EP1913262B1 - Corps de pompe, pompe et appareil menager a circulation d'eau - Google Patents

Corps de pompe, pompe et appareil menager a circulation d'eau Download PDF

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Publication number
EP1913262B1
EP1913262B1 EP06792467.0A EP06792467A EP1913262B1 EP 1913262 B1 EP1913262 B1 EP 1913262B1 EP 06792467 A EP06792467 A EP 06792467A EP 1913262 B1 EP1913262 B1 EP 1913262B1
Authority
EP
European Patent Office
Prior art keywords
support arm
pump
pump housing
seat
front edge
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.)
Not-in-force
Application number
EP06792467.0A
Other languages
German (de)
English (en)
Other versions
EP1913262A1 (fr
Inventor
Michal Kalavsky
Karlheinz Rehm
Bruno Reiter
Michael Rosenbauer
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
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL06792467T priority Critical patent/PL1913262T3/pl
Publication of EP1913262A1 publication Critical patent/EP1913262A1/fr
Application granted granted Critical
Publication of EP1913262B1 publication Critical patent/EP1913262B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • 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
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • 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

Definitions

  • the present invention relates to a pump housing, a pump, in particular a pump for water-conducting household appliances, and a water-conducting household appliance.
  • the axis on which the rotor of the drive motor is mounted held at the front end in a seat which is fixed in the intake manifold of the pump housing via support arms.
  • the support arms extend radially, star-shaped around the seat.
  • the star-shaped arrangement is in a flow of contaminated water.
  • impurities such as food scraps, fabric fibers and other particles can get caught on the support arms, which can lead to a blockage of the cross-section of the intake and ultimately to failure of the pump.
  • Object of the present invention is thus to provide a way by which a damming of impurities in a pump housing can be prevented and yet a reliable fixation of the axis of the drive motor of the pump is realized.
  • a pump housing for a pump with a wet-rotor motor which has a seat on the inlet side for the axis of the wet-rotor motor.
  • the Pump housing is characterized in that the seat is attached to the pump housing only via a single support arm, wherein the lower edge of the support arm is arranged parallel to the inner wall of the intake manifold.
  • the inlet side is the part of the pump housing to which the liquid which is to be conveyed via the pump enters into the pump housing.
  • this part of the pump housing is formed by an intake.
  • the axis which is to be accommodated in the seat of the pump housing represents the rotationally fixed to be supported axis of the motor, on which the rotor is mounted.
  • a rib or a connecting web is referred to, via which the seat for the front end of the axle can be attached to the pump housing.
  • the seat is always referred to below as the seat for receiving the front end of the axle. This seat is designed for non-rotatable mounting of the axle bearing.
  • the seat By attaching the seat to the housing by a single support arm, the engagement surface on which contaminants can be trapped is minimized.
  • the danger of damming-up of impurities in the immediate vicinity of the seat is great.
  • the distance between adjacent support arms is low, so that impurities can easily settle in these spaces.
  • the seat is attached only at one end to the housing, in particular the intake manifold of the pump housing.
  • the support arm may extend from the fastened side in the radial direction of the intake manifold at least to the outer radius of the arranged on the central axis of the seat.
  • the pump housing has an intake and the length of the support arm is greater than the radius of the intake.
  • the length is the dimension of the support arm, which is perpendicular to the center line of the intake.
  • the support arm is arranged in the intake manifold, that this extends vertically with horizontal alignment of the housing. In this direction, the greatest forces occur due to the weight of the engine. If the support arm is also in this direction, shear forces can be avoided.
  • the support arm extends in this embodiment from above to the seat. Thus, acting on the support arm only tensile forces and kinking of the support arm, which can occur in a support arm which extends vertically from below to the seat, is avoided.
  • the seat is spaced from the leading edge of the support arm in the flow direction. This means that the front end or the tip of the seat, the front edge of the support arm is not touched or offset from the leading edge in the flow direction to the rear in the direction of the pump chamber. This offset refers to the relative position of the seat to the leading edge on the centerline or centerline of the intake manifold.
  • the front edge of the support arm is the edge of the support arm, which faces the inlet opening of the intake manifold.
  • the main flow direction of the liquid is the direction from the intake port of the intake port to the pump chamber of the pump casing.
  • the leading edge at which the impurities carried along with the liquid flow first come into contact with the support arm, in this case represents a continuous edge and in particular has no jump or step.
  • This interruption of the leading edge is at a displacement of the seat against the main flow direction, that is at a protrusion of the seat before.
  • the leading edge of the support arm is at an angle of less than 90 ° to the central axis of the pump housing.
