EP0338484B1 - Dispositif de vidange d'accumulateur de liquide pour appareils ménagers à circulation d'eau - Google Patents

Dispositif de vidange d'accumulateur de liquide pour appareils ménagers à circulation d'eau Download PDF

Info

Publication number
EP0338484B1
EP0338484B1 EP89106861A EP89106861A EP0338484B1 EP 0338484 B1 EP0338484 B1 EP 0338484B1 EP 89106861 A EP89106861 A EP 89106861A EP 89106861 A EP89106861 A EP 89106861A EP 0338484 B1 EP0338484 B1 EP 0338484B1
Authority
EP
European Patent Office
Prior art keywords
pump
stub pipe
pressure
household appliances
emptying device
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
EP89106861A
Other languages
German (de)
English (en)
Other versions
EP0338484A2 (fr
EP0338484A3 (en
Inventor
Hans Haverkamp
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.)
Hanning Elektro Werke GmbH and Co KG
Original Assignee
Hanning Elektro Werke GmbH and Co KG
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 Hanning Elektro Werke GmbH and Co KG filed Critical Hanning Elektro Werke GmbH and Co KG
Publication of EP0338484A2 publication Critical patent/EP0338484A2/fr
Publication of EP0338484A3 publication Critical patent/EP0338484A3/de
Application granted granted Critical
Publication of EP0338484B1 publication Critical patent/EP0338484B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Definitions

  • the invention relates to a device for emptying a liquid collecting container of water-bearing domestic appliances, consisting of a centrifugal pump with a pump housing surrounding a pump wheel, which has an axial suction nozzle and a radial pressure nozzle, of which the suction nozzle is connected to the liquid collecting container, and the pressure nozzle for discharging the Liquid conveyed by the centrifugal pump is used, with a return flow channel emerging from the area of the pressure port leading into the area of the intake port.
  • centrifugal pumps used in such devices consistently of low-performance pumps, which are usually driven by shaded-pole motors and whose structure must be insensitive to dirt, fluff, impurities and foreign bodies. Since the general efforts now also for household appliances to offer machines that are as quiet as possible, the drain pump has been included in this process of noise reduction. Through refined storage technology and the electrical and magnetic motor design, it has now been possible to build the pumps in question so quietly that they have the desired running behavior during the normal pumping process.
  • noise condition known as "snorkeling" is still a hindrance, which only arises after the liquid collecting container has been emptied. This periodically occurring noise is louder than the other machine noises and, above all, very unpleasant because it alternately swells and swells, which is perceived as particularly annoying.
  • the open gap formed by the invention compared to the prior art as a return flow channel in the pump housing prevents the debris contained in the conveyed liquid from becoming stuck, so that the noise-reducing effect of the return flow channel is always maintained as a result of this novel construction. Furthermore, the inclusion of the return flow channel in the pump housing makes it possible to simplify production considerably.
  • centrifugal pump 3 has a liquid collecting container 2, for the emptying of which is required at regular intervals, a centrifugal pump 3 is provided.
  • This centrifugal pump 3 has a pump housing 4, which surrounds a pump wheel 6, which is overhung and is driven by an electric motor 5.
  • the axial suction port 7 of the pump housing 4 is connected to the liquid collecting container 2 via a first hose section 8, and the radial pressure connection 9 is fitted with a second hose section 10 for removing the liquid conveyed by the centrifugal pump 3.
  • a return flow channel 11 designed as a hose section with a smaller cross-section leads from the hose section 10 placed thereon into the area of the intake connection 7, in order to flow there into the hose section 8 connected to the liquid collecting container 2.
  • This backflow channel 11, which runs from the pressure port 9 to the intake port 7, causes a liquid circuit in the pump housing due to the pressure difference between the intake port 7 and the pressure port 9 4 results, which eliminates the causes of noise in the centrifugal pump 3.
  • FIG. 2 An embodiment of the return flow channel 11 there, modified in accordance with the invention in FIG. 1, is shown in FIG. 2, where it is molded into the pump housing 4 as a gap 12 which is open towards the pump wheel 6. This not only considerably simplifies production, but the gap 12 which is open towards the pump wheel 6 can also be less easily clogged with dirt particles, which is particularly important for the drainage pumps of washing machines or dishwashers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (1)

