EP1576291A1 - 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

Info

Publication number
EP1576291A1
EP1576291A1 EP03767672A EP03767672A EP1576291A1 EP 1576291 A1 EP1576291 A1 EP 1576291A1 EP 03767672 A EP03767672 A EP 03767672A EP 03767672 A EP03767672 A EP 03767672A EP 1576291 A1 EP1576291 A1 EP 1576291A1
Authority
EP
European Patent Office
Prior art keywords
pump
water
liquid
pump impeller
separate chamber
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
EP03767672A
Other languages
German (de)
English (en)
Other versions
EP1576291B1 (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 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
Priority claimed from DE10318862A external-priority patent/DE10318862B4/de
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens 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

Links

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-carrying household appliance with a drain pump, which has a pump impeller, with the aid of which liquid is conveyed, and to a drain pump with a pump impeller.
  • a drain pump In the case of water-bearing household appliances such as dishwashers or washing machines, a drain pump is used to pump out dirty cleaning liquid. At the end of a draining process, air gets into the pump housing. This sucked-in air concentrates due to the pressure conditions in the center of the rotating pump impeller and leads to a tearing or reduced flow. Trailing amounts of liquid are therefore no longer pumped out or delayed by the drain pump. Each drain pump shows these problems, which lead to malfunctions or other complex or disadvantageous measures.
  • a ventilation device for a drain pump in dishwashers is known from German utility model 94 06 463 U1, which has a ventilation opening on the suction side for the outflow of the air enclosed in the center of the drain pump. This ensures that malfunctions when restarting the drain pump are avoided.
  • the invention is based on the object of providing a water-conducting domestic appliance of the type described, in which the conveyance of air and liquid and the pumping capacity of the drainage pump are improved, and also to provide a corresponding drainage pump.
  • the drain pump according to the subject of the invention has a separate chamber, which is arranged behind the pump impeller in relation to the direction of the pumped liquid and radially on its outer diameter as well as holes in the vicinity of their inner diameter.
  • the separate chamber advantageously creates a liquid flow from the outside diameter to the inside diameter and then into the center of the pump impeller, as a result of which the air is more swirled with the liquid and the resulting mixture is pumped out more effectively.
  • the pumping capacity and the suction behavior of the drain pump improve, in particular also without external expenditure and without carry-over 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 drainage pump can be further improved from the outside diameter to the inside diameter of the separate chamber and from there to the center of the pump impeller for the mixing of liquid with air.
  • bores are provided for the outside diameter and inside diameter.
  • the bores for the outer diameter and inner diameter are preferably each distributed uniformly on the separate chamber. Both measures have a positive influence on the liquid flow in relation to the flow circuit of the drain pump.
  • a further embodiment of the invention has proven to be of particular value, according to which the bores have a small cross section.
  • a water-carrying household appliance with a drain pump which has a pump impeller with the aid of which liquid is conveyed, is created at which improve the conveyance of air and liquid and the pumping capacity of the drain pump and also provide a corresponding drain pump with a pump impeller.
  • Figure 1 is a drain pump of a water-bearing household appliance according to the invention.
  • Figure 2 shows a section of the chamber belonging to the drain pump with an exemplary arrangement of the holes.
  • FIG. 1 shows an emptying pump 1 according to the invention of a water-carrying household appliance according to the invention, not shown in more detail, typically a dishwasher or a washing machine, which has a pump housing 2 with a pump impeller 3.
  • a motor housing 5 with the drive motor for the pump impeller 3, which can be set in rotation with, for example, straight wheel blades, is also located in the direction of the axis of the pump impeller 3 and is molded onto the pump housing 2 on the other side.
  • the drain pump 1 has an outlet port 10, which is arranged radially with respect to the axis of the pump impeller 3.
  • the water-carrying household appliance has a drain pump 1 with a separate chamber 6, which is arranged behind the pump impeller 3 in relation to the direction of the liquid conveyed - ie the axis of the pump impeller 3 - and radially on its outside diameter 11 and in the vicinity of their inner diameter 12 each with bores T 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, as a result of which the air is better mixed with the liquid swirls and the resulting mixture 8 is pumped out more effectively.
  • the pump performance and the suction behavior of the drain pump 1 improve, in particular also without external expenditure and without carryover of the conveying medium caused by ventilation openings or ventilation channels in the pump housing 2.
  • the separate chamber 6 is advantageously arranged as close as possible to the pump impeller 3, as a result of which the liquid flow in the flow circuit - see arrows - of 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 improve even further.
  • a plurality of bores 7 ′, 7 ′′ are provided for the outer diameter 11 and inner diameter 12 and are preferably distributed evenly on the separate chamber 6. Both measures have a positive influence on the flow of liquid - see arrows - with regard to the flow circuit of the drainage pump 1.
  • FIG. 2 shows a section of the separate chamber 6 belonging to the drainage pump with an exemplary arrangement of the bores.
  • a bore 7 ′ on the outer diameter 11 of the chamber 6, while another bore 7 ′′ is arranged in the vicinity of the inner diameter 12 of the chamber 6.
  • the chamber 6 has radial both on its outer diameter 11 and on its inner diameter 11 each have four evenly distributed bores 7 'and 7 ".
  • the arrows show the course of the liquid flow from the outer diameter 11 with bore 7 ', at which a higher pressure is present, to the inner diameter 12 with bore 7' ', at which there is a lower pressure, and from there to the center of the pump impeller. It has been of particular value proven, if the holes are dimensioned with a small cross-section, all holes have a diameter of 3.5 mm, for example.
  • a water-carrying household appliance with a drain pump 1, which has a pump impeller 3 with which liquid is conveyed, is created, in which the conveyance of air and liquid and the pumping capacity of the drain pump 1 are improved, and furthermore a corresponding drain pump 1 with a Pump impeller 3 provided.

Landscapes

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

Abstract

L'invention concerne un appareil ménager à eau comprenant une pompe d'évacuation (1) dotée d'une roue mobile (3) ainsi qu'une pompe d'évacuation (1) dotée d'une roue mobile (3). La pompe d'évacuation (1) selon l'invention comporte une cavité (6) spéciale, disposée derrière la roue mobile (3) relativement au sens d'écoulement du liquide, et dotée d'orifices (7', 7'') à disposition radiale sur le diamètre extérieur (11) ainsi qu'à proximité du diamètre intérieur (12) de la cavité. Cette cavité spéciale permet au liquide de s'écouler du diamètre extérieur vers le diamètre intérieur puis dans le centre de la roue mobile de la pompe, le tourbillonnement de l'air avec le liquide étant amélioré et le pompage du mélange obtenu plus efficace. La puissance de pompage et l'aspiration de la pompe d'évacuation sont ainsi améliorées sans apport externe et sans que le liquide refoulé soit entraîné par des prises d'air ou par des canaux de purge d'air dans le carter de la pompe.
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
DE10318862A DE10318862B4 (de) 2002-12-18 2003-04-25 Wasserführendes Haushaltgerät mit einer Entleerungspumpe sowie Entleerungspumpe
DE10318862 2003-04-25
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 true EP1576291A1 (fr) 2005-09-21
EP1576291B1 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
DE3670347D1 (de) * 1985-12-24 1990-05-17 Holset Engineering Co Kompressoren.
US5257901A (en) * 1990-12-28 1993-11-02 Whirlpool Corporation Quick-priming centrifugal pump
DE9406463U1 (de) 1994-04-19 1994-06-16 Bosch-Siemens Hausgeräte GmbH, 81669 München 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004055373A1 *

Also Published As

Publication number Publication date
US7597110B2 (en) 2009-10-06
US20060147327A1 (en) 2006-07-06
WO2004055373A1 (fr) 2004-07-01
EP1576291B1 (fr) 2016-08-31
AU2003292128A1 (en) 2004-07-09

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