EP0852928B1 - Geschirrspülmaschine mit einem Ober- und Untersprüharm, einer Umwälzpumpe und einer Entleerungspumpe - Google Patents

Geschirrspülmaschine mit einem Ober- und Untersprüharm, einer Umwälzpumpe und einer Entleerungspumpe Download PDF

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Publication number
EP0852928B1
EP0852928B1 EP97121799A EP97121799A EP0852928B1 EP 0852928 B1 EP0852928 B1 EP 0852928B1 EP 97121799 A EP97121799 A EP 97121799A EP 97121799 A EP97121799 A EP 97121799A EP 0852928 B1 EP0852928 B1 EP 0852928B1
Authority
EP
European Patent Office
Prior art keywords
spray arm
dishwashing machine
pump
machine according
bearing
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.)
Expired - Lifetime
Application number
EP97121799A
Other languages
English (en)
French (fr)
Other versions
EP0852928A3 (de
EP0852928A2 (de
Inventor
Harry Jürgen Rapke
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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
Priority claimed from DE19652235A external-priority patent/DE19652235C2/de
Priority claimed from DE1996152231 external-priority patent/DE19652231C2/de
Priority claimed from DE1996152233 external-priority patent/DE19652233C2/de
Priority claimed from DE1997102982 external-priority patent/DE19702982C2/de
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP0852928A2 publication Critical patent/EP0852928A2/de
Publication of EP0852928A3 publication Critical patent/EP0852928A3/de
Application granted granted Critical
Publication of EP0852928B1 publication Critical patent/EP0852928B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L15/4202—Water filter means or strainers
    • 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