  • the central axis of the pump housing is the center line on which the axis of the pump motor is located. This preferably corresponds to the center line or central axis of the intake. Due to the angle between the front edge and the central axis of the support arm is inclined in the main flow direction of the liquid. This increases the self-cleaning effect of the support arm. Since only one support arm is provided and this ends preferably in the region of the seat for the axle, the inclined arrangement is a sliding of impurities on the front edge of the support arm and thus a removal of the contaminants to the free cross section in the intake manifold, not by the Support arm is covered, allows.
  • the angle between the front edge of the support arm and the center axis of the seat is preferably less than 70 °. This angle allows for optimal self-cleaning and yet can provide sufficient support for the seat of the axle. Which will be explained later.
  • the rear edge of the support arm is at the same angle as the leading edge.
  • the width of the support arm is thus substantially constant over its length.
  • the support arm is preferably rounded at the front edge in the lower area. This means that a radius is provided at the front lower corner of the support arm. This can further improve the flow conditions and the sliding of the impurities.
  • a recess may be provided in the back of the support arm.
  • the seat and the support arm can be configured in one piece according to the invention. As a result, the production is simplified and also the grip of the seat further improved.
  • the cross section in which the support arm is mounted preferably represents the intake manifold of the pump housing.
  • This arrangement is advantageous because the intake manifold has a smaller diameter than the adjoining pump chamber.
  • To fix the seat on the center line of the pump housing, which corresponds to the center line of the intake manifold is a small length of the support arm sufficient. When mounted in this area, the length of the support arm can be minimized compared to the attachment to the inner wall of the pump chamber.
  • the support arm is inclined in the direction of flow and has an angle of, for example, 70 ° for self-cleaning purposes, a further advantage results from the fastening of this support arm in the intake manifold with the small length of the support arm to be realized there. Even with a relatively small width of the support arm, which is for example only a small amount greater than the length of the seat, it can still be ensured in this position that the seat lies in the axial direction below the attachment to the intake manifold and so there is no lever arm which could lead to kinking or detachment of the support arm of the housing.
  • the invention relates to a pump, in particular a wet-running pump, which comprises the pump housing according to the invention.
  • the present invention relates to a water-conducting domestic appliance which has at least one pump according to the invention. Especially in household appliances, the occurrence of impurities in the liquid to be transported can not be avoided. Water-conducting household appliances in which the pump according to the invention can be advantageously used, for example, a washing machine, a dishwasher or the like.
  • pump 1 is a pump with integrated, electronically commutated wet rotor motor for a household appliance (not shown). These pumps 1 are usually in the in the FIG. 1 shown horizontal alignment installed and operated in the household appliance.
  • the pump housing 2 is composed of a front housing shell 3 and a pot-shaped plate 4, which are both positively connected to each other.
  • the pump housing 2 of the pump 1 thus forms a one-piece pump chamber 5, which comprises in its interior a rotor 6 with an impeller 7.
  • the impeller 6 may be formed integrally with the rotor 6.
  • the rotor 6 is rotatably mounted on an axis 10 by a front, the impeller 7 facing slide bearing 8 and by a rear, the shield 4 facing, slide bearing 9.
  • the axis 10 is at its front, the impeller 6 associated end 11 in a seat 12 which is fixed by a support arm 13 on the front housing shell 3, and at its rear, the shield 4 facing the end 14 in a holder 15 which in the shield 4 is formed rotatably mounted.
  • the front housing shell 3, the in FIG. 2 have schematically shown shape.
  • this includes an axial intake 17, through which the liquid to be transported can enter the pump chamber 5.
  • the pump chamber 5 connects to the tangentially a nozzle 19, in particular a discharge nozzle, is provided for the liquid outlet from the chamber 5.
  • a support arm 13 is attached to the inner wall 18. This extends in a vertical direction from above beyond the central axis M of the intake manifold 17. At the height of the central axis M of the intake manifold 17, the seat 12 for the axle 10 is held in the support arm 13.
  • the support arm 13 has the shape of a rib and the leading edge 22 and trailing edge 23 of the support arm 13 are substantially parallel.
  • the front edge 22 merges in a radius into a lower edge parallel to the inner wall 18 of the intake stub 17.
  • the upper edge of the support arm 13 is fixed to the inner wall 18 of the intake manifold 17 or integrated in this. From the upper edge of the support arm 13 extends from the inlet opening 24 of the intake manifold 17 inclined toward the pump chamber 5.
  • an angle ⁇ is between the front edge 22 and the center axis M of the intake manifold 17, which corresponds to the central axis of the axis 10.
  • the seat 12 has substantially the shape of a cone, wherein the cone tip is directed to the inlet opening 24 of the intake manifold 17 and on the opposite side, the receiving opening for the axis 10 is provided.
  • the tip of the seat 12 is located at a horizontal distance a to the front edge 22 of the support arm.
  • the seat 12 is integrally formed with the support arm 13, then this can be formed by a thickening of the thickness of the support arm 13 and a receiving opening for the axis 10 introduced into this thickening.
  • the receiving opening of the seat 12 grooves or the like may be provided which ensure the rotationally fixed mounting of the axle 10.

