EP1835838A1 - Lave-vaisselle et procede de realisation - Google Patents

Lave-vaisselle et procede de realisation

Info

Publication number
EP1835838A1
EP1835838A1 EP05797123A EP05797123A EP1835838A1 EP 1835838 A1 EP1835838 A1 EP 1835838A1 EP 05797123 A EP05797123 A EP 05797123A EP 05797123 A EP05797123 A EP 05797123A EP 1835838 A1 EP1835838 A1 EP 1835838A1
Authority
EP
European Patent Office
Prior art keywords
dishwasher
structural elements
tub
rinsing
washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05797123A
Other languages
German (de)
English (en)
Inventor
Michael Rosenbauer
Bernd Schessl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1835838A1 publication Critical patent/EP1835838A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4246—Details of the tub
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4209—Insulation arrangements, e.g. for sound damping or heat insulation

Definitions

  • the present invention relates to a dishwasher with a rinsing container, which has a rinsing pan and a housing jacket connected thereto.
  • the invention further relates to a method for producing a dishwasher according to the invention.
  • Dishwashers typically include within an outer frame or housing a number of resources that produce undesirable noise during operation of the device.
  • engines in dishwashers e.g. for operating a pump, generate noises that have relatively low frequency components in the range of about 200 to 300 Hz. These have a particularly disturbing effect on the environment of the household appliance. Frequencies in the said range are difficult to remove by means of conventional sound-absorbing or absorbing systems.
  • noises are also generated by the water exiting with pressure from the spray arms, which impinges partly on the items to be washed arranged in the dishwasher and partly on the walls of the washing container. Since the cleaning effect of a dishwashing machine is all the better, the more pressure water can be applied to the items to be washed, the operating noise generated by a dishwasher increases at the same time.
  • a washer-dryer or a drum washing machine in which for the purpose of minimizing the generation of noise, the jacket of the tub is provided with embossing or the like. This is intended to reduce the noise during the washing and spinning process and thus reduce the sound radiation from the machine housing.
  • the noise is already combated at the source.
  • the machine design is not easily transferred to dishwashers. In washing machines namely, the vibrations emanating from the tub are transferred to the machine housing when the laundry drum is circulated. There, they are amplified by resonance effects, so that the noise radiated from the machine housing to the environment can have a disturbing effect.
  • the noise in a dishwasher is not caused by the circulation of a relatively heavy component relative to the housing, but by impinging on the Spül umanerlusive water jets, which normally play no role in a washing machine.
  • DE 82 26 335 U1 proposes to provide sidewalls for the purpose of stiffening with stampings.
  • the stampings are intended to be designed as crowns, which, based on the interior of the housing, are directed outwards, wherein a plurality of crowns are arranged uniformly distributed over the entire surface of each side wall.
  • the purpose of this procedure is to reduce the flat surfaces of the sidewalls and at the same time increase the rigidity of the device housing.
  • a high rigidity of the side walls whereby the wall thickness can be reduced accordingly.
  • the proposed soundproofing measures acts during very short periods of an entire operation.
  • the circulation of the rinsing liquid and the application to the dishes with the pronounced negative effects occupy a significantly larger proportion of the total rinse program, the proposed measure for noise reduction can contribute only slightly.
  • a dishwasher with a rinsing container which has soundproofing against the spray jets of the sprayer formed inner walls is known from DE 23 47 252 A1.
  • the inner walls are formed wavy or provided with concave and / or convex embossed calotte.
  • the rinsing container with respect to the spray jets of the spray devices noise-insulating inner walls, which as partitions are arranged upstream of the washing compartment inner walls via elastic sealing rings and thereby prevent the spraying jets of the spraying devices from being subjected to the rinsing tank without being damped and from strong noise generation.
  • DE 43 42 102 A1 proposes to provide this with a stabilizing embossing in order to increase its stability.
  • the cover can be made of structure-borne sound insulating sandwich panel. In practice, however, it has been found that only a small part of the noise development can be influenced by the design of the housing cover, so that the proposed approach can not purposefully contribute to significant noise insulation.
  • DE 103 47 244 A1 proposes to reduce the noise emission of a dishwasher to surround it with a sound insulation, in which simultaneously cooling air ducts are introduced.
  • the sound insulation is arranged between the washing container and an outer wall.
  • DE 20 16 637 discloses a dishwasher with a self-supporting, noise-damped washing container.
  • a board made of cardboard between the washing and an outer wall is inserted and firmly connected to the latter. Due to the stiffening of the housing results in a structure-borne noise.
