EP1343972B1 - Procede de fonctionnement d'un groupe motopompe - Google Patents

Procede de fonctionnement d'un groupe motopompe Download PDF

Info

Publication number
EP1343972B1
EP1343972B1 EP01991838A EP01991838A EP1343972B1 EP 1343972 B1 EP1343972 B1 EP 1343972B1 EP 01991838 A EP01991838 A EP 01991838A EP 01991838 A EP01991838 A EP 01991838A EP 1343972 B1 EP1343972 B1 EP 1343972B1
Authority
EP
European Patent Office
Prior art keywords
rotor
pump assembly
assembly according
space
bearing
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
EP01991838A
Other languages
German (de)
English (en)
Other versions
EP1343972A1 (fr
Inventor
Jorgen Christensen
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.)
Grundfos AS
Original Assignee
Grundfos AS
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 Grundfos AS filed Critical Grundfos AS
Publication of EP1343972A1 publication Critical patent/EP1343972A1/fr
Application granted granted Critical
Publication of EP1343972B1 publication Critical patent/EP1343972B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • F04D13/0633—Details of the bearings
    • 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • 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
    • F05D2260/60—Fluid transfer
    • F05D2260/602—Drainage
    • F05D2260/6022—Drainage of leakage having past a seal

Definitions

  • the invention relates to a method for operating a pump unit according to the features specified in the preamble of claim 1 and a pump unit according to the features specified in the preamble of claim 2.
  • a method and such a pump is for example from the US-A-5 144 177 known.
  • Centrifugal pump units of small and medium power are usually designed as wet rotors, d. H. they have a split tube, which seals the rotor space with respect to the stator space, in particular against ingress of pumped liquid.
  • the delivery fluid located in the rotor chamber is used in particular for the lubrication of bearing the rotor shaft bearings.
  • the pumps of this type have proven to be very good, since they do not require a seal to the range of moving parts, the rotor space can thus be connected to the pump room line.
  • the present invention seeks to provide a method for operating a pump unit, with which an operation of the pump at higher speeds is possible.
  • a generic pump unit should be designed so that it can be driven at high speeds without the input described systemic disadvantages of the two systems (wet / dry runner) exhibit.
  • the basic idea of the present invention is to operate a wet-running motor in such a way that it can be designed as a wet-running motor of its type, but has the properties of a dry-runner during operation, in particular without the liquid normally located in the rotor space of wet-running engines running.
  • the structural advantages of the wet-running motor which requires no complex seals between the pump and the engine, can be maintained without having to forego the advantageous properties of a dry rotor, especially at high speeds.
  • the invention thus provides for method according to claim 1, according to which, during and / or after the startup of the engine to an operating speed, the liquid in the rotor chamber is at least partially removed. In this case, the liquid located between the rotor and the can is vaporized by the action of heat. It is precisely in this area that the removal of the liquid is particularly important since, due to the high relative speeds between the rotor and the can, the highest friction is produced.
  • the rotor space is sealed off from the delivery fluid in a pressure-limited manner.
  • a pressure-limited seal is sufficient to keep the rotor space during operation largely liquid.
  • the design definitely provides that the rotor space is filled with liquid before the start of the engine.
  • the liquid is either by a separate dedicated valve, by only up to a certain pressure effective Removing the seal from the rotor chamber by evaporating the liquid due to heating and thus increasing the volume.
  • the pressure increases until the pressure limit of the rotor space is exceeded and the liquid located there, either in gaseous or liquid form, escapes.
  • the pump design can be provided in an advantageous manner as in a wet-running motor, so that in particular the low-cost liquid-lubricated plain bearings suitable for high speeds can be used.
  • the invention provides for arranging the bearing bearing the rotor outside the rotor space.
  • at least one bearing bearing the rotor preferably arranged the the pump impeller within the gap tube, since then a liquid supply via the central shaft bore and thus also a substantial axial pressure compensation can take place on the shaft.
  • pressure-limiting sealing means mechanical seals are preferably used, wherein the adjustment of the pressure limiting takes place by selecting a corresponding spring, with which the sliding rings are kept in contact.
  • the mechanical seal is arranged in each case between the rotor and the adjacent bearing, wherein the bearing receiver is seated within the gap tube for the bearing remote from the rotor.
  • the bearing seat is suitably sealed by means of an outer seal against the can and by means of an inner seal against the fixed part of the mechanical seal.
  • the bearing seat or the mechanical seal with play abut the front side of the rotor or a separate displacement component between the bearing holder and rotor is provided, which can be filled by the liquid during operation, the free Volume between the front of the rotor and the bearing receptacle reduced.
  • This displacer component is expediently made of heat-insulating material, preferably plastic, in order to prevent the heat deliberately generated in the rotor chamber from being evaporated off at the end for evaporating the liquid located there or that condensate is formed in this region. That's why it is expedient to also manufacture the bearing mounts of a heat-insulating material.
  • the gap tube heatable at least in a partial region.
  • the generation of heat by friction in the area between the rotor and the can so that the liquid is heated automatically at startup of the engine and thus evaporated.
  • it can also be provided in addition or for evaporation before starting the engine a Spaltrohrheitzung, either by an electrical resistance heater or inductively, in particular by the magnetic field formed between the rotor and the stator during operation.
