EP2002123A1 - Pompe a fluide - Google Patents

Pompe a fluide

Info

Publication number
EP2002123A1
EP2002123A1 EP06806138A EP06806138A EP2002123A1 EP 2002123 A1 EP2002123 A1 EP 2002123A1 EP 06806138 A EP06806138 A EP 06806138A EP 06806138 A EP06806138 A EP 06806138A EP 2002123 A1 EP2002123 A1 EP 2002123A1
Authority
EP
European Patent Office
Prior art keywords
housing part
pump
stator
motor housing
fluid pump
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.)
Granted
Application number
EP06806138A
Other languages
German (de)
English (en)
Other versions
EP2002123B1 (fr
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
Publication of EP2002123A1 publication Critical patent/EP2002123A1/fr
Application granted granted Critical
Publication of EP2002123B1 publication Critical patent/EP2002123B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 with an electric motor having a rotor arranged in a motor housing and a stator, wherein the rotor is at least rotationally fixed on a drive shaft, an impeller which is mounted on the drive shaft, at least one stator, which is arranged in the flow direction of the fluid to be conveyed behind the impeller, and a pump housing, which surrounds the motor housing, the impeller and the stator and on which at the axial ends opposite a discharge nozzle and a suction nozzle are formed.
  • Fluid pumps for internal combustion engines are used in particular as coolant pumps in the cooling circuit. Whereas in the past there was a direct coupling to the engine speed and the pumps were driven by belt drives or chain drives, in newer engines variable speed electric coolant pumps with split tubes are increasingly used to realize a modern heat management. An abundance in the flow rate can thus be prevented, so that, for example, a faster heating of the internal combustion engine after the cold start is possible.
  • the flow rate can be regulated according to the actually required cooling capacity.
  • Such a pump is known for example from MTZ no.11 Jg.2005 (S. 872-877).
  • This electric coolant pump comprises an EC motor as a drive unit and has a pump head with axial inlet and tangential outlet.
  • the components used here and in particular housing parts are relatively large for the power consumption of the pump, since a relatively large drive motor must be used.
  • an electric fluid pump is disclosed in Halbaxialbauweise, with the same power consumption of the electric motor, this can be made smaller to achieve higher speeds, so that with smaller size equal flow rates can be achieved.
  • It has a completely encapsulated electric motor, on whose outer side a stator is formed. In the flow direction behind the stator, however, obstacles to carry out the electrical contact with the electronics unit arise.
  • the impeller side the entire motor is sealed by seals against the environment. To what extent such a seal on the rotating parts is sufficient at least questionable.
  • the pump housing is made in two parts and has different gradations and through holes for the electrical contact. Depending on the desired maximum flow rate different electric motors and housings have to be designed. Complete twist freedom is probably not achieved due to the relatively short vanes. Also, the pressure loss through the feedthroughs of the electrical contact is relatively high, so that the gain in terms of power consumption of the electric motor is partially counteracted by the pressure losses occurring.
  • This object is achieved in that support ribs between a radially outer pump housing part and a first radially inner motor housing part are arranged, which surrounds the electric motor radially, wherein the radially outer pump housing part with the first motor housing part and the support ribs is integrally formed.
  • the radially outer pump housing part is cylindrical, whereby the connection to a suction-side and a pressure-side pump housing part is easy to produce and low losses occur.
  • the support ribs are preferably shaped in such a way that they serve as a stator of the fluid pump. As a result, the support ribs assume the additional function of converting the tangential flow component into an axial flow component without higher pressure losses. The efficiency is increased and components saved.
  • the support ribs have such a width that an electrical contact element of an electronic unit to the stator winding through a hole in one or more of the support ribs is feasible is particularly advantageous. This reduces the flow resistance and increases the efficiency of the pump, since internal internals are omitted in the flow.
  • a suction-side pump housing part which widens in the flow direction is formed integrally with a housing part of an upstream valve. It can thus be achieved a modular design with upstream bypass or thermostatic valves, which in turn reduces parts and costs are saved.
  • the first motor housing part limits the electric motor on the suction side.
  • the production remains cost-effective, for example, in aluminum die casting, again the number of parts is low, the sensitivity to corrosion is low and assembly errors are avoided.
  • the figure shows a side view of a fluid pump according to the invention in a sectional representation.
  • the fluid pump shown in the figure which is particularly suitable as a coolant pump in internal combustion engines, is driven by an electronically commutated electric motor 1, which consists of a stator 2 and a rotor 4 arranged on a drive shaft 3.
  • an impeller 5 is arranged, which is designed in a semi-axial design and by the rotation of the fluid to be delivered, in particular a coolant from a suction nozzle 6 is conveyed substantially axially through the fluid pump to a discharge nozzle 7.
