US20110164995A1 - Fluid pump - Google Patents

Fluid pump Download PDF

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Publication number
US20110164995A1
US20110164995A1 US12/093,419 US9341906A US2011164995A1 US 20110164995 A1 US20110164995 A1 US 20110164995A1 US 9341906 A US9341906 A US 9341906A US 2011164995 A1 US2011164995 A1 US 2011164995A1
Authority
US
United States
Prior art keywords
housing portion
pump
support ribs
motor
pump housing
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.)
Abandoned
Application number
US12/093,419
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English (en)
Inventor
Albert Genster
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Assigned to PIERBURG GMBH reassignment PIERBURG GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GENSTER, ALBERT
Publication of US20110164995A1 publication Critical patent/US20110164995A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/528—Casings; Connections of working fluid for axial 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/548—Specially 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
    • F04D3/00—Axial-flow pumps

Definitions

  • the invention relates to a fluid pump for internal combustion engines, comprising an electric motor including a rotor arranged in a motor housing, and a stator, the rotor being arranged at least on a drive shaft for common rotation therewith, an impeller fastened to the drive shaft, at least one guide wheel arranged downstream of the impeller in the flow direction of the fluid to be conveyed, and a pump housing surrounding the motor housing, the impeller and the guide wheel, with a pressure socket and an intake socket being arranged opposite the pump housing on the axial ends, support ribs arranged between a radially outer pump housing portion and a first radially inner motor housing portion radially surrounding the electric motor, the radially outer pump housing portion being formed integrally with the motor housing portion and the support ribs.
  • Fluid pumps for internal combustion engines are used particularly as coolant pumps in a cooling circuit. While, in the past, there existed a direct coupling to the rotational speed of the engine and the pumps were driven with the aid of belt and chain drives, more-recent engines are increasingly equipped with rotational-speed-controlled coolant pumps comprising a slit tube so as to render possible a modern heat management. Thus, excessive conveying performance can be prevented, thus allowing e.g. for faster warm-up of the internal combustion engine after cold starting. The delivery volume can be controlled corresponding to the actually required cooling performance.
  • a pump of the above type is known e.g. from MTZ No. 11, Vol. 2005 (pp. 872-877).
  • the electric coolant pump is provided with an EC motor as a drive aggregate and comprises a pump head with axial inlet and tangential outlet.
  • the components and particularly the housing portions used in the pump are very large in view of the power intake of the pump, thus requiring the use of a relatively large drive motor.
  • US 2002/0106290 A1 is an electric fluid pump of a semi-axial design wherein the electric motor, although having the same power intake, can be smaller-sized while reaching higher rotational speeds, thus making it possible to reach the same delivery volumes although using a pump of a smaller size.
  • the motor is a fully encased electric motor with a guide wheel arranged on its outside. However, downstream of the guide wheel when seen in the flow direction, obstacles exist which make it difficult to effect the passage of the electric contacts to the electronics unit.
  • the whole motor is sealed towards the environment by sealing means. It is at least debatable in how far such a sealing means will be sufficiently effective on rotating components.
  • the pump housing is of a two-part design and comprises various stepped portions and through holes for electric contacts. Depending on the desired maximum delivery quantity, it will be necessary to design different electric motors and housings. Due to the relatively short guide vanes, it appears unlikely that a complete elimination of twist can be obtained. Further, the pressure loss caused by the passage of the electric contracts is relatively high so that the gain with respect to the power intake of the electric motor will be partly thwarted by the pressure losses occurring.
  • a semi-axial pump comprising a multi-part housing of which the central portion surrounds the electric motor and serves a one-part motor and pump housing, wherein the pump housing is connected to the motor housing via support ribs. Downstream of these housing portions in flow direction, the electric contacts are guided to the outside via additional tubes.
  • the support ribs are of a linear shape and thus do not serve as a guide wheel for reducing the occurring twist. Instead, high pressure losses will occur because the energy of the tangential component of the flow is nearly completely converted to frictional losses.
  • the support ribs have a shape making them suitable for use as a guide wheel of the fluid pump, and have a width allowing an electric contact element to be guided from an electronics unit to a stator winding via a bore formed in one or a plurality of the support ribs.