Landscapes

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

Claims (11)

  1. Corps de pompe pour une pompe (1) dotée d'un moteur à rotor immergé, lequel corps de pompe présente côté entrée un siège (12) pour l'axe (19) du moteur à rotor immergé, le corps de pompe (2) présentant un embout d'aspiration (17) muni d'un orifice d'entrée, le siège (12) étant fixé à l'embout d'aspiration (17) seulement à une extrémité par l'intermédiaire d'un seul bras de support (13), la longueur du bras de support (13) étant supérieure au rayon de l'embout d'aspiration (17), le bras de support (13) étant réalisé en forme d'une nervure qui présente un bord avant (22), un bord arrière (23) et un bord inférieur reliant le bord avant (22) et le bord arrière (23), le bord avant (22) étant disposé en étant tourné vers l'orifice d'entrée et le bord arrière (23), dans le sens d'écoulement, étant disposé derrière le bord avant (22), et le bord inférieur étant disposé sur l'extrémité libre du bras de support, caractérisé en ce que le bord inférieur est disposé parallèlement à la paroi intérieure de l'embout d'aspiration (17).
  2. Corps de pompe selon la revendication 1, caractérisé en ce que le bord avant (22) et le bord arrière (23) s'étendent essentiellement parallèlement.
  3. Corps de pompe selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le bras de support (13) est disposé dans l'embout d'aspiration (17) de manière à ce que celui-ci s'étende verticalement lorsque le corps (2) est orienté horizontalement.
  4. Corps de pompe selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le siège (12) est distancé du bord avant (22) du bras de support (13) dans le sens d'écoulement principal du liquide à transporter par la pompe (1).
  5. Corps de pompe selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le corps de pompe (2) présente un axe médian (M) et en ce que le bord avant (22) du bras de support (13), par rapport à l'axe médian (M), se situe dans un angle (β) inférieur à 90°, de préférence inférieur à 70°.
  6. Corps de pompe selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le bras de support (13), sur le bord avant (22), est arrondi dans la partie inférieure.
  7. Corps de pompe selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le bras de support (13) et le siège (12) sont conçus d'une seule pièce.
  8. Corps de pompe selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le siège (12) est formé par un épaississement du bras de support (13) et par une ouverture de logement placée dans cet épaississement pour l'axe (10).
  9. Corps de pompe selon la revendication 8, caractérisé en ce que des rainures sont ménagées dans l'ouverture de logement du siège (12), lesquelles garantissent le logement de l'axe (10) de manière solidaire en rotation.
  10. Pompe avec moteur à rotor immergé, caractérisée en ce que celle-ci présente un corps de pompe (2) selon l'une quelconque des revendications 1 à 9.
  11. Appareil ménager à circulation d'eau, caractérisé en ce que celui-ci comprend une pompe (1) selon la revendication 10.
EP06792467.0A 2005-08-04 2006-06-27 Corps de pompe, pompe et appareil menager a circulation d'eau Not-in-force EP1913262B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06792467T PL1913262T3 (pl) 2005-08-04 2006-06-27 Obudowa pompy, pompa i prowadzące wodę urządzenie gospodarstwa domowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005036818.2A DE102005036818B4 (de) 2005-08-04 2005-08-04 Pumpengehäuse, Pumpe und wasserführendes Haushaltsgerät
PCT/EP2006/063593 WO2007014807A1 (fr) 2005-08-04 2006-06-27 Corps de pompe, pompe et appareil menager a circulation d'eau