  • Lye container attached to the rear wall and essential operating parts, in particular the drive parts, are arranged on the back.
  • a silencer backdrop for ventilation technology in which a profiled metal plate is placed in front of a filling of a sound-absorbing material.
  • DE 43 11 978 C1 describes a composite of superimposed buckled profiled material webs with embedded secondary materials. This results in a sound-absorbing, -reflecting and strength-increasing property.
  • vault structured sheets and films are disclosed as semi-finished products for sound engineering (DE 44 37 986 A1).
  • the object of the present invention is therefore to further reduce the noise in a dishwasher.
  • the invention is based on the finding that a significant proportion of the noise development is caused by the impact of the rinsing liquid on the rinse tub, the used to collect the circulating rinsing liquid.
  • the rinsing liquid circulated during operation in a domestic appliance drips directly or indirectly onto the rinsing tank after being applied to the items to be rinsed due to the gravitational effect, thereby causing disturbing sound waves propagating through the housing of the household appliance.
  • the invention therefore proposes a dishwashing machine with a rinsing container which has a rinsing trough and a housing jacket connected thereto.
  • the washing tub has an inner tub and a carrier, in particular plastic carrier, and the carrier is designed such that it effects a reduction in noise when washing liquid impinges on the washing tub.
  • the carrier may be made of any material, for. As metal or plastic, and is usually located below the inner tub.
  • the strength of the washing tub is increased.
  • the reduction of the sonic evolution is based on increasing the strength of a component, in this case the purge sump, to reduce the emission of noise.
  • the washing container is designed at least in two parts, of which the washing tub forms a first part and the housing jacket forms a second part.
  • the manufacture is simplified because the tub can be made of it independently of the shell or parts of the housing shell thereof.
  • the washing tub has a dimensionally stable inner tub, e.g. from a stainless steel, on, in which structural elements are introduced for additional noise reduction.
  • the washing tub may further comprise a dimensionally stable plastic carrier, which may optionally be formed with or without structural elements, wherein the plastic carrier is firmly connected to the inner tub.
  • the frictional connection between the inner trough and the plastic part can be produced by adhesive bonding, by a clamping or crimping connection, by riveting or thermic riveting or any other suitable connection method.
  • the inner tub and plastic carrier can be prefabricated as a semi-finished product in a "sandwich” construction and then connected to the then prefabricated casing shell to form a washing container Stability of the wash tub and prevents excessive propagation of sound waves and their LJ- transmission to the housing shell and finally the outer housing of the device.
  • the structural elements in the dimensionally stable inner tub for further reductions in noise can generally be of any desired nature.
  • all known and described from the prior art possibilities can be used.
  • it is advantageous if the structural elements are designed as honeycomb or polygonal patterned stiffening pattern.
  • the structural elements may optionally be designed as directed inwards or towards the outside, in each case based on the washing compartment of a finished household appliance.
  • the (optional) structural elements can be formed by a multiplicity of webs, which each enclose a polygon in plan view.
  • the polygon may e.g. be designed as a triangle, square or rectangle.
  • the provision of the webs enables a high degree of stability of the plastic carrier made of plastic.
  • trapped air spaces can be formed by the webs of each polygon and an inner wall section. Due to the bad sound Transmission of the air, compared to a solid material, a reliable sound transmission and thus noise reduction is effected.
  • the rinsing trough has structural elements at least partially. Due to the formation of structural elements in the wash tub, the noise can be reduced by increasing the rigidity.
  • the structural elements are arranged on the inside of the washing tub. This results in a visually better impression for the user of the dishwasher because the bottom of the washing container has visible structural elements and the noise is additionally reduced.
  • the structural elements are caused by a different thickness of the washing tub, for example an inner tub, z. B. by a surface of the washing tub on the inside with partial surfaces with different inclination or height.
  • the structural elements in the washing tub can also be conditioned by an embossing (forming) at the same, constant thickness of the washing tub.
  • the structural elements are formed as a honeycomb or vieckförmig structured stiffening pattern.
  • the structural elements are similar and / or regular, formed approximately circular section in cross-section.
  • a method according to the invention for producing a dishwasher has the steps:
  • a metallic material whose dimensions are selected for producing only the dishwasher washing tub; and forming the material to form an inner tub of the washing tub, whereby, preferably with the step of forming, structural elements are introduced at least into the bottom area of the inner tub which, due to a uniformly and / or regularly formed buckling structure, produces a