  • the support ribs will take over the additional function of converting the tangential flow component into an axial flow component without causing higher pressure losses.
  • the efficiency is increased and the number of component parts is reduced.
  • the electric contacts are passed through the ribs, the flow resistance is reduced and the efficiency of the pump is increased because of the absence of internal component parts in the flow path.
  • the radially outer portion of the pump housing is of a cylindrical shape so that the connection to a suction-side pump housing portion and a pressure-side pump housing portion can be easily established and only slight losses will occur.
  • a suction-side pump housing portion flaring in the flow direction, is formed integrally with a housing portion of a valve arranged upstream thereof.
  • the first portion of the motor housing is arranged to delimit the electric motor on the suction side. Nonetheless, production—e.g. by aluminum pressure die casting—can be performed at low costs, again allowing for a reduced number of component parts, keeping the risk of corrosion low and reducing the danger of faults in assembly.
  • a fluid pump which has a small number of component parts and a low weight, is easily assembled and is less susceptible to flow losses and thus has a higher efficiency as compared to known pumps.
  • the FIGURE shows a sectional lateral view of a fluid pump of the invention.
  • the fluid pump shown in the FIGURE which is useful particularly as a coolant pump in internal combustion engines, is driven by an electronically commutated electric motor 1 comprising a stator 2 and a rotor 4 arranged on a drive shaft 3 .
  • an impeller 5 which is of a semi-axial design and which by its rotation will convey the to-be-conveyed fluid, particularly a coolant, from a suction socket 6 substantially axially through the fluid pump to a pressure socket 7 .
  • the electric motor 1 is accommodated in a motor housing consisting of a first motor housing portion 8 on the suction side and a second motor housing portion 9 on the pressure side. Extending through the suction-side motor housing portion 8 is the drive shaft 3 having the impeller 5 arranged thereon.
  • the suction-side motor housing portion 8 is formed with a bore 10 having arranged therein a first bearing 11 for support of drive shaft 3 . Behind the first bearing 11 when viewed from the suction side, a ceramic axial slide bearing 12 as well as a rubber sleeve 13 and a spacer 14 are arranged. By means of this configuration, a sufficiently vibration-damped support of the impeller side of drive shaft 3 of electric motor 1 is obtained.
  • the spacer serves for extending the distance between the first bearing 11 and a second bearing 15 , allowing a better compensation for an angle error when forming the bore 10 for accommodating the bearings.
  • a rotor plate pack 16 is arranged on the shaft, which pack is formed with axial slits for accommodating magnets 17 which cooperate with a stator coil 18 in a known manner.
  • the rotor 4 is axially and radially delimited by a capsule 19 .
  • the stator coil 18 is wound onto an insulating body 20 and delimits a stator plate pack 21 in a known manner.
  • the stator plate pack 21 is connected in a form-closed manner to a magnetic-yoke 22 .
  • the magnetic-yoke 22 is arranged to bear against an abutment portion 23 formed on an inner face of the first, suction-side motor housing portion 8 .
  • Rotor 4 is separated from stator 2 by a slit tube 24 which on the suction side of the pump is arranged to rest in a corresponding receiving opening 25 of the suction-side motor housing portion 8 and which has also its opposite axial end arranged in a corresponding receiving opening 26 of the pressure-side motor housing portion 9 .
  • the stator 2 with its sensitive coil 18 is arranged in a dry space which is separated by the two motor housing portions 8 and 9 and by the slit tube 24 .
  • a closure member 27 having arranged therein the second bearing 15 for supporting the drive shaft 3 .
  • the closure member 27 is secured by the pressure-side motor housing portion 9 which with an interposed sealing member 28 is arranged in an accommodating opening 29 of the suction-side motor housing portion 8 .
  • the contacting of the stator coil 18 is effected via a bore 30 in a radial direction through the pressure-side motor housing portion 9 .
  • the bore is passed through support ribs 31 which are required for sufficient strength and attachment of a pump housing.
  • the support ribs 31 have a sufficient width and are arranged in a sort of airfoil configuration so as to preclude a narrowing of the cross section. Via this bore 30 , it is now possible to guide an electric contact element, not illustrated, to an electronics unit, also not illustrated, for the controlling of motor 1 .
  • the support ribs 31 are formed to the effect that they also serve as a guide wheel, thus obviating the need for an additional guide wheel directly behind impeller 5 .
  • This makes it possible to produce the suction-side motor housing portion 8 together with the support ribs and a cylindrical, radially outer pump housing portion 32 in a simple manner as one integral unit.
  • the pump housing portion 32 surrounds the radial inner motor housing portion 8 as well as the complete electric motor 1 .
