EP2556781A1 - Agencement de bras pulvérisateur d'un lave-vaisselle - Google Patents

Agencement de bras pulvérisateur d'un lave-vaisselle Download PDF

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Publication number
EP2556781A1
EP2556781A1 EP12177743A EP12177743A EP2556781A1 EP 2556781 A1 EP2556781 A1 EP 2556781A1 EP 12177743 A EP12177743 A EP 12177743A EP 12177743 A EP12177743 A EP 12177743A EP 2556781 A1 EP2556781 A1 EP 2556781A1
Authority
EP
European Patent Office
Prior art keywords
spray arm
bearing
recesses
dishwasher
holding element
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.)
Granted
Application number
EP12177743A
Other languages
German (de)
English (en)
Other versions
EP2556781B1 (fr
Inventor
Andrzej Budzynski
Bernd Heisele
Alfred Wasner
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 Hausgeräte 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
Priority to PL12177743T priority Critical patent/PL2556781T3/pl
Publication of EP2556781A1 publication Critical patent/EP2556781A1/fr
Application granted granted Critical
Publication of EP2556781B1 publication Critical patent/EP2556781B1/fr
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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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays

Definitions

  • a dishwasher has a rinsing container in which items to be cleaned can be accommodated.
  • a spray arm arrangement for a dishwasher in particular a household dishwasher
  • the spray arm assembly includes a spray arm and a support member for holding the spray arm, wherein the spray arm is rotatably supported on the support member.
  • a bearing portion and (at least) an abutment portion are provided for rotatably supporting the spray arm on the holding element.
  • the bearing portion further has recesses which have a widening shape.
  • the widening or broadening shape of the recesses provided in the spray arm arrangement according to the invention offers the possibility that the groove cross-sectional area for the dirt particles in the outlet direction (surroundings) increases.
  • the dirt entering the spray arm bearing in the rinsing mode can be more easily removed or rinsed out so that dirt buildup and jamming of the rotatable spray arm can be prevented.
  • the consequence of this is a reduced bearing friction, and increased dirt compatibility of Sprüharmlagers. This is particularly advantageous for the case of a relatively small spray arm length of the spray arm used.
  • flared recesses may further be made - as compared to a "normal" enlargement of the bearing gap - without a change in the spray arm bearing leakage (due to leaking flushing fluid in the bearing).
  • the cross-section at the entrance of the flared recesses may be the same as in rectangular recesses of a conventional spray arm assembly, whereby the hydraulic cross section of the bearing in question remains the same.
  • the design with widening "free spaces” thus has no pressure drop to cleaning nozzles of the spray arm, and therefore no effect on the cleaning performance result.
  • the retaining element has the bearing portion with the recesses, and the spray arm on the associated abutment portion.
  • the bearing portion is enclosed by the abutment portion.
  • the recesses of the bearing section have mutually obliquely extending side walls or side surfaces.
  • Such a "double bevel" or V-shape allows reliable removal of dirt particles. Also, such a form can be relatively easily trained.
  • the bearing section has (additionally) a mold separation region.
  • the mold separation region has a shape running obliquely to the abutment portion.
  • the mold separation area which may be provided with corresponding Entformungsschrägen, offers the possibility of easy production of the bearing portion having plastic component by injection molding.
  • the obliquely extending to the abutment portion contour allows, similar to the flared recesses, present in the outlet direction cross-sectional enlargement of the bearing gap. In this way, easy flushing away of dirt can be achieved even in the region of the mold separation area.
  • a further bearing section and a further counter bearing section are provided for rotatably supporting the spray arm on the retaining element.
  • the further bearing section recesses in order to cause a flushing of dirt particles.
  • the above-described bearing portion and the associated abutment portion may form a first or upper bearing point, and the further bearing portion and the further abutment portion for this purpose (axially) offset second or lower bearing point of the Sprüharman extract. In this way, a reliable pivotal mounting of the spray arm can be achieved.
  • the holding element can also be designed such that in an area between The two bearing points rinsing liquid in the spray arm (um-) can be passed.
  • the further bearing section and the further abutment section provision may also be made for the further (or lower) bearing section with the recesses on the retaining element and the further (or lower) abutment section to be provided on the spray arm, the further abutment section being the further one Bearing section encloses.
  • the recesses of the further (or lower) bearing section may moreover be provided to also form the recesses of the further (or lower) bearing section with a widening shape, in particular with side walls running obliquely to one another, which is connected to a cross-sectional enlargement in the outlet direction.
