EP2486841A2 - Lave-vaisselle et procédé de fabrication d'une cuve de lavage d'un lave-vaisselle - Google Patents

Lave-vaisselle et procédé de fabrication d'une cuve de lavage d'un lave-vaisselle Download PDF

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Publication number
EP2486841A2
EP2486841A2 EP12152689A EP12152689A EP2486841A2 EP 2486841 A2 EP2486841 A2 EP 2486841A2 EP 12152689 A EP12152689 A EP 12152689A EP 12152689 A EP12152689 A EP 12152689A EP 2486841 A2 EP2486841 A2 EP 2486841A2
Authority
EP
European Patent Office
Prior art keywords
capillary gap
gap
liquid
capillary
dishwasher
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Withdrawn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
EP12152689A
Other languages
German (de)
English (en)
Other versions
EP2486841A3 (fr
Inventor
Hans Gebauer
Peter Karl
Christian Noje
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 EP2486841A2 publication Critical patent/EP2486841A2/fr
Publication of EP2486841A3 publication Critical patent/EP2486841A3/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a dishwasher, in particular a domestic dishwasher, and a method for producing a washing compartment of a dishwasher, wherein two sheet metal parts are joined together, in particular welded, to form a capillary gap open to the washing compartment, and the capillary gap is sealed liquid-tight by a sealing means.
  • the washing container of a dishwasher can be produced from sheet metal parts, of which a sheet metal part is formed as a jacket plate to a box-shaped, so-called container frame or a container shell. Its rear side is e.g. closed with a serving as a rear wall sheet metal part.
  • the sheet metal parts are at least partially made of a CrNi steel, but of a cheaper Cr-steel, but which is prone to crevice corrosion.
  • a dishwashing machine in which a container frame and a rear wall each have bending edges bent outward flanges. These are connected together to form a capillary gap open to the washing compartment.
  • the capillary gap or the joint is liquid-tight closed flushing chamber side by a sealant.
  • the sealant is formed with a large amount of material used as a sealing bead, which covers the capillary gap on the top.
  • the sealing bead protrudes from the two, the gap edges forming bending edges into the washroom.
  • the sealing bead thus has a large reaction surface, which is in direct contact with the chemically aggressive rinsing liquor.
  • the sealing bead is subjected to mechanical loads by the rinsing fluid circulated in the rinsing operation. Correspondingly large is the risk that the sealing properties of the sealing bead will reduce over time.
  • the object of the invention is to provide a dishwasher and a method for producing a washing container of a dishwasher, which ensure permanent protection of the sheet metal parts of the washing container from corrosion.
  • the sealing agent is a liquid paint, which on the basis of capillary forces wets the capillary rinsing container on the inside and has cured within the capillary gap.
  • the optionally prone to crevice corrosion capillary is thus sealed inside the dishwasher.
  • the arrangement within the capillary gap of the liquid paint is also protected against mechanical stress during the flushing operation.
  • the reaction surface of the liquid paint which can come into contact with the rinsing liquor, compared to the prior art is substantially reduced, whereby the chemical load of the liquid paint is reduced.
  • the liquid paint is advantageously visually protected within the capillary gap.
  • a free joint space between the liquid paint surface and the, the washing compartment facing gap edge can form.
  • the gap or joint space is sealant-free and therefore open to the washing compartment.
  • This sealant-free joint space forms a so-called shadow gap, in which the liquid paint is no longer visible due to shading effects from the outside.
  • a capillary gap in the context of the invention is to be understood a gap between the sheet metal parts with very small gap width. Due to the surface effects, which are very prominent in comparison to larger gap widths, the capillarity increasingly occurs in the capillary gap, in which the liquid lacquer, because of its surface tension, becomes caulked in the capillary gap and can no longer flow out until the curing has been completed.
  • the bending edges each form the transition of the sheet metal parts to the outwardly angled connecting flanges.
  • the two bending edges each form gap or gap edges of the capillary gap which is open toward the flushing space.
  • the sealant may preferably not only opposite one the bending edges, but against both bending edges set back within the Kapillarspalts or the connecting joint to be arranged.
  • the outwardly angled sheet metal part flanges each form joint flanks which laterally delimit the capillary gap.
  • the joint edges may converge in particular wedge-shaped up to a gap bottom.
  • the liquid paint can fill the capillary gap starting from the gap bottom to a predetermined filling level, which is offset by the above-mentioned free distance from the at least one bending edge.
  • the inside of the washing container is largely free of steps.
  • the sheet metal parts forming the washing container can therefore preferably be aligned flush with one another at their bending edges as well as with the interposition of the capillary gap. Since the liquid paint is located within the capillary gap, a smooth transition between the two sheet metal parts is not interrupted by the liquid paint.