  • the invention relates to a dishwashing machine with lower and upper spray arm and with a circulating pump for the circulating operation of the rinse water and a wash liquor pump in the sump in the bottom of the rinsing reservoir for the removal by suction of the rinse water in suction operation.
  • the object of the invention in a dishwashing machine of the previously mentioned type, is to arrange the circulating pump and the wash liquor pump in such a way that, in the circulating operation itself, the deposited dirt particles which are in the area of the wash liquor pump are not fed again to the spray arms.
  • the bearing shell with the outer collar is placed in a vertically adjustable position in the radial bearing which can be raised in the circulating operation by the flow of rinse water and which is used for coupling the lower spray arm to a coupling portion arranged in the lower crockery basket; then the rinse water can be directed over the lower spray arm and the coupling portion in the lower crockery basket, leak-free to the upper spray arm, especially when the coupling portion in the lower crockery basket can also be adjusted upwards in a restricted vertical direction and connects to the upper spray arm.
  • the design of the fine filter comprises a filter casing and an attached fine filter plate or similar.
  • the filter casing has an upper inlet region and a lower inlet region, and in that the fine filter plate covers the lower inlet region, and in that the bearing shell of the lower spray arm extends to within the upper inlet region and that underneath the bearing shell in the fine filter a vertically adjustable disc-shaped valve element is placed, which can be raised, in the circulating operation, by the rinse water thereby opening the lower inlet region of the filter casing while, when reversing the direction of the rotation of the pump unit, the rinse water, which is being suctioned back from the spray arms, lowers the valve element to seal the lower inlet region.
  • a bypass is opened so that sufficient rinse water can be suctioned in and fed to the spray arms.
  • the pump unit In the suction operation the pump unit is reversed at least for a short time in its direction of rotation, closing the bypass.
  • the rinse water which is suctioned back from the spray arms and the bearing shell is forced through the fine filter plate, the adhering dirt particles on its exterior surface being forced off and removed by the wash liquor pump.
  • the bottom of the sump in the region of the circulating pump is pulled up as a cylindrical dome, to the underside of which the electric motor of the circulating pump is attached and to which the cylindrical filter casing is fixed.
  • the radial bearing is constructed from two bearing shells between which an outer collar of the bearing sleeve is rotatably placed, and that the bearing shell facing the lower spray arm is adjustable in the bearing shell backer, which faces away from the lower spray arm, in a restricted vertical direction and in that the bearing shell, which faces away from the lower spray arm, is detachably fixed in the associated recess of the strainer plate, then the lower spray arm and the fine filter can be removed from the machine in a simple manner, when the lower crockery basket has been taken out.
  • the attachment of the fine filter in the strainer plate is simplified further in that the filter casing on the front-side turned towards the lower spray arm bears an outer collar; over the latter and over the bearing shell, facing away from the lower spray arm, the fine filter is held detachably in the strainer plate.
  • valve element The adjustment movement of the valve element is limited in that the valve element in the open position strikes the open lower front-side of the bearing sleeve and in that the valve element causes a seal in the lower closed position towards the bottom of the sump and towards a closed ring of the filter which divides the upper and the lower inlet region.
  • valve element can then, without impairment, be placed by the pump unit into the fine filter, so that the valve element has a central bore the diameter of which is greater than the outer diameter of the pump assembly but smaller than the outer diameter of the bearing shell.
  • a strainer plate 15 In the partial section in the bottom of the rinsing reservoir the sump 11 can be seen which is covered by means of a strainer plate 15.
  • a coarse filter 13 In a first recess of the strainer plate 15 a coarse filter 13 is placed, in which the wash liquor pump 12 is incorporated.
  • the fine filter 7 is divided into an upper inlet region 14 and a lower inlet region 16.
  • the filter casing 5 is, at the same time, shaped like a cage, so that large-surface inlet regions 14 and 16 arise which are separated from each other by a closed ring of the filter casing 5.
  • the fine filter plate 9 covers the upper inlet region 14.
  • the fine filter 7 is attached to a dome in the bottom of the sump 11. On the outside of the dome the electric motor 4 of the circulating pump 1 is attached.
  • the upper front-side of the fine filter 7 bears an outer collar 21 which is held between a lower bearing shell 17 and the filter plate 15.
  • an upper bearing shell 18 can be adjusted upwards in a vertically restricted direction.
  • an outer collar 20 of a bearing sleeve 2 of the lower spray arm 8 is placed in a rotatable position.
  • the bearing sleeve 2 is attached to the lower spray arm 8 in one piece and extends over the upper inlet region 14 of the fine filter 7. Underneath the bearing sleeve 2 in the fine filter 7 a valve element 6 is placed in a vertically adjustable position.
  • the valve element 6 is disc-shaped, turning the concave side to the lower spray arm 8.
  • the valve element 6 has a central bore, the diameter of which is bigger than the pump unit 1 which projects into the bearing sleeve 2, but smaller than the outer diameter of the bearing sleeve 2.
  • a bellows seal 22 seals the junction between the pump unit 1 and the sump 11.
  • FIG. 1 shows, rinse water is removed by suction out of the sump 11 in the circulating operation.
  • the flow of the rinse water is shown by arrows.
  • the valve element 6 is raised, at the same time, by the suctioned-in rinse water, ensuring that the outer edge of the rim of the valve element 6, which is aligned parallel to the adjustable direction, has an accurate seating, when the latter stays on the closed ring of the filter casing 5.
  • the rinse water is in part removed by suction over the fine filter plate 9 and filtered while another part is delivered unfiltered through the open bypass which is above the lower inlet region 16 into the bearing sleeve 2.
  • the lower spray arm 8 is raised so that the outlet 24 of the lower spray arm 8 is connected to the inlet opening 25 of a coupling section 3, which is arranged in the lower crockery basket 40 and creates a tight conduit for the rinse water to the upper spray arm.
  • the coupling section 3 can also itself be placed in the lower crockery basket 40 in a limited vertically adjustable position, so that it displaces vertically and is connected with its outlet opening to the entry opening of the upper spray arm which is not shown.
  • the pump assembly 1 does not require its own pump casing and causes agitation in the rinse water, the direction of rotation of which corresponds with the direction of rotation of the spray arms which are predetermined by the Segner's drive of the same.
  • the rinse water in the region of the coarse water filter 13 and the wash liquor pump is not agitated, so that a calm water region exists in which the dirt particles can settle.
  • the rinse water will then be directed out of the sump 11.
  • the circulating pump 4 can be operated for at least a short while in the reverse direction of rotation.
  • the pump unit 1 suctions the rinse water back from the spray arms and the bearing sleeve 2 as can be ascertained from Figure 2.
  • the valve element 6 is moved downwards until it touches the sump 11 and seals the lower inlet region 16.
  • the suctioned-back rinse water must pass over the fine filter plate 9 in the upper inlet region 14, pushing back the adhering dirt on the outside of the same and feeding the discharge over the coarse filter 13 and the wash liquor pump 12.
  • the lower spray arm 8 and, if necessary, the coupling section 3 are brought into their lower exit positions, so that, after the suction operation, the lower crockery basket 40 can be withdrawn from the rinsing reservoir.

