishwasher. Before the step S1, the receiving area 2 can be made, for example, from a steel sheet. In one Step S2, the first insulating element 14 is foamed directly to the receiving area 2, wherein the first insulating element 14 is adapted to thermally isolate the receiving area 2. In a step S3, the second insulating element 16 is arranged on the receiving area 2, so that the first insulating element 14 is arranged between the receiving area 2 and the second insulating element 16, wherein the second insulating element 16 is adapted to acoustically isolate the receiving area 2.

The second insulation element 16 can be placed on the first insulation element 14, for example, as a mat or plate. Alternatively, the first insulating element 14 can be foamed between the receiving area 2 and the second insulating element 16, so that the first insulating element 14 is connected directly to the receiving area 2 and the second insulating element 16. The arrangement of the second insulation element 16 on the receiving region 2 can be carried out before or after the foaming of the first insulation element 14.

The thermal insulation of the receiving area 2 by means of the first insulating element 14 prevents heat transfer into the acoustically active materials, that is to say into the second insulating element 16 and into the optional ground element 20, over the entire rinsing cycle. The second insulating element 16 and the grounding element 20 can thus open the temperature level of the environment are kept. As a result, little or no energy needs to be expended to heat them up. The use of an efficient heat exchanger 21 further ensures a good and reproducible drying result.

Although the present invention has been described with reference to embodiments, it is variously modifiable.

Used reference signs

1

household appliance

2

reception area

3

door

4

rinsing chamber

5

swivel axis

6

wall

7

ground

8th

blanket

9

rear wall

10

Side wall

11

Side wall

12

Spülgutaufnahme

13

arrangement

14

insulation element

15

outer surface

16

insulation element

17

surface

18

cover

19

surface

20

mass element

21

heat exchangers

22

pipe

23

pipe

24

pipe

25

pipe

26

Thermal Compounds

A

extraction direction

a ₂₁

distance

c ₁₄

heat capacity

d ₁₄

thickness

₁₆ d

thickness

d ₂₁

diameter

e

insertion direction

S1

step

S2

step

S3

step

λ ₁₄

thermal conductivity

λ ₂₆

thermal conductivity

ρ ₁₄

density

ρ ₁₆

density

Claims (15)

Arrangement (13) for the acoustic and thermal insulation of a receiving area (2) of a water-conducting household appliance (1), in particular a washing container of a dishwasher, with a first insulating element (14) which is adapted to thermally isolate the receiving area (2), and a second insulation element (16) which is adapted to acoustically isolate the receiving region (2), wherein the first insulation element (14) is arranged between the receiving region (2) and the second insulation element (16) and wherein the first insulation element (14 ) is foamed directly to the receiving area (2). Arrangement according to claim 1, characterized in that the first insulation element (14) is adapted to transmit vibrations from the receiving area (2) to the second insulating element (16). Arrangement according to claim 1 or 2, characterized in that the second insulation element (16) has a higher density (ρ ₁₆ ) than the first insulation element (14). Arrangement according to one of claims 1 to 3, characterized in that the first insulating element (14) prevents heat transfer from the receiving area (2) to the second insulating element (16). Arrangement according to one of claims 1 to 4, characterized in that the first insulating element (14) is made of a foamed plastic material, in particular of a foamed polyurethane material. Arrangement according to one of claims 1 to 5, characterized in that the second insulation element (16) 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, is made. Arrangement according to one of claims 1 to 6, characterized in that the first insulating element (14) has a thickness of 5 to 50 mm, preferably from 10 to 45 mm, more preferably from 15 to 40 mm. Arrangement according to one of claims 1 to 7, characterized in that the second insulating element (16) at a temperature of 20 ° C has a loss factor of greater than 0.08, preferably greater than 0.15. Arrangement according to one of Claims 1 to 8, characterized in that a cover element (18), in particular a paper sheet, a metal foil or a metal plate, is arranged on the outside of the second insulation element (16). Arrangement according to one of claims 1 to 9, characterized in that a mass element (20), in particular a metal plate, is arranged between the first insulation element (14) and the second insulation element (16). Arrangement according to one of claims 1 to 10, characterized in that in the first insulating element (14) a heat exchanger (21) is arranged. Arrangement according to claim 11, characterized in that the heat exchanger (21) is in touching contact with the receiving area (2). Housing area (2) for a water-conducting household appliance (1), in particular washing container for a dishwasher, with an arrangement (13) according to one of claims 1 to 12. Water-conducting household appliance (1), in particular a dishwasher, having a receiving area (2) according to claim 13 and / or an arrangement (13) according to one of claims 1 to 12. Method for producing a water-conducting domestic appliance (1), in particular a dishwasher, with the steps: - Providing (S1) a receiving area (2), in particular a washing container, the water-conducting household appliance (1); - direct foaming (S2) of a first insulating element (14) to the receiving area (2), wherein the first insulating element (14) is adapted to thermally isolate the receiving area (2); and - Arranging (S3) of a second insulating element (16) on the receiving area (2), so that the first insulating element (14) between the receiving area (2) and the second insulating element (16) is arranged, wherein the second insulating element (16) thereto is set up to isolate the receiving area (2) acoustically.

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