  • a plastic carrier having a base support is provided, which is adapted to the shape of the formed inner tub and the inner tub is firmly connected to a semifinished product after the step of forming with the plastic carrier.
  • the type of production of the frictional connection can be done on the most suitable for the expert appearing possibility.
  • Adhesive connections, clamping connections, riveted joints, and the production of thermocontaining connections in which the plastic support is provided with pin-shaped projections which are first introduced into recesses of the formed inner tub and then deformed by heat into spherical heads, are particularly suitable for this purpose. Furthermore, it is also possible that the plastic carrier rests with bias on the inner trough, thereby creating the necessary connection for the transmission of forces.
  • the step of forming and introducing the structural elements into the metallic semi-finished product is carried out using a pressing tool with a correspondingly shaped die.
  • the plastic carrier is produced using an injection molding process, wherein structural elements can be formed on the base carrier by the injection molding tool used.
  • the arrangement and shape of the structural elements, which are attached to the base support or integrated in this, can be particularly easily realized in this way.
  • the invention can be seen in that a reduction of the noise of a dishwasher can be effected by increasing the rigidity of the washing tub.
  • the washing of the household appliance is preferably carried out in two parts, wherein the washing tub is formed separately from a housing shell.
  • the washing tub is formed separately from a housing shell.
  • 1 is an exploded view of components of the washing container of a dishwasher according to the invention
  • 2 shows a section of a first embodiment of an inventively designed rinse
  • Fig. 3 shows a portion of a second embodiment of an inventively designed rinse tub.
  • FIG. 1 shows in an exploded view a rinsing container 2 a dishwasher 1.
  • the rinsing container 2 essentially comprises a housing jacket 4 and a rinsing pan 3.
  • the other components of a dishwashing machine such as e.g. the outer housing, motors, pumps, lines of Speller Wegsniklaufs etc. are not shown for the sake of simplicity.
  • the housing shell 4 may be formed in two parts, for example. While the side walls 16 and the housing roof 17 are integrally formed and brought into their shape shown in the figure by corresponding bending along the housing edges 19, the back wall 18 may be e.g. be connected by a welded joint with said components to a housing shell 4.
  • the side walls of the housing shell may be provided with embossments, depressions, elevations, or generally bulges and bumps to disperse water jets impinging on the side walls and reduce their noise effect.
  • the outer sides i. the sides facing away from the interior of the container, the housing jacket 4 insulating materials, e.g. made of bitumen, be applied.
  • FIG. 1 shows an embodiment of a rinsing tank 3 according to the invention, which is formed in two parts from a dimensionally stable inner trough 6 and a plastic carrier 7. While the inner tub 6 is made of a metallic material, preferably a stainless steel, the plastic carrier 7 consists of an injection-moldable plastic material.
  • the structural elements 5 in the dimensionally stable inner tub 6 are preferably arranged in a bottom area 14 and are formed in the form of bulges and depressions 10.
  • the exaggerated in Fig. 1 high wall portions 15 of the dimensionally stable inner tub 6 serve primarily for connecting the same with the housing shell 4.
  • the entire washing container 2 rests on a base part, in particular made of plastic (not shown).
  • the formation of the plastic carrier in combination with this base part is arbitrary.
  • the plastic carrier 7 may for example be a part of this base part or constitute a separate component which is connected to the base part.
  • the design of the stiffness-increasing structural elements 5 is in principle of any nature, with honeycomb, polygonal or circular structured stiffening patterns proving advantageous from a manufacturing point of view.
  • the recesses 10, which may be arranged to the interior of the washing compartment or to the outside, based on the washing compartment, are each separated from each other by edge portions 11. These divide during a cleaning program from arranged in the interior of the washing ware dripping rinse liquid and deflect this in different directions, resulting in a reduction of noise.
  • the plastic carrier 7 is also provided with structural elements 8 in the form of intersecting webs 8.
  • structural elements 8 in the form of intersecting webs 8.
  • FIGS. 2 and 3 show two different embodiments of flushing tubs 3 according to the invention. While in Fig. 2, the washing tub is provided in the manner described above with structural elements 5, 8, the inner tub 6 of the embodiment of Fig. 3 has a smooth surface. By connecting a provided with a smooth surface dimensionally stable inner tub 6 with a provided with structural elements 8 plastic carrier 7 results in a sufficient increase in stiffness, so that in this way a reduction of the noise is effected.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