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (10)

  1. Geschirrspülmaschine mit einem unteren Sprüharm und einem oberen Sprüharm (8) sowie mit einer Umlaufpumpenanordnung (1, 4) für den Umlaufbetrieb des Spülwassers und einer im Auffangbecken am Boden des Spülbehälters angeordneten Laugenpumpe (12) zur Entfernung des Spülwassers mittels Absaugens im Saugbetrieb,
    dadurch gekennzeichnet, dass
    das am Boden des Spülwasserbehälters angeordnete Auffangbecken (11) durch eine Siebfilterplatte (15) abgedeckt ist,
    in einer ersten Ausnehmung der Siebfilterplatte (15) ein Grobfilter (13) angeordnet ist, über das mittels einer integrierten Laugenpumpe (12) das Spülwasser durch Absaugen entfernt wird,
    in einer zweiten Ausnehmung der Siebfilterplatte (15), getrennt von der Laugenpumpe (12), der untere Sprüharm (8) mittels Radiallager (10) angeordnet ist, wobei ein nach unten offenes Lagerrohr (2) in derartiger Weise angeordnet ist, dass es sich drehen kann,
    das Lagerrohr (2) des unteren Sprüharms (8) durch ein Feinfilter (7) abgeschlossen ist, das durch das Radiallager (10) gehalten wird, und
    die Umlaufpumpe (4) der Pumpenanordnung (1) in das Lagerrohr (2) des unteren Sprüharms ragt, wobei dieses Lagerrohr (2) als Gehäuse der Umlaufpumpe dient.
  2. Geschirrspülmaschine nach Anspruch 1,
    dadurch gekennzeichnet, dass das Lagerrohr (2) mittels eines Außenkragens (20) in einer vertikal verstellbaren Position angeordnet ist, dass dieses Lagerrohr beim Umlaufbetrieb durch den Fluss des Spülwassers angehoben werden kann und dass dieses Lagerrohr zur Kopplung des unteren Sprüharms (8) mit einem in einem unteren Geschirrkorb (40) angeordneten Kopplungsteil (3) verwendet wird.
  3. Geschirrspülmaschine nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass das Feinfilter (7) ein Filtergehäuse (5) und eine daran befestigte Feinfilterplatte (9) aufweist.
  4. Geschirrspülmaschine nach Anspruch 3,
    dadurch gekennzeichnet, dass
    das Filtergehäuse (5) einen oberen Eingangsbereich (14) und einen unteren Eingangsbereich (16) aufweist,
    die Feinfilterplatte (9) den oberen Eingangsbereich (14) abdeckt,
    das Lagerrohr (2) des unteren Sprüharms (8) in den oberen Eingangsbereich (14) ragt und
    im Feinfilter (7) unterhalb des Lagerrohrs (2) ein vertikal verstellbares, schalenförmiges Ventilelement (6) angeordnet ist, das während des Umlaufbetriebs durch das Spülwasser angehoben werden kann und dabei den unteren Eingangsbereich (16) des Filtergehäuses (5) öffnet, während bei umgekehrter Drehrichtung der Pumpeneinheit (1) das aus dem Sprüharm (8) abgesaugte Spülwasser das Ventilelement (6) zur Abdichtung des unteren Eingangsbereichs (16) absenkt.
  5. Geschirrspülmaschine nach Anspruch 3 oder 4,
    dadurch gekennzeichnet, dass der Boden des Auffangbeckens (11) im Bereich der Umlaufpumpe (4) als zylindrischer Dom ausgestülpt ist, an dessen Unterseite der Elektromotor der Umlaufpumpe (4) und an dem das zylindrische Filtergehäuse (5) befestigt ist.
  6. Geschirrspülmaschine nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass das Radiallager (10) aus zwei Lagerhülsen (17, 18) gebildet ist, zwischen denen ein Außenkragen (20) der Lagerhülse (2) des untern Sprüharms drehbar angeordnet ist, wobei die dem unteren Sprüharm (8) zugewandte Lagerhülse (17) in der dem unteren Sprüharm (8) abgewandten Lagerhülse (18) in einer beschränkten vertikalen Richtung einstellbar ist, und dass die dem unteren Sprüharm (8) abgewandte Lagerhülse (17) in der zugeordneten Ausnehmung der Siebfitterplatte (15) abnehmbar befestigt ist.
  7. Geschirrspülmaschine nach Anspruch 6,
    dadurch gekennzeichnet, dass das Filtergehäuse (5) auf der dem unteren Sprüharm (8) zugewandten Vorderseite einen Außenkragen (21) trägt und dass das Feinfilter (7) über diesen Außenkragen und die dem unteren Sprüharm (8) abgewandte Lagerhülse (17) in der Siebfilterplatte (15) abnehmbar gehalten wird.
  8. Geschirrspülmaschine nach einem der Ansprüche 4 bis 7,
    dadurch gekennzeichnet, dass das Ventilelement (6) in der geöffneten Stellung auf die offene, untere Vorderseite der Lagerhülse (2) stößt, dass das Ventilelement (6) eine Abdichtung in der unteren Schließstellung in Richtung auf den Boden des Auffangbehälters (11) und in Richtung auf einen geschlossenen Ring des Filtergehäuses (5) bewirkt, wobei dieser Ring den oberen Eingangsbereich (14) vom unteren Eingangsbereich (16) trennt.
  9. Geschirrspülmaschine nach einem der Ansprüche 4 bis 8,
    dadurch gekennzeichnet, dass das Ventilelement (6) eine zentrale Bohrung aufweist, deren Durchmesser größer als der Außendurchmesser der Pumpenanordnung (1), jedoch kleiner als der Außendurchmesser des Lagerrohrs (2) ist.
  10. Geschirrspülmaschine nach einem der Ansprüche 1 bis 9,
    dadurch gekennzeichnet, dass eine Balgdichtung (22) die Pumpeneinheit (1) gegen den Boden des Auffangbeckens (11) abdichtet.
EP97121799A 1996-12-16 1997-12-11 Geschirrspülmaschine mit einem Ober- und Untersprüharm, einer Umwälzpumpe und einer Entleerungspumpe Expired - Lifetime EP0852928B1 (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE19652235A DE19652235C2 (de) 1996-12-16 1996-12-16 Geschirrspülmaschine mit unterem Sprüharm und Umwälzpumpe für das Spülwasser
DE19652233 1996-12-16
DE19652231 1996-12-16
DE19652235 1996-12-16
DE1996152231 DE19652231C2 (de) 1996-12-16 1996-12-16 Geschirrspülmaschine mit einem unteren und einem oberen Sprüharm sowie einer Umwälzpumpe für das Spülwasser
DE1996152233 DE19652233C2 (de) 1996-12-16 1996-12-16 Geschirrspülmaschine mit einem unteren und einem oberen Sprüharm sowie einer Umwälzpumpe für das Spülwasser
DE1997102982 DE19702982C2 (de) 1997-01-28 1997-01-28 Geschirrspülmaschine mit unterem und oberem Sprüharm sowie mit Umwälzpumpe und Laugenpumpe
DE19702982 1997-01-28