Publications (2)

Publication Number Publication Date
EP1913262A1 EP1913262A1 (fr) 2008-04-23
EP1913262B1 true EP1913262B1 (fr) 2017-04-05

Family

ID=37084579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06792467.0A Not-in-force EP1913262B1 (fr) 2005-08-04 2006-06-27 Corps de pompe, pompe et appareil menager a circulation d'eau

Country Status (8)

Country Link
EP (1) EP1913262B1 (fr)
KR (1) KR20080024539A (fr)
CN (1) CN101233327A (fr)
AU (1) AU2006275015A1 (fr)
DE (1) DE102005036818B4 (fr)
ES (1) ES2626998T3 (fr)
PL (1) PL1913262T3 (fr)
WO (1) WO2007014807A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008064099B4 (de) * 2008-12-19 2016-05-04 Bühler Motor GmbH Kreiselpumpe mit einer feststehenden Achse
DE102010042491A1 (de) 2010-10-15 2012-05-03 BSH Bosch und Siemens Hausgeräte GmbH Pumpeneinrichtung für ein Hausgerät, Hausgerät und Verfahren zum Betreiben eines Antriebsmotors
DE102010042513A1 (de) 2010-10-15 2012-04-19 BSH Bosch und Siemens Hausgeräte GmbH Pumpe für ein Hausgerät, Hausgerät mit einer Pumpe und Verfahren zum Betreiben eines Hausgeräts
DE102011121149A1 (de) * 2011-12-15 2013-06-20 Wilo Se Nassläuferpumpe mit Vorkammer
PL2610500T3 (pl) 2011-12-27 2016-03-31 Grundfos Holding As Agregat pompowy
DE102013014140A1 (de) * 2012-12-21 2014-06-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Elektromotorische Wasserpumpe
CN106762694B (zh) * 2016-12-12 2017-09-15 华中科技大学 一种微型水力悬浮机械泵
DE102018204503A1 (de) * 2018-03-23 2019-09-26 Robert Bosch Gmbh Flüssigkeitspumpe
KR102574065B1 (ko) * 2023-01-26 2023-09-05 (유)한성산기 진동저감펌프

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Publication number Priority date Publication date Assignee Title
DE1528691A1 (de) * 1966-03-05 1969-07-10 Neyrpic Ets Kreiselpumpensaugkruemmer
DE2809973A1 (de) * 1978-03-08 1979-09-13 Baensch Tetra Werke Aquarienumwaelzpumpenaggregat
JPS5872692A (ja) * 1981-10-26 1983-04-30 Shibaura Eng Works Co Ltd ポンプ
DE8516571U1 (de) * 1985-06-07 1985-09-26 Tunze, Norbert, 8122 Penzberg Pumpeneinheit für Aquarien
DE4203381A1 (de) * 1992-02-06 1993-08-12 Bosch Gmbh Robert Aggregat zum foerdern eines fluessigen mediums, insbesondere eines waermetraegers, in dem zu einem kraftfahrzeug gehoerenden kuehl-heizkreislauf
DE4305023C2 (de) * 1992-02-18 1999-08-19 Oken Seiko Kk Flügelradpumpe
US5458459A (en) * 1992-07-30 1995-10-17 Haemonetics Corporation Centrifugal blood pump with impeller blades forming a spin inducer
DE10352487A1 (de) * 2003-07-22 2005-02-10 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit integriertem Motor
DE10342050A1 (de) * 2003-09-11 2005-04-07 BSH Bosch und Siemens Hausgeräte GmbH Elektrische Maschine und diese verwendende Pumpe

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
WO2007014807A1 (fr) 2007-02-08
DE102005036818B4 (de) 2015-03-05
ES2626998T3 (es) 2017-07-26
EP1913262A1 (fr) 2008-04-23
DE102005036818A1 (de) 2007-02-08
AU2006275015A1 (en) 2007-02-08
CN101233327A (zh) 2008-07-30
KR20080024539A (ko) 2008-03-18
PL1913262T3 (pl) 2017-08-31

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