EP1576291B1 - Appareil menager a eau comprenant une pompe d'evacuation et pompe d'evacuation - Google Patents

Appareil menager a eau comprenant une pompe d'evacuation et pompe d'evacuation Download PDF

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Publication number
EP1576291B1
EP1576291B1 EP03767672.3A EP03767672A EP1576291B1 EP 1576291 B1 EP1576291 B1 EP 1576291B1 EP 03767672 A EP03767672 A EP 03767672A EP 1576291 B1 EP1576291 B1 EP 1576291B1
Authority
EP
European Patent Office
Prior art keywords
pump
drainage pump
water
domestic appliance
bearing domestic
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
EP03767672.3A
Other languages
German (de)
English (en)
Other versions
EP1576291A1 (fr
Inventor
Roland Ertle
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 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
Priority claimed from DE10318862A external-priority patent/DE10318862B4/de
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP1576291A1 publication Critical patent/EP1576291A1/fr
Application granted granted Critical
Publication of EP1576291B1 publication Critical patent/EP1576291B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump

Definitions

  • the invention relates to a water-conducting household appliance with a drain pump, which has a pump impeller, by means of which the liquid is conveyed and a drain pump with a pump impeller.
  • a drain pump for pumping spent cleaning fluid and thus to avoid clogging caused by dirt particles, Grobanschmutz Heidelberg etc.
  • the drainage pump allows the pumping of some coarser dirt particles through a pump impeller, promoted in the liquid and air can be sucked.
  • the air is sucked to the pump impeller and remains in the drain pump.
  • this air is forced into the center of the pump impeller and prevents or prevents the inflow of liquid in the axial inflow direction.
  • Each drain pump has problems draining this intake air because the air in the impeller is trapped due to centrifugal forces. This all means that the delivery rate is not very high and that the fate of air bubbles leads to losses in the already low pumping power.
  • German Utility Model 94 06 463 U1 a venting device for a drain pump for dishwashers is known, which has a vent on the suction side to flow out of the trapped in the center of the drainage pump air. This ensures that malfunctions when restarting the drain pump are avoided.
  • a circulation pump and self-priming wastewater pump with a common drive motor is known, which are arranged in a dishwasher above the lowest point of the water sump.
  • a connection path for the air pressure equalization is provided between the interior of the circulating pump and the sewage pump.
  • the invention is based on the object to provide a water-conducting household appliance of the type described, in which the promotion of air and liquid and the pumping capacity of the drain pump are improved as well as to provide a corresponding drain pump available.
  • the drain pump Starting from a water-conducting household appliance with a drain pump having a pump impeller and a drain pump with pump impeller, the drain pump according to the subject invention has a separate chamber, which arranged relative to the direction of the conveyed liquid behind the impeller and radially on its outer diameter and in the vicinity of its inner diameter is provided in each case with holes.
  • the separate chamber advantageously creates a fluid flow from the outer diameter to the inner diameter and then into the center of the pump impeller, whereby the air is better swirled with the liquid and the resulting mixture is pumped out more effectively.
  • the pumping capacity and the suction behavior of the drainage pump improve, in particular even without external expenditure and without carryover of the pumped medium caused by ventilation openings or ventilation channels in the pump housing.
  • the separate chamber is arranged as close as possible to the pump impeller.
  • the liquid flow in the flow circuit of the drain pump from the outer diameter to the inner diameter of the separate chamber and from there to the center of the pump impeller for the mixing of liquid with air can be further improved.
  • a plurality of holes for outer diameter and inner diameter are provided.
  • the holes for outer diameter and inner diameter are each uniformly distributed to the separate chamber. Both measures positively influence the liquid flow in relation to the drainage circuit of the drainage pump.
  • a water-conducting household appliance with a drain pump which has a pump impeller, with the aid of which liquid is conveyed created, at the promotion of air and liquid and the pumping capacity of the drain pump are improved, and further provided a corresponding drain pump with a pump impeller available.
  • FIG. 1 shows an emptying pump 1 according to the invention of a non-illustrated water-conducting household appliance according to the invention, typically a dishwasher or a washing machine having a pump housing 2 with a pump impeller 3.
  • An inlet nozzle 4 through the liquid - for example, water - promoted in the impeller 3 or air can be sucked, extending in the direction of the axis of the pump impeller 3 and is formed on the input side of the pump housing 2.
  • a motor housing 5 with the drive motor for the pump impeller 3, which can be set in rotation with, for example, straight vanes, is also located in the direction of the axis of the pump impeller 3 and is integrally formed on the other side to the pump housing 2.
  • the drain pump 1 has an outlet nozzle 10, which is arranged radially with respect to the axis of the pump impeller 3.
  • the water-bearing domestic appliance has an emptying pump 1 with a separate chamber 6 which, relative to the direction of the conveyed liquid - ie the axis of the pump impeller 3 - is arranged behind the pump impeller 3 and radially on its outer diameter 11 and in the vicinity their inner diameter 12 are each provided with bores 7 'and 7 ".
  • the separate chamber 6 advantageously creates a liquid flow - recognizable by the arrows in FIG. 1 - From the outer diameter 11 to the inner diameter 12 and then into the center 9 of the pump impeller 3, whereby the air swirled better with the liquid and the resulting mixture 8 is pumped out more effectively.
  • the pumping power and the intake behavior of the drainage pump 1 improve, in particular without external expenditures and without carryover of the pumped medium caused by ventilation openings or venting channels in the pump housing 2.
  • the separate chamber 6 is arranged as close to the pump impeller 3, whereby the liquid flow in the flow circuit - see arrows - the drain pump 1 from the outer diameter 11 to the inner diameter 12 of the separate chamber 6 and from there to the center 9 of the pump impeller 3 for mixing of liquid with air even further.
  • FIG. 2 shows for clarity a section of belonging to the drain pump separate chamber 6 with an exemplary arrangement of the holes.
  • a bore 7 ' is located on the outer diameter 11 of the chamber 6, while another bore 7 "is disposed in the vicinity of the inner diameter 12 of the chamber 6.
  • the chamber 6 has radially both on its outer diameter 11 and on its inner diameter 11 respectively four evenly spaced holes 7 'and 7 "on.
  • the arrows show the course of the fluid flow from the outer diameter 11 with bore 7 ', at which there is a higher pressure, to the inner diameter 12 with bore 7 ", at which a lower pressure prevails, and from there to the center of the pump impeller proven, if the holes are dimensioned with a small cross-section, all holes have, for example, each 3.5 mm in diameter.
  • a water-bearing domestic appliance with a drain pump 1, which has a pump impeller 3, is promoted with the liquid created in which the promotion of air and liquid and the pumping capacity of the drain pump 1 are improved and also a corresponding drain pump 1 with a Pump impeller 3 provided.