Publications (3)

Publication Number Publication Date
EP0852928A2 EP0852928A2 (de) 1998-07-15
EP0852928A3 EP0852928A3 (de) 1999-01-27
EP0852928B1 true EP0852928B1 (de) 2003-04-23

Family

ID=27438510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121799A Expired - Lifetime EP0852928B1 (de) 1996-12-16 1997-12-11 Geschirrspülmaschine mit einem Ober- und Untersprüharm, einer Umwälzpumpe und einer Entleerungspumpe

Country Status (3)

Country Link
EP (1) EP0852928B1 (de)
DE (1) DE69721211T2 (de)
ES (1) ES2197289T3 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100556779B1 (ko) * 2003-12-05 2006-03-10 엘지전자 주식회사 식기세척기
DE102004019334A1 (de) 2004-04-21 2005-11-17 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit selbstreinigenden Spülflüssigkeitsleitungen
US8240321B2 (en) 2009-12-18 2012-08-14 Whirlpool Corporation Magnetic drive controlled rotation for dishwasher spray arm
EP3545812B1 (de) * 2018-03-27 2023-05-24 Miele & Cie. KG Geschirrspülmaschine, insbesondere haushaltsgeschirrspülmaschine
CN108634818A (zh) * 2018-07-10 2018-10-12 江门市蓬江区硕泰电器有限公司 一种洗涤机
CN110859566A (zh) * 2018-08-28 2020-03-06 佛山市顺德区美的洗涤电器制造有限公司 喷臂组件及具有其的洗涤电器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB907556A (en) * 1960-01-04 1962-10-10 Waste King Corp Improvements in or relating to dishwashers
US3375835A (en) * 1965-09-23 1968-04-02 Whirlpool Co Article washing apparatus
DE1528747B1 (de) * 1965-11-09 1970-09-24 Licentia Gmbh Pumpeinrichtung,insbesondere fuer Geschirrspuel- oder Waschmaschinen
IT209170Z2 (it) * 1985-11-13 1988-09-16 Zanussi Elettrodomestici Macchina lavastoviglie con filtro di ricircolo autopulente.
IT223520Z2 (it) * 1990-12-17 1995-07-20 Zanussi Elettrodomestici Lavastoviglie con cesto estraibile

Also Published As

Publication number Publication date
EP0852928A3 (de) 1999-01-27
DE69721211T2 (de) 2003-12-11
DE69721211D1 (de) 2003-05-28
ES2197289T3 (es) 2004-01-01
EP0852928A2 (de) 1998-07-15

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