  • a permanent magnet motor is used.
  • the pump unit shown in the figures has a housing 1 of round cross-section, at the lower end side of which a suction-side inlet 2 and at the upper end side of which a pressure-side outlet 3 is formed.
  • the liquid to be conveyed is sucked in at the inlet 2, from there into a suction mouth 4 of a centrifugal wheel 5 of the pump, from which it passes radially outwards into an annular channel 6 to the outlet 3.
  • the channel 6 is bounded on its outside by the housing 1, on its inside by a motor housing 7 which is fixed within the housing 1.
  • the electrical supply of the unit via a laterally from the motor housing 7, the channel 6 passing and led out of the housing 1 electrical connection 8.
  • the motor housing 7 receives a stator 9, which is bounded on its inner side by a split tube 10.
  • a rotor 11 which sits on a shaft 12 which is mounted near its ends in plain bearings 13, 14 which sit in bearing receivers 15, 16, which are defined within the can 10 and thus within the motor housing 7.
  • the gap tube 10 radially defines a rotor chamber 17 which is frontally by mechanical seals 18, 19 spatially and pressure-limited with respect to the remaining canned space.
  • the shaft 12 which is mounted within the plain bearings 13 and 14, carries at the lower end of the impeller 5 and the rest of the rotor 11. It has a central through-bore 20, which a line connection between the suction port 4 and the in FIG. 1 forms the upper end of the motor housing 7. Since the shaft 12 as usual in wet-running motors, not sealed against the pump chamber, both the upper bearing 13 via the bore 20 and the lower bearing 14 are supplied with delivery fluid. In this case, the delivery pressure of the pump is present at the lower bearing 14, whereas the suction-side pressure is present at the upper bearing 13.
  • the rotor chamber 17 is sealed only via mechanical seals 18 and 19 with respect to the liquid-filled gap tube space during operation. The structure of such a mechanical seal is based on the upper mechanical seal 18 in FIG. 2 shown.
  • the mechanical seal 18 consists of a stationary seal ring 21 which is incorporated within the bearing receiving member 15 forming member, radially sealed relative to this by means of an O-ring 22 and slidably mounted in the axial direction of the shaft 12.
  • This stationary seal ring 21 is pressurized by a coil spring 23 surrounding the shaft 12.
  • the coil spring 23 is also disposed within the bearing receptacle 15 forming member. This formed between the shaft 12 and the bearing receptacle 15 forming member annular space is connected via a channel 24 with the demarcated by the motor housing 7 space in the region of the upper bearing 13, which communicates with the bore 20 in line connection.
  • a rotating seal ring 25 is located on the front side of the stationary seal ring 21, it sits within a shaft paragraph and rotates with the shaft 12th
  • the mechanical seal 18 thus formed seals the rotor chamber 17 from the rest of the canned space, a corresponding seal being provided on the other side of the rotor 11.
  • the rotor chamber 17 When starting the pump, the rotor chamber 17 may be completely or partially filled with delivery fluid. As soon as the engine speed increases, the liquid in the rotor chamber 17 is heated. As long as until finally the liquid evaporates and the pressure within the rotor chamber 17 increases rapidly. When the limit pressure formed by the mechanical seal 18 and set by the urging force of the spring 23 is exceeded, the stationary seal ring lifts off the rotating seal ring 25, thus moving as shown in FIG FIG. 1 to the top, whereby the rotor chamber 17 with the space surrounding the bearing 13 via the duct 24 conductively connected becomes. Due to the pressure formed in the rotor chamber 17, the rotor chamber is automatically emptied via the mechanical seal 18, until finally no liquid, but only steam in the rotor chamber is located. Then the engine works like a dry-running motor. The operating speed of such a motor may for example be between 40,000 and 100,000 revolutions per minute. The process described above is repeated at each start of the engine, if the rotor chamber 17 is filled with liquid again.
  • a follower first displacement body 26 is provided, which is arranged frontally of the rotor, and a second fixed displacement body 27, which via an O-ring 28 close to the can 10 is present.
  • the displacement body 26 and 27 are formed of heat-insulating plastic and have two main purposes. On the one hand, they are intended to largely fill the space remaining in the rotor space 17 between the rotor 11 and the component receiving the bearing receptacle 15 in order to minimize the free volume of the rotor space 17 and thus the possible fluid intake thereof.
  • these bodies 26 and 27 are insulating bodies which isolate the hot rotor space 17 during operation from the adjacent storage space, in order thus to avoid condensation in this area and thus increased friction.
  • the design and arrangement of the arranged on the other side of the rotor 11 mechanical seal 19 corresponds functionally to the structure described on the basis of the mechanical seal 18. Also there are displacement body 26 and 27 are provided. Due to the design, the removal of the liquid from the rotor chamber 17 can basically via one or both of the Mechanical seals 18 and 19 take place. However, this is preferably done via the upper mechanical seal 18, since there is only the suction side pressure over the bore 12, whereas on the other mechanical seal 19, the pressure-side pressure is applied, which must be overcome when removing the liquid from the rotor chamber.
  • the heating and evaporation of the liquid located in the rotor chamber is carried out automatically as soon as corresponding rotational speed ranges are reached.
  • an additional electric or other heating so preferably the split tube in the area outside the rotor 12, ie where the displacement body 26 and 27 are angordnet be heated.
  • a pressure relief valve may be provided at a suitable location in the rotor space, for example in the can, in order to remove the liquid.
  • the motor shown in the embodiment is a DC motor, but it can also be used alternating or high-current motors.