Claims (14)

  1. Appareil ménager à circulation d'eau comprenant une pompe de vidange selon la revendication 8.
  2. Appareil ménager à circulation d'eau selon la revendication 1, caractérisé en ce que la chambre séparée (6) est disposée le plus près possible de la roue de pompe (3).
  3. Appareil ménager à circulation d'eau selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs alésages (7', 7") pour diamètre extérieur (11) et diamètre intérieur (12) sont ménagés.
  4. Appareil ménager à circulation d'eau selon l'une quelconque des revendications précédentes, caractérisé en ce que les alésages (7', 7") pour diamètre extérieur (11) et diamètre intérieur (12) sont respectivement placés sur la chambre séparée (6) en étant répartis de manière régulière.
  5. Appareil ménager à circulation d'eau selon l'une quelconque des revendications précédentes, caractérisé en ce que les alésages (7', 7") présentent une petite section transversale.
  6. Appareil ménager à circulation d'eau selon l'une quelconque des revendications précédentes, destiné à être utilisé dans un lave-vaisselle.
  7. Appareil ménager à circulation d'eau selon l'une quelconque des revendications 1 à 5, destiné à être utilisé dans un lave-linge.
  8. Pompe de vidange comprenant une roue de pompe à l'aide de laquelle du liquide est refoulé, la pompe de vidange (1) présentant une chambre séparée (6) qui, par rapport au sens du liquide transporté, est disposée derrière la roue de pompe (3), caractérisée en ce que la chambre (6) est respectivement munie d'alésages (7', 7") radialement sur son diamètre extérieur (11) ainsi qu'à proximité de son diamètre intérieur (12).
  9. Pompe de vidange selon la revendication 8, caractérisée en ce que la chambre séparée (6) est disposée le plus près possible de la roue de pompe (3).
  10. Pompe de vidange selon la revendication 8 ou 9, caractérisée en ce que plusieurs alésages (7', 7") pour diamètre extérieur (11) et diamètre intérieur (12) sont ménagés.
  11. Pompe de vidange selon l'une quelconque des revendications 8 à 10, caractérisée en ce que les alésages (7', 7") pour diamètre extérieur (11) et diamètre intérieur (12) sont respectivement placés sur la chambre séparée (6) en étant répartis de manière régulière.
  12. Pompe de vidange selon l'une quelconque des revendications 8 à 11, caractérisée en ce que les alésages (7', 7") présentent une petite section transversale.
  13. Pompe de vidange selon l'une quelconque des revendications 8 à 12, caractérisée en ce que la pompe de vidange (1) est utilisée dans un lave-vaisselle.
  14. Pompe de vidange selon l'une quelconque des revendications 8 à 12, caractérisée en ce que la pompe de vidange (1) est utilisée dans un lave-linge.
EP03767672.3A 2002-12-18 2003-11-26 Appareil menager a eau comprenant une pompe d'evacuation et pompe d'evacuation Expired - Lifetime EP1576291B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10259347 2002-12-18
DE10259347 2002-12-18
DE10318862 2003-04-25
DE10318862A DE10318862B4 (de) 2002-12-18 2003-04-25 Wasserführendes Haushaltgerät mit einer Entleerungspumpe sowie Entleerungspumpe
PCT/EP2003/013317 WO2004055373A1 (fr) 2002-12-18 2003-11-26 Appareil menager a eau comprenant une pompe d'evacuation et pompe d'evacuation