  • the suction-side pump housing portion 33 flaring in the flow direction, comprises the suction socket 6 configured as a cylindrical portion 35 with an adjoining flaring portion 36 .
  • the semi-axial impeller 5 of the fluid pump is arranged in the transition region 37 between the first portion 35 and the second portion 36 .
  • the flaring portion 36 is adjoined by a further, short cylindrical portion 38 of a larger diameter to provide for a smooth transition to the cylindrical pump housing portion 32 .
  • pressure-side pump housing portion 34 comprises corresponding portions narrowing in the flow direction, as well as cylindrical portions; due to the identity of these component parts, they are provided with the same reference numerals.
  • the identical pump housing portions 33 , 34 are formed with grooves 39 engaged by radial ends 40 of return vanes 41 .
  • These return vanes 41 serve as a post-guidance structure 42 which is effective to generate a completely twist-free flow behind the pressure socket 7 .
  • the post-guidance structure 42 is formed on a surface 43 of the pressure-side motor housing portion 9 and becomes necessary because the support ribs 31 serving as a guide wheel are relatively short and a complete reduction of the twist will normally not be accomplished in this region of the fluid pump.
  • the pressure-side motor housing portion 9 can be produced from plastic while the suction-side motor housing portion should, if possible, be produced from aluminum and thus is expensive. If the guide wheel were arranged in this region, this would necessitate a relatively expensive production process whereas the manufacture of the post-guidance structure on the plastic housing portion 9 is simple and inexpensive.
  • the grooves 39 are also effective to define the position of the pressure-side pump housing portion 34 relative to the pressure-side motor housing portion 9 .
  • the pressure-side pump housing portion 34 will press the motor housing portion 9 via the return vanes 40 against the motor housing portion 8 and respectively into the accommodating openings 29 of motor housing portion 8 . Further, thereby, the motor housing portion 9 will be pressed against the closure member 27 and respectively against the split tube 24 so that no additional attachment of the two motor housing portions 8 , 9 will be required.
  • the rotation of impeller 5 comprising a plurality of impeller vanes 44 has the effect that the to-be-conveyed fluid or particularly coolant will be conveyed through the space between the pump housing 32 , 33 , 34 and the motor housing 8 and 9 , and will then be conveyed past the support ribs 31 where—due to their function as a guide wheel—already a part of the twist will be eliminated from the flow, and will further be conveyed via the post-guidance structure 42 wherein the flow will be completely freed of the existing twist, so that the applied energy can be as largely as possible converted into pressure energy and thus into an axial flow without occurrence of frictional losses.
  • This semi-axial pump is distinguished particularly by the possibility to give it a quite small constructional size because, in comparison to known pumps, it is rendered possible, on the basis of the same power input, to obtain the same delivery rate with a reduced motor size and increased rotational speed. This is accomplished particularly by the extremely reduced pressure losses in such a construction; also, however, by the semi-axial design.
  • a pump of the above type is very inexpensive in production because there is involved a reduced number of different constructional parts. This will in turn reduce possible errors in the assembly process. Due to the absence of an additional guide wheel and due to the integration of the electric contacts into the support ribs, the need for additional constructional parts is avoided and pressure losses are reduced. Generally, thus, a higher efficiency is reached.
  • the simple configuration of the pump housing portions 33 , 34 offers the possibility to provide them with a flange arranged on the pressure socket and the suction socket, respectively.
  • This makes it possible, on the one hand, to establish a direct connection to the motor housing or, on the other hand, to switch a plurality of pumps in series so as to increase the conveyed fluid volume.
  • This is made possible especially by the twist-free flow effected by the post-guidance structure 42 , allowing the flow to be passed directly to the impeller 5 of a downstream pump without occurrence of energy losses.
  • the suction-side pump housing portion 33 because of the simple design particularly of the suction-side pump housing portion 33 , the possibility exists to produce the latter integrally with valve housing portions so that the pump housing portion 33 can comprise e.g. a receiving portion to accommodate a bypass or an integrated thermostat valve. Also parts of the housing of a sliding cylindrical valve can be produced integrally with the suction-side pump housing portion 33 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Rotary Pumps (AREA)
US12/093,419 2005-11-10 2006-10-10 Fluid pump Abandoned US20110164995A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005054026.0 2005-11-10
DE102005054026A DE102005054026A1 (de) 2005-11-10 2005-11-10 Fluidpumpe
PCT/EP2006/009761 WO2007054169A1 (de) 2005-11-10 2006-10-10 Fluidpumpe