  • the invention is particularly suitable for the use of sheet metal parts, which are not formed of corrosion-resistant CrNi steel, but of a Cr-steel, which is prone to crevice corrosion, which can be permanently avoided with the joint according to the invention.
  • the liquid paint is technically complicated to bring in directly between the joint flanks of the capillary gap, so that it is set back from the gap edges. Against this background, it has proven to be advantageous if the liquid paint is applied in an initially liquid form to the capillary gap.
  • the liquid paint may be, in particular, a silicone resin which may initially be introduced in liquid form into the capillary gap.
  • the silicone resin may preferably have such a measured surface tension that it adheres in liquid form due to capillary action within the capillary gap and can not flow out. Subsequently, a curing step can take place in which the still liquid silicone resin is cured within the capillary gap.
  • the entry of the liquid paint in the joint can be a cleaning of the sheet metal part assembly means Plasma or possibly an activation of the surface be preceded by means of laser.
  • the introduction of the liquid paint into the capillary gap can preferably be carried out after the assembly of the sheet metal parts has already taken place.
  • an application device with a picking nozzle can be provided, with which the sealant is introduced as a fine bead into the capillary gap.
  • the picking nozzle may be guided on a robotic arm along the capillary gap, wherein an optical system can monitor and control the fine adjustment of the picking nozzle so that the liquid paint applied as a fine bead does not tear or have larger pores.
  • the optical monitoring and activation system is preferably installed together with the application system on a common robot arm.
  • the application nozzle has a small diameter in the range of 0.8mm to 1.5mm.
  • Correspondingly low is also the material input into the capillary gap, which is only a fraction of the material input, which has to be done in the above-mentioned prior art when applying the sealing bead.
  • a section of a washing container of a dishwasher designed in the present embodiment as a household dishwasher is shown.
  • the washing container is made of sheet metal parts, of which a first sheet metal part in the present embodiment is designed as a box-shaped container frame 1. This is made of a planar jacket plate in a bending process shaped so that it covers the bottom, top and side walls of the washing.
  • a second sheet metal part 3 the washing container in the present embodiment, a container rear wall 3, which closes the back of the sheet metal frame 1.
  • FIG. 1 a connection point between the bottom wall 5 of the container frame 1 and the rear wall 3 is shown. Accordingly, the approximately trough-shaped rear wall 3 at its raised outer edge on a bent edge 7 outwardly angled connecting flange 9. Accordingly, the bottom wall 5 of the container frame 1 on the back has a corresponding connecting flange 11, which is also angled outwardly about a bending edge 13.
  • an end 15 of the connecting flange 9 is folded around an outer edge of the connecting flange 11 around.
  • the folded seam thus formed runs around the entire container frame 1 around and forms a connection region between the container rear wall 3 and the container frame 1.
  • the two flanges 9, 11 are also connected by way of example via seam welding or equivalent connection technology.
  • the free joint space 21 acts as a so-called shadow gap, in which due to shading, the sealant 19 is optically advantageous no longer visible from the outside. At the same time, the sealant 19 is also largely protected against chemical and mechanical stress by the rinsing liquor.
  • the cross-sectional geometry of the joint or the capillary 17 can be seen.
  • the flanges 9, 11 running vertically downwards from the bending edges 7, 13 form joint flanks which delimit the capillary gap 17 laterally.
  • the lateral joint edges run according to the Fig. 2 wedge-shaped up to one in the Fig. 2 only line-shaped gap bottom 23 together.
  • the sealing means 19 fills the capillary gap 17 up to a filling level h, which is offset in height by the free distances x 1 , x 2 from the bending edges or gap edges 7, 13.
  • the two bending edges 7, 13 are aligned in terms of height to each other so that there is a flush transition between the bottom wall 5 and the container rear wall 3 with the interposition of the capillary 17.
  • the flush transition is not affected due to the offset in height arrangement of the sealant 19 in the capillary 17.
  • the entire joint depth between the gap bottom 23 and the gap edges 7, 13 may be approximately 8 mm.
  • the filling level h of the sealing means 19 can be from 5 to 6 mm, starting from the gap bottom 13. In this case, free distances x 1 , x 2 between the gap edges 7, 13 and the sealant surface of about 2 to 3 mm.
  • the sealant 19 is in the present embodiment, a liquid paint, such as a silicone resin, which is first applied liquid as a fine bead between the two gap edges 7, 13.
  • a liquid paint such as a silicone resin
  • the liquid silicone resin can penetrate to the gap bottom 23 and collect in the capillary gap 17.
  • the material entry taking place through the application nozzle is dimensioned such that a filling height h results which is offset in height by the distances x 1 , x 2 below the two gap edges 7, 13. Subsequently, in a curing step, the liquid silicone resin can be cured.
  • the entry of the sealant 19 is preferably carried out only after the assembly of the two sheet metal parts 1, 3 to the washing compartment.
  • an application nozzle guided by a robot arm is guided along the capillary gap 17.