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)
  • Reciprocating Pumps (AREA)

Claims (15)

  1. Procédé pour l'exploitation d'un groupe motopompe comprenant une pompe centrifuge et un moteur électrique d'entraînement de cette dernière, dont le rotor (11) tourne dans une gaine (10), laquelle isole le compartiment (17) du rotor vis-à-vis du stator (9) d'une façon étanche aux fluides, caractérisé en ce que le compartiment (17) du rotor est rendu étanche par des moyens d'étanchéité (17, 18) qui étanchéifient le compartiment (17) du rotor par rapport au liquide transporté, sous pression limitée, ce par quoi, pendant et/ou après la montée en régime du moteur jusqu'à une vitesse de service normale, le liquide transporté présent dans le compartiment (17) du rotor, entre le rotor (11) et la gaine (10), est évaporé et partiellement éliminé par action de la chaleur.
  2. Groupe motopompe, destiné en particulier à être exploité selon un procédé conforme à la revendication 1, comprenant une pompe centrifuge et un moteur électrique d'entraînement de cette dernière, dont le rotor (11) tourne dans une gaine (10), laquelle isole le compartiment (17) du rotor vis-à-vis du stator (9) d'une façon étanche aux fluides, caractérisé en ce que le compartiment (17) du rotor est rendu étanche par des moyens d'étanchéité (17, 18) qui étanchéifient le compartiment (17) du rotor par rapport au liquide transporté, sous pression limitée, ce par quoi, pendant et/ou après la montée en régime du moteur jusqu'à une vitesse de service normale, le liquide transporté présent dans le compartiment (17) du rotor, entre le rotor (11) et la gaine (10), est évaporé et partiellement éliminé par action de la chaleur.
  3. Groupe motopompe selon la revendication 2, caractérisé en ce que les paliers (13, 14) portant le rotor (11) sont disposés à l'extérieur du compartiment (17) du rotor.
  4. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce qu'au moins un palier (13, 14) portant le rotor (11), est disposé à l'intérieur de la gaine (10).
  5. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que les deux extrémités d'arbre ressortent du compartiment (17) du rotor, en ce qu'à une extrémité d'arbre, il est prévu une roue mobile (5), et en ce que le liquide à éliminer est évacué à proximité de l'extrémité d'arbre située à l'opposé de la roue mobile (5).
  6. Groupe motopompe selon la revendication 1, caractérisé en ce que les moyens qui étanchéifient le compartiment (17) du rotor par rapport au liquide transporté, sous une pression limitée, sont formés par au moins une garniture d'étanchéité à anneau glissant (18, 19).
  7. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce qu'un palier (13, 14) recevant l'arbre (12) du rotor (11) est placé dans un support de réception de palier (15, 16), qui est incorporé dans la gaine (10), et en ce que la garniture d'étanchéité à anneau glissant (18, 19) est disposée entre le rotor (11) et un support de réception de palier (15, 16).
  8. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que le support de réception de palier (15, 16) est étanchéifié par rapport à la gaine (10) au moyen d'un joint d'étanchéité extérieur (28) et par rapport à la partie fixe (21) de la garniture d'étanchéité à anneau glissant (18, 19), au moyen d'un joint d'étanchéité intérieur (22).
  9. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que le support de réception de palier (15, 16) ou la garniture d'étanchéité à anneau glissant (18, 19) porte frontalement, avec du jeu, contre le rotor (11) ou bien il est prévu, entre le support de réception de palier (15, 16) et le rotor (11), un composant de refoulement (26, 27) séparé, qui réduit le volume libre, susceptible d'être rempli en service par du liquide, entre le rotor (11) et le support de réception de palier (15, 16).
  10. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que les joints d'étanchéité (22, 28) entre le support de réception de palier (15, 16) et la gaine (10) ainsi qu'entre le support de réception de palier (15, 16) et la partie fixe (21) de la garniture d'étanchéité à anneau glissant (18, 19), sont formés par des joints toriques (22, 28).
  11. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que le support de réception de palier (15, 16) et/ou le composant de refoulement (26, 27) sont réalisés en un matériau thermiquement isolant.
  12. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que la gaine (10) peut être chauffée, au moins dans une zone partielle.
  13. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que la gaine (10) peut être chauffée électriquement.
  14. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que la gaine (10) peut être chauffée par induction, en particulier par le champ magnétique établi, en service, entre le rotor (11) et le stator (9).
  15. Groupe motopompe submersible selon l'une des revendications précédentes, caractérisé en ce que le moteur est un moteur à aimants permanents.
EP01991838A 2000-12-22 2001-12-13 Procede de fonctionnement d'un groupe motopompe Expired - Lifetime EP1343972B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10064717 2000-12-22
DE10064717A DE10064717A1 (de) 2000-12-22 2000-12-22 Verfahren zum Betreiben eines Pumpenaggregats
PCT/EP2001/014656 WO2002052156A1 (fr) 2000-12-22 2001-12-13 Procede de fonctionnement d'un groupe motopompe