La présente invention concerne un lave-vaisselle qui présente un réservoir de lavage (2) comprenant une cuve de lavage (3) et une enveloppe de boîtier (4) reliée à la cuve. Selon l'invention, la cuve de lavage (3) est dotée d'une cuve interne (3) et d'un support en matière plastique (7) permettant de réduire les bruits liés à l'impact du liquide de lavage sur la cuve de lavage (3).
EP05797123A 2004-12-17 2005-10-20 Lave-vaisselle et procede de realisation Withdrawn EP1835838A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004060946A DE102004060946A1 (de) 2004-12-17 2004-12-17 Geschirrspülmaschine und Verfahren zum Herstellen derselben
PCT/EP2005/055407 WO2006063890A1 (fr) 2004-12-17 2005-10-20 Lave-vaisselle et procede de realisation

Publications (1)

Publication Number Publication Date
EP1835838A1 true EP1835838A1 (fr) 2007-09-26

Family

ID=35447858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05797123A Withdrawn EP1835838A1 (fr) 2004-12-17 2005-10-20 Lave-vaisselle et procede de realisation

Country Status (5)

Country Link
US (1) US20080223421A1 (fr)
EP (1) EP1835838A1 (fr)
CN (1) CN200987656Y (fr)
DE (1) DE102004060946A1 (fr)
WO (1) WO2006063890A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007030074A1 (de) * 2007-06-29 2009-01-02 BSH Bosch und Siemens Hausgeräte GmbH Innenbehälter für eine Geschirrspülmaschine
DE102007030064A1 (de) * 2007-06-29 2009-01-02 BSH Bosch und Siemens Hausgeräte GmbH Plattform für eine Geschirrspülmaschine
DE102007031478A1 (de) * 2007-07-06 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Systembaukasten für Geschirrspüler-Innenbehälter
US8015848B2 (en) * 2009-01-22 2011-09-13 Electrolux Home Products, Inc. Acoustic panel
US20110232701A1 (en) * 2009-01-27 2011-09-29 Electrolux Home Products, Inc. Mastic-less dishwasher providing increasing energy efficiency and including a recyclable and reclaimable tub
US8020662B1 (en) * 2010-07-22 2011-09-20 Electrolux Home Products, Inc. Acoustic base tray for a dishwashing appliance, and associated method
US9155443B2 (en) 2011-09-21 2015-10-13 Whirlpool Corporation Dishwasher with multi-piece tub
DE202017103815U1 (de) * 2017-06-27 2017-08-24 Polytec Plastics Germany Gmbh & Co. Kg Waschmaschine, Wäschetrockner oder Geschirrspülmaschine
DE102018217472A1 (de) * 2018-10-12 2020-04-16 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine
US11849898B2 (en) * 2021-08-26 2023-12-26 Whirlpool Corporation Dishwasher with door assembly

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Also Published As

Publication number Publication date
WO2006063890A1 (fr) 2006-06-22
US20080223421A1 (en) 2008-09-18
CN200987656Y (zh) 2007-12-12
DE102004060946A1 (de) 2006-07-06

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