Publications (1)

Publication Number Publication Date
US20110164995A1 true US20110164995A1 (en) 2011-07-07

Family

ID=37667636

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/093,419 Abandoned US20110164995A1 (en) 2005-11-10 2006-10-10 Fluid pump

Country Status (7)

Country Link
US (1) US20110164995A1 (enExample)
EP (1) EP2002123B1 (enExample)
JP (1) JP2009515084A (enExample)
CN (1) CN101356374B (enExample)
AT (1) ATE524656T1 (enExample)
DE (1) DE102005054026A1 (enExample)
WO (1) WO2007054169A1 (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9861774B2 (en) 2009-08-11 2018-01-09 Resmed Motor Technologies Inc. Single stage, axial symmetric blower and portable ventilator
US20190120249A1 (en) * 2017-10-25 2019-04-25 Flowserve Management Company Modular, multi-stage, integral sealed motor pump with integrally-cooled motors and independently controlled rotor speeds
US11323003B2 (en) * 2017-10-25 2022-05-03 Flowserve Management Company Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow
US12313074B1 (en) 2024-02-09 2025-05-27 Flowserve Pte. Ltd. Efficient system for pumping low-density liquids
US12398659B2 (en) 2024-01-03 2025-08-26 Flowserve Pte. Ltd. Integral motor pump or turbine with sensorless monitoring of axial bearing wear
US12480519B2 (en) 2024-01-09 2025-11-25 Flowserve Pte. Ltd. Mechanism for maintaining integrity of permanent magnets in directly driven sealless pumps and turbines
US12486849B2 (en) 2024-01-08 2025-12-02 Flowserve Pte. Ltd. Mechanism for reducing eddy current losses in sealless pumps and turbines having directly driven impellers

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2984035A1 (fr) * 2011-12-13 2013-06-14 Victor Jean Ballestra Moteur pour pompe ou broyeur sanitaire, du type rotor-stator immerge dans de l'huile dans une carcasse etanche
DE102013009451A1 (de) * 2013-06-06 2014-12-11 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Elektrische Kühlmittelpumpe
DE102014113412B3 (de) * 2014-09-17 2015-09-24 Nidec Gpm Gmbh Strömungsgekühlte Kühlmittelpumpe mit Nassläufer
CN111043039B (zh) * 2019-12-30 2025-02-14 合肥华升泵阀股份有限公司 一种离心式多级泵

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949796A (en) * 1931-08-29 1934-03-06 Himmelwerk Ag Pump or impeller
US2824520A (en) * 1952-11-10 1958-02-25 Henning G Bartels Device for increasing the pressure or the speed of a fluid flowing within a pipe-line
US2855141A (en) * 1955-11-25 1958-10-07 Jacobus C Van Rijn Two-piece cantilever fan and motor
US2968249A (en) * 1958-09-04 1961-01-17 Borg Warner Axial flow apparatus
US3102679A (en) * 1962-01-15 1963-09-03 Loren Cook Company Centrifugal impeller units
US3135212A (en) * 1962-03-29 1964-06-02 Symington Wayne Corp Submersible pump
US3398694A (en) * 1966-08-11 1968-08-27 Marine Constr & Design Co Submersible pump device for net brailing
US3836291A (en) * 1971-11-29 1974-09-17 Bosch Gmbh Robert Pump-and-motor unit, particularly for supplying fuel
US4213745A (en) * 1978-09-11 1980-07-22 Roberts Samuel A Pump for central heating system
US5487644A (en) * 1987-02-13 1996-01-30 Ishigaki Mechanical Industry Co., Ltd Pump having a single or a plurality of helical blades
US5494418A (en) * 1992-04-14 1996-02-27 Ebara Corporation Pump casing made of sheet metal
US5567133A (en) * 1993-07-16 1996-10-22 Ebara Corporation Canned motor and pump employing such canned motor
US6056518A (en) * 1997-06-16 2000-05-02 Engineered Machined Products Fluid pump
US6135098A (en) * 1998-10-06 2000-10-24 Engineered Machine Products, Inc. Flow-through controllable air charger
US6175173B1 (en) * 1998-09-15 2001-01-16 Wilo Gmbh Tube pump
US20020106290A1 (en) * 2001-02-05 2002-08-08 Engineered Machined Products, Inc. Electronic fluid pump
US20030021683A1 (en) * 2001-03-14 2003-01-30 Capone Christopher D. Touch down of blood pump impellers
US20040013547A1 (en) * 2002-07-17 2004-01-22 Engineered Machined Products, Inc. Electronic fluid pump
US20040109762A1 (en) * 2002-12-10 2004-06-10 Honeywell International Inc. Vane radial mounting apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4119177Y1 (enExample) * 1964-03-12 1966-09-07
FR2222885A5 (enExample) * 1973-03-23 1974-10-18 Lucas Industries Ltd
CN1093607C (zh) * 1998-09-25 2002-10-30 振源(厦门)工业有限公司 制造密封式微型潜水泵的方法
DE20201183U1 (de) * 2002-01-25 2002-07-04 Allweiler Ag, 78315 Radolfzell Pumpe mit einen Antriebsmotor durchsetzender Pumpenwelle
JP4122852B2 (ja) * 2002-06-14 2008-07-23 株式会社デンソー 冷却水用ポンプ

