EP3376038B1 - Groupe motopompe - Google Patents

Groupe motopompe Download PDF

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Publication number
EP3376038B1
EP3376038B1 EP17160837.5A EP17160837A EP3376038B1 EP 3376038 B1 EP3376038 B1 EP 3376038B1 EP 17160837 A EP17160837 A EP 17160837A EP 3376038 B1 EP3376038 B1 EP 3376038B1
Authority
EP
European Patent Office
Prior art keywords
valve element
suction
openings
switching
opening
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
EP17160837.5A
Other languages
German (de)
English (en)
Other versions
EP3376038A1 (fr
Inventor
Thomas Blad
Peter Mønster
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 Holdings AS
Original Assignee
Grundfos Holdings 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 Holdings AS filed Critical Grundfos Holdings AS
Priority to EP17160837.5A priority Critical patent/EP3376038B1/fr
Priority to US16/493,177 priority patent/US11512712B2/en
Priority to PCT/EP2018/056082 priority patent/WO2018166971A1/fr
Priority to CN201880018580.3A priority patent/CN110418894B/zh
Publication of EP3376038A1 publication Critical patent/EP3376038A1/fr
Application granted granted Critical
Publication of EP3376038B1 publication Critical patent/EP3376038B1/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
    • 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
    • F04D29/4293—Details of fluid inlet or outlet
    • 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
    • F04D13/0686—Mechanical details of the pump control unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • At least one pressure opening can be formed in the pressure surface of the valve element, which in at least one of the switching positions of the valve element is in flow connection with at least one pressure connection of the pump assembly.
  • a switching function on the pressure side can thus be achieved in that liquid is fed from a pressure space surrounding the impeller via the pressure opening through the valve element to the pressure connection of the pump assembly.
  • the pressure connection In a second switching position of the valve element, the pressure connection can be closed in such a way that the pressure opening is no longer in flow-conducting connection with the pressure connection, so that the flow path is interrupted.
  • a mixing function can also be achieved in which the degree of overlap of at least one switching opening with two connection openings is varied in such a way that the cross-sectional ratio of the two free connection openings is changed so that flows from the two connection openings are changed in relation to one another and mixed in different proportions can be.
  • At least one and more preferably several pressure openings are preferably formed, which are connected to one or more pressure-side switching openings via a connection inside the valve element, which are arranged in such a way that, depending on the switching position of the valve element, they are each connected to a pressure-side Connection opening can be brought to cover.
  • the switching openings on the pressure side are also preferably in the second axial end face of the valve element, that is, the end face facing away from the impeller and / or located in a circumferential surface of the valve element.
  • the valve element or the valve device with the valve element is preferably designed and arranged in such a way that the angles of rotation between the individual switching positions correspond to a fixed uniform angular step or a multiple of a fixed angular step. So the individual switch positions for example at certain regular angles, for example 30 °, 45 °, 18 ° or the like apart. A switching position does not actually have to be at each of these regular angular positions, rather it is also possible for two switching positions to be a multiple or an integral multiple of a predetermined fixed angular step apart. If a control device is present in the manner described above, it is further preferably designed in such a way that it can control the respective motor in such a way that the valve element can be moved in the aforementioned angular steps.
  • pressure-side connection openings 50 which are each offset by 90 ° at the angular positions of the pressure connections.
  • the pressure-side connection openings in the bottom of the pump housing 2 lie on an annular surface which is arranged radially on the outside of the suction-side connection opening.
  • Figure 6e shows a further switching position in which two pressure connections lying next to one another are open at the same time.
  • two further pressure-side switching openings 54e are formed in the valve element 18, which are offset by 90 ° to one another.
  • no corresponding pressure-side switching openings are formed at the two remaining associated 90 ° angular positions in the lower part 20, so that in this position the two remaining pressure-side connection openings 50 are closed.
  • the switching position shown are the pressure-side switching openings 54e above the pressure-side Connection openings 50 of the pressure connections 38 and 40.
  • the pressure prevailing in the pressure chamber 38 also causes a pressure force to be generated on the pressure surface on the cover 22, which presses the valve element 18 against the bottom of the pump housing 12 so that it becomes a tight contact comes in the circumferential area of the pressure-side connection openings 50 and so a good seal can be ensured.
  • a seal can thus be created between the suction and pressure sides, that is to say between the pressure-side connection openings 50 and the suction-side connection opening 48.
  • the mating clutch 110 is disengaged from the clutch 82 by the pressure in the pressure chamber 28 Intervention. If the pressure in the pressure chamber 28 increases, a pressure force acts on the cover 22c as a pressure surface which opposes and exceeds the spring force of the spring 80, so that the valve element 18c is pressed into the adjacent position, which in Fig. 19 is shown. In this, the lower part 20c rests against the bottom side of the pump housing 12, so that, on the one hand, the valve element 18c is held in a non-positive manner and, on the other hand, a tight contact is achieved, which seals the pressure and suction sides from one another in the manner described below.
  • centrifugal pump unit with the integrated valve is indicated by the dashed line 1.
  • the hydraulic circuit has a heat source 114 in the form of, for example, a gas boiler, the outlet of which opens into, for example, the suction connection 74 of the pump housing 12.
  • an underfloor heating circuit 116 is connected to the pressure connection 115 of the centrifugal pump unit 1, the return of which is connected both to the inlet of the heat source 114 and to the suction connection 72 of the centrifugal pump unit 1.
  • Such a centrifugal pump unit can, for example, be used in a heating system as shown in Fig. 29 is shown to find use. There, the dashed line delimits the centrifugal pump unit 1, as it is based on the Figures 23 to 28 has been described.
  • the heating system in turn has a primary heat exchanger or a heat source 114, which can be a gas boiler, for example.
  • a first heating circuit 120 which can be formed, for example, by conventional heating elements or radiators.
  • a flow path branches off to a secondary heat exchanger 70 for heating domestic water.
  • the heating system also has an underfloor heating circuit 116.
  • the water flows via the suction connection 72 into the suction mouth 26 of the impeller 14 and is via the pressure connection 115 via the heat source 114 conveyed through the first heating circuit 120 in the manner described.
  • the liquid exits the pressure chamber 28 into the opening 124 and through the passage 122 and thus flows to the connection 74 and via this into the underfloor heating circuit 116.