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  • Washing And Drying Of Tableware (AREA)
EP12152689.1A 2011-02-14 2012-01-26 Lave-vaisselle et procédé de fabrication d'une cuve de lavage d'un lave-vaisselle Withdrawn EP2486841A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011004056A DE102011004056A1 (de) 2011-02-14 2011-02-14 Geschirrspülmaschine und Verfahren zum Herstellen eines Spülbehälters einer Geschirrspülmaschine

Publications (2)

Publication Number Publication Date
EP2486841A2 true EP2486841A2 (fr) 2012-08-15
EP2486841A3 EP2486841A3 (fr) 2017-06-14

Family

ID=45540811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12152689.1A Withdrawn EP2486841A3 (fr) 2011-02-14 2012-01-26 Lave-vaisselle et procédé de fabrication d'une cuve de lavage d'un lave-vaisselle

Country Status (2)

Country Link
EP (1) EP2486841A3 (fr)
DE (1) DE102011004056A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT521757B1 (de) * 2018-09-28 2021-05-15 Slavonia Baubedarf Gmbh Tragprofil für eine Fassadenkonstruktion
WO2021151660A1 (fr) * 2020-01-28 2021-08-05 BSH Hausgeräte GmbH Lave-vaisselle domestique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216228A1 (de) * 2015-08-25 2017-03-02 BSH Hausgeräte GmbH Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055347A1 (de) 2006-11-23 2008-05-29 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät mit einem aus zumindest zwei Bauteilen zusammengesetzten Behandlungsbehälter
DE102007017280A1 (de) 2007-04-12 2008-10-30 BSH Bosch und Siemens Hausgeräte GmbH Spülbehälter und Verfahren zu seiner Herstellung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303570C2 (de) * 1993-02-08 1997-03-20 Fraunhofer Ges Forschung Verfahren zur Herstellung von funktionellen Beschichtungen, beschichtete Substrate und Beschichtungsmaterial
DE10135647C1 (de) * 2001-07-21 2002-07-25 Daimler Chrysler Ag Verfahren zur Herstellung eines Blechumformteils mit Korrosionsschutz und nach dem Verfahren hergestelltes Blechumformteil
DE10156422B4 (de) * 2001-11-16 2004-01-08 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Abdichten von Dichtungskanälen
DE102005062478A1 (de) * 2005-12-27 2007-07-05 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer Behälterhaube aus preiswertem Stahl
DE102008032195A1 (de) * 2008-07-09 2010-01-14 Tesa Se Verfahren zur Korrosionsschutzbehandlung von Metalloberflächen
DE102009001896B4 (de) * 2009-03-26 2020-06-18 BSH Hausgeräte GmbH Geschirrspülmaschine, zugehöriges Verfahren sowie Vorrichtung zu deren Herstellung
DE102011003789A1 (de) * 2011-02-08 2012-08-09 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Herstellung einer Geschirrspülmaschine und Geschirrspülmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055347A1 (de) 2006-11-23 2008-05-29 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät mit einem aus zumindest zwei Bauteilen zusammengesetzten Behandlungsbehälter
DE102007017280A1 (de) 2007-04-12 2008-10-30 BSH Bosch und Siemens Hausgeräte GmbH Spülbehälter und Verfahren zu seiner Herstellung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT521757B1 (de) * 2018-09-28 2021-05-15 Slavonia Baubedarf Gmbh Tragprofil für eine Fassadenkonstruktion
WO2021151660A1 (fr) * 2020-01-28 2021-08-05 BSH Hausgeräte GmbH Lave-vaisselle domestique

Also Published As

Publication number Publication date
EP2486841A3 (fr) 2017-06-14
DE102011004056A1 (de) 2012-08-16

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