EP2233744B1 - Motopompe centrifuge - Google Patents

Motopompe centrifuge Download PDF

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Publication number
EP2233744B1
EP2233744B1 EP10000677.4A EP10000677A EP2233744B1 EP 2233744 B1 EP2233744 B1 EP 2233744B1 EP 10000677 A EP10000677 A EP 10000677A EP 2233744 B1 EP2233744 B1 EP 2233744B1
Authority
EP
European Patent Office
Prior art keywords
pump
centrifugal pump
flexible
decoupling
pump according
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.)
Active
Application number
EP10000677.4A
Other languages
German (de)
English (en)
Other versions
EP2233744A2 (fr
EP2233744A3 (fr
Inventor
Thomas Materne
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.)
Wilo SE
Original Assignee
Wilo SE
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 Wilo SE filed Critical Wilo SE
Publication of EP2233744A2 publication Critical patent/EP2233744A2/fr
Publication of EP2233744A3 publication Critical patent/EP2233744A3/fr
Application granted granted Critical
Publication of EP2233744B1 publication Critical patent/EP2233744B1/fr
Active 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • 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
    • F04D13/0626—Details of the can
    • 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
    • F04D13/064—Details of the magnetic circuit
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/518—Ductility

Definitions

  • the invention relates to a centrifugal motor pump in wet rotor design with a surrounding the electric motor rotor containment shell or can.
  • centrifugal motor pumps in which the motor rotor is surrounded by a split pot or can, so that the rotor is cooled by the fluid flowing around. Furthermore, by the non-prepublished German patent application ( 102008055613.0 ) proposed to form the pump chamber through the split tube.
  • the object of the invention is to improve a centrifugal motor pump of the type mentioned so that with high noise insulation safe seals can be achieved.
  • the containment shell or the can is guided so far to the pump impeller that he / it surrounds the pump impeller and the wall of the particular spiral pump chamber completely or partially forms, and that the pump inlet facing the pump chamber wall on the The edge of the pump inlet opening and / or the pump outlet is connected and flexible, as a decoupling element to allow movements of the split pot or can with respect to the pump housing limited.
  • the vibratory mounted pump has a canned / containment shell with at least partially formed spiral space.
  • the pump is vibration-decoupled / damped by means of vibration elements with respect to a rigid outer casing.
  • the spiral space formed on the gap tube is closed by means of an elastic component on the inlet and outlet side.
  • the closing component includes parts of the spiral contour and possibly the geometry of the inlet and outlet sides.
  • the component in the center has a possibly concentrically shaped membrane, which seals against the inlet side of the rigid connection housing. If necessary, this membrane can be designed such that it assumes the function of a vibration-reducing decoupling element. Due to the elastic design and the tongue of the spiral contour is elastic, resulting in the reduction of blade vibrations.
  • a centrifugal motor pump is shown in Navyssenrbauart.
  • the can 1 is closed at both ends in each case by a bearing plate 6a, 6b, in whose bearings 7 the motor shaft 4 is mounted, which carries the pump impeller 9 at one end.
  • Return ring 2 and windings 3 are sheathed by a potting material 10 made of elastic plastic, in particular an elastomer, so that the stator with its potting material 10 forms a unit from which the motor shaft 4 exits into the pump chamber 11 in order to carry there the pump impeller 9.
  • the motor stator is surrounded by an outer motor housing 12 at a distance such that there is an intermediate space 13 between the stator and the housing 12.
  • the intermediate space 13 is bridged by the potting material 10 as a vibration damper in particular as a spring element which decouples the stator relative to the motor housing 12 and thus ensures that vibrations generated by the stator or rotor 5 are not transmitted to the motor housing 12 substantially.
  • the can 1 also forms the pump chamber 11 and also the pump spiral space.
  • the can 1 (which may also be formed by a containment shell) extends far into the pump area or into the pump housing, projects beyond and surrounds the pump impeller 9 and at the same time forms the suction opening / pump inlet opening 20 with the suction nozzle and the pressure opening / pump outlet opening 21 with the discharge nozzle.
  • the relatively rigid plastic material of the can 1 is not guided to the inlet and outlet ports 20, 21, but it ends earlier and it is attached to this material, a second wall-shaped decoupling element 23 / attached from flexible plastic, which up to the openings 20, 21 is guided and at least at the pump inlet opening is secured sealed all around, so that a limited mobility of the can 1 with respect to the pump housing 22 and the openings 20, 21 is given.
  • the decoupling element 23 has a membrane 24, by which a high degree of flexibility is ensured.
  • the material of the decoupling element 23 itself may be less flexible.
  • the winding 3 is electrically connected via a coil wire 18 and a liquid-tight contact 19.