  • the holding element has a holding section on which the spray arm is supported. During a rotational movement of the spray arm (or on the holding portion supporting portion) to slide on the holding section along.
  • a dishwashing machine in particular a household dishwasher, which comprises a spray arm arrangement according to one of the embodiments described above.
  • the widening shape of the recesses of the bearing portion in this case allows easier removal of dirt particles, whereby blocking of the rotatably mounted on the holding element spray arm can be avoided.
  • the holding element is attached to an inlet pipe of the dishwasher.
  • an inlet pipe of the dishwasher for example, a configuration in the form of a bayonet closure come into consideration.
  • the holding element may be provided with laterally projecting locking elements, and the inlet pipe with recesses for receiving the locking elements.
  • a holding element for holding a spray arm of a dishwasher.
  • the holding element is designed for rotatable mounting of the spray arm and has (for this purpose) a bearing section having recesses.
  • the recesses of the bearing section have a widening shape.
  • the widening or broadening shape of the recesses in this case allows an enlargement of the cross-sectional area in the outlet direction, whereby dirt, which is introduced into a bearing formed by the bearing portion of the retaining element and an associated abutment portion of the spray arm bearing position in the flushing operation can be relatively easily rinsed again.
  • the widening recesses thus allow a reduced bearing friction, and increased dirt resistance.
  • the holding element which can also be designed in the manner described above for attachment to a feed pipe of the dishwasher, can also be used to retrofit a dishwasher, to a conventional holding element, which (except) can be made identical except for the recesses (substantially) replace.
  • a conventional holding element which (except) can be made identical except for the recesses (substantially) replace.
  • the (retrofittable) holding element can also the above-described embodiments such as mutually oblique side walls of the recesses (V-shape), the provision of a sloping mold separation region, the provision of a further storage section with (preferably flared) recesses, the provision of a holding section, etc. come into consideration.
  • FIGS. 1 and 2 show a schematic representation of a possible embodiment of these two components 100, 200.
  • FIGS. 3 to 7 illustrate a further possible embodiment, wherein except for minor, present at the holding element 100 deviations substantially the same structure is present. Therefore, in the following description, the FIGS. 1 and 2 to the clarification of (matching) features partly on the in the FIGS. 3 to 7 illustrated embodiment, reference is made.
  • the spray arm 200 can be guided along the holding section 170 of the holding element 100, and is guided radially via the upper and lower bearing points 301, 302.
  • a (small) part of the rinsing liquid is also forced through the bearing points 301, 302 or relatively small gaps present in this area, as also in FIG FIG. 1 indicated by arrows.
  • a lubrication of the bearings 301, 302 can be achieved.
  • This also applies to the area in which the spray arm 200 slides on the holding portion 170 of the holding member 100 during the rotational movement.
  • the associated leakage can be neglected due to the small gap or gaps.
  • the spray arm 200 Adjacent to the border 225, the spray arm 200 in an upper portion of the base portion on a radially encircling wall portion which forms an inwardly directed, protruding abutment portion 220 and is connected to the upper bearing point 301 (see. FIGS. 1 and 5 ).
  • a radially encircling support portion 255 In a lower portion of the base portion of the spray arm 200 has a radially encircling support portion 255, by means of which the spray arm 200 is supported on the holding portion 170 of the holding member 100, and over which the spray arm 200 can slide on the holding portion 170 during the rotational movement.
  • the support section 255 merges into or is connected to a peripheral wall section of the spray arm 200 serving as an abutment section 250, which is provided in the region of the lower bearing point 302.
  • the abutment portions 220, 250 of the spray arm 200 may be provided to connect the two abutment portions 220, 250 via two, arranged between the Sprüharmschenkeln 210 inner partitions.
  • This embodiment is illustrated in the form of two partitions 230.
  • the spray arm 200 can be given a higher stability.
  • the intermediate walls 230 can ensure that rinsing fluid coming from the retaining element 100 or redirected in the direction of the side walls 230 is deflected directly to the spray arm limbs 210. Outer side of the intermediate walls 230 are due to the oval shape of the base portion of the spray arm 200, further wall sections before (see. FIG. 5 ).
  • the upper bearing 301 becomes, as in FIG. 1 shown, formed by the outer or outward, circumferential bearing portion 120 of the holding member 100, and the inward or inward, circumferential abutment portion 220 of the spray arm 200.
  • the abutment portion 220 is in the form of an inwardly projecting survey whose inwardly directed, radially encircling and continuous side surface serves for abutment or radial guidance.