  • the electric motor 1 is arranged in a motor housing which consists of a first suction-side motor housing part 8 and a second pressure-side motor housing part 9.
  • the suction-side motor housing part 8 Through the suction-side motor housing part 8, the drive shaft 3 is guided, on which the impeller 5 is arranged.
  • the suction-side motor housing part 8 has a bore 10 in which a first bearing 11 for supporting the drive shaft 3 is arranged.
  • the spacer serves to extend the distance of the first bearing 11 to a second bearing 15, whereby an angular error in the manufacture of the bore 10 for receiving the bearing can be better compensated.
  • a rotor laminated core 16 is arranged on the shaft, which has slits extending in the axial direction for receiving magnets 17, which correspond in a known manner to a stator winding 18.
  • the rotor 4 is bounded axially and radially by a capsule 19.
  • the stator winding 18 is wound on an insulating body 20 and axially limited in a known manner a stator lamination 21.
  • This Statorblechmulti 21 is to close of the magnetic circuit positively connected to a return plate 22.
  • This return plate 22 abuts against a stop 23, which is formed on an inner surface of the first suction-side motor housing part 8.
  • the rotor 4 is separated from the stator 2 by a split tube 24, which rests on the suction side of the pump in a corresponding receiving opening 25 of the suction-side motor housing part 8 and the opposite axial end is in turn arranged in a corresponding receiving opening 26 of the pressure-side motor housing part 9.
  • the stator 2 with its sensitive winding 18 thus lies in a dry space separated by the two motor housing parts 8 and 9 and the can 24.
  • a closure member 27 is arranged, in which the second bearing 15 is arranged for mounting the drive shaft 3. Axially, this closure member 27 is secured by the pressure-side motor housing part 9, which is arranged with the interposition of a seal 28 in a receiving opening 29 of the suction-side motor housing part 8.
  • the support ribs 31 are shaped such that they also serve as a stator, so that no additional stator immediately behind the impeller 5 is necessary. This allows a simple one-piece production of the suction-side motor housing 8 with the support ribs and a cylindrical ra- dial outer pump housing part 32. This pump housing part 32 surrounds the radially inner motor housing part 8 and the entire electric motor. 1
  • the suction side in the flow direction expanding pump housing part 33 comprises the suction nozzle 6 which is designed as a cylindrical portion 35 and an adjoining widening 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 expanding section 36 is followed by another short cylindrical section 38 of larger diameter, in order to achieve a clean transition to the cylindrical pump housing part 32.
  • grooves 39 are formed in the identical pump housing parts 33, 34, into which radial ends 40 of return vanes 41 engage.
  • These return blades 41 serve as a Nachleitapparat 42 by means of which behind the discharge nozzle 7 a completely twist-free flow is achieved.
  • This Nachleitapparat 42 is formed on a surface 43 of the pressure-side motor housing part 9 and is therefore necessary that the serving as a stator support ribs 31 are made relatively short and in this area of the fluid pump complete swirl reduction is not achieved in the rule.
  • the pressure-side motor housing part 9 can be produced in plastic, while the suction-side motor housing part is made as far as possible in aluminum and is therefore more expensive.
  • the fluid to be delivered in particular the coolant
  • the impeller 5 which consists of a plurality of impeller blades 44
  • a part of the fluid flows behind the impeller 5 through holes 45 which are formed in the suction-side motor housing part 8. Another part of the fluid also flows behind the impeller 5 to the drive shaft 3 and here between the first bearing 11 and the drive shaft 3, so that the existing sliding bearing is sufficiently lubricated.
  • coolant is in the rotor chamber, which in turn is continued between the drive shaft 3 and the second bearing 15 and by non-visible holes in the closure member 27 in a space 46 behind it.
  • This space 46 is connected via a further bore 47, which extends axially through the pressure-side motor housing part 9, with the space behind it. This results in both a lubrication of the bearings 11, 15 as well as a possibility for cooling and removal of possibly existing amounts of air in the rotor chamber.
  • This semi-axial pump is characterized in particular by the fact that it is very small to build, since the same power consumption an equal capacity with a smaller motor size and increased speed compared to known pumps can be achieved. This is achieved in particular by the extremely reduced pressure losses in such a design, but also by the semi-axial design.
  • the suction-side pump housing part 33 it is also conceivable, by the simplicity, in particular of the suction-side pump housing part 33, to carry this integrally with valve housing parts, so that the pump housing part 33 has, for example, a receptacle for a bypass or an integrated thermostatic valve. Also, parts of the housing of a sliding ring valve could be made in one piece with the suction-side pump housing part 33. It should be noted that the illustrated embodiment is merely a possible embodiment of the invention, the construction of which is subject to change without departing from the scope of the claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