Publications (2)

Publication Number Publication Date
EP1343972A1 EP1343972A1 (fr) 2003-09-17
EP1343972B1 true EP1343972B1 (fr) 2009-01-14

Family

ID=7668769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01991838A Expired - Lifetime EP1343972B1 (fr) 2000-12-22 2001-12-13 Procede de fonctionnement d'un groupe motopompe

Country Status (7)

Country Link
US (1) US7264450B2 (fr)
EP (1) EP1343972B1 (fr)
JP (1) JP4195291B2 (fr)
CN (1) CN1238638C (fr)
AT (1) ATE421041T1 (fr)
DE (2) DE10064717A1 (fr)
WO (1) WO2002052156A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7513755B2 (en) * 2003-07-03 2009-04-07 Vaporless Manufacturing, Inc. Submerged motor and pump assembly
DE502005004805D1 (de) * 2005-05-07 2008-09-04 Grundfos Management As Pumpenaggregat
EP1767787B2 (fr) * 2005-09-24 2016-10-26 Grundfos Management A/S Unité de pompe submersible
EP1767786B1 (fr) 2005-09-24 2010-06-02 Grundfos Management A/S Unité de pompe submersible
FR2915535B1 (fr) * 2007-04-30 2009-07-24 Snecma Sa Machine tournante comportant un systeme d'equilibrage axial passif
US20080286134A1 (en) * 2007-05-16 2008-11-20 Steven Regalado Submersible pumping systems and methods for deep well applications
EP2293417B1 (fr) * 2009-09-05 2016-07-06 Grundfos Management A/S Pale de rotor
EP3067564B1 (fr) * 2015-03-09 2019-02-06 Grundfos Holding A/S Groupe motopompe de circulation
KR102331645B1 (ko) * 2017-05-11 2021-11-30 엘지전자 주식회사 터보 압축기
WO2018219399A1 (fr) * 2017-05-31 2018-12-06 Schaeffler Technologies AG & Co. KG Actionneur d'activation comprenant un tube d'entrefer d'étanchéification
CN108566018B (zh) * 2018-07-09 2023-11-10 深圳市八达威科技有限公司 一种旋转式密封的无刷直流电机
DE102019120824A1 (de) * 2019-08-01 2021-02-04 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Spaltrohrmotor mit abstützender Dichtung
CN117212184A (zh) * 2020-08-07 2023-12-12 汉宇集团股份有限公司 电动汽车电源热管理系统用电泵