  1. Dispositif pour vidanger un récipient recevant des liquides provenant d'appareils ménagers (1) utilisant de l'eau, constitué par une pompe centrifuge (3) comportant un carter (4) entourant une roue de pompe (6), et présentant un raccord axial d'aspiration (7) ainsi qu'un raccord radial côté pression (9), le raccord radial d'aspiration (7) étant relié avec le récipient de réception des liquides (2) et le raccord côté pression (9) servant à l'évacuation du liquide refoulé par la pompe centrifuge (3), étant entendu qu'un canal de retour part de la zone du raccord côté pression (9) pour arriver dans la zone du raccord d'aspiration (7), caractérisé en ce que le canal de retour, partant respectivement du raccord côté pression (9) et de la zone annulaire côté pression de la roue de la pompe, est intégré par sa forme dans le carter (4) de la pompe, sous la forme d'une fente (12) ouverte vers le côté roue de la pompe (6).
EP89106861A 1988-04-20 1989-04-17 Dispositif de vidange d'accumulateur de liquide pour appareils ménagers à circulation d'eau Expired - Lifetime EP0338484B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8805234U 1988-04-20
DE8805234 1988-04-20

Publications (3)

Publication Number Publication Date
EP0338484A2 EP0338484A2 (fr) 1989-10-25
EP0338484A3 EP0338484A3 (en) 1990-04-04
EP0338484B1 true EP0338484B1 (fr) 1992-12-16

Family

ID=6823170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106861A Expired - Lifetime EP0338484B1 (fr) 1988-04-20 1989-04-17 Dispositif de vidange d'accumulateur de liquide pour appareils ménagers à circulation d'eau

Country Status (3)

Country Link
US (1) US4964783A (fr)
EP (1) EP0338484B1 (fr)
DE (2) DE58902991D1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034927A1 (de) * 1990-11-02 1992-05-07 Miele & Cie Vorrichtung zum entleeren eines fluessigkeitsauffangbehaelters
US5143513A (en) * 1990-11-14 1992-09-01 Maytag Corporation Dishwasher pump
DE4128689A1 (de) * 1991-08-29 1993-03-04 Miele & Cie Abpumpvorrichtung fuer die kondensationseinrichtung eines waeschetrockners
JP2002506174A (ja) * 1998-03-13 2002-02-26 ユニテック インスティテュート オブ テクノロジー 改良されたポンプ装置並びに方法
DE69922946T2 (de) * 1999-02-08 2005-12-08 Arcelik A.S., Tuzla Waschmaschine mit unterdrückung des lärms der entleerungspumpe
NZ336855A (en) * 1999-07-21 2002-03-01 Unitec Inst Of Technology Multi-phase flow pump with vanes having large spaces there between
NL1022785C2 (nl) * 2003-02-26 2004-08-30 Tendris Solutions Bv Pomp of turbine, aandrijving die een dergelijke pomp of turbine omvat en buitenboordmotor.
ATE403805T1 (de) * 2005-09-23 2008-08-15 Coprecitec Sl Entleerungspumpe eines haushaltsgerätes
EP1887126A1 (fr) * 2006-08-07 2008-02-13 Electrolux Home Products Corporation N.V. Pompe à eau entraînée par un moteur électrique pour une machine à laver
DE102012215626A1 (de) * 2012-09-04 2014-05-28 Bayerische Motoren Werke Aktiengesellschaft Schiebedachentwässerung für ein Kraftfahrzeug
WO2015037669A1 (fr) 2013-09-12 2015-03-19 株式会社 荏原製作所 Dispositif et procédé pour atténuer et empêcher des surpressions de cavitation de système de conduite d'alimentation en eau
US10513343B2 (en) * 2015-08-03 2019-12-24 Parker-Hannifin Corporation Integral pump pressure relief valve
DE102016216737B4 (de) 2016-09-05 2018-03-15 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114329C (fr) *
BE386373A (fr) * 1932-01-11 1932-03-31 Acec
US2400434A (en) * 1944-06-07 1946-05-14 Arthur J Nelson Self-priming centrifugal pump
FR1009734A (fr) * 1948-06-21 1952-06-03 Installation de pompage
FR1101771A (fr) * 1954-03-24 1955-10-11 Perfectionnements aux pompes centrifuges
US2874642A (en) * 1955-10-05 1959-02-24 Allis Chalmers Mfg Co Adjustable bypass valve
FR1135191A (fr) * 1955-11-10 1957-04-25 Roux Ets Installation pour l'amorçage d'une pompe centrifuge
GB997863A (en) * 1962-07-24 1965-07-07 B S A Harford Pumps Ltd Improvements relating to centrifugal pumps
GB1006365A (en) * 1962-10-15 1965-09-29 English Electric Co Ltd Improvements in or relating to hydraulic pumps and reversible pump turbines
US3730646A (en) * 1971-05-04 1973-05-01 A Affri Fluid propelling system