L'invention concerne une pompe à fluide électrique présentant une structure semi-axiale, comprenant des nervures de support (31) qui sont disposées entre une partie de carter de pompe (32) située radialement à l'extérieur et une première partie de bâti de moteur (8) qui est disposée radialement à l'intérieur et qui entoure radialement le moteur électrique (1). Selon l'invention, la partie de carter de pompe (32) située radialement à l'extérieur (32) est configurée de manière à ne faire qu'un avec la première partie de bâti de moteur (8) et les nervures de support (31). Ainsi, il est possible de produire des cartes de pompe présentant des parois plus minces que les carters de pompe selon l'art antérieur, les nervures de support conférant une solidité suffisante. Ceci permet de réduire le nombre de pièces ainsi que le poids.
EP06806138A 2005-11-10 2006-10-10 Pompe a fluide Not-in-force EP2002123B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005054026A DE102005054026A1 (de) 2005-11-10 2005-11-10 Fluidpumpe
PCT/EP2006/009761 WO2007054169A1 (fr) 2005-11-10 2006-10-10 Pompe a fluide

Publications (2)

Publication Number Publication Date
EP2002123A1 true EP2002123A1 (fr) 2008-12-17
EP2002123B1 EP2002123B1 (fr) 2011-09-14

Family

ID=37667636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06806138A Not-in-force EP2002123B1 (fr) 2005-11-10 2006-10-10 Pompe a fluide

Country Status (7)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105749394B (zh) * 2009-08-11 2018-12-04 瑞思迈发动机及马达技术股份有限公司 单级轴对称鼓风机和便携式通风机
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
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

Family Cites Families (24)

* 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
JPS4119177Y1 (fr) * 1964-03-12 1966-09-07
US3398694A (en) * 1966-08-11 1968-08-27 Marine Constr & Design Co Submersible pump device for net brailing
DE2159025C2 (de) * 1971-11-29 1982-12-30 Robert Bosch Gmbh, 7000 Stuttgart Kraftstofförderaggregat, bestehend aus einer Seitenkanalpumpe und einem Elektromotor
FR2222885A5 (fr) * 1973-03-23 1974-10-18 Lucas Industries Ltd
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
DE4312154A1 (de) * 1992-04-14 1993-10-21 Ebara Corp Aus Metallblech hergestelltes Pumpengehäuse
JP2958218B2 (ja) * 1993-07-16 1999-10-06 株式会社荏原製作所 ポンプ
US6056518A (en) * 1997-06-16 2000-05-02 Engineered Machined Products Fluid pump
EP0987441B1 (fr) * 1998-09-15 2003-12-10 Wilo Ag Pompe à tube
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
US6135098A (en) * 1998-10-06 2000-10-24 Engineered Machine Products, Inc. Flow-through controllable air charger
US6659737B2 (en) * 2001-02-05 2003-12-09 Engineered Machined Products, Inc. Electronic fluid pump with an encapsulated stator assembly
US6761532B2 (en) * 2001-03-14 2004-07-13 Vascor, Inc. Touch down of blood pump impellers
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
US6702555B2 (en) * 2002-07-17 2004-03-09 Engineered Machined Products, Inc. Fluid pump having an isolated stator assembly
US6843638B2 (en) * 2002-12-10 2005-01-18 Honeywell International Inc. Vane radial mounting apparatus

Non-Patent Citations (1)

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Title
See references of WO2007054169A1 *

Also Published As

Publication number Publication date
DE102005054026A1 (de) 2007-05-16
WO2007054169A1 (fr) 2007-05-18
JP2009515084A (ja) 2009-04-09
CN101356374A (zh) 2009-01-28
ATE524656T1 (de) 2011-09-15
EP2002123B1 (fr) 2011-09-14
US20110164995A1 (en) 2011-07-07
CN101356374B (zh) 2011-06-29

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