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942555A (en) * 1957-04-15 1960-06-28 Rinaldo F Pezzillo Combination pump and motor
US3135884A (en) * 1959-01-05 1964-06-02 Emerson Electric Mfg Co Submersible electric motor
US3075104A (en) * 1960-04-22 1963-01-22 Gen Electric Liquid-cooled rotor for a dynamoelectric machine
DK109243C (da) * 1965-09-13 1968-04-01 Smedegaard As Væskecirkulationspumpe.
GB1220073A (en) * 1967-05-04 1971-01-20 Plessey Co Ltd Improvements in or relating to electric-motor and rotary pump units
US3744935A (en) 1971-10-07 1973-07-10 Crane Co Cooling systems for motor driven pumps and the like
FR2508563B1 (fr) * 1981-06-26 1985-11-08 Electro Hydraulique Seh Motopompe a moteur electrique a rotor noye
DE3834668A1 (de) 1988-10-12 1990-04-19 Klein Schanzlin & Becker Ag Druckfest gekapselter spaltrohrmotor
DE19702723A1 (de) * 1997-01-27 1998-08-06 Grundfos As Naßlaufender Tauchmotor zum Antreiben einer Kreiselpumpe
DE19800302A1 (de) * 1998-01-07 1999-07-08 Wilo Gmbh Kreiselmotorpumpe mit Gleitringdichtung

Also Published As

Publication number Publication date
WO2002052156A1 (fr) 2002-07-04
CN1238638C (zh) 2006-01-25
EP1343972A1 (fr) 2003-09-17
CN1481478A (zh) 2004-03-10
ATE421041T1 (de) 2009-01-15
DE10064717A1 (de) 2002-07-11
JP4195291B2 (ja) 2008-12-10
US7264450B2 (en) 2007-09-04
JP2004516422A (ja) 2004-06-03
US20040052645A1 (en) 2004-03-18
DE50114665D1 (de) 2009-03-05

Similar Documents

Publication Publication Date Title
EP1343972B1 (fr) Procede de fonctionnement d'un groupe motopompe
DE3730966C2 (de) Hermetisch geschlossener Rotationskolbenkompressor mit horizontaler Antriebswelle
DE102011001041B4 (de) Magnetisch angetriebene Pumpenanordnung mit einer Mikropumpe mit Zwangsspuelung und Arbeitsverfahren
DE69000990T2 (de) Zweistufige trockenprimaerpumpe.
DE69724561T2 (de) Spiralverdichter
EP1252445B1 (fr) Pompe turbo-moléculaire
DE4300368C2 (de) Elektrische Kraftstoffpumpe
DE2645305C3 (de) Flüssigkeitsring-Verdichter
DE102008026029A1 (de) Kraftstoffpumpenanordnung für ein Kraftstoffpumpenmodul
EP0346730A2 (fr) Unité de pompe submersible
DE102016105309A1 (de) Magnetkupplungspumpe
DE102013107986A1 (de) Umwälzpumpe
EP1936200B1 (fr) Pompe à vide à palettes étanchéifiée à l'aide de lubrifiants
EP2739856A2 (fr) Pompe à rotor noyé comportant une électronique de puissance
DE60313493T2 (de) Vakuumpumpe
DE102007059938A1 (de) Vakuumpumpe und Verfahren zum Betrieb
EP0982499B1 (fr) Pompe centrifuge à entrainement magnétique
WO2020074318A1 (fr) Pompe conçue en particulier pour un circuit de liquide dans un véhicule
EP2002123B1 (fr) Pompe a fluide
DE10012663B4 (de) Kühlmittelpumpe mit elektronisch kommutiertem Eletromotor
EP3299627B1 (fr) Pompe d'alimentation
EP0903500A2 (fr) Pompe de refroidissement à entraínement électrique
EP1119709A1 (fr) Pompe a vide a friction avec stator et rotor
DE102015113821B4 (de) Vakuumpumpe
DE2354046A1 (de) Elektrisch angetriebene turbomolekularvakuumpumpe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030524

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17Q First examination report despatched

Effective date: 20061120

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50114665

Country of ref document: DE

Date of ref document: 20090305

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090114

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090114

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090425

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090615

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090414

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090114

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090114

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20091015

BERE Be: lapsed

Owner name: GRUNDFOS A/S

Effective date: 20091231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100701

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091231

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090415

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090114

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20201217

Year of fee payment: 20

Ref country code: GB

Payment date: 20201222

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20201215

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20201230

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50114665

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20211212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20211212