Landscapes

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

Claims (9)

  1. Pompe centrifuge à rotor noyé avec un manchon ou un tube d'entrefer (1) entourant le rotor du moteur électrique (5), caractérisée en ce que le manchon ou le tube d'entrefer (1) est guidé vers le galet de la pompe (9) jusqu'à ce qu'il entoure le galet de la pompe (9) et forme entièrement ou partiellement la paroi de la chambre de la pompe (17) en forme de spirale et en ce que la zone (23) de la paroi de la chambre de la pompe (25), orientée vers l'entrée de la pompe, est reliée au bord de l'ouverture d'entrée de la pompe (20) et/ou de l'ouverture de sortie de la pompe (21) et est flexible afin de permettre, de manière limitée, en tant qu'élément de découplage, les mouvements du manchon ou tube d'entrefer (1) par rapport au carter de la pompe (22).
  2. Pompe centrifuge à rotor noyé selon la revendication 1, caractérisée en ce que la zone (23) de la paroi de la chambre de la pompe (25), orientée vers l'entrée de la pompe, est constituée d'un matériau flexible, plus particulièrement d'une matière plastique flexible ou d'un caoutchouc.
  3. Pompe centrifuge à rotor noyé selon la revendication 1 ou 2, caractérisée en ce que la zone (23) de la paroi de la chambre de la pompe (25), orientée vers l'entrée de la pompe, comprend une membrane flexible (24) ou est constituée d'une membrane flexible.
  4. Pompe centrifuge à rotor noyé selon l'une des revendications précédentes, caractérisée en ce que la languette du contour spiralé de la paroi de la chambre de la pompe (25) est constituée d'un matériau flexible, plus particulièrement d'une matière plastique flexible ou d'un caoutchouc.
  5. Pompe centrifuge à rotor noyé selon l'une des revendications précédentes, caractérisée en ce que, entre le stator du moteur et le carter extérieur du moteur (12) se trouve un dispositif de découplage (10) permettant de réduire les nuisances sonores.
  6. Pompe centrifuge à rotor noyé selon la revendication 5, caractérisée en ce que le dispositif de découplage (10) est constitué d'un matériau de scellement de type matière plastique élastique, plus particulièrement d'un élastomère.
  7. Pompe centrifuge à rotor noyé selon la revendication 5, caractérisée en ce que le dispositif de découplage (10) est constitué d'éléments amortisseurs.
  8. Pompe centrifuge à rotor noyé selon l'une des revendications précédentes, caractérisée en ce que le stator du moteur est entouré d'un matériau de scellement de type matière plastique insonorisant (10) et, entre le matériau de scellement de type matière plastique (10) et le carter du moteur (12) se trouve un espace intermédiaire (13) traversé par le liquide refoulé par la pompe.
  9. Pompe centrifuge à rotor noyé selon l'une des revendications précédentes, caractérisée en ce que, sur le côté intérieur du tube d'entrefer (1) ou du manchon d'entrefer, est fixée, plus particulièrement moulé, au moins un flasque (6a) qui supporte un palier (7) pour l'arbre du moteur (4).
EP10000677.4A 2009-03-24 2010-01-23 Motopompe centrifuge Active EP2233744B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009014639A DE102009014639A1 (de) 2009-03-24 2009-03-24 Kreiselmotorpumpe

Publications (3)

Publication Number Publication Date
EP2233744A2 EP2233744A2 (fr) 2010-09-29
EP2233744A3 EP2233744A3 (fr) 2012-10-17
EP2233744B1 true EP2233744B1 (fr) 2014-02-19

Family

ID=41716348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000677.4A Active EP2233744B1 (fr) 2009-03-24 2010-01-23 Motopompe centrifuge

Country Status (2)

Country Link
EP (1) EP2233744B1 (fr)
DE (1) DE102009014639A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748323A (zh) * 2012-06-29 2012-10-24 江苏国泉泵业制造有限公司 一种高比转数螺旋离心泵
US9360015B2 (en) 2012-07-16 2016-06-07 Magna Powertrain Of America, Inc. Submerged rotor electric water pump with structural wetsleeve
US10064537B2 (en) 2014-11-24 2018-09-04 Whirlpool Corporation Dishwasher drain assemblies having overmolded volutes
CN108980097A (zh) * 2018-09-20 2018-12-11 合肥恒大江海泵业股份有限公司 一种污水泵叶轮防松动装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312848A (en) * 1941-01-07 1943-03-02 Albert R Pezzillo Motor driven pump unit
DE1812973U (de) * 1960-04-14 1960-06-09 Poul Due Jensen Kreiselpumpe.
FR2389784B1 (fr) * 1977-05-06 1984-02-24 Siebec Filtres
DE8702051U1 (de) * 1987-02-11 1988-06-16 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum Fördern von Kraftstoff aus einem Vorratstank zu einer Brennkraftmaschine, insbesondere eines Kraftfahrzeuges
JPH10311290A (ja) * 1997-05-13 1998-11-24 Japan Servo Co Ltd キャンドモータポンプとその製造方法
JP4250783B2 (ja) * 1998-04-09 2009-04-08 パナソニック電工株式会社 電磁駆動ポンプ
JP2001099090A (ja) * 1999-10-04 2001-04-10 Matsushita Electric Ind Co Ltd ポンプ
DE102007040461A1 (de) * 2007-08-28 2009-03-05 Wilo Ag Kreiselmotorpumpe
DE102008055614A1 (de) 2008-11-03 2010-05-06 Wilo Se Kreiselmotorpumpe
DE102008055613A1 (de) 2008-11-03 2010-05-06 Wilo Se Kreiselmotorpumpe

Also Published As

Publication number Publication date
DE102009014639A1 (de) 2010-09-30
EP2233744A2 (fr) 2010-09-29
EP2233744A3 (fr) 2012-10-17

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