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949796A (en) * 1931-08-29 1934-03-06 Himmelwerk Ag Pump or impeller
US2824520A (en) * 1952-11-10 1958-02-25 Henning G Bartels Device for increasing the pressure or the speed of a fluid flowing within a pipe-line
US2855141A (en) * 1955-11-25 1958-10-07 Jacobus C Van Rijn Two-piece cantilever fan and motor
US2968249A (en) * 1958-09-04 1961-01-17 Borg Warner Axial flow apparatus
US3102679A (en) * 1962-01-15 1963-09-03 Loren Cook Company Centrifugal impeller units
US3135212A (en) * 1962-03-29 1964-06-02 Symington Wayne Corp Submersible pump
US3398694A (en) * 1966-08-11 1968-08-27 Marine Constr & Design Co Submersible pump device for net brailing
US3836291A (en) * 1971-11-29 1974-09-17 Bosch Gmbh Robert Pump-and-motor unit, particularly for supplying fuel
US4213745A (en) * 1978-09-11 1980-07-22 Roberts Samuel A Pump for central heating system
US5487644A (en) * 1987-02-13 1996-01-30 Ishigaki Mechanical Industry Co., Ltd Pump having a single or a plurality of helical blades
US5494418A (en) * 1992-04-14 1996-02-27 Ebara Corporation Pump casing made of sheet metal
US5567133A (en) * 1993-07-16 1996-10-22 Ebara Corporation Canned motor and pump employing such canned motor
US6056518A (en) * 1997-06-16 2000-05-02 Engineered Machined Products Fluid pump
US6175173B1 (en) * 1998-09-15 2001-01-16 Wilo Gmbh Tube pump
US6135098A (en) * 1998-10-06 2000-10-24 Engineered Machine Products, Inc. Flow-through controllable air charger
US20020106290A1 (en) * 2001-02-05 2002-08-08 Engineered Machined Products, Inc. Electronic fluid pump
US20030021683A1 (en) * 2001-03-14 2003-01-30 Capone Christopher D. Touch down of blood pump impellers
US20040013547A1 (en) * 2002-07-17 2004-01-22 Engineered Machined Products, Inc. Electronic fluid pump
US20040109762A1 (en) * 2002-12-10 2004-06-10 Honeywell International Inc. Vane radial mounting apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9861774B2 (en) 2009-08-11 2018-01-09 Resmed Motor Technologies Inc. Single stage, axial symmetric blower and portable ventilator
US10874810B2 (en) 2009-08-11 2020-12-29 Resmed Motor Technologies Inc. Single stage, axial symmetric blower and portable ventilator
US11998690B2 (en) 2009-08-11 2024-06-04 Resmed Motor Technologies Inc. Single stage, axial symmetric blower and portable ventilator
US20190120249A1 (en) * 2017-10-25 2019-04-25 Flowserve Management Company Modular, multi-stage, integral sealed motor pump with integrally-cooled motors and independently controlled rotor speeds
CN111436205A (zh) * 2017-10-25 2020-07-21 福斯管理公司 具有整体冷却的电机及独立控制的转子速度的模块化多级整体密封电动泵
US11323003B2 (en) * 2017-10-25 2022-05-03 Flowserve Management Company Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow
US12398659B2 (en) 2024-01-03 2025-08-26 Flowserve Pte. Ltd. Integral motor pump or turbine with sensorless monitoring of axial bearing wear
US12486849B2 (en) 2024-01-08 2025-12-02 Flowserve Pte. Ltd. Mechanism for reducing eddy current losses in sealless pumps and turbines having directly driven impellers
US12480519B2 (en) 2024-01-09 2025-11-25 Flowserve Pte. Ltd. Mechanism for maintaining integrity of permanent magnets in directly driven sealless pumps and turbines
US12313074B1 (en) 2024-02-09 2025-05-27 Flowserve Pte. Ltd. Efficient system for pumping low-density liquids

Also Published As

Publication number Publication date
CN101356374A (zh) 2009-01-28
EP2002123B1 (de) 2011-09-14
WO2007054169A1 (de) 2007-05-18
EP2002123A1 (de) 2008-12-17
DE102005054026A1 (de) 2007-05-16
ATE524656T1 (de) 2011-09-15
JP2009515084A (ja) 2009-04-09
CN101356374B (zh) 2011-06-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: PIERBURG GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GENSTER, ALBERT;REEL/FRAME:021544/0551

Effective date: 20080627

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION