EP1126180A2 - Roue d'une pompe centrifuge pour lave-vaisselle - Google Patents

Roue d'une pompe centrifuge pour lave-vaisselle Download PDF

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Publication number
EP1126180A2
EP1126180A2 EP00126832A EP00126832A EP1126180A2 EP 1126180 A2 EP1126180 A2 EP 1126180A2 EP 00126832 A EP00126832 A EP 00126832A EP 00126832 A EP00126832 A EP 00126832A EP 1126180 A2 EP1126180 A2 EP 1126180A2
Authority
EP
European Patent Office
Prior art keywords
impeller
pump
blade cover
blade
cover
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
EP00126832A
Other languages
German (de)
English (en)
Other versions
EP1126180A3 (fr
EP1126180B1 (fr
Inventor
Walter Assmann
Hans Joachim Hegemann
Ulrich Hettenhausen
Peter Dr. Rode
Hermann-Josef Theis
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.)
Miele und Cie KG
Original Assignee
Miele und Cie 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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1126180A2 publication Critical patent/EP1126180A2/fr
Publication of EP1126180A3 publication Critical patent/EP1126180A3/fr
Application granted granted Critical
Publication of EP1126180B1 publication Critical patent/EP1126180B1/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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly

Definitions

  • the object of the invention relates to a pump impeller for a centrifugal pump, in particular for a circulation pump which can be used in dishwashers or washing machines, which rotates in a pump housing with suction and pressure ports and formed with a plurality of moving blades and with a counter bearing ring of a mechanical seal is, the blades from the wheel hub to the wheel circumference of the wheel extend radially and on an upstream front blade cover and / or pump housing-side rear blade cover are arranged.
  • centrifugal pumps of radial design for water-bearing household appliances especially for Dishwashers known whose impellers on the pump housing side or on the inflow side, are open at the back or front. Closed impellers are also known, see FIG. for example DE 198 01 112 A1, in which the rear impeller cover completely removes the blades and the front cover of the blades except for the inlet cross-section covers.
  • the open impellers have the advantage that they are easier to manufacture. If necessary, the blade channels of the open impellers can also be subsequently machined well or also clearly visible for inspection purposes. In contrast, the open impellers compared to the closed impellers due to a poorer hydraulic Efficiency because of pressure differences between the front of the blade and The back of the blade causes considerable gap losses.
  • the invention has for its object to provide a pump impeller that is simple as well is inexpensive to manufacture, stable pump performance even with axial position tolerances distinguishes, and eliminates annoying running noises and ventilation problems are.
  • a pump impeller designated by (1) in Fig. 1 for a known and not shown Centrifugal pump, in particular for one in dishwashers or washing machines Circulation pump that can be used is, according to the invention, a semi-open impeller at the front and rear educated.
  • Such an impeller (1) can be installed in a pump housing provided with suction and pressure ports, as shown in DE 198 01 112 A1, for example.
  • the Pump shaft sealing in a manner known per se by means of a mechanical seal from a rubber sleeve arranged in the motor-side end shield of the pump housing with a fixed sliding ring made of sintered carbon material or the like and a counter bearing ring (2) made of ceramic material on the impeller (1).
  • the slide ring is supported under spring pressure the sealing surface of the ceramic counter bearing ring (2) perpendicular to the shaft.
  • the impeller (1) (Fig. 1 to 3) is provided with several blades (3), which are different from the Extend the impeller hub (4) radially towards the outer circumference of the impeller and between the blade covers (5, 6) of the impeller (1) are arranged.
  • the impeller (1) with the blade covers (5, 6) according to the invention is made in one piece, preferably in one piece, the initially mentioned semi-open construction is selected. According to this design, they cover both sides of the rotor blades (3) provided for the rotor blade covers (5, 6) (3) front and back only partially.
  • the one-piece impeller (1) is designed as an injection molded part, the ceramic counter bearing ring (2) is preferably cast in. According to the embodiment shown (see. in particular Fig. 2) is the ceramic counter bearing ring (2) with one in the impeller material immersed gradation (7) and positively and / or non-positively fixed in the impeller (1).
  • the step (7) is encapsulated by the impeller material.
  • the blades (3) end on the front blade cover (5) and covered by this in the upper area on a Blade outer circle diameter (A'-5).
  • the blade outer circle diameter (A'-5) is preferred smaller than the outer diameter (A-5) of the annular front blade cover (5) selected.
  • the outer diameter (A-6) of the rear blade cover (6) or the approximately equal inner diameter (1-5) of the front blade cover (5) lies approximately in the middle between the outer diameter (A-5) of the front blade cover (5) and the blade inner circle diameter (I'-6) the rear cover (6). This makes demoulding a two-part injection mold easy possible.
  • the impeller (1) promotes water / air mixtures or foam compared to known impellers with less annoying noise, d. H. relatively quiet. This is achieved due to the large bladed wheel hub, because this causes air bubbles to be drawn in on the upstream side do not shoot straight onto the rear bucket cover and make noises in the event of an impact generate, but in the area of the impeller hub (4) deflected by the blades (3) and be crushed by the blades. This process takes place inside the impeller (1) instead and is largely acoustically decoupled.
  • the half-open impeller (1) also advantageously vented, as compared to closed ones
  • Impellers are the volumes of the blade-free annular gap spaces between the impeller hub (4) and the pump housing or the front impeller cover (5) and the pump housing is reduced to less than half. By reducing the size of the annular gap spaces This means that less air accumulates, so that the pump is vented less is disabled.
  • the impeller (1) can be made in one piece because the outer diameter (A-6) of the rear impeller cover (6) equal to or slightly less than the inside diameter (l-5) of the front cover (5) is. If the mating ring bearing ceramic (2) is inserted into the impeller injection tool, this eliminates the need to mount the bearing separately.
  • the complete impeller (1) can be in one Work step.
  • the directly overmolded bearing ceramic also reduces the number of components achieved because a sealing sleeve and a brass bushing to be used separately can be omitted for the reception of the ceramic disc. Direct injection of the ceramic counter bearing ring (2) can of course also be used in a multi-part impeller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP00126832A 2000-02-16 2000-12-07 Roue d'une pompe centrifuge pour lave-vaisselle Expired - Lifetime EP1126180B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10006983 2000-02-16
DE10006983A DE10006983A1 (de) 2000-02-16 2000-02-16 Pumpenlaufrad für eine Kreiselpumpe, insbesondere für eine in Geschirrspülmaschinen oder Waschmaschinen einsetzbare Umwälzpumpe

Publications (3)

Publication Number Publication Date
EP1126180A2 true EP1126180A2 (fr) 2001-08-22
EP1126180A3 EP1126180A3 (fr) 2002-08-14
EP1126180B1 EP1126180B1 (fr) 2005-03-02

Family

ID=7631148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126832A Expired - Lifetime EP1126180B1 (fr) 2000-02-16 2000-12-07 Roue d'une pompe centrifuge pour lave-vaisselle

Country Status (4)

Country Link
EP (1) EP1126180B1 (fr)
AT (1) ATE290169T1 (fr)
DE (2) DE10006983A1 (fr)
ES (1) ES2234504T3 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004015274A3 (fr) * 2002-08-13 2004-07-01 Litens Automotive Combinaison de moteur a combustion interne avec une pompe de refroidissement a entrainement direct par arbre a came
US7047914B2 (en) 2001-02-15 2006-05-23 Litens Automotive Internal combustion engine combination with direct camshaft driven coolant pump
WO2011148396A1 (fr) * 2010-05-28 2011-12-01 Coplast Srl Ventilateur de refroidissement pour machine tournante
WO2011148397A1 (fr) * 2010-05-28 2011-12-01 Coplast Srl Ventilateur de refroidissement pour machine tournante
WO2011148398A1 (fr) * 2010-05-28 2011-12-01 Coplast Srl Ventilateur de refroidissement pour machine tournante
ITPD20100386A1 (it) * 2010-12-21 2012-06-22 Unox Spa Ventola perfezionata di ventilatore centrifugo, in particolare destinata a forni di cottura del tipo a convezione e metodo di fabbricazione di detta ventola
CN102562650A (zh) * 2010-12-08 2012-07-11 湖北省天门泵业有限公司 泵类半闭式叶轮
CN104141632A (zh) * 2014-07-25 2014-11-12 吉首长潭泵业有限公司 耐磨合金砂浆泵叶轮及其制造方法
CN105275834A (zh) * 2015-10-27 2016-01-27 上海华鼓鼓风机有限公司 一种低速多级垂直剖分筒型结构的三元流离心鼓风机
US10349809B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
US10349810B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
CN116221149A (zh) * 2023-03-20 2023-06-06 青岛科技大学 一种抑制入口处工质冷凝和扩大稳定运行范围的离心压缩机结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005031589A1 (de) * 2005-07-06 2007-01-11 Schaeffler Kg Wasserpumpenflügelrad
CN116075640A (zh) * 2020-09-14 2023-05-05 株式会社易威奇 叶轮以及具备叶轮的泵

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801112A1 (de) 1997-01-17 1998-07-23 Miele & Cie Gleitringdichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079866A (en) * 1959-07-16 1963-03-05 Texaco Inc Modified centrifugal pump
US3354529A (en) * 1963-07-29 1967-11-28 Ford Motor Co Impeller making
DE3611910A1 (de) * 1986-04-09 1987-10-15 Schaeffler Waelzlager Kg Laufrad fuer eine radialpumpe
DE3706770A1 (de) * 1987-03-03 1988-09-15 Licentia Gmbh Kreiselpumpe, insbesondere fuer geschirrspuelmaschinen
DE3821352C1 (fr) * 1988-06-24 1989-11-02 Goetze Ag, 5093 Burscheid, De
DE19530195A1 (de) * 1995-08-17 1997-02-20 Tuchenhagen Otto Gmbh Kreiselpumpenlaufrad radialer Bauart

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801112A1 (de) 1997-01-17 1998-07-23 Miele & Cie Gleitringdichtung

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7047914B2 (en) 2001-02-15 2006-05-23 Litens Automotive Internal combustion engine combination with direct camshaft driven coolant pump
WO2004015274A3 (fr) * 2002-08-13 2004-07-01 Litens Automotive Combinaison de moteur a combustion interne avec une pompe de refroidissement a entrainement direct par arbre a came
WO2011148396A1 (fr) * 2010-05-28 2011-12-01 Coplast Srl Ventilateur de refroidissement pour machine tournante
WO2011148397A1 (fr) * 2010-05-28 2011-12-01 Coplast Srl Ventilateur de refroidissement pour machine tournante
WO2011148398A1 (fr) * 2010-05-28 2011-12-01 Coplast Srl Ventilateur de refroidissement pour machine tournante
CN102562650A (zh) * 2010-12-08 2012-07-11 湖北省天门泵业有限公司 泵类半闭式叶轮
ITPD20100386A1 (it) * 2010-12-21 2012-06-22 Unox Spa Ventola perfezionata di ventilatore centrifugo, in particolare destinata a forni di cottura del tipo a convezione e metodo di fabbricazione di detta ventola
CN104141632A (zh) * 2014-07-25 2014-11-12 吉首长潭泵业有限公司 耐磨合金砂浆泵叶轮及其制造方法
CN105275834A (zh) * 2015-10-27 2016-01-27 上海华鼓鼓风机有限公司 一种低速多级垂直剖分筒型结构的三元流离心鼓风机
US10349809B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
US10349810B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
CN116221149A (zh) * 2023-03-20 2023-06-06 青岛科技大学 一种抑制入口处工质冷凝和扩大稳定运行范围的离心压缩机结构

Also Published As

Publication number Publication date
ATE290169T1 (de) 2005-03-15
DE50009642D1 (de) 2005-04-07
EP1126180A3 (fr) 2002-08-14
EP1126180B1 (fr) 2005-03-02
DE10006983A1 (de) 2001-08-23
ES2234504T3 (es) 2005-07-01

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