  • the corresponding bearing portion 120 of the holding element 100 comprises a radial guide surface which is interrupted by recessed cutouts 122, whereby a structure with the guide surface "supporting" and serving for guidance, curved elevations 121 and recesses 122 is present (see also FIGS. 3 and 4 ).
  • the recesses 122 serve as "free spaces", whereby the bearing gap is increased at these locations and dirt particles, which are pressed together with the rinsing liquid into or through the upper bearing 301, can be flushed away to the outside. In this way, accumulation of dirt, and associated adverse effects such as increased bearing friction and blocking of the spray arm movement, can be prevented. Such a danger may in particular exist in the case of the upper bearing point 301, through which, compared to the lower bearing point 302, more flushing liquid is usually forced through.
  • the recesses 122 are provided at the bearing portion 120 with a widening in the exit direction of the rinsing liquid form.
  • the recesses 122 are opposite side walls or side surfaces of the recesses 122, as in FIG. 1 shown obliquely to each other extending, whereby the recesses 122 have a V-shaped contour.
  • the V-shape ("double slope") of the recesses 122 has the consequence that increases the cross-sectional area of the recesses 122 in the exit direction.
  • To illustrate the increasing cross section are in the supervisory view of FIG. 2 a present at the entrance of a recess 122 cross-sectional width A, and indicated at the outlet of the recess 122 and the cross-sectional width A exceeding cross-sectional width B indicated.
  • Due to the present in the exit direction cross-sectional enlargement of the dirt due to the "flushing water stream" through the bearing 301 can be relatively easily and reliably dissipated or flushed, whereby a reduced bearing friction and increased soil compatibility can be effected.
  • jamming of the spray arm 200 can be prevented with high reliability. This is particularly advantageous if the spray arm 200 has a relatively small spray arm - and thus lever arm length, whereby a relatively small drive torque can be generated via the flushing liquid emerging from the cleaning nozzles (only).
  • the holding member 100 with the V-shaped recesses 122 may further be formed such that the cross-section at the entrance of the recesses 122 is the same as in rectangular (upper) recesses of a holding member of a conventional Sprüharman extract.
  • the configuration shown here of the recesses 122 with the widening or widening shape with the same hydraulic cross section of the associated bearing 301 can be realized. It follows from this that, in comparison to designs with the conventional rectangular shape, neither a pressure drop at the Sprüharmdüsen, nor an effect on the cleaning performance is caused.
  • a step-shaped Column shape lies in the region of the upper bearing point 301 due to the inwardly projecting abutment portion 220 of the spray arm 200 and over the bearing portion 120 and over the elevations 121 of the bearing portion 120 protruding intermediate portion 130 of the support member 100 is a step-shaped Column shape before.
  • the step shape results in a structure corresponding to a labyrinth seal, whereby a corresponding hydraulic resistance is achieved, and an outflow of rinsing liquid through the bearing 301 (in addition) can be limited.
  • the lower bearing location 302 of the spray arm assembly becomes, as in FIG FIG. 1 shown formed by the outer or outward, circumferential bearing portion 150 of the holding member 100, and the inward or inward, circumferential abutment portion 250 of the spray arm 200.
  • the abutment portion 250 which forms the support portion 255 toward the bottom of the spray arm 200 and is connected to the support portion 255, forms an inwardly directed, radially encircling, continuous and suitable for guiding side surface.
  • the associated bearing portion 150 of the retaining element 100 has a shape comparable to the upper bearing portion 120.
  • the bearing portion 150 (again) includes a radial guide surface interrupted by recessed recesses 152, thereby providing a structure with guide and arcuate projections 151 and recesses 152.
  • the recesses 152 allow external flushing of dirt particles, which are pressed together with the rinsing liquid into or through the lower bearing 302.
  • the recesses 152 as the upper recesses 122 also here, as in FIG. 1 shown, a widening in the exit direction of the washing liquid form with obliquely extending side walls or a V-shape, which leads to a cross-sectional enlargement in the exit direction.
  • the cross section at the entrance of the recesses 152 is the same as in the case of rectangular (lower) recesses of a conventional holding element.
  • FIGS. 3 to 7 A further embodiment of a spray arm arrangement for a dishwasher 300 having a holding element 100 and a spray arm 200 rotatably arranged on the holding element 100 is described.
  • the spray arm 200 is constructed in accordance with the manner described above.
  • For the Holding element 100 is, except for differences in the area of the two bearing sections 120, 150, a structure comparable to that in the FIGS. 1 and 2 shown holding element 100 before.
  • the latching elements 111 can be matched to corresponding latching receptacles of a feed tube 310 of the dishwasher 300, so that by inserting the fixing section 110 into the feed tube 310 (see FIG. FIG. 1 ) and a subsequent twisting the retaining element 100 can be releasably secured to the inlet pipe 310 (bayonet lock).