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 (17)

  1. Groupe motopompe avec au moins une turbine (14) entraînée en rotation et au moins un élément de valve (18) qui est rotatif autour d'un axe de rotation (X) entre au moins deux positions de commutation,
    l'élément de valve (18) ayant une forme de tambour avec une paroi périphérique (20) s'étendant de façon annulaire autour de l'axe de rotation (X) et avec une première face frontale (22) s'étendant transversalement à l'axe de rotation et une deuxième face frontale détournée de la première dans la direction de l'axe de rotation (X),
    dans la première face frontale, dans la zone centrale, une ouverture d'aspiration (24) étant formée qui est en prise avec une bouche d'aspiration (26) de la turbine (14) et
    la première face frontale (22) comprenant une surface de pression entourant l'ouverture d'aspiration (24), qui est adjacente à un volume de pression (28) entourant la turbine (14),
    caractérisé en ce que l'élément de valve (18) est en regard d'au moins deux ouvertures de raccordement (48, 50) de telle façon que lesdites au moins deux ouvertures de raccordement (48, 50) soient en regard de la deuxième face frontale de l'élément de valve (18), et en ce qu'il comprend à l'intérieur de lui-même au moins une liaison qui, en fonction du positionnement ou de la position de commutation de l'élément de valve (18), raccorde sélectivement une des ouvertures de raccordement (48) à l'ouverture d'aspiration (24) ou sélectivement une des ouvertures de raccordement (50) à une ouverture de pression (52) dans la surface de pression ou au moins deux ouvertures de raccordement (48, 50) l'une à l'autre.
  2. Groupe motopompe selon la revendication 1, caractérisé en ce que l'axe de rotation (X) de l'élément de valve (18) est aligné sur un axe de rotation (X) de la turbine (14).
  3. Groupe motopompe selon la revendication 1 ou 2, caractérisé en ce que la turbine (14) est fermée par un disque de recouvrement (30) entourant la bouche d'aspiration (26) frontalement et en ce que, de préférence, un bord périphérique de la bouche d'aspiration (26) est hermétiquement en prise avec un bord périphérique de l'ouverture d'aspiration (24).
  4. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que dans la surface de pression de l'élément de valve (18), au moins une ouverture de pression (52) est formée qui, dans au moins une des positions de commutation de l'élément de valve (18), est en communication fluidique avec au moins un raccord de pression (38, 40, 42, 44) du groupe motopompe.
  5. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que la paroi périphérique a une forme fermée.
  6. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que l'ouverture d'aspiration (24) de l'élément de valve (18) est reliée, via une liaison à l'intérieur de l'élément de valve (18), à au moins une ouverture de commutation (56) du côté aspiration et, de préférence, à au moins deux ouvertures de commutation (56) du côté aspiration dans l'élément de valve (18) qui sont disposées de façon telle qu'elles puissent être faites se recouvrir de différentes façons, en fonction du positionnement de l'élément de valve (18), avec deux ouvertures de raccordement (48) du côté aspiration.
  7. Groupe motopompe selon la revendication 6, caractérisé en ce que lesdites au moins deux ouvertures de commutation (56) du côté aspiration sont radialement espacées, à des distances différentes, de l'axe de rotation (X) de l'élément de valve (18).
  8. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que, dans la surface de pression (22) de l'élément de valve (18), au moins une et, de préférence, plusieurs ouvertures de pression (52) sont formées qui sont reliées, par une liaison à l'intérieur de l'élément de valve (18), à une ou plusieurs ouvertures de commutation (54) du côté pression qui sont disposées de façon telle qu'elles puissent être faites se recouvrir chacune, en fonction de la position de commutation de l'élément de valve (18), avec une ouverture de raccordement (50) du côté pression.
  9. Groupe motopompe selon l'une des revendications 6 et 7 et selon la revendication 8, caractérisé en ce que les ouvertures de commutation (54) du côté pression sont disposées radialement plus loin de l'axe de rotation (X) de l'élément de valve (18) que les ouvertures de commutation (56) du côté aspiration.