Also Published As

Publication number Publication date
DE8904866U1 (de) 1989-07-27
EP0338484A2 (fr) 1989-10-25
EP0338484A3 (en) 1990-04-04
US4964783A (en) 1990-10-23
DE58902991D1 (de) 1993-01-28

Similar Documents

Publication Publication Date Title
EP0338484B1 (fr) Dispositif de vidange d'accumulateur de liquide pour appareils ménagers à circulation d'eau
DE3781517T2 (de) Pumpe, insbesondere fuer geschirrspuelmaschinen.
EP2188532B1 (fr) Roue à aubes de pompe et pompe comprenant une telle roue à aubes de pompe
DE1403836B1 (de) Ventillose Zweiwegezentrifugalpumpe
DE2022270A1 (de) Waschmaschine,insbesondere Geschirrspuelmaschine
DE69922946T2 (de) Waschmaschine mit unterdrückung des lärms der entleerungspumpe
DE102019117652A1 (de) Waschmaschine mit Hydrozyklon und Verfahren zu deren Betrieb
DE19828871B4 (de) Geschirrspülmaschine
EP0601220B1 (fr) Système de pompe hydraulique, en particulier pompe de vidage de liquides
DE2449262C3 (de) Verfahren und Vorrichtung zum Zerkleinern von WC-Abfällen
EP3545812B1 (fr) Lave-vaiselle, en particulier lave-vaiselle pour le ménage
EP3733040A1 (fr) Appareil électroménager à circulation d'eau
DE3441023A1 (de) Kreiselpumpe fuer eine geschirrspuelmaschine
DE2714376C3 (de) Kreiselpumpe mit offenem Laufrad
DE2947941A1 (de) Waschmaschine mit verbesserter entleerungseinrichtung
EP3757273B1 (fr) Dispositif de traitement du linge comprenant une pompe et le procédé pour son fonctionnement
DE3743709A1 (de) Entleerungspumpe, insbesondere fuer wasch- und geschirrspuelmaschinen
DE69107330T2 (de) Geräuscharme Kreiselmotorpumpe für Flüssigkeiten.
DE4341215A1 (de) Kreiselpumpe, insbesondere zur Verwendung als Umwälzpumpe für Geschirrspülmaschinen und Waschmaschinen
DE1904615U (de) Geschirrspuelmaschine mit umwaelz- und abwasserpumpe.
DE8710567U1 (de) Strömungspumpe mit einer in einem Pumpengehäuse ausgebildeten Pumpenkammer
EP2372164A2 (fr) Machine à laver
DE8316650U1 (de) Entleerungspumpe fuer wasch- und geschirrspuelmaschinen oder aehnliche geraete
DE10318862A1 (de) Wasserführendes Haushaltgerät mit einer Entleerungspumpe sowie Entleerungspumpe
DE922462C (de) Einrichtung zur Umwaelzung von Fluessigkeiten, insbesondere fuer Waschmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR IT SE

17P Request for examination filed

Effective date: 19900904

17Q First examination report despatched

Effective date: 19911115

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19921216

Ref country code: FR

Effective date: 19921216

Ref country code: SE

Effective date: 19921216

REF Corresponds to:

Ref document number: 58902991

Country of ref document: DE

Date of ref document: 19930128

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940101