Publications (2)

Publication Number Publication Date
EP1576291A1 EP1576291A1 (fr) 2005-09-21
EP1576291B1 true EP1576291B1 (fr) 2016-08-31

Family

ID=32598083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03767672.3A Expired - Lifetime EP1576291B1 (fr) 2002-12-18 2003-11-26 Appareil menager a eau comprenant une pompe d'evacuation et pompe d'evacuation

Country Status (4)

Country Link
US (1) US7597110B2 (fr)
EP (1) EP1576291B1 (fr)
AU (1) AU2003292128A1 (fr)
WO (1) WO2004055373A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008031011A1 (fr) * 2006-09-08 2008-03-13 Cardiomems, Inc. Câble d'antenne
US9840803B2 (en) * 2015-10-20 2017-12-12 Haier Us Appliance Solutions, Inc. Pump assembly for appliance

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306951A (en) * 1939-07-01 1942-12-29 Irving C Jennings Pump
US2680409A (en) * 1950-04-19 1954-06-08 Gen Electric Centrifugal pump
FR1130511A (fr) 1955-08-17 1957-02-06 Lamort E & M Perfectionnements aux pompes centrifuges
US3018650A (en) * 1960-06-15 1962-01-30 Gen Motors Corp Washing machine with drain pump having means to reduce the power requirements of the pump when operating at high speed
DE1653682A1 (de) 1967-12-15 1971-06-24 Bosch Hausgeraete Gmbh Umwaelzpumpe und selbstansaugende Abwasserpumpe
US3707334A (en) * 1971-01-12 1972-12-26 Whirlpool Co Water pump with air lock breaking means
US3702680A (en) * 1971-11-08 1972-11-14 Fedders Corp Gentle wash mechanism for a dishwasher
CA1064193A (fr) * 1974-02-11 1979-10-09 Dwain M. White Procede pour proteger les groupes reactifs de l'oxyde de polyphenylene
DE3412774A1 (de) 1984-04-05 1985-10-17 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Umwaelzpumpe der kreiselpumpenart
EP0229519B2 (fr) * 1985-12-24 1996-11-13 Holset Engineering Company Limited Compresseurs
US5257901A (en) * 1990-12-28 1993-11-02 Whirlpool Corporation Quick-priming centrifugal pump
DE9406463U1 (de) 1994-04-19 1994-06-16 Bosch Siemens Hausgeraete Entlüftungsvorrichtung für nicht selbstansaugende Entleerungspumpen bei Geschirrspülmaschinen
JP3637154B2 (ja) * 1996-07-15 2005-04-13 松下電器産業株式会社 洗濯機等のポンプ装置
JP2000014964A (ja) * 1998-06-30 2000-01-18 Sanyo Electric Co Ltd 全自動洗濯機
JP2000051135A (ja) * 1998-08-06 2000-02-22 Toto Ltd 食器洗浄機のフィルター及び食器洗浄機
JP2001073890A (ja) * 1999-08-31 2001-03-21 Tokyo Roki Co Ltd プリクリーナ

Also Published As

Publication number Publication date
US20060147327A1 (en) 2006-07-06
AU2003292128A1 (en) 2004-07-09
US7597110B2 (en) 2009-10-06
WO2004055373A1 (fr) 2004-07-01
EP1576291A1 (fr) 2005-09-21

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