  10. Groupe motopompe selon la revendication 8 ou 9, caractérisé en ce que plusieurs ouvertures de raccordement (50) du côté pression et plusieurs ouvertures de commutation (54) du côté pression sont disposées de façon telle que, dans une première position de commutation de l'élément de valve (18), uniquement une ouverture de commutation (54) du côté pression est en regard d'une ouverture de raccordement (50) du côté pression et que, dans au moins une deuxième position de commutation, au moins deux ouvertures de commutation (54) du côté pression sont en regard, chacune, avec une ouverture de raccordement (50) du côté pression.
  11. Groupe motopompe selon la revendication 10, caractérisé en ce que les ouvertures de commutation (54) du côté pression et les ouvertures de raccordement (50) du côté pression sont disposées de façon telle que chacune des ouvertures de raccordement (50) du côté pression soit en regard individuellement, dans une position de commutation spécifique respective de l'élément de valve (18), d'une ouverture de commutation (54) du côté pression et, de préférence, dans au moins une autre position de commutation, plusieurs des ouvertures de raccordement (50) soient en regard, en même temps, d'une ouverture de commutation (54) respective du côté pression.
  12. Groupe motopompe selon l'une des revendications 8 à 11 et une des revendications 6 et 7, caractérisé en ce que les ouvertures de commutation (56) du côté aspiration sont disposées de façon telle que, dans chacune des positions de commutation de l'élément de valve (18) dans laquelle une ou plusieurs ouvertures de commutation (54) du côté pression sont en regard, respectivement, d'une ouverture de raccordement (50) du côté pression, au moins une ouverture de commutation (56) du côté aspiration est en regard d'une ouverture de raccordement (48) du côté aspiration, l'agencement étant de préférence de façon telle que, par un changement du positionnement de l'élément de valve (18) dans la position de commutation, le degré de recouvrement de l'ouverture de commutation (56) du côté aspiration avec ladite au moins une ouverture de raccordement (48) du côté aspiration puisse être varié.
  13. Groupe motopompe selon la revendication 12, caractérisé en ce que les ouvertures de commutation (56) du côté aspiration sont disposées de façon telle que, dans chacune des positions de commutation de l'élément de valve (18), au moins une ouverture de commutation (56) du côté aspiration soit en regard de deux ouvertures de raccordement (48) du côté aspiration, l'agencement étant de préférence de façon telle que, par un changement du positionnement de l'élément de valve (18) dans la position de commutation, le degré de recouvrement de l'ouverture de commutation (56) du côté aspiration avec les ouvertures de raccordement (48) du côté aspiration puisse être varié.
  14. Groupe motopompe selon la revendication 12 ou 13, caractérisé en ce que l'élément de valve (18) est configuré de façon telle qu'un changement de positionnement de l'élément de valve (18) soit mis en œuvre par une rotation de celui-ci dans une plage d'angles qui est inférieure à la plage d'angles entre deux positions de commutation.
  15. Groupe motopompe selon l'une des revendications 12 à 14, caractérisé en ce que l'élément de valve (18), pour le déplacer, peut être accouplé, par un couplage magnétique, mécanique et/ou hydraulique, à un rotor (6) d'un moteur d'entraînement entraînant la turbine (14) ou comprend son propre moteur de déplacement (34) configuré de préférence comme moteur pas-à-pas.
  16. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que l'élément de valve (18) est configuré et disposé de façon telle que les angles de rotation entre les différentes positions de commutation correspondent à un pas d'angle unique fixe ou correspondent à un multiple d'un pas d'angle fixe.
  17. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que l'élément de valve (18) est supporté de façon telle qu'il est déplaçable linéairement, le long de son axe de rotation (X), entre une position d'appui dans laquelle l'élément de valve (18) est en appui sur au moins une surface d'appui, et une position détachée dans laquelle l'élément de valve (18) est espacé de la surface d'appui, la surface d'appui étant, de préférence, une surface d'étanchement et notamment une surface d'étanchement entourant une ouverture de raccordement (48, 50).
EP17160837.5A 2017-03-14 2017-03-14 Groupe motopompe Active EP3376038B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17160837.5A EP3376038B1 (fr) 2017-03-14 2017-03-14 Groupe motopompe
US16/493,177 US11512712B2 (en) 2017-03-14 2018-03-12 Pump assembly
PCT/EP2018/056082 WO2018166971A1 (fr) 2017-03-14 2018-03-12 Groupe motopompe
CN201880018580.3A CN110418894B (zh) 2017-03-14 2018-03-12 泵机组