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  • Washing And Drying Of Tableware (AREA)
EP20120177743 2011-08-08 2012-07-25 Agencement de bras pulvérisateur d'un lave-vaisselle Active EP2556781B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12177743T PL2556781T3 (pl) 2011-08-08 2012-07-25 Zespół ramienia spryskującego do zmywarki do naczyń

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011080621A DE102011080621A1 (de) 2011-08-08 2011-08-08 Sprüharmanordnung einer Geschirrspülmaschine

Publications (2)

Publication Number Publication Date
EP2556781A1 true EP2556781A1 (fr) 2013-02-13
EP2556781B1 EP2556781B1 (fr) 2015-04-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120177743 Active EP2556781B1 (fr) 2011-08-08 2012-07-25 Agencement de bras pulvérisateur d'un lave-vaisselle

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EP (1) EP2556781B1 (fr)
DE (1) DE102011080621A1 (fr)
PL (1) PL2556781T3 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014110397A1 (de) 2014-07-23 2016-01-28 Melag Medizintechnik Ohg Spülarmanordnung für eine programmgesteuerte Spülmaschine
WO2016069333A1 (fr) * 2014-10-27 2016-05-06 Illinois Tool Works Inc. Système de bras de rinçage pour lave-vaisselle
US9763554B2 (en) 2012-02-14 2017-09-19 Premark Feg L.L.G. Warewash machine with removable rotating arm and related method
WO2018006976A1 (fr) * 2016-07-08 2018-01-11 Electrolux Appliances Aktiebolag Ensemble bras de lavage et lave-vaisselle comprenant un ensemble bras de lavage
WO2022008562A1 (fr) * 2020-07-08 2022-01-13 Meiko Maschinenbau Gmbh & Co. Kg Système de circulation de fluide notamment destiné à être utilisé dans un dispositif de lavage
US11464391B2 (en) 2017-10-31 2022-10-11 Electrolux Appliances Aktiebolag Spray arm assembly
US11612299B2 (en) 2017-10-31 2023-03-28 Electrolux Appliances Aktiebolag Wash arm assembly
EP4652913A1 (fr) * 2024-05-23 2025-11-26 Electrolux Professional S.p.A. Dispositif de montage pour bras de lavage et de rinçage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102025104758B3 (de) * 2025-02-10 2026-02-05 BSH Hausgeräte GmbH Lager-Sprüharm-Anordnung, Haushalts-Geschirrspülmaschine und Verfahren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2757615A1 (de) * 1977-12-23 1979-06-28 Licentia Gmbh Sprueharmlagerung bei geschirrspuelmaschinen
DE19963496A1 (de) * 1999-12-28 2001-07-05 Johannes Guggenberger Vorrichtung zum Reinigen mit einer rotierenden Düse
DE20113227U1 (de) * 2001-08-09 2001-10-25 Whirlpool Corp., Benton Harbor, Mich. Drehlagerung für einen Sprüharm einer Geschirrspülmaschine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1182785B (de) * 1962-05-23 1964-12-03 Linde Eismasch Ag Spuelmaschine, insbesondere fuer Geschirr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2757615A1 (de) * 1977-12-23 1979-06-28 Licentia Gmbh Sprueharmlagerung bei geschirrspuelmaschinen
DE19963496A1 (de) * 1999-12-28 2001-07-05 Johannes Guggenberger Vorrichtung zum Reinigen mit einer rotierenden Düse
DE20113227U1 (de) * 2001-08-09 2001-10-25 Whirlpool Corp., Benton Harbor, Mich. Drehlagerung für einen Sprüharm einer Geschirrspülmaschine