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17160837.5A EP3376038B1 (fr) 2017-03-14 2017-03-14 Groupe motopompe

Publications (2)

Publication Number Publication Date
EP3376038A1 EP3376038A1 (fr) 2018-09-19
EP3376038B1 true EP3376038B1 (fr) 2021-07-28

Family

ID=58347147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17160837.5A Active EP3376038B1 (fr) 2017-03-14 2017-03-14 Groupe motopompe

Country Status (4)

Country Link
US (1) US11512712B2 (fr)
EP (1) EP3376038B1 (fr)
CN (1) CN110418894B (fr)
WO (1) WO2018166971A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111795004A (zh) * 2020-05-11 2020-10-20 河海大学 一种带有双出口式蜗壳的中比转速离心泵
US20230400037A1 (en) * 2022-06-08 2023-12-14 Cooper-Standard Automotive Inc Multiport fluid pump with integrated valve

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7212196U (fr) * Grundfos As
FR1382168A (fr) * 1963-09-21 1964-12-18 Vanne et pompe mélangeuse automatique
DE1958277C2 (de) 1969-11-20 1971-10-07 Schichl, Karl, 8000 München Umwaelzpumpe fuer warmwasser heizungsanlagen mit einem im pumpengehaeuse angeordneten vierwegemischerventil
FR2074692A2 (fr) * 1970-01-19 1971-10-08 Materiel Telephonique Pompe-vanne, en particulier pour le chaffage central
DE4418153A1 (de) * 1994-05-25 1995-11-30 Wilo Gmbh Kreiselpumpe
US5924432A (en) * 1995-10-17 1999-07-20 Whirlpool Corporation Dishwasher having a wash liquid recirculation system
DE19809123B4 (de) * 1998-03-04 2005-12-01 Daimlerchrysler Ag Wasserpumpe für den Kühlkreislauf einer Brennkraftmaschine
US9347369B2 (en) * 2013-03-15 2016-05-24 Gotek Energy, Inc. Systems and methods for controlling compression in an engine, compressor, or pump
EP2818726B1 (fr) * 2013-06-27 2017-08-23 Grundfos Holding A/S Pompe centrifuge avec roue à aubes déplaçable axialement pour l'alimentation de circuits différents
CN105745450B (zh) * 2013-11-16 2017-10-24 博泽沃尔兹堡汽车零部件有限公司 电动冷却剂泵

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3376038A1 (fr) 2018-09-19
US11512712B2 (en) 2022-11-29
US20200072238A1 (en) 2020-03-05
CN110418894B (zh) 2021-11-05
WO2018166971A1 (fr) 2018-09-20
CN110418894A (zh) 2019-11-05

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