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10307036B2 (en) 2012-02-14 2019-06-04 Premark Feg L.L.C. Warewash machine with removable rotating arm and related method
US9763554B2 (en) 2012-02-14 2017-09-19 Premark Feg L.L.G. Warewash machine with removable rotating arm and related method
DE202014011149U1 (de) 2014-07-23 2018-02-23 Melag Medizintechnik Ohg Spülarmanordnung für eine programmgesteuerte Spülmaschine
DE102014110397A1 (de) 2014-07-23 2016-01-28 Melag Medizintechnik Ohg Spülarmanordnung für eine programmgesteuerte Spülmaschine
WO2016069333A1 (fr) * 2014-10-27 2016-05-06 Illinois Tool Works Inc. Système de bras de rinçage pour lave-vaisselle
CN107205610A (zh) * 2014-10-27 2017-09-26 伊利诺斯工具制品有限公司 用于物品洗涤器的冲洗臂系统
US10631706B2 (en) 2014-10-27 2020-04-28 Illinois Tool Works Inc. Rinse arm system for warewasher
US20190335973A1 (en) * 2016-07-08 2019-11-07 Electrolux Appliances Aktiebolag Wash arm assembly and dishwasher comprising wash arm assembly
CN109414148A (zh) * 2016-07-08 2019-03-01 伊莱克斯电器股份公司 洗涤臂组件和包括洗涤臂组件的洗碗机
WO2018006976A1 (fr) * 2016-07-08 2018-01-11 Electrolux Appliances Aktiebolag Ensemble bras de lavage et lave-vaisselle comprenant un ensemble bras de lavage
US11219349B2 (en) 2016-07-08 2022-01-11 Electrolux Appliances Aktiebolag Wash arm assembly and dishwasher comprising wash arm assembly
CN109414148B (zh) * 2016-07-08 2022-02-22 伊莱克斯电器股份公司 洗涤臂组件和包括洗涤臂组件的洗碗机
AU2016413897B2 (en) * 2016-07-08 2023-04-06 Electrolux Appliances Aktiebolag Wash arm assembly and dishwasher comprising wash arm assembly
US11464391B2 (en) 2017-10-31 2022-10-11 Electrolux Appliances Aktiebolag Spray arm assembly
US11612299B2 (en) 2017-10-31 2023-03-28 Electrolux Appliances Aktiebolag Wash arm assembly
WO2022008562A1 (fr) * 2020-07-08 2022-01-13 Meiko Maschinenbau Gmbh & Co. Kg Système de circulation de fluide notamment destiné à être utilisé dans un dispositif de lavage
EP4652913A1 (fr) * 2024-05-23 2025-11-26 Electrolux Professional S.p.A. Dispositif de montage pour bras de lavage et de rinçage

Also Published As

Publication number Publication date
PL2556781T3 (pl) 2015-10-30
EP2556781B1 (fr) 2015-04-29
DE102011080621A1 (de) 2013-02-14

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